September 1 - 30, 2026: Issue 658

 

Spring's Winged Thing: Bogong Moths  Are Back! On NSW South Coast + Butterflies this Season

Have you noticed there have been a lot of moths around the past few weeks? Mostly tan and white ones?

Maybe you have spotted one of the early Spring butterflies or those that are here all year round - the Common Crow Butterfly Euploea core  butterfly, or 'flutter-by' as we call them here.

People on the South Coast of New South Wales have seen Bogong Moths swarming on Friday September 25 2026 - something that has not happened for a number of years, and a good sign pygmy possums, for whom these moths are a primary food source, will be well-fed this Spring.

Hundreds of people have seen them coming from in Callala Bay, which is on the northern shore of Jervis Bay about 20 minutes drive from Nowra and 10 minutes from Culburra Beach.

People have been sharing photos of masses of them and one person said their grandchildren were having a great time dancing among them!

Late Saturday a southerly blew them into Pittwater - masses of them!

Photo: Katie Gardener, some of the Bogong Moths on her home's walls. Friday September 25 2026

Bogong moths are a keystone species for the health of alpine ecosystems in Australia. They are a crucial food source for critically endangered mountain pygmy-possums and many other high elevation species. Traditional Owners have long harvested migrating bogong moths as a plentiful and nutritious food source. Different groups gathered on the high plains to conduct important business and cross‑cultural ceremonies during the migration period.

Bogong moths fly annually in Spring from the warm inland plains of eastern Australia to aestivate, a form of dormancy during warmer periods, in the cooler alpine areas along the Great Dividing Range. The moths then return to these inland areas in autumn to breed when food resources are suitable for their larvae.

Mass migrations usually occur at night. Moths use the earth’s magnetic fields and light from the night sky to orient towards alpine areas of the Australian Capital Territory, the Victorian Alps and the Snowy Mountains in New South Wales.

Each year, every moth makes this huge journey for the first time. This behaviour shows an inbuilt ability to navigate long distances.

Bogong moth numbers suffered a catastrophic 99.5% decline between 2018 and 2021. In 2021, the Bogong moth was added as an endangered species to the International Union for Conservation of Nature (IUCN) red list of threatened species. 

The cause of the sudden population crash is likely due to:

  • severe droughts
  • fires impacting larval sites
  • the use of pesticide
  • predation by introduced species
  • habitat loss
  • light pollution diverting migrating moths from their paths.

The loss of any species is upsetting, but the rapid decline of Bogong Moths impacts many other species. Bogong moths are a foundation species in the alpine food chain and support much of the alpine ecosystem.

They are also nectar eaters and act as pollinators, and their huge reduction in numbers could have a significant effect, not only on the small mammals relying on them as a food source, but also on plants along their migration route and in the alps.

You can help Bogong moths and all the species that rely on them by:

  • not using insecticides
  • turning off unnecessary lights at night
  • reducing your carbon emissions
  • planting native alpine flowers such as Correa, eucalypts, tea tree and grevillea that attract this species.

Atop that, should any make their way to Sydney, as they once did in massive amounts, there is a project called 'Moth Tracker' where scientists are collecting sightings to gauge how this little flutter-by is recovering from the problems that have beset it for almost a decade now. See Moth Tracker: www.zoo.org.au/moth-tracker

There is also another project, 'Bogong Watch'. See: invertebratesaustralia.org/bogong-watch

Bogong Watch is an initiative of Invertebrates Australia. It is a program driven by a growing network of observers across Australia gathering and reporting sightings of Bogong moths to help map its epic migration.

Both of these ask you to upload a photo and tell them where it was taken so they can track the annual migration of the Bogongs and see what can be done to support more of them.

As we're now in the Spring School Holiday's break, and set for some lovely weather that may encourage more insects to take to the skies and fly across your home range, a few notes on what you may see in your garden that may help you identify which is which.

We start with the Bogong - fingers crossed we see some here in Pittwater too!

Bogong Moth Time Approaches – Spring in Australia – Eastern Coasts

Although some squirm when these beautiful insects and their season approaches, they are part of our natural balance and a sure sign that Spring is moving towards Summer.

The Bogong moth (Agrotis infusa) is a temperate species of night-flying moth notable for appearing in large numbers around major public buildings in Canberra, the capital city of Australia, during Spring (late September to November) as it migrates to the High Plains. The moth's name 'Bogong' is the same as the mountain ranges on the High Plains i.e. the Bogongs, and may mean 'Big Fella' hence the name for the mountains, or it may have been the name for the Moth which has been accorded to the mountains as their locale.

Indigenous Australians living in south eastern Australia were known to have feasted on the moths, benefiting from their rich fat reserves, particularly during the summer when the moths were plentiful. The moths were either killed or stupefied by the heat and smoke of torches, and then their bodies collected. Many Aboriginal band groups from the lowlands travelled to exploit this tasty, high protein and high fat resource, and so at any time during the summer, the population of human foragers could be upwards of 400 individuals. Moth collection activities were accompanied by appropriate ceremonies and rites of intensification, and most nearby groups held title to their own pitch for harvesting. Once collected, the moths were generally roasted and eaten whole. This cultural use is no longer practised. The term "Urri Arra" refers to the Bogong moth feasts that these Aboriginal people held.

A town, Bogong, in the Australian state of Victoria has been named after the moth. The Bogong moth Agrotis infusa is common throughout southern Australia. These brown to blackish moths have a wingspan of approximately 45 millimetres. Adults make lengthy migrations to spend summer months in large congregations in caves and crevices of rocks in the Australian Alps, notably in the region of the Bogong High Plains in Victoria. They are attracted to lights, like those seen at night in the Sydney and Canberra areas. 

They were notable in broadcasts of the Sydney 2000 Olympics Opening Ceremony on 15 September. Large numbers may enter houses or other buildings to rest during the day. In winter, adults disperse to pastures across inland New South Wales and Queensland to lay their eggs.

This subfamily are characterised by their stoutly built bodies covered with long dense scales. The larvae, collectively known as cutworms, are also stoutly built. They feed on a wide variety of plants (see list below). The name cutworm comes from the larvae's habit of cutting off plant parts during the night which they drag back to their burrows in the soil as food. The Bogong moth is univoltine (i.e. it has one generation per year). The Lepidopteran life cycle consists of four stages; ova (eggs), several larval instars (caterpillars), pupa (cocoon), and imagines (adults).

Photo: Donald Hobern from Canberra, Australia

VISITATION OF MOTHS - Little Damage Done

Entomologists of the Department of Agriculture are investigating a plague of moths which has afflicted many parts of the State in recent weeks. The moths have appeared in amazing numbers in the Mallee, the Wimmera, the Mornington Peninsula, and even in some of the outer suburbs. The moths in the Wimmera, which have caused some concern, are cram-bid, or grass moths, in the main, but so far very little dam-age has been caused. An entomologist said yesterday that they were confining their attentions almost entirely to "rubbish," though there had been one or two instances of their eating wheat. Some of the species have not yet been identified, and they are being bred in the department's laboratory for purposes of identification. It is at present considered unlikely that the plague will develop to serious proportions. It is expected that rain will drown the moths in the ground. A report from Queenscliff states that at the week-end moths arrived in huge clouds at sunset, and many died, having to be swept up from floors of houses and from paths.

Seagulls' Feast

What must have been the first "hatch" of the Bogong moth emerging from the tea-tree at Beaumar is is related by Mr.C. W. Wilson, proprietor-manager of Scott's Hotel, Melbourne. On Sunday evening at dusk Mr. Wilson saw a large flock of silver gulls above the shoreline wheeling, "backpedalling," and somersaulting in mid-air. Their antics were caused by their enthusiasm for a large swarm of Bogong moths, drifting out to sea in the still air. Some of the gulls were so gorged with the moths that they could scarcely fly, others seemed insatiable.

The Bogong moth (Euxoa infusa) has in countless numbers stopped trains, ob-scured lighthouse lights, and wrecked in-numerable gas mantles. When the moths emerge after heavy rain in early winter they swarm in millions. The aborigines used to make special trips to the Australian Alps to gorge on this delicacy. They occur in masses in rocky crevices and caves; hence the names Bogong High Plains and Mountains in Gippsland. VISITATION OF MOTHS. (1939, May 17). The Argus (Melbourne, Vic. : 1848 - 1957), p. 3. Retrieved from http://nla.gov.au/nla.news-article12129340

THE BIG BOGONG. A Neighbour of Kosciusko. 

(BY J. J. B.)

The southern tablelands are rich in items of physiographical interest, for among other distinctions they embrace the highest mountain in Australia-Kosciusko. Not with-standing this prestige, Kosciusko is closely pressed when it comes to comparing altitudes above sea level; in far, the main range on which Kosciusko rests is studded with peaks culminating in rocky knolls, which, though not very conspicuous, run very close to Kosciusko on the altitude scale. There is no mountain, however, in the territory, which compares with the "Big Bogong"-as it Is familiarly known, or Jagungal as it is called in official circles-in downright majesty and impressiveness. Strangely enough, It is situated on a spur at a distance of four miles westerly from the main range, and this fact adds to its uniqueness. Its altitude Is 6755 feet, or 575 feet less than that of Kosciusko, but whereas the latter is located in the midst of a confusion of high altitudes, the Big Bogong stands out in singular glory. As the crow flies, the Big Bogong is distant twenty-two miles, and bears almost due north from the more famous summit.

In appearance the subject of this article gives the sightseer the Impression of restful grandeur. True, the Immediate summit and part of the western face is rocky, but the general effect Is not one of ruggedness. It stands as a huge monument facing the west, bare of timber on the upper slopes, grassed to within a few feet of the trigonometrical station, and generally conveying a suggestion of guardianship over the flocks and herds which frequent the grassy plateaux and valleys on all sides during the summer months.

Mount Bogong, at 1,986 metres (6,520 ft) the highest mountain in Victoria. This is the western flank towering above the town of Mount Beauty, taken looking east from Sullivans Lookout on the Tawonga Gap Rd. Victoria, Australia. Photo by John O’Neill, 9 May 2013 

ORIGIN OF THE NAME.

Various theories are given as to the origin of the name Bogong, the most popular being attributed to the aboriginal name for a huge moth, which is to be found around the summit at certain times of the year. This may have some truth In it, but the fact remains that there are numerous mountains in southern New South Wales and that part of Victoria adjacent, bearing the name of Bogong in some combination or other. There is the Rocky Bogong, Grey Mare's Bogong, and Dicky Cooper Bogong, all within ten miles, and there are the "Bogongs"-a nest of peaks situated easterly from Tumut.

The first name "Big" does not, it is thought, refer to big moths, but to the fact that the mountain is unusual, and therefore my the story is that Bogong in the dialect of southern aborigines euphoniously indicated a conspicuous mountain.

The Big Bogong is easily scaled on horse-back to within a few feet of the summit, the culminating point being an outcrop of andesite piercing the granite surroundings. Here a trigonometrical station has been erected, consisting of the usual cairn of stone supporting a post of squared timber. The galvanised iron vanes have been blown away by the force of wind and driven snow. A flash of lightning, some three or four years ago, struck the guy wire supporting the upright, and blast-ed out some 30 or 40 tons of the hard rock, scattering fragments as if by heavy explosive some hundreds of yards.

A LANDSCAPE OF PEAKS.

From the summit one may gaze for scores of miles in any direction until the distant landscape melts into space. To the north, Tabletop Mountain, a basaltic peneplain, Im-mediately attracts attention; to the north-west, the Round Mountain and Black Jack are prominent; to the south-west, Rocky and Grey Mare's Bogongs are conspicuous; and southerly, Dicky Cooper's Bogong appears like a pimple of rock behind which progressively one's eyes can discern Adams and Twynams' peaks and other points which hide or confuse the real Kosciusko; to the south-east the Kerries, which actually comprise a huge swell in the range, are easily seen. Beyond all these in any direction the landscape extends to beyond the power of the eye to discern.

In the Immediate foreground, 1000 feet lower than the summit, are extensive areas of grass land, with belts of timber and plain alternating. The Geehi River rises on the south-east, and the Tumut River immediately under the mountain an the west. Further westerly the Tooma River-named the Toolong locally-rises, and after meandering through plain and timber alternatively, eventually joins the Upper Murray. There are approximately 125,000 acres of good summer grazing country in the vicinity held by graziers under leasehold, and used extensively for re-lief pastures In times of drought.

Some day this territory will become the sanitorium for the Riverina, where relief from summer heat can be gained. Then the Big Bogong will surely be appreciated for its most remarkable appearance; for while there may be many mountains In Australia more rugged and forbidding, there is no other mountain like the Big Bogong. Patriarchal, he faces the sunburnt western plains, kindly visaged, inviting, beautiful in rounded simplicity. THE BIG BOGONG. (1930, June 14). The Sydney Morning Herald (NSW : 1842 - 1954), p. 19. Retrieved from http://nla.gov.au/nla.news-article16679141

Common Crow Butterfly Euploea Core

You may be seeing a few of these butterflies around our area at the moment, the Common Crow Butterfly Euploea core.

It belongs to the crows and tigers subfamily Danainae (tribe Danaini). E. core is a glossy-black, medium-sized 85–95 mm (3.3–3.7 in) butterfly with rows of white spots on the margins of its wings. E. core is a slow, steady flier. Due to its unpalatability it is usually observed gliding through the air with a minimum of effort. As caterpillars, this species sequesters toxins from its food plant which are passed on from larva to pupa to the adult. While feeding, it is a very bold butterfly, taking a long time at each bunch of flowers. It can also be found mud-puddling with others of its species and often in mixed groups. The males of this species visit plants like Crotalaria and Heliotropium to replenish pheromone stocks which are used to attract a female during courtship.

It is found in southern Pakistan, Sri Lanka, India, Bangladesh, Myanmar, Russia, and Australia. In its range E. core is found at all elevations, right from sea level up into the mountains to 2,400 metres (8,000 ft). It can be observed in all layers of vegetation and in all types of regions from arid land to forested areas. It can as commonly be seen gliding over the treetops as flitting about a foot off the ground searching for nectar flowers. In thick forests it is often seen moving along open tracks or following the course of a river.


Photo taken in Careel Bay, March 2023. Pic; AJG

The butterfly, being protected by its inedibility, has a leisurely flight. It is often seen flying about shrubs and bushes in search of its host plants. It visits a large variety of flowering plant species. When gliding E. core holds its wings at an angle just greater than the horizontal plane, maintaining its flight with a few measured wingbeats.

E. core is a nectar lover and visits flowers unhurriedly. It seems to prefer bunches to individual flowers. When feeding the butterfly is unhurried and is not easily disturbed. It can be approached closely at this time.  On hot days large numbers of these butterflies can be seen mud-puddling on wet sand. E. core is an avid mud-puddler often congregating in huge swarms along with other Euploea species as well as other danaids.

Eggs are laid on the underside of young leaves of the host plants. The egg is shiny white, tall and pointed, with ribbed sides. Just before hatching the eggs turn greyish with a black top. Throughout its life the caterpillar stays on the underside of the leaves. The caterpillar is uniformly cylindrical, vividly coloured and smooth. It has alternate white and dark brown or black transverse bands. Just above the legs and prolegs, along the entire body is a wide orangish-red band interspersed with black spiracles. 

The adult butterfly has a life span of 11 - 13 weeks. The adults feed upon nectar from various flowering plants, including eucalypts.

Phoracantha Semipunctata: The Australian Eucalyptus Longhorn

This week an insect with a pretty shell came inside the house. After taking a photo and looking it up we found out it is a  Eucalyptus longhorn, and a species of beetle in the family Cerambycidae. 

Longhorn beetles (Cerambycidae), also known as long-horned or longicorns (whose larvae are often referred to as roundheaded borers), are a large family of beetles, with over 35,000 species described. Most species are characterized by extremely long antennae, which are often as long as or longer than the beetle's body.

Native to Australia, the Australian Eucalyptus Longhorn has now spread to many parts of the world, including practically all countries where tree species of Eucalyptus have been introduced. It has been classified as an invasive pest species of Eucalyptus outside Australia.

Within Australia, Phoracantha semipunctata primarily seeks decaying trees and branches.

Phoracantha semipunctata are typically dark brown and beige in colour and are approximately similar in size measuring at around 2.3cm long. They are most active during the early dusk hours, and are found in populations within host trees, which are predominantly male-oriented. These host trees are determined according to the suitability of adult mating and oviposition, and the viability of larvae development.


There are 4 key processes that occur within its lifecycle — Egg, larval, pupation and adult.

Female Phoracantha semipunctata lay approximately a batch of 40 eggs, where eggs are laid below detached bark, present within stressed host trees.

After the eggs hatch, larvae emerge and begin acquiring nutrients from the cambium and phloem segments, excavating through the external layer of bark to consume in the inner bark and exterior xylem tissues.

Pupation will occur after larvae development. Larvae Phoracantha semipunctata, will establish pupal chambers, within the sapwood or in some cases the heartwood, where they will develop into adult beetles. Pupation may take up to 10 days.

After pupation, adult Phoracantha semipunctata will then begin digging themselves out the pupal chamber in which they will then create a 8-10mm opening in the external bark layer. The total life cycle of P. semipunctata varies; however, in host trees with high larvae competition, their total lifecycle may be significantly depleted and only span up to two months.

Phoracantha semipunctata eggs and larvae are subject to various natural predators which may diminish their viability during the development process. Braconid parasites, including Syngaster lepidus, and Bracon capitator have been recorded to have negative effects. These female wasps infuse a certain venom within the larvae, stopping any further development and feeding that can be done. 

There are also other species of beetle which lower larvae survivorship, including Trogodendron fasciculatum and Aeschyntelus vittatus. 

Trogodendron fasciculatum, the yellow-horned clerid, is a small beetle of the family Cleridae (checkered beetles). It too is native to Australia, and feeds on other insects.


Clerid beetle of the species Trogodendron fasciculatum (Schreibers) or yellowhorned clerid. Taken in January 2007 on a eucalyptus tree in Swifts Creek, Victoria, Australia. Photo: Fir0002/Flagstaffotos

Ants are also a problem for them as they simply carry the beetle eggs within Eucalyptus trees off to their own nest. 

The resilience of Eucalyptus species to these insects is best achieved by looking after these. Making sure there is sufficient water during long durations of dry condition helps as longhorns need dry trees that are not too well to thrive and 'bore' into them. 

Certainly not a 'boring' place to be though - seeing what comes indoors or what lives in the garden.

Sphinx Moths

This moth is a Acosmeryx cinnamomea, a species of in the family sphinx moths. Sphingidae (Sphinx Moths) is a family of Lepidoptera (Moths And Butterflies). They eat the leaves of Cayratia clematidea (wild grape), Cissus antarctica (Kangaroo vine), Cissus oblonga, Vitis vinifera (wine grape/edible grape), Vitis vinifera rupestris (ornamental grape). They are Nocturnal - Active at night. Their colour ranges from brown to grey. Their size at rest - tip of thorax to tip of either forewing: 49mm. 


As you can see, this one has a bald spot. Moths and butterflies constantly accumulate damage on their wings and bodies over time, and they're especially prone to loosing the delicate scales that coat their exoskeleton (which is usually visible as a 'bald spot' on the top part of a moth's thorax when it's been bumping around a light for a few hours). You can even get a sense of a moth's age by seeing how worn and tattered its wings are; newly emerged individuals are usually pristine, while older ones have frayed wings and patches of missing scales.


The species is found in North-Western WA, Northern NT, Far North Queensland and south along the coast through QLD, NSW to northern tip of VIC. The caterpillar grows to a length of about 8cms. The pupa has a length of about 4.5 cms. 

Tiger Moth

Finally, how about one more of the moths you are likely to see at present? This one flew in and hovered around the computer and then dived down the back of the desk, where there are heaps of cobwebs, on Friday morning at dawn - obviously coming indoors for the day - and reminding me to clean behind my desk! - whoops....

This is a Tiger Moth - an actual moth and not a aeroplane form some years past.


Unlike many other moths, Tiger Moths has bright orange bars and spots on its wings. They have striped abdomens which has given them their name. Most Tiger Moths fly at night but some are day-fliers. They do not fly very fast.

Most Caterpillars of the Arctiidae are covered in dense dark hairs, which gives them the name "Woolly Bears". The hairs can cause irritation in sensitive skin. The caterpillars are small to medium size. The caterpillars usually active during the daytime. If disturbed, they will roll into a tight spiral. 

Tiger Moths live on the coastal areas of eastern Australia. You will find Tiger Moths on plants usually around flowers, around water such as puddles and in the air.

After dark Tiger Moths emit ultrasonic clicks which can be picked up by insectivorous bats. These clicks warn the bats that the moth is unpleasant to eat, and also jams the bats’ sonar system.

The Tiger Moth is a food source for small birds. Luckily for the Tiger Moth, most predators know its marked patches of orange and black mean that the moth is distasteful or poisonous.

They love to drink the nectar from wildflowers and prefer an established garden, where they can also eat lichen. Lichen occurs when fungi and algae grow together. In rainforests and alpine forests it forms a large carpet on the ground. Keep a look out for grey, green or yellow patches on your backyard rocks and trees.

The de Havilland Tiger Moth

The de Havilland DH.82 Tiger Moth is a 1930s British biplane designed by Geoffrey de Havilland and built by the de Havilland Aircraft Company. It was operated by the Royal Air Force (RAF) and other operators as a primary trainer aircraft. In addition to the type's principal use for ab initio training, the Second World War had RAF Tiger Moths operating in other capacities, including maritime surveillance and defensive anti-invasion preparations; some aircraft were outfitted to function as armed light bombers.

Additional overseas manufacturing activity also occurred, most of which took place during wartime. de Havilland Australia assembled an initial batch of 20 aircraft from parts sent from the United Kingdom prior to embarking on their own major production campaign of the DH.82A, which resulted in a total of 1,070 Tiger Moths being constructed in Australia. In late 1940, the first Australian-assembled Tiger Moth conducted its first flight at Bankstown, Sydney. Most Australian aircraft were delivered to the Royal Australian Air Force (RAAF), but several batches were exported, including 18 for the USAAF and 41 for the Royal Indian Air Force.

Many nations have used the Tiger Moth in both military and civilian applications, and it remains in widespread use as a recreational aircraft. It is still occasionally used as a primary training aircraft, particularly for pilots wanting to gain experience before moving on to other tailwheel aircraft. Many Tiger Moths are now employed by companies offering trial lesson experiences.

de Havilland DH 82A Tiger Moth, N81DH, in 1989. Photo: Towpilot - Own work

 

Some Narrabeen Lagoon Birds

by Joe Mills

Photographed September, 2026

Local Osprey eating its fish catch atop a pole at Narrabeen Lagoon ocean entrance

Middle Creek Reserve's lone White Egret fishing in its usual spot

nesting Masked Lapwing Plovers - in their usual spot at Sydney Sports Academy, Narrabeen, again this year

Young Kookaburra at North Narrabeen - Turimetta

Oystercatchers and White Faced Heron - fishing on Turimetta and Narrabeen

Middle Creek Reserve - lone White egret on shoreline

Middle Creek Reserve resident

Lapwing Plover nesting at Sports Academy, Narrabeen

 

Call-Out for Iconic Trees

The council is inviting the community to nominate remarkable public trees for inclusion on the new Iconic Tree Register, with nominations opening 25 September 2026.

The register will recognise significant public trees that contribute to the area’s natural beauty, biodiversity, history and sense of place.

Nominated trees must meet one or more criteria, including visual, ecological, historical,  botanic or social significance.

Most public native and exotic trees are eligible, including those exempt for removal under council or State Government controls if they demonstrate they meet the criteria.

The council stated it will launch the official Iconic Tree Register platform in January 2027, after the first nominations have been assessed. The interactive platform will contain images, locations and informative details of each tree.

A panel with expertise in biodiversity, arboriculture, heritage and landscape architecture will assess nominations against the Iconic Tree Register criteria.

The first intake will allow approximately 30 eligible trees to be recommended for inclusion, with future assessment rounds happening on a regular basis.

Listed trees will be managed under the council’s ''Tree Management Policy'' and monitored for health and condition.

For more information and to nominate, visit the council webpage.

A magnificent Grey Gum (E. punctata) example on the hill heading down Riviera Avenue with a Spotted Gum (Eucalyptus maculata) growing alongside it. Pic: AJG/PON

Pittwater Natural Heritage Association AGM 2026

All members welcome - bring a friend!

About PNHA

With urbanisation, there are continuing pressures that threaten the beautiful natural environment of Pittwater. Some impacts are immediate and apparent, others are more gradual and less obvious.

The Pittwater Natural Heritage Association has been formed to act to protect and preserve the Pittwater areas major and most valuable asset - its natural heritage.

PNHA is an incorporated association seeking broad based community membership and support to enable it to have an effective and authoritative voice speaking out for the preservation of Pittwater's natural heritage.

Our Aims

  • To raise public awareness of the conservation value of the natural heritage of the Pittwater area: its landforms, watercourses, soils and local native vegetation and fauna.
  • To raise public awareness of the threats to the long-term sustainability of Pittwater's natural heritage.
  • To foster individual and community responsibility for caring for this natural heritage.
  • To encourage the Council and the NSW Government to adopt and implement policies and works which will conserve, sustain and enhance the natural heritage of Pittwater.

Some of our interests and concerns include:

  • Native Tree Canopy
  • "Wildlife Friendly" Gardens
  • Weed Infestation
  • Keeping our Waterways Healthy
  • Beaches and Dunes

Find out more about PNHA and join in at: pnha.org.au

Avalon Armchair Gardeners: October 10 Meeting - Bush to Bowl 

Our next meeting at The Annexe Dunbar Park will be held on Saturday 10th October 2026 from 11am - 1.00pm

Our guest speaker is Clarence from Bush to Bowl based at Ingleside. It's a 100% Aboriginal owned social enterprise. It will be a hands-on workshop connecting community to country through traditional foodways. We'll explore native plants and bush foods, learning to identify, harvest and taste flavours rooted in over 60,000 years of culture. Leave with a deeper connection to the land beneath your feet and maybe a new favourite bush ingredient for your own kitchen

There will be some native plants and spices for sale

This will be a charged event and we encourage you to invite family, friends and neighbours to enjoy the experience. We will have bush tea and biscuits and a slice. The cost will be $20 per head and must be purchased online through Humanatix by 3rd October for catering purposes

Fran Colley and Celia Craig attended a presentation a few years ago and it was very enlightening

Any questions please don't hesitate to contact Celia direct.

Here is the link to purchase your ticket/s ($20)

Avalon Armchair Gardeners is an informal group for garden lovers to share knowledge, plants, social events and organise trips to open gardens, plant fairs and exhibitions. No plant knowledge or having your own garden required!

Avalon Annexe in Dunbar Park

New Crowther Report highlights significant impact of the Cumberland Plain Conservation Plan (CPCP) on Koalas in South West Sydney: 9 koalas killed in 1 week as report is released

The Sydney Basin Koalas Network says it has recorded its highest number of koala deaths in a single night since it began collecting data in July 2022.

Four koalas were killed by vehicles last Friday night (September 18) in the Campbelltown LGA, including a mother and joey on an unfenced section of Appin Road near Mallaty Creek, and two on Georges River Road.

Another four were killed earlier in that week on Appin, Picton, Heathcote and Wills roads.

With another vehicle strike on Heathcote Road on Monday September 21 a total of 9 koalas have been killed in 10 days in South West Sydney. This location has become a hotspot after the Heathcote Road upgrade. 

This week clearing of nearly 3ha of habitat began for another Heathcote Road upgrade between Woronora River and Lucas Heights. 

The group's manager Stephanie Carrick said it's been devastating for volunteers.

"I believe four is the most that has been killed in one night that we are aware of," she said. 

''It is beyond belief that the NSW Government is telling constituents a wildlife crossing at Mallaty Creek is not needed. Koalas are running out of habitat and yet the Government is pushing through with cutting off 116ha of habitat at Mallaty Creek, which also forms the most direct link to the koala corridors at the Nepean, within the Chlamydia free zone. ''

"I want to spend my time with the community, highlighting the work we are doing, but at the moment all I'm doing is counting dead koalas." 

Ms Carrick believes habitat clearing for new housing in Sydney's southwest is contributing to a recent spike in koala deaths. 

"Wills Road in Long Point is a new [koala death location]. And I'm always concerned about the new roads because it means that koalas are moving around in different ways," she said. 

"I believe they are moving around in different ways is because there habitat is changing."

The loss of more koalas comes as an expert report by University of Sydney ecologist Professor Mathew Crowther, 'Western Sydney Strategic Assessment – Cumberland Plain Conservation Plan' prepared for  network partner Save Sydney’s Koalas and the Environmental Defenders Office was released.

The report has found that the Cumberland Plain Conservation Plan (CPCP) is likely to significantly impact Habitat Critical to the Survival of the Koala (HCSK) as defined in the National Recovery Plan for the Koala, in particular east–west corridors essential for koala movement, dispersal, gene flow and meta-population processes in the Campbelltown population.

Professor Mathew Crowther’s findings are particularly significant given his previous role on the NSW Chief Scientist & Engineer’s Independent Expert Panel established to assess the adequacy of koala protection measures within the CPCP’s Wilton and Greater Macarthur Growth Areas.

Figure 1: Important Koala Habitat as mapped in CPCP Sub Plan B, much of which will be cleared, modified or fragmented. 

The report identified 304 hectares of mapped habitat critical to the survival of the koala will be lost within the Wilton and Greater Macarthur Growth Areas. It further identifies the loss of approximately 242 hectares of important primary, secondary, and tertiary habitat corridors and found significant deviations between the CPCP assessment and the National Koala Recovery Plan, including reliance on habitat suitability rather than HCSK criteria, incomplete koala records and the use of offsets to justify habitat loss despite offsets being excluded from the Recovery Plan’s habitat-gain objectives. Based on the available information, the Assessment Report indicates that approximately 1,100.6 hectares of important or supporting koala habitat will be impacted by activities authorised under the CPCP (Assessment Report, Table 30-19).

The Assessment Report also provides specific estimates of impacts on mapped habitat critical to the survival of the koala and important habitat corridors, together with the methodology used to identify these areas. 

It also highlights that corridor severance from roads and housing, delayed revegetation, uncertain crossing effectiveness, inadequate fencing and the population’s low genetic diversity mean mitigation and offsets cannot adequately compensate for the immediate and potentially irreversible loss of functional habitat and connectivity.

Key Findings from the Crowther Expert Report:

  • Breach of Federal Recovery Objectives: The CPCP violates Objective 1B of the National Koala Recovery Plan which requires a net increase in habitat (excluding offsets) every five years and the maintenance of stable populations. Offsets cannot replace immediate, irreversible corridor destruction.
  • Mallaty Creek Corridor Omitted & Severed: The Chief Scientist’s Report recognised 6 koala crossings along Appin Road - 4 remain unbuilt. There have been 10 koala deaths in the last 12 months at the missing Mallaty Creek crossing point.
  • Severe Landscape Fragmentation: Cutting primary (120 ha) and secondary (106 ha) corridors disrupts meta-population processes, isolating male koalas requiring ~50 ha home ranges and blocking juvenile dispersal.
  • Synergistic Extinction Risks: Low genetic diversity, disrepair of exclusion fencing (e.g.,Picton Road), and the late-2024 detection of Chlamydia mean further habitat loss poses an existential threat to Sydney's last expanding koala population.

To address the failure to the CPCP to meet the National Koala Recovery Plan, the CPCP should be strengthened through an independent reassessment of Habitat Critical to the Survival of the Koala, legal protection of ALL functional east–west corridors including Mallaty Creek, minimum corridor-width standards consistent with Chief Scientist advice, and mandatory delivery of wildlife crossings and associated fencing before development impacts occur, the report.

  1. Four Koala crossings on Appin Road as recognised in the Chief Scientist’s Report need to be built before any more development: that is, Beulah, Mallaty, Ousedale, Elladale in addition to Noorumba which still lacks vegetation. Formally incorporate and secure full, connected protection for the Mallaty Creek east-west koala corridor in local and strategic planning instruments.
  2. All Koala corridors east-west and north-south meet the Chief Scientist ‘s recommendations: That is an average minimum of 390m–425m widths, and an absolute minimum corridor width of 250m. That is, A (Menangle Creek), B (Woodhouse Creek), C
  3. (Nepean Creek), D (Mallaty Creek), E (Ousedale Creek) and F (Elladale Creek) and along the Nepean River. Suspend Section 146B activity approvals under the CPCP until independent mapping guarantees zero loss of functional koala corridors.
  4. Fix Safety Fencing & Crossings: Immediately fund and repair broken exclusion fencing along Picton Road and build a functional wildlife crossing at the Mallaty Creek Appin Road blackspot.
  5. Reject all CPCP modifications to Koala Habitat

Saul Deane, campaigner for the Total Environment Centre and member of Save Sydney's Koalas said: "Professor Crowther’s report confirms what local communities have feared: the CPCP is not a conservation plan, it is a blueprint for local extinction. While the NSW Government promises protection, koalas are dying on Appin Road because vital linkages like Mallaty Creek were ignored and left open to bulldozers. You cannot offset an endangered koala corridor that has been turned into a housing estate."

Damaging CPCP Modifications further Koala habitat destruction

''Rather than improve the CPCP, the Department of Planning have recommended a slew of more damaging modifications to koala habitat impacting every east-west Koala corridor.'' Sydney Basin Koala Network stated

''The Sydney Basin Koala Network strongly objects to the proposed Cumberland Plain Conservation Plan (CPCP) modifications, as they underestimate cumulative impacts and allow further fragmentation and loss of koala habitat and critically endangered ecological communities through inappropriate “avoided land” and offsetting arrangements. The NSW Government is allowing CPCP modifications through its established amendment process, but repeated site-by-site changes are progressively weakening the biodiversity principals of the plan by increasing development opportunities, reducing koala habitat and corridor protection, and undermining its original landscape-scale conservation objectives.''

Figure 2: Cumulative Impacts of CPCP modifications impacting every East-West koala corridor

''There are many options available to the Environment Minister to prevent the CPCP's significant, serious and irreversible impacts on the Koala. The 2027 five-year review provides a critical opportunity to incorporate Professor Crowther's new scientific information, address deficiencies in the original assessment and ensure that habitat loss and corridor fragmentation are avoided rather than retrospectively compensated through offsets.'' Sydney Basin Koala Network said

READ THE CROWTHER REPORT

Previously:

offshore oil and gas rig clean up on the taxpayer

Received: September 24 2026

The Australian Greens have revealed taxpayers are once again on the hook for cleaning up the mess left behind once oil and gas corporations are finished with their offshore rigs.

The government has offered a blank cheque for the clean up of an oil rig off the coast of Western Australia, after the two companies running it declared insolvency.

A government document reveals that there are no costings for the clean-up, the Greens state.

The last time this happened, with the Northern Endeavour, the decommissioning was estimated to cost $325 million but has since required $850 million.

Despite a legal requirement for onshore mining companies to pay a bond for site clean-ups, there is none for offshore oil and gas companies.

This loophole was exposed in the Federal Court in August, and Labor has stated it will close this loophole through legislation next year.

In the meantime, big corporations are treating our oceans as a dumping ground for their old equipment and leaving the taxpayer liable for hundreds of millions, if not billions, of dollars in clean up fees.

Greens spokesperson for Healthy Oceans, Senator Vanessa Bleyer, said:

“Our oceans cannot wait any longer for this Labor government to end the free ride for the corporations that are polluting our oceans.

“Renters have to pay a bond. So do onshore mining companies.  Yet offshore oil and gas corporations do not.

“There are 6000 kilotons of oil and gas infrastructure sitting in our oceans which will need to be cleaned up, at an estimated cost of $60 billion, otherwise it will continue to leach poison into our waters.

“The Australian Maritime Union wants this legislation, environment groups want this legislation, but the corporations do not.

“The government must stop acting in the interests of its corporate donors, and make these big oil and gas corporations clean up their act.”

West Gables biodiversity certification application: Have Your Say

An application has been made by Stockland Development Pty Ltd and Allam Land No. 11 Pty Ltd for biodiversity certification of land at Old Pitt Town Road and Boundary Road, Gables.

The application is open for public comment until 26 October 2026.

Biodiversity certification is a government created and sanctioned mechanism that enables developers to destroy habitat and wildlife. The certification process identifies areas that can be developed/destroyed after they are certified and measures to ''offset the impacts of development'' have been approved (money handed over). The NSW Government's Biodiversity Credits Market Sales Dashboard lists what can be bought or paid for - residents may be surprised by how cheap it is to accelerate extinctions.

This one is for around 76.42 hectares of land at West Gables.

The supporting documentation for this one points out, in just one instance, that:

'Three threatened microchiropteran bats were recorded as definitely present across the BCAA during surveys including.

• Micronomus norfolkensis (eastern coastal free-tailed bat) – ecosystem credit  species

• Miniopterus orianae oceanensis (large bent-winged bat) – dual credit species

• Myotis macropus (southern myotis) – species credit species

An additional four threatened microbat species were also potentially present, including.

• Falsistrellus tasmaniensis (eastern false pipistrelle) – ecosystem credit species

• Saccolaimus flaviventris (yellow-bellied sheathtail-bat) – ecosystem credit species

• Scoteanax rueppellii (greater broad-nosed bat) – ecosystem credit species

• Vespadelus troughtoni (eastern cave bat) – species credit species

Of these fauna species, only one requires offset to be calculated for impacts to habitat, being southern myotis. A species polygon has been provided for southern myotis and offsets calculated. Ecosystem credit species do not require the preparation of a species polygon. Dual credit species and species credit species require the preparation of a species polygon, unless there is no breeding habitat within the BCAA or within 2 km of the BCAA. No breeding habitat such as caves, cliffs, disused mines or tunnels were present within the BCAA or within 2 km of the BCAA. Therefore, no species polygon for eastern cave bat, or large bent-winged bat was required.'

The proposed BCAA is bordered by Old Pitt Town Road to the south and Boundary Road to the west, with future residential communities to the north, east and south. Remnant vegetation and regrowth vegetation is present belonging to three native plant community types (PCTs):

  1. Cumberland Shale Plains Woodland - listed as critically endangered (to extinction)
  2. Cumberland Shale-Sandstone Ironbark Forest, - listed as critically endangered (to extinction)
  3. Southern Lower Floodplain Freshwater Wetland - listed as endangered (to extinction)

Gables is 52 kilometres west of the Sydney central business district in the local government area of The Hills Shire. The Gables is a residential development within the suburb that is currently being developed by Stockland. It is the biggest master planned community in The Hills District and covers 330 hectares (820 acres). When The Gables was first planned in 2015, it was planned to comprise over 4,000 dwellings, a primary school, two sports fields, a 5.5-hectare (14-acre) town centre and a 4-hectare (9.9-acre) lake central to the development.

Celestino was the original developer of The Gables until March 2020, when Celestino sold the remaining 293 hectares (720 acres) of undeveloped land to Stockland for A$415 million. At the time of the sale, Celestino had already developed 994 dwellings.

As part of the biodiversity certification process, the applicant must make the application available on their website and invite the public to make submissions on the application. 

To view the application including the Biodiversity Certification Assessment Report and application form, and to make a submission, please visit West Gables Biodiversity Certification Application

After submissions close, the applicant must provide a report to the Department of Climate Change, Energy and the Environment that includes the applicant’s response to any submissions from the public.

Have your say 

You can submit your feedback on the proposed biodiversity certification until Monday 26 October 2026. 

You can provide your submission online at: www.stockland.com.au/west-gables 

$6 million for research on climate and mental health

Announced: Thursday September 24, 2026

The Australian Government states it is addressing the human health impacts of climate change, with $6 million for Australia’s leading researchers to study and combat the mental health challenges of climate change.

The Australian Government has awarded $6 million to 3 new research projects through the Medical Research Future Fund.  

Projects will study and devise methods to improve the mental health and wellbeing of people affected by climate change, with a particular focus on First Nations people.

Adelaide University, the University of Melbourne and the Menzies School of Health Research have each been awarded almost $2 million each to research, advise on policy, and implement local community strategies. Each of these projects was identified through a competitive application process, and assessed by independent assessment committees.

Climate change disproportionately affects First Nations communities as the distress of unprecedented droughts, longer summers and continued extreme weather events lead to heritage and environmental loss. Two of the three projects will include a focus on the experience of First Nations communities. 

The Hon Rebecca White MP, Assistant Minister for Health and Aged Care, Assistant Minister for Indigenous Health and Assistant Minister for Women, stated:

“The grants from the Albanese Government will provide some of Australia’s top researchers with the funds they need to improve mental health support for Australian’s impacted by climate change.

“These projects will deliver a range of practical, community-led responses to emerging mental health challenges with an important focus on First Nations communities impacted by climate change.”

Assistant Minister McBride stated:

“Two in five young people experience mental health challenges each year. These aren’t just numbers - they’re our family, our friends, our teammates and our colleagues.

“We’re living through challenging times, and supporting the mental health of Australians remains a clear priority for the Albanese Labor Government.

“If you’re feeling overwhelmed, I encourage you to speak with a health professional at your local Medicare Mental Health Centre or reach out to headspace.”

If you need someone to talk to, please call:

  • Lifeline on 13 11 14
  • Kids Helpline on 1800 551 800
  • MensLine Australia on 1300 789 978
  • Suicide Call Back Service on 1300 659 467
  • Beyond Blue on 1300 22 46 36
  • Headspace on 1800 650 890
  • QLife on 1800 184 527

Full details of the awarded grants are in the table below. 

NSW Snapper Harvest Strategy: Have Your Say

The government is seeking feedback on a draft harvest strategy for NSW Snapper. Share your views on the draft harvest strategy and management framework, which will contribute to the sustainable management of Snapper in NSW.

Public consultation commenced on 1 September 2026 and was initially set to close on 18 October 2026. The consultation period has been extended until 15 February 2027 to ensure opportunity for all stakeholders to provide feedback.

A draft harvest strategy for NSW Snapper has been developed, along with a new stock assessment identifying the stock is at sustainable but low levels.

Documents

The government states on the consultation webpage:

'Harvest strategies are a best-practice way to manage fisheries. They provide a clear plan for balancing environmental, economic, social and Aboriginal cultural interests while helping to keep fish stocks healthy for future generations.

A new integrated stock assessment has estimated the NSW component of the Snapper stock to be approximately 23% of unfished biomass. The assessment indicates the NSW stock has been building from lower levels since the 1990s, so there is some confidence stock biomass will continue increasing under similar catch levels.

The harvest strategy sets clear goals to build the NSW stock to target levels. The first goal is to build the stock to 30% of its unfished biomass. Over time, the aim is to build the stock further to 50% of unfished biomass.

To help achieve this building goal, the harvest strategy sets initial total annual catch (fishing mortality) to 300 tonnes per year, and a defined share to the commercial and recreational sectors. Assessment modelling estimates building to 30% of unfished biomass in 2035 under this level of total catch.

Based on current data, the following management changes would be needed to keep Snapper catches at or below the target level, and within sector shares. These arrangements will be reviewed and updated before commencement and as new information becomes available:'

*Recreational and charter boat limits are not proposed for Snapper.

**Current data indicates a monthly limit of around 950 kg per endorsement holder. Limits will be recalculated before commencement and for each fishing period.

Have your say by filling in a submission form HERE

Consultation will be open from Tuesday 1 September until Monday 15 February 2027.

Your feedback will help to finalise the harvest strategy and management actions to improve the long-term health of the NSW Snapper stock. Please review the harvest strategy and FAQs for further information.

NSW Yellowtail Kingfish Harvest Strategy: Have Your Say

The Government is seeking feedback on a draft harvest strategy for Yellowtail Kingfish in NSW. Share your views on the draft harvest strategy and management framework, which will contribute to the sustainable management of Yellowtail Kingfish in NSW.

Public consultation commenced on 1 September 2026 and was initially set to close on 18 October 2026. The consultation period has been extended until 15 February 2027 to ensure opportunity for all stakeholders to provide feedback.

The government states on the consultation webpage:

'A draft harvest strategy for NSW Yellowtail Kingfish has been developed, along with a new stock assessment identifying the stock as depleted.

Harvest strategies are a best-practice way to manage fisheries. They provide a clear plan for balancing environmental, economic, social and Aboriginal cultural interests while helping to keep fish stocks healthy for future generations.

A new integrated stock assessment has estimated the NSW component of the Yellowtail Kingfish stock to be approximately 5.5% of unfished biomass. The assessment indicates the NSW stock has remained at a relatively consistent but unresponsive level over the past 2 decades.

The harvest strategy sets clear goals to rebuild the NSW stock to healthy levels. The first goal is to rebuild the stock to 30% of its unfished biomass. Over time, the aim is to rebuild the stock further to 50% of unfished biomass.

To help achieve this rebuilding goal, the harvest strategy sets initial total annual catch (fishing mortality) to 120 tonnes per year, which will be shared equally between the recreational and commercial sectors (60 tonnes each). Assessment modelling estimates rebuilding to 20% of unfished biomass in around 9 years, and 30% in around 12 years under this level of total catch.

Recent average total catches are around 250 tonnes per year. Based on current data, the following management changes would be needed to keep Yellowtail Kingfish catches at or below the target level, and within sector shares. These arrangements will be reviewed and updated before commencement and as new information becomes available.

*A recreational catch and release only season may be needed if the bag, possession and boat limits are not sufficient to reduce recreational catch to 60 tonnes for each fishing period. The duration would be assessed based on updated recreational data.

**Current data indicates a monthly limit of around 650 kg per endorsement holder to maintain catch to 60 tonnes for each fishing period. Limits will be recalculated before commencement and for each fishing period.

Lord Howe Island waters are currently excluded from the proposed management changes, recognising Yellowtail Kingfish are likely to comprise a distinct, self-recruiting component of the eastern stock.

Have your say by filling in a submission form HERE.

Consultation will be open from Tuesday 1 September until Monday 15 February 2027.

Your feedback will help to finalise the harvest strategy and management actions to improve the long-term health of the NSW Yellowtail Kingfish stock. Please review the harvest strategy and FAQs for further information.

NSW Draft National Parks Establishment Plan: Have Your Say

The NSW Government is seeking community feedback on the draft National Parks Establishment Plan (the draft plan). (PDF: 19.74MB)

National parks play an important role in conserving biodiversity and protecting cultural heritage across NSW.

The draft plan updates the current National Parks Establishment Plan (2008), providing a clear framework for growing the national park estate to protect NSW's unique natural and cultural heritage for future generations. This includes how land will be assessed and prioritised for future investment.

The plan uses 7 assessment themes to support decision-making, including:

  1. Conservation value
  2. Ecological connectivity and resilience
  3. Cultural heritage
  4. Climate change adaptation and mitigation
  5. Restoration and rehabilitation
  6. Management effectiveness
  7. Visitor experience

Your feedback will help shape the final plan by making sure a range of community perspectives and knowledge are considered.

Have your say

the government is seeking input from community members, stakeholder and interest groups to help:

  • highlight priorities, concerns or gaps
  • improve the clarity and practicality of the plan.

Review the draft plan and share your feedback by completing the survey or uploading a submission by 11.59pm Monday 12 October 2026. Visit the consultation webpage here

NSW consulting on Australia's first mandatory solar panel recycling scheme: Have your say

Opened: Monday September 21 2026
Closes: Monday 16 November 2026

The Minns Government is consulting on Australia's first mandatory solar panel recycling scheme to ensure valuable solar panel materials are recovered, reused and recycled rather than sent to landfill.

The proposed regulation will help drive investment and jobs in the solar recycling industry and support the potential development of a solar panel remanufacturing industry in NSW.

NSW leads the nation in solar uptake, with more than 1.18 million rooftop solar systems across homes, businesses, schools and community facilities. As these systems age, increasing numbers of solar panels are ending up in landfill.

Around 14,000 tonnes of solar panel waste is generated in NSW each year. This is predicted to increase to 89,000 tonnes by 2045.

The proposed mandatory product stewardship scheme would require solar panel brand owners to take responsibility for the end-of-life management of their products, helping fund collection, recycling and resource recovery across NSW.

Recycling solar panels is not simply about reducing waste. It is also about capturing valuable resources and creating new economic opportunities.

Valuable materials such as aluminium, glass, silicon, copper and silver can be recovered and reused in new products and manufacturing industries. As larger volumes of materials are recovered, NSW will be better placed to build local supply chains, strengthen manufacturing capability, encourage innovation and create skilled jobs across the state.

To help shape this opportunity, the NSW Government has released an issues paper alongside the draft regulation, seeking feedback on how the state can support the growth of solar panel recycling, remanufacturing and manufacturing industries.

Consultation will seek views from unions, industry, recyclers, manufacturers, researchers, local government, workers and the community on the opportunities, challenges and investment needed to build a circular economy for solar panels in NSW.

Feedback will inform the design of the mandatory product stewardship scheme with the aim of establishing a system that reduces waste, recovers valuable resources and positions NSW as a leader in solar panel recycling and circular manufacturing.

Submissions on the draft regulation and issues paper are now open. For more information and to have your say, visit /yoursay.epa.nsw.gov.au/solar.

Minister for the Environment Penny Sharpe said:

“NSW has embraced rooftop solar, and now we’re making sure those panels don’t become tomorrow’s landfill problem. Solar panels contain valuable materials that can be recovered and put back to work.

“A mandatory product stewardship scheme can help build a circular economy for solar panels, while supporting new recycling and manufacturing opportunities here in NSW.” 

Garigal + Ku-ring Gai National Park: 1080 Operation

NSW National Parks and Wildlife Service will be conducting a baiting program using manufactured baits, fresh baits and Canid Pest Ejectors (CPEs) containing 1080 poison (sodium fluroacetate) for the control of foxes. 

The program is continuous and ongoing between 1 August 2026 and 31 January 2027 in Garigal National Park. Don’t touch baits or ejector devices. Penalties apply for non-compliance. 

Ku-ring Gai Chase Applies from Fri 31 Jul 2026, 10.25pm to Mon 01 Feb 2027, 2.26am. 

NSW National Parks and Wildlife Service will be conducting a baiting program using manufactured baits, fresh baits and Canid Pest Ejectors (CPEs) containing 1080 poison (sodium fluroacetate) for the control of foxes. The program is continuous and ongoing between 1 August 2026 and 31 January 2027 in Ku-ring-gai Chase National Park.

All baiting locations are identifiable by signs.

Domestic pets are not permitted in NSW national parks and reserves. Pets and working dogs may be affected (1080 is lethal to cats and dogs). Pets and working dogs must be restrained or muzzled in the vicinity and must not enter the baiting location. In the event of accidental poisoning seek immediate veterinary assistance.

Fox baiting in these reserves is aimed at reducing their impact on threatened species.

For more information, contact the local park office on:

  • Forestville 9451 3479 (business hours)
  • NPWS after-hours call centre: 1300 056 294 (after hours)

Strategic assessment of NSW forestry underway - '20 more years of logging': Have your say

The NSW Government wants Canberra to approve 20 more years of public native, plantation, and private native forestry across its three Regional Forest Agreement (RFA) regions under a single program, with the sector’s exemption from national environment law ending on 1 July 2027.  

According to draft terms of reference the government released on Friday, two days after it entered a strategic assessment agreement with Federal Environment Minister Murray Watt, signed for NSW by Environment Minister Penny Sharpe and Agriculture Minister Tara Moriarty, the NSW Government is progressing its alignment with the new Commonwealth Government environment laws that affect the regulation of forestry operations by tasking the NSW Natural Resources Commission (NRC) to develop a Strategic Assessment for forestry operations in NSW.

The assessment by the NRC will cover public native forestry, plantation and private native forestry operations across forests sitting within NSW’s defined Regional Forest Agreement boundaries.

The long-standing exemption for forestry operations between the Commonwealth and NSW across large areas of NSW forests, known as the Regional Forest Agreements (RFA), will cease on 1 July 2027 following the introduction of new environment legislation by the Commonwealth in November last year.

'The RFAs in NSW cover forests in Eden, the North-East and Southern NSW and set obligations and commitments for forest management.' the government stated

'The assessment will consider the impacts from forestry operations on nationally significant animals, plants, habitats and places to ensure they are appropriately identified and managed.' the government stated

From 1 July 2027, forestry operations taking place in RFAs will need to comply with the same rules and standards as other industries covered under the EPBC Act.

The NSW Government is now releasing for public consultation the draft terms of reference for the strategic assessment.

'Once the strategic assessment is complete, the NSW Government will work on a long-term bilateral agreement with the Australian Government to accredit NSW forestry operations.' the government said

'The Minns Labor Government is continuing to develop a Forestry Industry Action Plan to ensure a sustainable forestry industry that is aligned with environmental and economic priorities.'

Consultation commenced on 18 September 2026 and finishes on 16 October 2026. Have your say via Strategic Assessment of Forestry in RFAs.

Federal Minister for the Environment and Water Murray Watt said:

“The Albanese Government congratulates the Minns Government on reaching this important milestone, which will deliver better protections for the environment and more certainty for industry.

“As part of our landmark national environmental law reforms passed by the Australian Parliament at the end of last year, RFA forestry will need to meet the same Federal environmental requirements as other industries.

“We’re providing up to $8.5 million to NSW to ensure it’s meeting national benchmarks, through the development of landscape-scale approval pathways like the strategic assessment.

“We believe in a strong and environmentally sustainable future for the New South Wales forestry industry, and we look forward to continuing work with the Minns Government on this.”

NSW Minister for the Environment Penny Sharpe said:

“The Minns Labor Government is working with the Commonwealth to ensure forestry operations in NSW meet the same national environmental standards that are applied to other industries across Australia.

“This is an important step towards strengthening environmental protections in NSW.”

NSW Minister for Agriculture and Regional NSW Tara Moriarty said:

“The Minns Government is committed to working constructively with the Commonwealth to secure a pathway that supports sustainable forestry, strong environmental standards and certainty for industry and regional communities.

“We will utilise the assessment and engagement process with the Commonwealth to deliver a more practical and efficient approval process for industry and support a sustainable domestic timber sector.”

20 More Years of Logging: Response from environment groups, scientists and frontline forest campaigners not in yet

The announcement comes a week after a coalition of environment groups, scientists and frontline forest campaigners welcomed an agreement between the federal Greens and Labor that will retain the Improved Native Forest Management method, removing the final hold up to legislating the Great Koala National Park, and securing major new protections for forests and the climate.

On Thursday September 10 The Nature Conservation Council of NSW said the agreement came days after more than 100 forest and climate campaigners, scientists, elected representatives and conservation organisations signed an open letter urging Senators to retain the method as a pathway to end native forest logging.

The outcome provides governments with a pathway to stop native forest logging, protect forests for 100 years and invest the millions of dollars needed to restore and manage forests damaged by decades of industrial logging.

The changes agreed to on September 10 will:

  • create the first federal legal mechanism allowing states to ban coal and gas companies from using ACCUs generated through INFM projects, including preventing credits being channelled through third parties;
  • increase the minimum reduction in native forest logging required across Regional Forest Agreement areas before projects can generate carbon credits, rising from 20 per cent to 25 per cent for projects registered from 2028 and 30 per cent from 2030; and
  • close a loophole that could have allowed regrown native forests to be reclassified as plantations and excluded from the method’s protections.

Clancy Barnard, Forests Campaigner for Nature Conservation Council NSW, said:

“In NSW, the agreement will give legal force to the state government’s commitment to stop coal and gas companies accessing ACCUs generated via the INFM method.

“This is the first time we have seen a commitment that an entire class of ACCUs will not be sold to coal and gas companies.

"We hope these steps mark a shift in the carbon market toward higher integrity methods, and broader restrictions on offsets being used by fossil fuel projects.

“Of equal importance, every dollar of revenue generated through future INFM projects in NSW will be reinvested into forest management and restoration.

“If applied across NSW’s remaining public native forests, this would increase investment in ecological management and restoration by around 30 per cent.

“We applaud Labor and the Greens for working together to deliver these safeguards.

“We backed this method, after fighting to get key changes to it, because we believe it gives us one of the best opportunities to finally end native forest logging and invest in the restoration our forests desperately need.

“Securing a commitment that every dollar generated from future forest projects will go back into restoring and managing those forests is a major win for nature.

“Our forests desperately need that investment after decades of logging, degradation, invasive species and increasingly severe climate impacts.

“This means ending logging will not only stop the damage. It will help pay for the enormous job of bringing these forests back to health.”

Susie Russell, a long-term campaigner with the North Coast Environment Council, said:  

“We applaud the Greens, crossbench and government for working together to deliver these changes.

“Now it is time to not only end logging in NSW but invest in restoration and regeneration on a massive scale.

“Ending logging allows rainforest and wetter forest communities suppressed by decades of logging to return. It allows trees to grow old, hollows to form, soils and waterways to recover and habitat for koalas, greater gliders and other threatened species to be restored.

“It also allows us to invest properly in that recovery, with substantially more funding for ecological restoration, weed and pest control, threatened species recovery and long-term forest management.

“As our climate becomes hotter and bushfires become more dangerous, ending logging and allowing wetter forest communities and rainforest to recover is one of the most important things we can do to build their resilience.”

North East Forest Alliance President Dailan Pugh OAM, said:

“The end goal has always been to end native forest logging. Now that the NSW Government has a funded pathway to end logging of public native forests they have no excuse not to.

“They need to begin the transition now. Our Koalas, Greater Gliders and a myriad of other suffering wildlife need their homes urgently protected if there is an intent to save them from extinction. They can't wait any longer. 

“We expect the NSW Government will introduce legislation to enact the Great Koala National Park within a month, and urge them to now commit to ending logging of public native forests and move forward with other proposals to protect our high value native forests.

“Stop the logging now. Protect the forests. Then get on with the enormous job of helping them recover.”

No response from environment groups, scientists and frontline forest campaigners to Friday's announcement and opening for feedback of the state government's draft Strategic Assessment for forestry operations in NSW has come in as this week's Issue goes to publication.

What they are trying to save (3 examples):

Wombats

Koalas

Yellow-bellied Gliders

Image Credits: The Nature Conservation Council of NSW

Unlocking faster and simpler assessments and approvals through environmental law reforms

Announced: Wednesday September 9, 2026

The rollout of the Albanese Government’s landmark national environmental laws is continuing at pace, with consultation now open on the next stage of the reforms, the government stated this week.

With a significant number of EPBC Act amendments having already commenced, this round of public feedback will help to finalise the landmark reforms that deliver better environmental protections and faster and clearer approvals for all proposals including vital housing, energy and minerals projects.

Consultation papers released today are seeking feedback on reforms for:

  • streamlining single project approvals
  • enabling landscape approvals
  • setting operating rules for the Restoration Contributions Holder
  • improving operational approaches to all pathways and increase transparency.

The new National Environmental Standards announced last month were a major step in the reforms, providing clearer, more consistent benchmarks that must be met for decisions made by the new, independent National Environmental Protection Agency.

Minister for the Environment and Water Murray Watt said public feedback was crucial as the Albanese Government rounds out its reforms to national environmental laws.

“These landmark reforms are helping to protect our environment while driving crucial housing, energy and minerals projects Australia needs,” Minister Watt said.

“I encourage all interested parties to have their say and to help shape the laws that will deliver the best outcomes for industry, the environment and our nation for generations to come.”

Consultation on this new stage of the environmental reforms is now open on the Department of Climate Change, Energy, Environment and Water’s Have Your Say website HERE.

The exposure draft will be released for public consultation later in the consultation period and submissions can be provided via the Department of Climate Change, Energy, the Environment and Water’s online consultation hub.

This round of public consultation will close at 9pm AEDT on Tuesday, 13 October 2026.

IPART Review of the water pricing framework for NSW data centres: Have your say on terms of reference

Have your say on our Draft Terms of Reference

The NSW Government has issued IPART a Draft Terms of Reference to review the water pricing and regulatory framework for data centres.

IPART is seeking feedback from all interested stakeholders on the scope of our review and the matters set out in the Draft Terms of Reference.

The review would recommend a framework for how data centre operators fund the upfront and ongoing costs of providing water services to them. Once the Terms of Reference are finalised, we will commence the full review and consult further with all stakeholders throughout that process.

Submissions on the Draft Terms of Reference close on 2 October 2026.

You can read the Draft Terms of Reference and IPART's Fact Sheet, and make a submission via the IPART website.

In preparing its advice, IPART is to consider the following matters:

1. Forecast capital and operating costs of connecting data centres to metropolitan water services

2. Demand risks of connecting large, high-intensity water users to existing supply sources and the impact on existing and future water customers

3. Supply augmentation costs and how these are allocated between data centres, existing and future water customers, and any other parties (including consideration of stranded asset risk)

4. Service levels required by data centres and how they differ from other large water users

5. The water security requirements of data centres and how these might be addressed in a regulatory and pricing framework

6. Safeguarding long-term water security (including drought management/water restrictions)

7. Incentivising data centres to optimise their use of water with energy consumption implications

8. NSW’s competitive position in attracting new investment and the broader economic benefits to NSW that data centres may provide including jobs, and investment in skills and innovation

9. A regulatory framework that provides for competitive neutrality for the different suppliers of water services (public water utilities, and Water Industry Competition Act 2006 licensees)

10. The approaches in other equivalent jurisdictions, as relevant.

11. Any other relevant legislative, policy, or environmental considerations that IPART considers may affect the water pricing and regulatory framework’s application to data centres.

The Factsheet states there will be additional opportunities to provide feedback during the review once IPART receive the final Terms of Reference from the NSW Government. 

IPART Webpage for consultation: www.ipart.nsw.gov.au/review/water/review-water-pricing-framework-data-centres

Background in August 2026 report: Framework for NSW Data Centres Released

Public comment opens on industrial port and dredging proposal threatening Exmouth Gulf-Ningaloo

  • WA EPA has released Gascoyne Gateway’s environmental review documents for its proposed industrial port in Exmouth Gulf for public scrutiny. 
  • AMCS-Protect Ningaloo is campaigning to stop the port that would attract shipping through a critical humpback whale resting and nursing ground, require extensive dredging and cause other wide-ranging impacts.
  • Exmouth Gulf, Ningaloo will become WA’s newest marine park and is under formal assessment for National Heritage listing – AMCS-Protect Ningaloo maintains that an industrial port would be entirely incompatible with these vital conservation measures.

Australians have 12 weeks to voice their concerns about the industrialisation of Exmouth Gulf after Western Australia’s Environmental Protection Authority (EPA) today released the Environmental Review Document for Gascoyne Gateway’s port proposal for public comment. Submissions close 16 November 2026.

The Australian Marine Conservation Society states the proposal poses such widespread potential impacts to matters of national environmental significance that it has also triggered a federal assessment that will be part of this public comment period.

Gascoyne Gateway wants to build an industrial port 10km south of Exmouth town next to Qualing Pool – a rare freshwater oasis that the WA Government has earmarked as a class A nature reserve. The port would attract large vessels including fuel tankers, cargo ships, cruise liners and other heavy shipping into Exmouth Gulf, which the WA Government has earmarked for a marine park and which is under formal assessment by the Australian Government as a National Heritage treasure. 

This ecologically rich marine and coastal area is closely linked to the World Heritage-listed Ningaloo Coast and holds high conservation value. The area is home to many threatened and listed species, including dugongs, turtles, manta rays, sea snakes and dolphins, as well as corals, seagrass meadows, and sponge gardens. The proposed port would attract massive ships that would pass through a critical resting and nursing ground for one of the world’s largest humpback whale populations, posing serious threats of vessel strike and disturbance. 

Tens of thousands of people have joined AMCS-Protect Ningaloo, the Exmouth-based Cape Conservation Group and many local community members, in opposing the proposal since plans were first announced in 2020.  Over 20,000 emails have been sent to the current and past WA environment ministers calling for them to reject the proposal because it would fundamentally diminish the environmental values of Exmouth Gulf.

AMCS Chief Executive and Protect Ningaloo Director Paul Gamblin said: 

“The Gascoyne Gateway industrial port and dredging proposal is completely incompatible with the environmentally fragile Exmouth Gulf – Ningaloo’s Nursery – and would change this marine wonder forever.  

“An industrial port proposal, jutting nearly a kilometre into Exmouth Gulf and dredging of more than a million cubic metres of the seafloor in one of the world’s most important whale nursing grounds beggars belief.

“Tens of thousands of people have already made clear that industrialisation is unacceptable for Exmouth Gulf. People know that Exmouth Gulf obviously is no place for a port – its future is one of conservation and sustainable, light-touch economic activity, not industrialisation.

“Both the WA and federal governments have signalled that they are committed to protecting Exmouth Gulf so it’s time they made it clear that the future of this natural wonder is economic activity that treads lightly on its fragile environment. They must reject this proposal.

Cape Conservation Group Chair Denise Fitch said: “Exmouth Gulf is where Ningaloo’s whales rest and give birth, where our dugongs and manta rays feed. Dredging a port in the middle of this precious nursery goes against the spirit of stewardship that’s made Ningaloo the conservation and tourism success it has become. 

“Ningaloo is already under pressure from climate change. We’ve recently experienced unprecedented coral bleaching and seagrass damage from marine heatwaves, and further destruction from Cyclone Narelle. Now is not the moment to be adding industrial stressors to this fragile ecosystem. And this is no place for an industrial port. 

“We encourage those who know and love Ningaloo’s nursery to make a submission to the EPA and say no to this unwelcome proposal.”

Protect Ningaloo is calling on Gascoyne Gateway to do the right thing, as two other companies which pursued industrial projects in the Gulf have already done, and withdraw its proposal. 

Overview of Proposed Project

Gascoyne Gateway Ltd proposes to build, own and operate a multipurpose marine complex in Exmouth that will service a variety of vessels including but not limited to cruise liners and associated ecotourism activities, Defence and marine supply vessels. The project will not be utilised for livestock or iron ore.

The Proposal site is located 10 kilometres south of the Exmouth township and immediately south of the Ingram Street light industrial area; opposite the Exmouth landfill site and to the north of the Wilderness Estate residential area.

The proposal has a land-based component (including fuel storage and laydown, supporting marine facilities, desalination plant, renewables precinct, and access and utilities corridor), and a marine component (including marine infrastructure, vessel berths/channels, and anchorages).

An Environmental Review Document (ERD) has been prepared by Gascoyne Gateway Ltd in accordance with Environmental Protection Authority procedures and is released for public review.

The ERD describes the proposal, examines the likely environmental effects and the proposed environmental management procedures associated with the proposed development.

The Proposal includes a land based component (106.54 ha footprint within a 119.02 ha terrestrial development envelope) to support the marine infrastructure (61.63 ha marine footprint within and 79.44 ha marine development envelope) which includes a combination rock groyne and pylon steel construction to a berth-face. The berth face will require 13.5 m of cleared depth (at chart datum, equivalent to depth at LAT) to meet design vessel draughts, achieved by both natural depth and some dredging of sand and seabed limestone at the berth pocket. Marine construction includes piling and dredging, with dredge spoil used in the causeway construction. Three anchorage locations of 1nm diameter each are located in Exmouth Gulf approximately 9.5 km to the north east of the end of the causeway, within a nominal anchorage development envelope of 1153.14 ha. 

The ERD is available for download from Gascoyne Gateway Marine Complex | EPA Western Australia under 3. Assessment > Environmental Review.

The document is also available on the proponent’s website at Gascoyne Gateway Marine Complex.

Submissions should be made here: https://consultation.epa.wa.gov.au/assessment-and-compliance/gascoyne-gateway-marine-complex-per/

Submissions close November 16

Katandra Bushland Sanctuary Season 2026

Dedicated to the Study & Preservation of Native Flora & Fauna of the warriewood, Mona Vale & Ingleside Area

Website: katandrabushlandsanctuary.com/home

Email: katandrainfo@gmail.com

Katandra is open to visitors 10am to 4pm every Sunday from July to October (inclusive). Group visits can be organised at alternative times. Please visit the Katandra Bushland Sanctuary website for more information.

Katandra Bushland Sanctuary is situated in on the face of the Ingleside escarpment, overlooking the Warriewood Valley and the seaside suburb of Pittwater's Mona Vale. Enter Lane Cove road via the traffic lights to access.

PNHA Activities 2026

Our walks for 2026 are listed below. 

You are very welcome to bring friends and older children on these outings. Please book by emailing pnhainfo@gmail.com and include  your PHONE NUMBER so we can contact you in case of changes because of weather etc. 

Looking forward to getting out and about in our lovely area! 

Your PNHA Committee

Pittwater Natural Heritage Association

The Pittwater Natural Heritage Association has been formed to act to protect and preserve the Pittwater areas major and most valuable asset - its natural heritage.

PNHA is an incorporated association seeking broad based community membership and support to enable it to have an effective and authoritative voice speaking out for the preservation of Pittwater's natural heritage.

Our Aims

  • To raise public awareness of the conservation value of the natural heritage of the Pittwater area: its landforms, watercourses, soils and local native vegetation and fauna.
  • To raise public awareness of the threats to the long-term sustainability of Pittwater's natural heritage.
  • To foster individual and community responsibility for caring for this natural heritage.
  • To encourage Pittwater Council and the NSW Government to adopt and implement policies and works which will conserve, sustain and enhance the natural heritage of Pittwater.

Some of our interests and concerns include:

  • Native Tree Canopy
  • "Wildlife Friendly" Gardens
  • Weed Infestation
  • Keeping our Waterways Healthy
  • Beaches and Dunes

Act to Preserve and Protect!

If you would like to join us, please fill out the Membership Form. Visit: https://pnha.org.au

Sunday September 27. Spring in the Bush: Terrey Hills

Meet 9am at corner of Mallawa Rd and Bulara St, Terrey Hills. Walk ends about 11am. With a focus on botany, we’ll see flowering plants in the Proteaceae plant family, waratahs, endangered Grevillea caleyi , and others in the major Australian Proteaceae plant family. You can choose to lengthen this walk which connects to the Perimeter Track. Birds, too.

Sunday October 25: Katandra by Night

Meet 6.45pm at Katandra Bushland Sanctuary on Lane Cove Rd Ingleside. Walk ends about 8.45pm. Sunset is about 7.15. The bush by night is wonderful. We hope to see fireflies again as on previous walks here in October. Bring a torch, or headtorch, preferably with a red light option so as not to dazzle possums. Moderate fitness needed for the bush track and steps. Limit: 15 people, so please book early. 

Sunday November 22: Deep Creek Reserve

Meet 9am in Deep Creek reserve, off Wakehurst Parkway. Walk ends about 11am. Birds and bushland. From the bridge across the creek we may see Dollarbirds, summer breeding migrants that nest in hollows, with their youngsters. Black Bitterns have been observed along the creek margins, so bring binoculars. 

Coming up at Kimbriki

Solar for apartment residents: Co-funding

Less than 2% of apartment buildings in NSW have solar installed, but the NSW Department of Climate Chnage, Energy, the Environment and Water are on a mission to change this.

Their Solar for Apartment Residents grant is co-funding shared solar panel installations on eligible apartment buildings and multi-unit dwellings and has already helped thousands of households.

They’ve extended the program to help more homeowners and renters reduce their energy bills and have also allocated extra funds through a separate Boost grant to help priority communities too.

Application closes: 4 December 2026, 5:00 pm

Share this with your Owners Corporation or Stata Manager and check your building's eligibility at: www.nsw.gov.au/grants-and-funding/solar-for-apartment-residents-soar-grant-program

 

Dedicated alpine weather page part of latest BOM website improvements

The Bureau of Meteorology has delivered its latest website update.

In this release navigation has improved, there’s a new dedicated alpine weather page in time for the ski season, and the weather map has more place names.

Bureau of Meteorology CEO Dr Stuart Minchin said the update was a direct response to community feedback.

“Since launch, we've had requests for more locations to be added to the weather map,” Dr Minchin said.

“Our website is there to serve all Australians. We've now added more than 100 place names, primarily in the Northern Territory and Queensland.

“We'll be adding hundreds more in the months ahead.”

The weather map will now remember users’ most recent pan and zoom position, keeping the settings the same for the next time the page is viewed.

For example, if your last visit was a maximum zoomed-in view of Mount Isa, Queensland, this is the view you'll see next time you visit the rain radar.

“Changes like these will make it easier for everyone to find what they need,” Dr Minchin said.

Other changes include the UV Index being restored to the hourly forecast and updating the presentation of flood warnings.

A new alpine weather page provides weather map layers for snow, wind and temperature, and forecasts for snow resorts, towns, and remote areas in Australia's alpine regions in one page.

The updated Alpine regions page provides weather maps and forecasts for snow resorts, towns, and remote areas in Australia's alpine regions.

Alpine regions offers information across 2 tabs:

  • Forecasts – alpine districts and locations
  • Map – 3 hourly snow, wind and temperature forecasts.

Navigating the website has become easier with changes to tabs and page layouts on a number of key pages such as Forecasts and observations, Coasts and Oceans and state, territory and district pages.

“People have told us that navigating to forecasts and observations for districts and states was hard,” Dr Minchin said.

“We’ve paid close attention to this feedback.

“Combined with last month's search improvements, this will make it easier for regional web users to find out if their district is expecting rain or sunshine.”

Updates will continue to be made to the website in response to the feedback received from the community.

Information about recent changes is available at bom.gov.au/website-help/website-updates

The ski season starts on the June long weekend and runs until October's long weekend in NSW. 

The Kiandra Alpine Club's Snow Carnival, 1900. Photo: Kerry

Birdwood Park Bushcare Group Narrabeen

The council has received an application from residents to volunteer to look after bushland at 199/201 Ocean street North Narrabeen.

The group will meet once a month for 2-3 hours at a time to be decided by the group. Activities will consist of weeding out invasive species and encouraging the regeneration of native plants. Support and supervision will be provided by the council.

If you have questions or are interested in joining the group please email the council on bushcare@northernbeaches.nsw.gov.au

Sydney Wildlife (Sydney Metropolitan Wildlife Services) Needs People for the Rescue Line

We are calling on you to help save the rescue line because the current lack of operators is seriously worrying. Look at these faces! They need you! 

Every week we have around 15 shifts either not filled or with just one operator and the busy season is around the corner. This situation impacts on the operators, MOPs, vets and the animals, because the phone line is constantly busy. Already the baby possum season is ramping up with calls for urgent assistance for these vulnerable little ones.

We have an amazing team, but they can’t answer every call in Spring and Summer if they work on their own.  Please jump in and join us – you would be welcomed with open arms!  We offer lots of training and support and you can work from the office in the Lane Cove National Park or on your home computer.

If you are not able to help do you know someone (a friend or family member perhaps) who might be interested?

Please send us a message and we will get in touch. Please send our wonderful office admin Carolyn an email at  sydneywildliferescueline@gmail.com

622kg of Rubbish Collected from Local Beaches: Adopt your local beach program

Sadly, our beaches are not as pristine as we'd all like to think they are. 

Surfrider Foundation Northern Beaches' Adopt A beach ocean conservation program is highlighting that we need to clean up our act.

Surfrider Foundation Northern Beaches' states:
''The collective action by our amazing local community at their monthly beach clean events across 9 beach locations is assisting Surfrider Foundation NB in the compilation of quantitative data on the volume, type and often source of the marine pollution occurring at each location.

In just 6 sessions, clear indicators are already forming on the waste items and areas to target with dedicated litter prevention strategies.

Plastic pollution is an every body problem and the solution to fixing it lies within every one of us.
Together we can choose to refuse this fate on our Northern beaches and turn the tide on pollution. 
A cleaner coast together !''

Join us - 1st Sunday of the month, Adopt your local for a power beach clean or donate to help support our program here. https://www.surfrider.org.au/donate/

Event locations 
  • Avalon – Des Creagh Reserve (North Avalon Beach Lookout)
  • North Narrabeen – Corner Ocean St & Malcolm St (grass reserve next to North Narrabeen SLSC)
  • Collaroy– 1058 Pittwater Rd (beachfront next to The Beach Club Collaroy)
  • Dee Why Beach –  Corner Howard Ave & The Strand (beachfront grass reserve, opposite Blu Restaurant)
  • Curl Curl – Beachfront at North Curl Curl Surf Club. Shuttle bus also available from Harbord Diggers to transport participants to/from North Curl Curl beach. 
  • Freshwater Beach – Moore Rd Beach Reserve (opposite Pilu Restaurant)
  • Manly Beach – 11 South Steyne (grass reserve opposite Manly Grill)
  • Manly Cove – Beach at West Esplanade (opposite Fratelli Fresh)
  • Little Manly– 55 Stuart St Little Manly (Beachfront Grass Reserve)
… and more to follow!

Surfrider Foundation Northern Beaches

This Tick Season: Freeze it - don't squeeze it

Notice of 1080 Poison Baiting

The NSW National Parks and Wildlife Service (NPWS) will be conducting a baiting program using manufactured baits, fresh baits and Canid Pest Ejectors (CPE’s/ejectors) containing 1080 poison (sodium fluoroacetate) for the control of foxes. The program is continuous and ongoing for the protection of threatened species.

This notification is for the period to 31 July 2026 at the following locations:

  • Garigal National Park
  • Lane Cove National Park (baits only, no ejectors are used in Lane Cove National Park)
  • Ku-ring-gai Chase National Park
  • Sydney Harbour National Park – North Head (including the Quarantine Station), Dobroyd Head, Chowder Head & Bradleys Head managed by the NPWS
  • The North Head Sanctuary managed by the Sydney Harbour Federation Trust
  • The Australian Institute of Police Management, North Head

DO NOT TOUCH BAITS OR EJECTORS

All baiting locations will be identifiable by signs.

Please be reminded that domestic pets are not permitted on NPWS Estate. Pets and working dogs may be affected (1080 is lethal to cats and dogs). Pets and working dogs must be restrained or muzzled in the vicinity and must not enter the baiting location. Penalties apply for non-compliance.

In the event of accidental poisoning seek immediate veterinary assistance.

For further information please call the local NPWS office on:

NPWS Sydney North (Middle Head) Area office: 9960 6266

NPWS Sydney North (Forestville) Area office: 9451 3479

NPWS North West Sydney (Lane Cove NP) Area office: 8448 0400

NPWS after-hours Duty officer service: 1300 056 294

Sydney Harbour Federation Trust: 8969 2128

Volunteers for Barrenjoey Lighthouse Tours needed

Details:

Johnson Brothers Mitre 10 Recycling Batteries: at Mona Vale + Avalon Beach

Over 18,600 tonnes of batteries are discarded to landfill in Australia each year, even though 95% of a battery can be recycled!

That’s why we are rolling out battery recycling units across our stores! Our battery recycling units accept household, button cell, laptop, and power tool batteries as well as mobile phones! 

How To Dispose Of Your Batteries Safely: 

  1. Collect Your Used Batteries: Gather all used batteries from your home. Our battery recycling units accept batteries from a wide range of products such as household, button cell, laptop, and power tool batteries.
  2. Tape Your Terminals: Tape the terminals of used batteries with clear sticky tape.
  3. Drop Them Off: Come and visit your nearest participating store to recycle your batteries for free (at Johnson Brothers Mitre 10 Mona Vale and Avalon Beach).
  4. Feel Good About Your Impact: By recycling your batteries, you're helping support a healthier planet by keeping hazardous material out of landfills and conserving resources.

Environmental Benefits

  • Reduces hazardous waste in landfill
  • Conserves natural resources by promoting the use of recycled materials
  • Keep toxic materials out of waterways 

Reporting Dogs Offleash - Dog Attacks to Council

If the attack happened outside local council hours, you may call your local police station. Police officers are also authorised officers under the Companion Animals Act 1998. Authorised officers have a wide range of powers to deal with owners of attacking dogs, including seizing dogs that have attacked.

You can report dog attacks, along with dogs offleash where they should not be, to the NBC anonymously and via your own name, to get a response, at: https://help.northernbeaches.nsw.gov.au/s/submit-request?topic=Pets_Animals

If the matter is urgent or dangerous call Council on 1300 434 434 (24 hours a day, 7 days a week).

If you find injured wildlife please contact:
  • Sydney Wildlife Rescue (24/7): 9413 4300 
  • WIRES: 1300 094 737

Plastic Bread Ties For Wheelchairs

The Berry Collective at 1691 Pittwater Rd, Mona Vale collects them for Oz Bread Tags for Wheelchairs, who recycle the plastic.

Berry Collective is the practice on the left side of the road as you head north, a few blocks before Mona Vale shops . They have parking. Enter the foyer and there's a small bin on a table where you drop your bread ties - very easy.

A full list of Aussie bread tags for wheelchairs is available at: HERE 


Stay Safe From Mosquitoes 

NSW Health is reminding people to protect themselves from mosquitoes when they are out and about.

NSW Health states Mosquitoes in NSW can carry viruses such as Japanese encephalitis (JE), Murray Valley encephalitis (MVE), Kunjin, Ross River and Barmah Forest. The viruses may cause serious diseases with symptoms ranging from tiredness, rash, headache and sore and swollen joints to rare but severe symptoms of seizures and loss of consciousness.

A free vaccine to protect against JE infection is available to those at highest risk in NSW and people can check their eligibility at NSW Health.

People are encouraged to take actions to prevent mosquito bites and reduce the risk of acquiring a mosquito-borne virus by:
  • Applying repellent to exposed skin. Use repellents that contain DEET, picaridin, or oil of lemon eucalyptus. Check the label for reapplication times.
  • Re-applying repellent regularly, particularly after swimming. Be sure to apply sunscreen first and then apply repellent.
  • Wearing light, loose-fitting long-sleeve shirts, long pants and covered footwear and socks.
  • Avoiding going outdoors during peak mosquito times, especially at dawn and dusk.
  • Using insecticide sprays, vapour dispensing units and mosquito coils to repel mosquitoes (mosquito coils should only be used outdoors in well-ventilated areas)
  • Covering windows and doors with insect screens and checking there are no gaps.
  • Removing items that may collect water such as old tyres and empty pots from around your home to reduce the places where mosquitoes can breed.
  • Using repellents that are safe for children. Most skin repellents are safe for use on children aged three months and older. Always check the label for instructions. Protecting infants aged less than three months by using an infant carrier draped with mosquito netting, secured along the edges.
  • While camping, use a tent that has fly screens to prevent mosquitoes entering or sleep under a mosquito net.
Remember, Spray Up – Cover Up – Screen Up to protect from mosquito bite. For more information go to NSW Health.

Mountain Bike Incidents On Public Land: Survey

This survey aims to document mountain bike related incidents on public land, available at: https://www.surveymonkey.com/r/K88PSNP

Sent in by Pittwater resident Academic for future report- study. 

Report fox sightings

Fox sightings, signs of fox activity, den locations and attacks on native or domestic animals can be reported into FoxScan. FoxScan is a free resource for residents, community groups, local Councils, and other land managers to record and report fox sightings and control activities. 

Our Council's Invasive species Team receives an alert when an entry is made into FoxScan.  The information in FoxScan will assist with planning fox control activities and to notify the community when and where foxes are active.



marine wildlife rescue group on the Central Coast

A new wildlife group was launched on the Central Coast on Saturday, December 10, 2022.

Marine Wildlife Rescue Central Coast (MWRCC) had its official launch at The Entrance Boat Shed at 10am.

The group comprises current and former members of ASTR, ORRCA, Sea Shepherd, Greenpeace, WIRES and Wildlife ARC, as well as vets, academics, and people from all walks of life.

Well known marine wildlife advocate and activist Cathy Gilmore is spearheading the organisation.

“We believe that it is time the Central Coast looked after its own marine wildlife, and not be under the control or directed by groups that aren’t based locally,” Gilmore said.

“We have the local knowledge and are set up to respond and help injured animals more quickly.

“This also means that donations and money fundraised will go directly into helping our local marine creatures, and not get tied up elsewhere in the state.”

The organisation plans to have rehabilitation facilities and rescue kits placed in strategic locations around the region.

MWRCC will also be in touch with Indigenous groups to learn the traditional importance of the local marine environment and its inhabitants.

“We want to work with these groups and share knowledge between us,” Gilmore said.

“This is an opportunity to help save and protect our local marine wildlife, so if you have passion and commitment, then you are more than welcome to join us.”

Marine Wildlife Rescue Central Coast has a Facebook page where you may contact members. Visit: https://www.facebook.com/profile.php?id=100076317431064


Watch out - shorebirds about

Pittwater is home to many resident and annually visiting birds. If you watch your step you won't harm any beach-nesting and estuary-nesting birds have started setting up home on our shores.

Did you know that Careel Bay and other spots throughout our area are part of the East Asian-Australasian Flyway Partnership (EAAFP)?

This flyway, and all of the stopping points along its way, are vital to ensure the survival of these Spring and Summer visitors. This is where they rest and feed on their journeys.  For example, did you know that the bar-tailed godwit flies for 239 hours for 8,108 miles from Alaska to Australia?

Not only that, Shorebirds such as endangered oystercatchers and little terns lay their eggs in shallow scraped-out nests in the sand, NSW National Parks and Wildlife Service (NPWS) Threatened Species officer Ms Katherine Howard has said.
Even our regular residents such as seagulls are currently nesting to bear young.

What can you do to help them?
Known nest sites may be indicated by fencing or signs. The whole community can help protect shorebirds by keeping out of nesting areas marked by signs or fences and only taking your dog to designated dog offleash area. 

Just remember WE are visitors to these areas. These birds LIVE there. This is their home.

Four simple steps to help keep beach-nesting birds safe:
1. Look out for bird nesting signs or fenced-off nesting areas on the beach, stay well clear of these areas and give the parent birds plenty of space.
2. Walk your dogs in designated dog-friendly areas only and always keep them on a leash over summer.
3. Stay out of nesting areas and follow all local rules.
4. Chicks are mobile and don't necessarily stay within fenced nesting areas. When you're near a nesting area, stick to the wet sand to avoid accidentally stepping on a chick.


Possums In Your Roof?: do the right thing

Possums in your roof? Please do the right thing 
On the weekend, one of our volunteers noticed a driver pull up, get out of their vehicle, open the boot, remove a trap and attempt to dump a possum on a bush track. Fortunately, our member intervened and saved the beautiful female brushtail and the baby in her pouch from certain death. 

It is illegal to relocate a trapped possum more than 150 metres from the point of capture and substantial penalties apply.  Urbanised possums are highly territorial and do not fare well in unfamiliar bushland. In fact, they may starve to death or be taken by predators.

While Sydney Wildlife Rescue does not provide a service to remove possums from your roof, we do offer this advice:

✅ Call us on (02) 9413 4300 and we will refer you to a reliable and trusted licenced contractor in the Sydney metropolitan area. For a small fee they will remove the possum, seal the entry to your roof and provide a suitable home for the possum - a box for a brushtail or drey for a ringtail.
✅ Do-it-yourself by following this advice from the Department of Planning and Environment: 

❌ Do not under any circumstances relocate a possum more than 150 metres from the capture site.
Thank you for caring and doing the right thing.



Sydney Wildlife photos

Aviaries + Possum Release Sites Needed

Pittwater Online News has interviewed Lynette Millett OAM (WIRES Northern Beaches Branch) needs more bird cages of all sizes for keeping the current huge amount of baby wildlife in care safe or 'homed' while they are healed/allowed to grow bigger to the point where they may be released back into their own home. 

If you have an aviary or large bird cage you are getting rid of or don't need anymore, please email via the link provided above. There is also a pressing need for release sites for brushtail possums - a species that is very territorial and where release into a site already lived in by one possum can result in serious problems and injury. 

If you have a decent backyard and can help out, Lyn and husband Dave can supply you with a simple drey for a nest and food for their first weeks of adjustment.

Mona Vale Dunes bushcare group: 2026 Dates

What’s Happening? Mona Vale Dunes Bushcare group catch-up. 

In 2026 our usual work mornings will be the second Saturday and third Thursday of each month. You can come to either or both. 

We are maintaining an area south of Golf Avenue. This was cleared of dense lantana, green cestrum and ground Asparagus in 2019-2020. 600 tubestock were planted in June 2021, and natural regeneration is ongoing. 

Photos: The site In November 2019, chainsaws at the ready. In July 2025, look at the difference - coastal dune vegetation instead of dense weeds. But maintenance continues and bushcarers are on the job. Can you join us?

(access to this southern of MV Dunes  - parking near Mona Vale Headland reserve, or walk from Golf Ave.) 

For comparison, see this image of MV dunes in 1969!, taken from atop the home units at the end of Golf Avenue. 

2026 Dates

Bangalley Headland WPA Bushcare 2026

Watch out for PNHA signs telling you about bush regeneration and our local environment. This is one of many coming up.

Bushcare in Pittwater: where + when

For further information or to confirm the meeting details for below groups, please contact Council's Bushcare Officer on 9970 1367 or visit Council's bushcare webpage to find out how you can get involved.

BUSHCARE SCHEDULES 
Where we work                      Which day                              What time 

Avalon     
Angophora Reserve             3rd Sunday                         8:30 - 11:30am 
Avalon Dunes                        1st Sunday                         8:30 - 11:30am 
Avalon Golf Course              2nd Wednesday                 3 - 5:30pm 
Careel Creek                         4th Saturday                      8:30 - 11:30am 
Toongari Reserve                 3rd Saturday                      9 - 12noon (8 - 11am in summer) 
Bangalley Headland            2nd Sunday                         9 to 12noon 
Catalpa Reserve              4th Sunday of the month        8.30 – 11.30
Palmgrove Park              1st Saturday of the month        9.00 – 12 

Bayview     
Winnererremy Bay                 4th Sunday                        9 to 12noon 

Bilgola     
North Bilgola Beach              3rd Monday                        9 - 12noon 
Algona Reserve                     1st Saturday                       9 - 12noon 
Plateau Park                          1st Friday                            8:30 - 11:30am 

Church Point     
Browns Bay Reserve             1st Tuesday                        9 - 12noon 
McCarrs Creek Reserve       Contact Bushcare Officer     To be confirmed 

Clareville     
Old Wharf Reserve                 3rd Saturday                      8 - 11am 

Elanora     
Kundibah Reserve                   4th Sunday                       8:30 - 11:30am 

Mona Vale     
Mona Vale Beach Basin          1st Saturday                    8 - 11am 
Mona Vale Dunes                     2nd Saturday +3rd Thursday     8:30 - 11:30am 

Newport     
Bungan Beach                          4th Sunday                      9 - 12noon 
Crescent Reserve                    3rd Sunday                      9 - 12noon 
North Newport Beach              4th Saturday                    8:30 - 11:30am 
Porter Reserve                          2nd Saturday                  8 - 11am 

North Narrabeen     
Irrawong Reserve                     2nd Saturday                   2 - 5pm 

Palm Beach     
North Palm Beach Dunes      3rd Saturday                    9 - 12noon 

Scotland Island     
Catherine Park                          2nd Sunday                     10 - 12:30pm 
Elizabeth Park                           1st Saturday                      9 - 12noon 
Pathilda Reserve                      3rd Saturday                      9 - 12noon 

Warriewood     
Warriewood Wetlands             1st Sunday                         8:30 - 11:30am 

Whale Beach     
Norma Park                               1st Friday                            9 - 12noon 

Western Foreshores     
Coopers Point, Elvina Bay      2nd Sunday                        10 - 1pm 
Rocky Point, Elvina Bay           1st Monday                          9 - 12noon

Friends Of Narrabeen Lagoon Catchment Activities

Bush Regeneration - Narrabeen Lagoon Catchment  
This is a wonderful way to become connected to nature and contribute to the health of the environment.  Over the weeks and months you can see positive changes as you give native species a better chance to thrive.  Wildlife appreciate the improvement in their habitat.

Belrose area - Thursday mornings 
Belrose area - Weekend mornings by arrangement
Contact: Phone or text Conny Harris on 0432 643 295

Wheeler Creek - Wednesday mornings 9-11am
Contact: Phone or text Judith Bennett on 0402 974 105
Or email: Friends of Narrabeen Lagoon Catchment : email@narrabeenlagoon.org.au

Gardens and Environment Groups and Organisations in Pittwater


Ringtail Posses 2023

September’s ozone hole was the biggest in 20 years. The warning signs appeared months ago

Hannah E. Kessenich, University of Otago; Annika Seppälä, University of Otago, and Dan Smale, Earth Sciences New Zealand

The area covered by the Antarctic ozone hole peaked at more than 27 million square kilometres in September, the second-largest ever observed for this time of year.

We first predicted a severe ozone hole in May this year, when we observed changes in atmospheric circulation. A very strong polar vortex and cold temperatures over the pole are driving the early and large growth of the ozone hole.

But rest assured, the Montreal Protocol – a landmark global treaty designed to protect the ozone layer by phasing out ozone-depleting substances – is still working.

The levels of ozone-depleting substances in the stratosphere have dropped by about a third since their peak around the year 2000.

Despite its larger area, the 2026 ozone hole hasn’t reached the depths of other large ozone holes from the past, meaning there is less “missing” ozone overall.

This year’s ozone hole area started growing earlier than average in August, accompanied by low temperatures in the stratosphere.

The hole then rapidly grew from the start of September. At 27.4 million square kilometres, this record area has only been broken twice: in 2000 the ozone hole briefly reached more than 28 million square kilometres and in 2015, it peaked during October at 27.9 million square kilometres.

How the Antarctic ozone hole works

The ozone hole forms in early spring inside the stratospheric polar vortex, a strong wind pattern that forms every winter and encircles Antarctica and the Southern Ocean.

The ozone hole on 20 September 2026.
The ozone hle forms each spring. NASA Ozone Watch, CC BY-SA

The very low temperatures inside the vortex lead to the formation of polar stratospheric clouds. Chemical reactions on particles in this rare type of cloud then activate ozone-depleting gases.

Once formed, the ozone hole’s longevity depends on how well isolated the air is within the polar vortex. A cold and robust vortex leads to a long-lasting ozone hole. Hence, large-scale atmospheric dynamics play a key role.

Since the signing of the Montreal Protocol in 1987, concentrations of ozone-depleting gases have reduced.

However, sometimes the dynamics of the polar vortex can be “primed” leading into spring. Over several months prior, patterns of airflow can change and lead to a stronger and colder vortex.

If this happens, the ozone hole may grow larger and deeper, and last longer, even if chemical healing is underway.

Early predictions and the outlook for 2026

Improving the predictability of severe ozone hole events remains an ongoing scientific challenge.

By May 2026, changes in atmospheric composition observed from satellites were the first sign that atmospheric dynamics were priming the polar vortex. We predicted a “major” ozone hole for September 2026.

A map of the 2026 Antarctic ozone hole.
The area of the 2026 ozone hole peaked at more than 27 million square kilometres. CAMS/ECMWF, CC BY-SA

So far, September observations are matching early predictions. But what will happen next?

Unless the dynamical conditions above the pole shift, our prediction is that we are set for a prolonged season, with a major hole continuing through October and November. Recent work from our team will allow us to quantify just how much atmospheric dynamics exacerbated this year’s ozone hole.

We can expect 2026 to have an overall ranking within the top ten most severe ozone holes of all time.

A severe ozone hole in 2026 isn’t entirely unexpected. Since 2020, we have experienced a run of other large and long-lasting Antarctic ozone holes during the years from 2020 to 2023.

Smoke from the Australian wildfires in 2019-20 and aerosols from the 2021 La Soufrière eruption in the Caribbean have been linked to worsened ozone depletion in those years.

The eruption of the Hunga Tonga–Hunga Haʻapai submarine volcano in 2022 led to an early start to the 2023 ozone hole season. All things considered, the 2020s have been a unique decade for ozone recovery.

What this means for weather

The ozone hole affects weather and climate across the Southern Hemisphere.

Following a severe ozone hole, a climate pattern called the Southern Annular Mode (SAM) shifts towards its positive phase, which brings calmer winds and warmer, wetter weather to Aotearoa New Zealand, particularly on the west coast. For Australia, this means increased rainfall along the southeast coast.

The opposite phase can lead to more extreme wind events, such as the series of destructive storms that lashed parts of New Zealand during October last year.

In the long term, the Antarctic ozone hole is projected to reach full recovery before 2090.

But in recent years, the ozone hole has routinely persisted late into spring. Changes in global atmospheric dynamics could be making longer-lived ozone holes more likely, and the projected timeline of ozone recovery could be missing critical aspects of this behaviour.

For Aotearoa New Zealand, this means the ozone hole will continue to affect winds and temperatures on our shores for several more decades.The Conversation

Hannah E. Kessenich, Postdoctoral Fellow in Physics, University of Otago; Annika Seppälä, Associate Professor in Atmospheric Physics, University of Otago, and Dan Smale, Principal Technician Atmosphere, Earth Sciences New Zealand

This article is republished from The Conversation under a Creative Commons license. Read the original article.

Earth’s tides are shaped by more than the Moon. And they’re changing as the planet warms

An aerial view of fast-flowing water between a narrow channel.
The Horizontal Falls are an unusual natural phenomenon on the coast of Western Australia’s Kimberley region, where tidal flows cause waterfalls on the ebb and flow of each tide. James D. Morgan/Getty Images
Luwei Yang, Australian National University and Callum Shakespeare, Australian National University

In some parts of the world, the sea barely rises and falls with the tides. In others, the difference between high and low tide is dramatic. Along Western Australia’s Kimberley coast, for example, it can exceed ten metres – roughly the height of a three-storey building.

Ocean tides shape coastlines and marine ecosystems, affect coastal communities, and even influence the melting of Antarctic ice shelves. But why are tides so large in some places and so small in others? And as our oceans change, will the tides change too?

The pull of the Moon and Sun

The Moon and the Sun both produce tides on Earth through their gravitational pull. Although the Sun is far more massive, the Moon is much closer, so it has a stronger influence on our ocean tides.

The Moon’s gravitational pull decreases with distance. It is strongest on the side of Earth that’s closest to the Moon, and weakest on the far side. This difference stretches both the solid Earth and oceans. But because water moves more freely than rock, the effect is most visible in the ocean.

Ocean tides are the regular rise and fall of sea level driven by the gravitational pull of the Moon and the Sun. This video shows tidal elevation amplitude simulated by a global tide model around Australia (green equals higher than mean sea level while blue equals lower than mean sea level)

In a simplified picture, this creates two broad tidal bulges. One forms on the side facing the Moon. A second forms on the far side because the Moon pulls Earth’s centre more strongly than it pulls the more distant water.

As Earth rotates, different locations move into and out of these regions of higher sea level. This helps explain why many places experience two high tides and two low tides each day.

The Sun produces a similar but weaker effect. When the Sun, Moon and Earth line up, their effects reinforce one another, producing larger tidal ranges than usual – known as a spring tide. When the Sun and Moon form a right angle as viewed from Earth, their effects partly offset one another, producing smaller tidal ranges or a neap tide.

A diagram illustrating spring tides and neap tides.
The size of Earth’s tides change depending on the position of the Moon and the Sun. ttsz/Getty Images

More than gravity

Tides measured by coastal gauges and satellites look very different from this two-bulge picture. Continents interrupt the oceans, so seawater instead moves back and forth within ocean basins.

In many ocean basins, tides rotate around points where the tidal rise and fall is almost zero, known as amphidromic points. Tidal ranges generally become larger farther away from these points.

Coastal geometry can amplify tides further through a process called resonance. Each bay has a natural rhythm at which its water sloshes back and forth, determined by its shape and depth. When this rhythm matches that of the local tides, each movement reinforces the next.

Resonance contributes to the exceptionally large tides of the Kimberley coast and Canada’s Bay of Fundy, where the tidal range can reach 16 metres.

Underwater mountains and ridges also affect tides.

When tides flow over rough seafloor, some of their energy is converted into waves within the ocean, known as internal tides. The complex seafloor of the Indonesian archipelago, for example, generates powerful internal tides. When internal tides break, they can drive ocean mixing, helping distribute heat and nutrients.

Some internal tides break near where they form, while others travel thousands of kilometres. As they travel, they exert forces on surface tides. Depending on their timing, these forces can behave like a brake or a spring – either removing energy from the tide like a brake, or taking energy in one part of the cycle and giving it back later like a spring. Most tide models overlook this springlike effect.

Our recent study showed that including this effect allows models to reproduce observed tides accurately without directly simulating internal tides, which can take a lot of costly computer power.

This improvement could make models more efficient and reliable for reconstructing past tides – offering clues to how Earth’s rotation and the Moon’s orbit have evolved – and predicting future tides.

Tides in a changing ocean

Isaac Newton explained tides using gravity in 1687. More than three centuries later, scientists are still uncovering how tides evolve with our changing oceans.

Climate change is raising sea levels and altering coastlines. It is also warming the upper ocean and making the ocean more stratified. These changes can affect the size of tides.

Measurements already suggest that tides are changing.

Changes in ocean stratification may help explain some of these changes. Meanwhile, improved ocean models are capturing internal tides in greater detail, and new satellites can measure tides in complex coastal regions that were previously difficult to observe from space.

For coastal communities, understanding how tides are changing is increasingly important.

At Lakes Entrance, one of Victoria’s most climate-exposed coastal communities, changes in tidal range have been the main cause of increased flooding. The local council is now seeking $4 million for drainage upgrades to protect homes and businesses and support future development.

Better predictions of future tidal changes could help communities prepare for flooding, reduce flood damage, and plan future coastal development more safely.The Conversation

Luwei Yang, Postdoctoral Research Fellow in Oceanography, Australian National University and Callum Shakespeare, Associate Professor, Research School of Earth Sciences, Australian National University

This article is republished from The Conversation under a Creative Commons license. Read the original article.

Two native turtles are vying to survive in a coastal Australian river. One doesn’t belong there

A researcher in diving gear holds a captured Manning River Helmeted turtle, recognisable by its bright yellow colouring.
Alex Pike
Jessica Tout-Lyon, Charles Sturt University; Elise Furlan, University of Canberra; Louise Streeting, University of New England, and Mathew John Bell, Art Gallery NSW

The Manning River Helmeted turtle (Myuchelys purvisi) might just be Australia’s most beautiful freshwater turtle.

With a bright yellow stripe stretching from their nose to the tip of their tail, these striking turtles are hard to miss.

The Manning River turtle is found nowhere else on earth except for the few coastal rivers in New South Wales’ Manning River region. Known as Guraa in the Gathang language of the Traditional Custodians of Birpai-Barray, this ancient turtle has a lineage dating back 55 million years.

However, this ancient species faces a very modern crisis. The Manning River turtle is listed as endangered and is being pushed towards extinction by the pressures of habitat clearing, the illegal pet trade and invasive predators that prey on adult female turtles and their eggs.

But as our new study reveals, this species faces an even more urgent, and perhaps unexpected, threat: another native but locally-introduced turtle.

An unexpected threat

The Macquarie River turtle (Emydura macquarii), also known as the Murray River turtle, is native to several river systems snaking across Australia. It is also listed as critically endangered in Victoria and vulnerable in South Australia.

However, this species is spreading beyond its natural range. Macquarie River turtles were first found in NSW’s Manning River catchment in 2007, and were possibly introduced by people releasing their pet turtles into the river. These turtles have now been detected across nine different tributaries in the Manning River and are continuing to spread.

Macquarie River turtles are a threat to populations of the critically endangered Bellinger River turtle (Myuchelys georgesi) and the endangered Manning River turtle. These two species are only found in two coastal river systems in eastern Australia. Macquarie River turtles compete with these native species for resources such as food. They can also harbour disease such as the Bellinger River virus.

Hybridisation is perhaps the most pressing threat. Hybridisation occurs when different species breed and produce hybrid offspring. Research suggests it is not a new phenomenon among Australia’s freshwater turtles. However, hybridisation can lead to the loss of distinct species, when hybrid animals rapidly reproduce and eventually replace the endangered population.

Current evidence suggests hybridisation is already occurring in the Bellinger and Kalang Rivers, where the Macquarie River turtle was introduced in the 1990s.

A large turtle walks on a stretch of rocky land.
The native Macquarie River turtle (Emydura macquarii) is now found in the Manning, Bellinger and Kalang Rivers. Ricky Spencer/1 Million Turtles

All in a drop of water

Thankfully, Macquarie River turtles have not yet expanded across the entire Manning River. So tracking their spread is vital to protecting other native turtles.

Currently, turtle ecologists can detect turtles by snorkelling or trapping. They can also observe their behaviour through underwater video surveys. However, these methods can be time consuming and costly, and in some cases mean turtles are handled by humans.

Our new study investigated how else we could monitor the presence of Macquarie River turtles, particularly as they encroach on the Manning River turtle’s habitat.

Specifically, we developed highly sensitive and species-specific environmental DNA tests. When turtles swim through rivers they leave behind traces of their DNA – known as eDNA – that scientists can detect using eDNA tests.

We designed these turtle tests in the lab. We then compared the DNA sequences of our target turtle species with other turtle species that are closely related or live in the same habitat. This ensured our tests were specific to the Manning River and Macquarie River turtles. This matters because river water can contain the DNA of hundreds or even thousands of different species.

We then took water samples from five locations across the Manning River catchment over a period of three days. We did this to see if the eDNA tests could detect the DNA turtles shed into river water. Using a portable eDNA backpack – which filters water from the river to capture DNA – we were able to sample litres of water in minutes while preserving the DNA we collected.

Meanwhile, turtle ecologists from the Redleaf Group, an Australian environmental company, took to the river with mask and snorkel. They physically captured turtles present in the river and recorded important population data.

Results from the snorkelling surveys and our eDNA tests were consistent. Both methods detected Manning River turtles at all five locations but no introduced Macquarie River turtles. However, more research is needed before we can conclusively say Macquarie River turtles were not present at these sites.

How this research could help

We hope these eDNA tests will help researchers accurately track the spread of turtle species outside their natural ranges.

eDNA tests are valuable because of their versatility. They can be used to pinpoint areas where a target species is present, allowing ecologists to then gather population data using traditional survey methods like trapping and snorkeling. They can also be used to identify broader trends about the distribution of a target species.

A researcher with a backpack samples collects water samples in a river.
Dr Jessica Tout-Lyon with an eDNA backpack, sampling river water in the Manning River catchment. Aunty Yvonne Harvey

eDNA surveys can act as a powerful citizen science tool. Their straightforward application allows members of the community to collect water samples and contribute to local conservation efforts. These surveys can complement other citizen science projects such as 1 Million Turtles and TurtleSAT, which allow the public to record turtle sightings.

Australians are accustomed to the threats of introduced species from overseas. But as the Macquarie River turtle shows, native species in the wrong locations can also put additional pressure on our already endangered species.The Conversation

Jessica Tout-Lyon, Lecturer and Researcher, Marine, Molecular and Microbial Ecology, Charles Sturt University; Elise Furlan, Researcher, Molecular Ecology, University of Canberra; Louise Streeting, Postdoctoral Fellow, School of Environmental and Rural Science, University of New England, and Mathew John Bell, Senior Ecologist, Art Gallery NSW

This article is republished from The Conversation under a Creative Commons license. Read the original article.

The dingo debate is heating up. How we manage these animals will determine their future

A dingo stands on a patch of sandy land on a windy day.
WatsonUK/Getty
Niraj Meisuria, University of Sydney; Rhys Cairncross, University of Sydney, and Thomas Newsome, University of Sydney

What should we do about dingoes?

How we manage dingoes is a source of heated debate. Dingoes play an integral ecological role as a top predator, and have immense cultural significance to First Nations communities. However, many farmers view dingoes as a threat to their livestock, livelihoods and mental health.

The New South Wales government is grappling with this tension, as a parliamentary inquiry considers how to manage dingo populations in the state’s national parks.

In NSW, dingoes are not protected under state law but are legally managed under the category of “wild dogs”, a term that includes dingoes.

The inquiry is currently examining the genetic status, ecological role and cultural significance of dingoes. The inquiry received nearly 400 public submissions.

The dingo debate

The NSW government relies on several core values to guide how it manages the state’s national parks. These include protecting biodiversity, keeping ecosystems intact and upholding the values of local First Nations communities. These principles must be balanced with the need for research and sustainable tourism.

When it comes to dingoes, the crucial question is whether dingo control within national parks conflicts with these considerations.

There is a mounting push to strengthen protection for dingoes across the country, and particularly in national parks. The ecological argument emphasises their role as a top predator that keeps numbers of kangaroos, foxes and other invasive species under control. From a cultural perspective, archaeological evidence chronicles the long-standing relationships between dingoes and Indigenous Australians. Today, dingoes remain a culturally significant native animal among First Nations communities.

However, the argument for controlling dingoes revolves around the damage they can inflict on livestock and rural communities. In areas where dingo habitat overlaps with farms, particularly those with sheep and goats, dingoes have been known to attack, maim, and kill livestock. This can cost farmers thousands of dollars in lost income. Harder to quantify is the psychological toll of losing animals and worrying about future dingo attacks.

Noticing the nuance

The debate about dingoes is often framed as a battle between farmers on the one hand, and conservationists and dingoes on the other. But this is misleading.

The conventional way of managing dingoes involves indiscriminate killing. This is typically done through large scale baiting programs targeting areas where dingoes are known to kill livestock.

However, there is little evidence to suggest this approach actually protects livestock. In one study, for example, baiting across four cattle stations reduced the relative abundance of dingoes but did not reduce how many calves were lost.

And while baiting can curb dingo numbers, these effects can be short lived. Reducing dingo numbers doesn’t necessarily protect livestock from unexpected attacks.

Where to from here

The dingo inquiry could pave the way for a more nuanced approach to dingo management that limits livestock deaths while valuing the ecological role and cultural value of dingoes.

Several non-lethal control methods – including exclusion fencing, guardian animals and targeted responses to individual problem animals – could be effective in managing dingo numbers on lands that neighbour national parks.

But introducing these methods on a large scale comes with major hurdles, such as the high costs of fencing and training guardian animals. Major policy changes are required to recognise dingoes as a native species, protect them within national parks and fund the research needed to understand how people and dingoes can co-exist.

By introducing non-lethal control strategies in or near to national parks, NSW would align with other jurisdictions across the globe that are successfully managing the tension between apex predators and livestock. It would also make NSW a leader in Australian dingo management.

With public hearings concluded, the NSW dingo inquiry is now considering what an alternative approach could look like. The question is no longer whether dingoes should be controlled, but how we can better live alongside them.The Conversation

A white Maremma sheepdogs stands among a flock of sheep.
Guardian animals, such as Maremma sheepdogs, can help reduce livestock losses. ChristiLaLiberte/Getty

Niraj Meisuria, PhD Candidate, Disease Ecology Lab and Global Ecology Lab, University of Sydney; Rhys Cairncross, PhD Candidate, Global Ecology Lab, University of Sydney, and Thomas Newsome, Associate Professor, Global Ecology, University of Sydney

This article is republished from The Conversation under a Creative Commons license. Read the original article.

The space race should not endanger Australian wildlife

Kirsten Parris, The University of Melbourne and Hugh Possingham, The University of Queensland

The race to space continues, with the number of rockets launched increasing every year.

Most of these send satellites into orbit. A smaller number are for defence operations, space exploration and space tourism.

Australia has two existing rocket-launch facilities: the Bowen Orbital Spaceport in North Queensland and the Koonibba Test Range in South Australia.

Australian aerospace company Southern Launch, the operator of the Koonibba Test Range, has proposed a new coastal rocket-launch facility for Whalers Way on SA’s Eyre Peninsula. Over in Western Australia, the state government has thrown its support behind plans to build a spaceport across multiple sites.

Space facilities are often built in areas rich in wildlife, including many species already under threat from habitat destruction, climate change and H5N1 bird flu.

That raises the question: how can we explore space without harming ecosystems on Earth?

When rockets and nature collide

Rocket-launch facilities are typically built in coastal or desert areas away from human populations. This is to protect people from excess noise, falling debris and uncontrolled explosions from failed launches.

Given Australia’s coastal areas are home to a spectacular array of plants and animals, this creates a potential conflict between rocket launches and nearby nature. The proposed Whalers Way facility, for instance, would be built in a nature reserve that is home to more than 700 native species, including two endangered birds and the endangered Australian sea lion.

This conflict is not unique to Australia. A recent international study found more than 60% of the world’s rocket-launch facilities are located in or close to nature reserves, threatening global conservation efforts.

Building and operating coastal rocket-launch facilities can harm wildlife in various ways, including by:

Indirect environmental consequences may include:

  • using huge amounts of fuel, such as refined petroleum or liquid methane, which contributes to global warming and ozone reduction

  • releasing debris known as space junk into orbit, which creates a safety risk to people and space infrastructure.

Who decides where rocket launchers go?

In Australia, the Australian Space Agency regulates civil space activities under the Space (Launches and Returns) Act 2018.

A company seeking to operate a rocket-launch facility must apply for a licence, as well as permits for each launch or series of launches. Prospective operators must also receive approval under relevant federal and state environmental law.

As with other types of development, environmental groups and local residents can comment on proposals for new space facilities. The proposed Whalers Way facility would be located in a Heritage Agreement reserve, a place protected for nature in perpetuity under SA law. This has sparked widespread community opposition. Further, a ruling from the Native Vegetation Council has called the future of the project into question.

This represents a win for local residents and wildlife. However, the ruling could still be overturned by the SA government.

Where to from here?

Never before have humans built so many commercial launch facilities and sent so many rockets into space.

As this technology rapidly advances, so must our research.

Given modern rockets are much louder than cars or aeroplanes, existing information on how vehicle noise affects wildlife is not particularly relevant to rocket launches.

We urgently need new research to measure the noise and blast waves experienced by animals close to rocket launches. Studies should examine how these sounds – including those at frequencies humans can’t hear – affect the behaviour, survival and reproductive success of local species.

Research should also investigate the long-term impacts on wildlife, such as whether regular rocket launches lead to declining populations or even local extinction.

Crucially, governments must assess which sites are most suitable for new launch facilities. Whalers Way, as pointed out by local residents and conservationists, does not fall into this category. But other places, such as Koonibba or cleared coastal sites west of Ceduna, could allow Australia to grow its space ambitions while protecting precious wildlife.The Conversation

Kirsten Parris, Professor, Urban Ecology, The University of Melbourne and Hugh Possingham, Professor, Conservation Biology, The University of Queensland

This article is republished from The Conversation under a Creative Commons license. Read the original article.

Sharks often swim across national borders. Our conservation efforts must travel with them

A school of fish follow a large whale shark that's swimming in the ocean.
Jason Edwards/Getty
Diego Bezerra, The University of Queensland; Daniel Dunn, The University of Queensland, and Ross Dwyer, University of the Sunshine Coast

Almost 11,000 kilometres. That’s how far one white shark swam while travelling from South Africa to Western Australia, before turning around and returning home.

In the waters off southern Australia, school sharks can cover up to 3,000 kilometres while crossing the Tasman Sea to New Zealand.

Many shark and ray species embark on mammoth migrations. But to protect these species, we need to know not only how far an animal moves, but whether it crosses national borders.

Our new study analysed 30 years of shark and ray movement studies. We uncovered major gaps in our understanding of where these species go during their migrations.

Many reasons to move

Sharks and rays move for many reasons. These species may travel to find food or give birth to young. They may also migrate to waters where the temperature or salinity levels suit them better.

Body size and maturity also affect how far animals travel – older, larger animals generally travel further. Depth, ocean currents and access to suitable habitat can shape the paths taken by sharks and rays.

These factors influence each species differently. Some species are confined to particular estuaries, while others can cross entire ocean basins.

Whale sharks, for instance, gather seasonally at Ningaloo Reef in WA where they attract tourists and researchers from across the country. But they do not stay at Ningaloo. Tracking studies show some of these sharks travel thousands of kilometres beyond Australian waters, including into Indonesia.

In Australian waters, whale sharks are protected and tourism is strictly regulated under both state and federal law.

However, national protections cannot address pressures animals may encounter after leaving Australian waters, such as accidental capture and vessel strikes, where cargo vessels or other boats collide with whale sharks.

A map showing the movements of a whale shark.
Whale sharks can travel incredible distances while migrating. Diego Bezerra et al.

What we studied

Our new study analysed three decades of studies that used various methods to understand shark and ray movements. These included satellite and acoustic tracking as well as catching, marking and recapturing individual animals.

We identified 29 shark and ray species that are known to migrate across international borders. But only five species – namely white sharks, whale sharks, shortfin makos, blue sharks and school sharks – had studies showing movements between Australian waters and those of other countries. These included Papua New Guinea, Indonesia, New Zealand, Micronesia, New Caledonia and South Africa.

Worryingly, we found 18 species had no published information about their movements. This lack of research means we simply don’t know if these species travel long distances or cross boundaries. What’s more, nearly two thirds of the threatened species we examined had no published studies about their movement patterns.

A great white shark glides through the ocean.
A great white shark glides through the ocean. Rosie Leaney/Getty

Conservation across borders

A United Nations treaty, the Convention on the Conservation of Migratory Species of Wild Animals, gives countries guidance on collectively conserving sharks and rays that migrate across borders.

To fulfil its commitments under the Convention, Australia should focus on three key areas.

Shared expertise

We must strengthen our conservation ties with our closest neighbours including Indonesia, Timor-Leste and Papua New Guinea to the north, and the wider Pacific to the east.

Tracking animals over long periods can be costly and difficult to maintain, particularly in remote areas. Given Australia already has a relatively well funded marine science sector, we should share our tracking technology and expertise with neighbouring countries.

A scenic view of Lord Howe Island, with lush green vegetation surrounded by deep blue ocean.
Lord Howe Island is located in the Tasman Sea. Manfred Gottschalk/Getty

Targeted research

Conducting more research into shark and ray movements is key to identifying where cooperation may be most effective and what it would look like in practice. Researchers must prioritise the 18 species whose movements we know little about.

In particular, Australia and New Zealand should support coordinated research around the Lord Howe Rise in the Tasman Sea. Authorities are currently considering whether to establish this region as a protected area, under the new High Seas Biodiversity Treaty.

Australia must also rethink how it classifies shark and ray species. For example, while the UN convention lists hammerhead sharks as migratory, Australia does not. This may be to appease commercial and recreational fishers who target or incidentally catch these sharks. Australia’s species categories should be based on science.

Strategic tracking

Instead of simply tracking more sharks, we must track them strategically. By combining movement data with oceanographic information – including about ocean currents, salinity and temperature – researchers can identify likely movement pathways linking countries and important shark and ray habitats.

This will help governments decide where to invest in additional tracking technology like acoustic receivers and satellite tags. It will also allow researchers to build a more complete picture of how sharks and rays travel.

Sharks have been moving across oceans for millions of years. It’s time our research and conservation efforts caught up with them.The Conversation

Diego Bezerra, PhD Candidate, The University of Queensland; Daniel Dunn, Associate Professor of Marine Conservation Science and Director of the Centre for Biodiversity and Conservation Science (CBCS), The University of Queensland, and Ross Dwyer, Senior Lecturer, Animal Ecology, University of the Sunshine Coast

This article is republished from The Conversation under a Creative Commons license. Read the original article.

Personal locator beacons save lives. But they can’t make hiking safe

woman hiking on larapinta trail, rocky and arid with mountains behind.
janetteasche/Getty
Samantha Murdy, Australian Catholic University

Hiking in Australia is having a moment. In the ten years to 2024, bushwalking popularity rose 81%.

Social media reels of remote, beautiful landscapes make these places feel more accessible. But there’s a risk the increased visibility of remote places can draw newer hikers to undertake overly challenging routes.

Many are getting into trouble. Rescues from Western Australia’s highest peak, Bluff Knoll, increased fourfold in a year, while Queensland’s Glasshouse Mountains have seen a surge in rescues. A similar trend in England and Wales has been linked to reliance on unsuitable navigation apps and popular social media locations.

Inevitably, this has led to tragedies. In Australia, a tourist died of hypothermia at Tasmania’s Cradle Mountain, as did two university students near Victoria’s Mount Bogong.

After the tragic death of 18-year-old hiker Lily Hooper on a remote trail in New South Wales this year, her grieving family called for the creation of “Lily’s Law” to avoid future tragedies. This would aim to improve awareness of personal locator beacons and other emergency communication and tracking technologies.

Earlier this year, the grieving family of a prospector who died in remote Western Australia called for mandatory beacon use in other remote settings.

These tragedies raise a broader question: should hikers be required to carry a personal locator beacon or other emergency communication device on remote or high-risk routes?

The answer is – probably not. While these emergency devices are great at locating missing hikers, they don’t stop people getting lost or injured – and they won’t necessarily make difficult rescues any easier. We should focus instead on encouraging rental and loan schemes to overcome cost issues – and boost hiker education.

How do beacons help?

Emergency communication devices can send distress signals via satellite. Personal locator beacons are one example.

They have clear uses. In 2024, a dehydrated hiker on the Larapinta Trail in the Northern Territory was rescued by helicopter after activating her beacon. Hikers going into areas without mobile coverage often carry a beacon or similar device somewhere accessible on their person.

Authorities say their value is in speeding up rescue. As Tasmania Police search and rescue coordinator Sergeant Bernard Peters told the ABC:

time is your biggest advantage […] if you can get an emergency signal out that someone’s in distress earlier, the faster you’re going to receive a response

The potential benefits of beacons include:

  • giving hikers a way to call for help
  • letting rescuers find hikers faster
  • reducing exposure to dangerous conditions for hiker and rescuers
  • less time and money spent searching.

Beacons have limits

Rescuing people from tough terrain will still be difficult, even if a beacon locates them quickly.

Tasmania’s Federation Peak is widely regarded as one of the most dangerous hikes in Australia. Rescuers face real risks and challenges, even if they know the location. In 2016, authorities were forced to delay rescue efforts after a hiker fell, as severe weather conditions made landing a helicopter impossible. The hiker’s location was known, but that didn’t make it easier.

Emergency communication devices are also only useful if people know how to use them, are operational and are quickly accessible. Solo hikers are at particular risk, as a fall or loss of consciousness may make it impossible to activate the beacon.

Beacons and similar devices typically cost hundreds of dollars, which may be offputting for occasional hikers. A 2021 study found many day-hikers in Tasmania did not carry essential equipment such as beacons.

Another risk is that hikers with a beacon may feel safer in the lead up to the hike, which could leave them underprepared in terms of suitable clothing, shelter and food.

POV view of hiker's feet on rocks atop mountain, looking to lake far below.
Rescues of hikers from dangerous hikes such as Tasmania’s Federation Peak will remain a challenge even with beacons. Posnov/Getty

Mandatory schemes aren’t easy

For authorities, making beacons or satellite devices mandatory would come with tricky decisions around which hikes to include and how to enforce the rules.

It would be easier to introduce mandatory beacons for popular hikes through remote areas where permits are required, such as the Larapinta Trail.

But there would still be questions over enforcement. Many hikes have no staff near the trailhead and do not require a formal check-in or safety briefing. Even if checks were possible, carrying a beacon isn’t the same as knowing how or when to use it.

Could we make beacons more accessible?

Personal locator beacons and similar devices have real merit. But they are not a silver bullet. Making them mandatory may not be the best way to improve hiker safety.

A better solution might be for authorities or bushwalking clubs to expand outdoor gear libraries, so occasional hikers can borrow and return beacons and other equipment. This could be coupled with practical hiker education on route planning, appropriate equipment, changing conditions and how to use emergency devices.

Park authorities in some states already have schemes to help hikers access personal locator beacons. In NSW, hikers can borrow beacons free in some locations, while Tasmania has a beacon hire service.

Expanding these schemes could boost access. But authorities would have to ensure they can meet demand at peak times.

Hiker education is vital

In the aftermath of tragedy, it’s natural to want to save other people from suffering a similar fate. Personal locator beacons can and do help rescuers locate hikers in distress in remote areas.

To overcome cost and administrative challenges, it could be better to make beacons more accessible through loan and hire schemes.

Beyond that, people planning to enter tough terrain need clear information about the risks of their chosen routes, the emergency equipment they should bring and how to respond to worsening weather. It’s vital to know when to turn back and when the risks are too great.

In an emergency, beacons let hikers call for help. But preventing emergencies from happening in the first place will require education.The Conversation

Samantha Murdy, Associate Professor in Marketing, Australian Catholic University

This article is republished from The Conversation under a Creative Commons license. Read the original article.

Earthshot and the science of positive tipping points: how environmental progress can become unstoppable

Steven R. Smith, University of Exeter and Tim Lenton, University of Exeter

It must be tough being a judge on the world’s most prestigious environmental prize: imagine having to choose between an ingenious machine that removes microplastics from a river in Europe, or a company in East Africa that sells clean cookstoves through affordable weekly instalments.

Over the last six months, we have been working with colleagues at Green Futures Solutions at the University of Exeter to make that job a little easier. We have found a way to distinguish between solutions that carry on working as long as people keep putting money into them, and those with “tipping potential” that get better, cheaper and easier to adopt the more successful they are. Our new report applies the science of positive tipping points to the five Earthshot categories – nature, air, oceans, waste and climate – for the first time.

After a northern summer of record-breaking heat, wildfires, floods and a deadly glacier collapse in the Nepal-Tibet border region, it would be easy to conclude the planet is only headed towards collapse. But tipping points science says otherwise. The same dynamic principle that leaves coral reefs and rainforests vulnerable to a relatively abrupt breakdown can also work in our favour – if we know the right levers to pull.

What is a positive tipping point?

Most environmental interventions assume change is incremental and proportionate: bigger problems require bigger budgets and lead to slower progress. But many complex systems we rely on (technologies, markets, societal norms, ecosystems) can shift abruptly once a critical threshold is crossed.

Solar power is a great example. Its cost fell around 90% in a decade because every panel sold stimulated innovation that made the next one cheaper. This attracted more investment, which cut costs again and improved performance. The tipping point happened when self-propelling feedback took over. Clean electricity, our report finds, is now a “master cascade”: as solar and wind have tipped in many markets, clean power can accelerate further progress in electric mobility, residential heating, industrial emissions and air quality.

Our report identifies the potential for such self-propelling feedback across 51 solution areas. Specifically, we identify whether the innovative solution is, or could quickly become, more affordable, accessible, and attractive than the polluting incumbent system it seeks to replace. We have also assigned measurable 2030 targets to each solution area, so progress can be tracked.

Three that could soon tip

Around 2.1 billion people still cook on wood, charcoal or dung and the smoke kills nearly 3 million people a year, including more than 300,000 children under five. Pay-as-you-go finance (borrowed from off-grid solar), turns an unaffordable stove into a small weekly payment. Clean cooking is now close to tipping in several African markets. People switch primarily because it saves them time and money.

Methane is responsible for about 30% of global heating so far, but lasts only around 12 years in the atmosphere. Cutting methane emissions therefore helps cool climate within a decade, rather than a century. A new generation of satellites can now pinpoint methane leaks from individual oil and gas facilities from space, and they are cheap to fix. The gas saved is worth more than the repair.

Inside a well-enforced marine-protected area, where commercial fishing is banned, fish biomass typically reaches four to seven times that of the surrounding waters within five to ten years. Fish spill out across the boundary, nearby fish catches rise, and the fishers who initially opposed the marine-protected area become the constituency demanding more of them. Only around 3% of the ocean is fully protected, but the landmark high seas treaty (itself an Earthshot prizewinner) entered into force this year and aims to protect 30% of the world’s oceans by 2030. Satellites can now monitor some industrial fishing fleets, so enforcement of marine-protected areas is getting easier. The science, the technology and the politics are coming together.

Not everything is about to tip. The biggest brake is investment: Africa receives only 3% of clean energy finance despite holding 60% of the world’s best solar resources. Our report shows where innovative financing could create the conditions to address these barriers, and highlights how the current investment gaps in adaptation financing can be closed.

By using our research to shape how the prize searches for, selects and supports solutions, Earthshot can help trigger positive tipping points to accelerate out of trouble.The Conversation

Steven R. Smith, Research Impact Fellow, Green Futures Solutions and Global Systems Institute, University of Exeter and Tim Lenton, Professor of Climate Change, University of Exeter

This article is republished from The Conversation under a Creative Commons license. Read the original article.

‘Small, flowering islands’: German city reveals how nature thrives when neighbours care for street tree beds

trees lining residential street in Freiberg Germany
DirkVG/Shutterstock
Kelly Baldwin Heid, University of Freiburg and Rita de Sousa e Silva, Leiden University

When Olivia Besters began caring for the patch of soil beneath the chestnut tree outside her home in Freiburg, Germany, more than 35 years ago, biodiversity was not on her mind.

“It was the optics,” she told me. The ground was compacted and littered with trash and dog “legacies”. Besters simply wanted the space directly outside her front door to look nicer. “Everything else came much later,” she said. “Thirty-five years ago, no one talked about climate change or insect decline.”

Over time, one tree bed expanded into 36 across Besters’ neighbourhood of Herdern. So deep is her commitment to her tree beds that her children gifted her a bike trailer to cart around her watering system, her phone is filled with stunning pictures of the flowers growing in her tree beds, and she has been nominated for city-wide engagement awards.

As towns and cities grow, biodiversity is being squeezed into ever smaller spaces while people experience a progressive loss of everyday contact with nature. Street tree beds – and the practice of caring for them – offer cities a way to counter urban biodiversity loss while enriching people’s connection with nature in their neighbourhoods.

Our research shows that citizen stewardship of street tree beds can boost species richness and diversity in urban areas.

For years, officials in Freiburg, a city known for being green and eco-conscious, had noticed residents informally planting and caring for the small patches of soil around street trees. In 2004, the city formalised this activity through its tree sponsorship programme, or Baumpatenschaftsprogramm, creating a way to organise and support something residents, like Besters, were already doing.

Biodiversity was built into the concept, but has become much more prominent over time. In 2010, the city joined forces with the Ecostation, an environmental education centre in Freiburg to launch Freiburg blüht auf (Freiburg in bloom). This initiative connected tree bed stewards directly with ecologists, providing stewards with seeds, plants and advice on turning street tree beds into small habitats for native plants and insects. The result, according to the city, are “small flowering islands” that can help the soil retain moisture and provide habitats and food for insects.

Until our research was published, however, there was little data to show what these tiny spaces were actually contributing to urban biodiversity.

In our first study, we surveyed plants growing in 200 street tree beds, comparing 100 beds actively stewarded by residents with 100 similar beds that were not stewarded. Over three months, we recorded 474 plant species growing across these beds. We found that stewarded beds supported around 1.6 times as many plant species as the non-stewarded beds. Although stewarded beds contained more non-native plants than non-stewarded beds, they also supported more native plant species and more varied plant communities.

Through surveys and interviews with more than 100 stewards in Freiburg, participants told us they were very conscious of this ecological role. Planting tree beds can “really promote biodiversity” in what might otherwise be a “concrete district”, said Shari, a 62-year-old steward who has been caring for one tree bed for six years.

Participants frequently described tending their tree beds as relaxing, restorative, absorbing and meaningful. For Besters, it’s “pure relaxation” that feels “good for my soul”. Hank (a 39-year-old steward who has cared for one tree bed for about three years) reports: “I’m so focused … when I do something in the [tree bed] … I forget the world.”

Care and connection

Caring for tree beds also helps stewards connect with neighbours and the wider community, while encouraging others to take up stewardship themselves. One steward described receiving “a lot of positive recognition from people I don’t know”, while another said an “insane number of people” stop to chat while she is gardening her tree bed.

Once she transformed a neglected tree bed into a clearly cared-for space, Besters noticed that people began treating it differently: dog excrement and litter declined. Visible signs of care signal that a place is valued, which can prompt more respectful behaviour from others.

In one of our early studies, we found that 73% of stewards reported first learning about street tree bed stewardship from a neighbour or by seeing someone actively gardening a tree bed. This reinforced previous studies that suggest visible gardening practices can cluster spatially as nearby residents observe and replicate one another’s actions.

In Freiburg, more than 500 residents now participate in the tree sponsorship programme, caring for approximately 700 tree beds. Around 3% of the city’s 22,000 street trees are stewarded. Enhancing even a portion of the remaining beds could expand habitat for plants and insects and, when strategically located, create ecological stepping stones that reduce isolation and support species movement between larger green spaces.

The social potential of these tree beds may scale in a similar way: stewardship can make these small public spaces meaningful relatively quickly, creating chances for people to connect with nature, develop a stronger sense of place and interact with both neighbours and strangers. And because these acts of care are highly visible, they can inspire others to participate, creating more stewardship, more habitat and more opportunities for nature and social connection.The Conversation

Kelly Baldwin Heid, PhD Candidate, Ecology, Biodiversity and Nature-based Solutions ICLEI Europe, University of Freiburg and Rita de Sousa e Silva, Assistant Professor, Ecology, Leiden University

This article is republished from The Conversation under a Creative Commons license. Read the original article.

Tonnes of fishing gear and plastic are washing up on Seychelles beaches. We tracked where it was coming from

A collection of plastic waste on a beach.
Plastic waste from shipping is causing pollution on many beaches. Hiromi Ito Ame/Shutterstock
Alex Albinski, University of Oxford and Noam Vogt-Vincent, University of Oxford

Vast quantities of plastic and fishing gear are washing up along the shores of the Seychelles, destroying fragile ecosystems and causing significant economic problems.

Aldabra Atoll, a Unesco world heritage site in this archipelago nation of 115 islands, is estimated to have accumulated more than 500 tonnes of plastic on its shores alone. Most of this plastic debris continues to pile up along its beaches today. It was estimated that removing it would cost approximately US$4.68 million (£3.46 million) and would require 18,000 hours of labour.

Small island developing states are particularly vulnerable to plastic debris on their beaches. It can damage tourism and fishing in these coastal communities, which is essential to their economies. Clean-up costs can be prohibitive.

Fish and other marine life can also be killed by getting entangled with or ingesting plastic debris.

It is impossible to tackle this growing problem without knowing where this pollution is coming from and who is responsible. We investigated this in our recent study using computer simulations and observations, focusing on pollution in the western Indian Ocean from fisheries and shipping.

We found that most pollution probably comes from vessels in or near the Seychelles’ own waters. This challenges the assumption from previous work that island plastic mainly drifts in from distant shores.

Fishing gear on the Aldabra Atoll, Seychelles. April Burt and Seychelles Islands Foundation

We know fishing vessels lose nets and gear, and shipping vessels illegally discard plastic and other items. But to work out which vessels are responsible and where their debris ends up, we needed to know which ships and fishing boats operate near the Seychelles.

To do this, we used satellite tracking data from fishing and shipping vessels over five years (from 2018 to 2022) to estimate activity across the region. Using this map, we simulated the drift of billions of virtual pollution fragments and followed where they ended up.

A map showing location of fishing gear.
A map showing debris fishing gear. Author's own.

From this we built a map showing how likely a given vessel location is to pose a risk to the Seychelles’ islands. We did this separately for fishing and shipping.

Our research shows, based on previous fishing activity, that most fishing gear that is swept up on the beaches of the Seychelles comes from fishing within its own exclusive economic zone. These are the waters, extending 200 nautical miles (370km) offshore, over which a state has exclusive control over marine resources, including fisheries.

These waters are full of tuna, and the Seychelles’ economy leans heavily on industrial fishing, both as an employer and as a large source of foreign currency.

Where does the waste come from?

It is likely that some of the gear and plastic waste is coming from EU vessels. The Seychelles’ waters are heavily fished by two types of European fishing boats, purse-seiners and longliners. This falls under a longstanding agreement between the EU and the Seychelles granting them the right to fish here. Purse-seiners circle around tuna schools with a large net, and longliners trail baited hooks over many kilometres.

Indeed, a report presented to the Indian Ocean Tuna Commission found that 76% of 214 of the drifting fish aggregating devices used by tuna fisheries to attract shoals of fish in the Seychelles’ exclusive economic zone were from Spanish-owned vessels. This is an industry making significant profits, while leaving behind environmental damage.

A turtle on the Aldabra Atoll next to lost fishing gear and plastic.
A turtle on the Aldabra Atoll next to lost fishing gear and plastic. April Burt and Seychelles Islands Foundation

Recently, the Seychelles–EU fishing agreement was renewed for 2026–30 at €5,750,000 per year (£4.89 million), allowing 38 EU fishing vessels to operate in these waters. The Seychelles government is believed to have pushed for a 30% rise in this annual payment from the EU but it is believed they settled on 7%, according to some reports.

Given that the cost associated with cleaning up a single island already runs into millions, the Seychelles-EU deal is small compared to the indirect damages imposed on the nation.

Other proposed solutions

International shipping creates other issues. Our study suggests that more than 90% of plastic being swept up on the Seychelles’ coast from shipping comes from just five lanes crossing the western Indian Ocean. The origin and destination ports of these lanes line up with the countries named on labels of plastic bottles washed ashore on Aldabra.

Debris from international shipping lanes requires a different solution. Unlike the tuna fleets fishing under the agreement between the Seychelles and the EU, this is international traffic passing by. A solution to the plastic waste coming from these ships would be more rigorous enforcement of existing international rules against dumping waste at sea, and bilateral cooperation between the Seychelles and the many nations whose ships use these routes.

Even simple measures could cut litter. For instance, ensuring vessels carry enough safe drinking water to reduce the use of plastic bottles should cut some debris found on Aldabra.

The true cost of cleaning up this huge level of plastic pollution tends not to fall on those who have left it there. The Seychelles needs to work out the cost of the damage being done by these mountains of waste to get a better deal in future negotiations with the EU.

That should help fund clean ups and repair the fragile ecosystems of the islands, helping to preserve them for the future.The Conversation

Alex Albinski, DPhil Candidate in Physics, University of Oxford and Noam Vogt-Vincent, Associate Professor in Earth Sciences, University of Oxford

This article is republished from The Conversation under a Creative Commons license. Read the original article.

From war to weather, Australian farmers are planting spring crops in an uncertain world

A male farmer touches a wheat crop in a paddock.
ArtistGNDphotography/Getty
Katharina Belt, The University of Western Australia and Samantha Harvie, The University of Western Australia

Australian farmers are heading into spring with an unusual mix of optimism and uncertainty.

The latest crop forecast from the Australian Bureau of Agricultural and Resource Economics and Sciences (ABARES) predicts the nation’s farmers will harvest 61 million tonnes of winter crops.

That would be Australia’s fourth-largest winter harvest on record, sitting 16% above the ten-year average. Despite a dry winter forecast, better than expected rainfall boosted crop growth across South Australia, Victoria and southern New South Wales.

But these national figures don’t capture differences between regions, which can be enormous. For example, conditions in the Mediterranean climate of Western Australia’s cropping zone can be completely opposite to the graingrowing regions of northern NSW with their warm, wet summers.

And fluctuating global fuel and fertiliser markets, coupled with a potentially record-breaking El Niño, are forcing farmers to make some difficult decisions.

Wars and weather

Australian farmers are under pressure on multiple fronts. Here are two worth noting.

Protracted wars

Far beyond Australia’s borders, the conflicts in Ukraine and the Middle East have made fuel, fertiliser, freight and commodity markets even more volatile.

For Australian farmers, the consequences are tangible. High fuel costs and supply constraints limit their ability to apply more fertiliser to their soils. As nitrogen prices soar and forecasts point to a dry end to the season, investing in a crop that may run out of water makes little economic sense.

High fertiliser costs and supply concerns have clearly influenced planting decisions in some regions, according to ABARES data. Some farmers have shifted from wheat to barley, as barley tends to cope better in dry conditions and typically has lower planting costs and fertiliser needs.

But not every farmer responds to fluctuating commodity prices in the same way. Many farmers base planting decisions on factors like plant biology and climatic conditions, rather than price forecasts. Some are sceptical about using ABARES forecasts to make immediate decisions, given government data often lags behind reality.

A strengthening El Niño

A potentially record-shattering El Niño is already underway. The Bureau of Meteorology’s spring outlook suggests it will bring drier conditions to much of southeast Australia and southwestern WA.

For farmers in these regions, this raises concerns about scarce rainfall and late frost. Crops in some areas are several weeks ahead of normal development, potentially leaving flowering and legume crops exposed to frosty conditions.

A mixed bag

To better understand what current conditions are like, we spoke to two farmers from Queensland and WA.

The southern states of Victoria and SA grow the vast majority of our national lentil and faba bean crops. Peter Wilson, a Queensland farmer, Grains Australia Pulse Council chair and director of Wilson International Trade, described conditions in those states as:

very good, with strong soil moisture heading into spring.

Conditions in Queensland and northern NSW’s chickpea regions have been much drier. Recent rain has helped, but local farmers expect yields around average or slightly below.

ABARES data tells a similar story. Lentil production is forecast to reach a record 2.3 million tonnes, while chickpea production could fall by 52%.

In WA, the picture is different again. Brad Burns, who farms in Balla northeast of Geraldton, told us the season began:

almost as good as I’ve witnessed.

Then the rain largely stopped. His farm received just 12 millimetres in August and some of his early wheat has suffered frost damage, something local farmers don’t often encounter. Burns’ early sown canola, wheat and lupin crops are on track to produce above average yields. But, in contrast to national averages, later sown crops will potentially be low yielding, especially without more rain.

Are food shortages a possibility?

In the drought-stricken United Kingdom, farmers are warning of food shortages as they struggle to salvage what little crops they have. Globally, the United Nations predicts the imminent El Niño could push nearly 50 million vulnerable people into acute hunger.

Thankfully, Australians don’t need to worry about food shortages. Our country remains a major food exporter and the latest ABARES forecast is reassuring. It projects wheat production will hit 29.9 million tonnes, which is 3% above the ten-year average. Australia is set to produce 16.4 million tonnes of barley and 7.3 million tonnes of canola, up by 30% and 37% respectively, on their ten-year averages.

The biggest risk for consumers is volatile prices, not empty supermarket shelves. Fluctuating fuel and fertiliser markets are increasing the costs of on-farm production, processing and transport. High grain prices drive up the cost of flour, bread and animal feed, which in turn makes meat, eggs and dairy more expensive.

What do our farmers need now?

Most importantly, we must recognise farmers make an invaluable contribution to Australia’s economy and social fabric. The 2026 National Farmer Wellbeing Report found 91% of Australian farmers feel undervalued, up from 76% in 2023.

Removing excess red tape should be another priority. Industry bodies such as Cattle Australia and the NSW Farmers’ Association say complex regulations around recruitment, pesticides and resource use are stopping farmers from producing the food and fibre Australia needs.

Government must also invest in measures that will help insulate Australian farmers from global commodity shocks and extreme weather. This includes funding research into crop genetics and lower-emission fertilisers.

Consumers can also help by buying Australian-grown produce and reducing food waste, where possible.

The latest national figures suggest Australia is heading towards another impressive harvest. But the experiences of local farmers – who may soon harvest one high-yielding crop while struggling to break even on another – reveal what national forecasts can’t capture. And what happens between now and harvest time remains to be seen.The Conversation

Katharina Belt, Postdoctoral Researcher, Agricultural Science, The University of Western Australia and Samantha Harvie, Research Associate, School of Molecular Sciences, The University of Western Australia

This article is republished from The Conversation under a Creative Commons license. Read the original article.

It’s getting easier to live off‑grid – but it comes with certain costs

A small, modern house surrounded by lush forest.
Tom Watson/Getty
Magnus Söderberg, Griffith University; Anis ur Rehman, Griffith University; Mohammad Sanjari, Griffith University, and Peyman Akhgar, Griffith University

For most of Australian history, “going off-grid” meant living somewhere the main electricity network did not reach.

Isolated communities and remote farming properties have long relied on stand-alone power systems. These typically consist of solar panels, batteries and a diesel generator, with no physical connection to the national grid.

In these places, off-grid power is often the most practical option. Maintaining kilometres of poles and wires for a handful of customers can cost more than individually supplying each property.

A growing number of people are considering off-grid living in rural and remote areas. These households tend to be owner-occupiers with extra funds, suitable roofs or land and an interest in reducing emissions or becoming self-sufficient.

Nevertheless, few people are choosing to completely disconnect from the grid, mainly because of upfront costs. And renters and lower-income households who aim to do so face many more hurdles.

Renewables gaining traction

A growing number of Australians are turning to renewable energy systems.

Across the country, we have installed upwards of 4.2 million rooftop solar systems. Batteries are not far behind, with more than 460,000 installations between July 2025 and early June 2026 alone.

Several factors have made this possible.

For starters, renewable energy technology has become cheaper. The federal Cheaper Home Batteries Program, which provides a discount of about 30% on eligible battery systems, is just one example.

Renewable technology is also rapidly advancing. Modern inverters can keep specific appliances operating during an outage. Home energy-management systems, such as smart meters, allow households to coordinate solar generation, batteries, hot-water systems and electric-vehicle charging – all at the push of a button.

Rules have changed too. Since 2022, power companies have been able to replace expensive grid connections with regulated stand-alone systems. These systems are more economical and allow customers to disconnect from the physical grid without losing any consumer protections.

However, this does not mean every solar-and-battery home can keep running when the grid fails. Most grid-connected solar systems automatically shut down during an outage for safety. And generating back-up power is not always straightforward.

Before buying a household battery, you must consider various factors including how much electricity you use and the size and design of your existing solar system. Microgrids can be a lifeline during natural disasters, but current regulatory frameworks restrict how much energy they can supply and store.

Independence has benefits – and costs

Going off-grid has many advantages including:

  • being free of fluctuating energy prices and network tariffs, which power companies charge for building, maintaining and operating poles, wires and other physical energy infrastructure

  • having more control over where your electricity comes from

  • being more resilient during blackouts

  • in sunny locations, generating enough renewable energy to cover a large share of your household’s annual energy demand.

However, off-grid living also has certain downsides such as:

  • having unreliable or not enough power, particularly when the unfortunate factors of cloudy weather, high demand and equipment failure coincide

  • paying more for back-up energy infrastructure, such as additional battery storage or a diesel generator

  • needing to maintain and eventually replace equipment including batteries, inverters and generators

  • giving up the option to send surplus solar into the grid and be paid for it

  • having to manage off-grid systems yourself or pay someone else to do so.

The economics of going off-grid comes back to location. Leaving the grid makes the most sense in places where installing a new connection or maintaining a long rural line would be extremely expensive. It is much harder to justify in a suburb with reliable, shared infrastructure.

A ‘near off-grid’ future

Our recent review analysed 146 studies looking at how people go from being passive consumers to active energy users that generate, store and manage electricity.

Despite adopting everything from solar systems to electric vehicles, we found most people stay connected to the grid because of the reliability and back-up options it provides.

This suggests households are unlikely to leave the grid en masse. Instead, the future will be one of near off-grid energy systems. Households will be largely self-sufficient over a year, but remain connected for the relatively few hours where they can’t rely on local generation and storage. For most Australians, this hybrid model is much more realistic than going completely off-grid.

However, this raises a difficult policy question. A household that occasionally uses the grid may still expect it to deliver instant and reliable power. Network tariffs must be adjusted to ensure people that can’t afford solar and batteries are not penalised financially. At the same time, households that invest in renewable energy technology should be rewarded, such as through government incentives and rebates.

Australians are no longer wondering if they can leave the grid. Rather, they are questioning if they are better off bearing the costs of off-grid living or having to rely on a shared network. A near off-grid future may provide a middle ground.The Conversation

Magnus Söderberg, Professor and Director, Centre for Applied Energy Economics and Policy Research, Griffith University; Anis ur Rehman, PhD Student, Engineering and Built Environment, Griffith University; Mohammad Sanjari, Senior Lecturer, Electrical Engineering, Griffith University, and Peyman Akhgar, Lecturer, Architecture, Griffith University

This article is republished from The Conversation under a Creative Commons license. Read the original article.

Australia’s vast Nullarbor Plain hides deep caves that can teach us about alien worlds

An orange landscape with a series of holes receding into the distance.
Field team archive GIAM ZRC SAZU
Milo Barham, Curtin University and Matej Lipar, ZRC SAZU; Curtin University

Stretching over 200,000 square kilometres across southern Australia, the vast, flat plains of the Nullarbor mark one of the world’s largest regions of limestone. It formed when an ancient shallow sea retreated some 14 million years ago.

Ultimately, this led to the familiar dry landscape of today, which has acted as a significant barrier for plants, animals, and poorly adapted colonial Victorian-era explorers who described it as “the sort of place one gets into in bad dreams”.

In contrast, the Mirning People of the Nullarbor and Great Australian Bight have lived for tens of thousands of years on this southern margin. They have watched the landscapes change and sea levels fall and rise with the build-up and collapse of the last ice age about 20,000 years ago.

The Bunda Cliffs mark the dramatic edge of the expansive, flat Nullarbor Plain where the arid limestone plains tumble to the Great Australian Bight. Distinct limestone layers are visible in the cliffs with the Nullarbor Limestone overlying the white, chalkier layer known as the Wilson Bluff Limestone. Field team archive GIAM ZRC SAZU

To an untrained eye the Nullarbor Plain appears deceptively simple and featureless. However, beneath the immense plain lies a remarkable, largely hidden underground world.

Over millions of years, water has eaten away at the limestone and created complex cave networks that can extend for kilometres underground. Sadly, the caves remain poorly understood, partly because they’re only really known and accessible where they breach the surface.

Our new study, published in Communications Earth & Environment, reveals a new way to track these cave systems even when they are deeply buried. Our work helps explain the formation of previously mysterious, shallow trench features on the Nullarbor. It also provides a new way to identify hidden caves elsewhere – even beyond our own planet.

Over millions of years, water has eaten away at the limestone creating a Swiss-cheese landscape where caves reach the surface. Field team archive GIAM ZRC SAZU

Valleys, but not from rivers

Scattered across the Nullarbor are tell-tale signs of its vulnerability to being dissolved – small cave openings and shallow depressions.

But there are also structures of previously unknown origin and significance: long (up to 20 km), shallow (a few metres) trenches that trend roughly north-south. They’re almost invisible from the ground, but we can clearly see them in modern digital landscape models.

These shallow trenches look somewhat like flat-bottomed valleys, but they were not carved by rivers. They begin and end abruptly and are not connected to existing rivers or drainage networks that extend into the upland areas around the Nullarbor.

They also lack typical river branching patterns and the sediments within them don’t show any evidence of being deposited from flowing water.

A dirt track on the Nullarbor follows one of the long, almost imperceptible, shallow, north-south sediment-filled valleys. Greyer areas on the left of the foreground represent limestone at the surface. Field team archive GIAM ZRC SAZU

What we discovered

To understand how these strange structures formed, we combined several investigative techniques.

First, we mapped the trenches using drone and aerial photography, as well as detailed satellite-based digital landscape models. Then the layers of soil and rock were measured in boreholes and caves.

One of the field team abseils into a collapse feature to record the sediment and reach the underyling cave system to measure the thickness and any disturbance of the geology. Field team archive GIAM ZRC SAZU

Finally, we used specialised geophysical techniques to “see” inside the Earth, somewhat similar to the way an X-ray enables us to see our internal body structures from the outside.

The work demonstrated that the shallow surface trenches sit above deep zones of broken rock, and in places line up with known cave systems and sinkholes.

This means the trenches are mere muted surface expressions of deeply buried cave systems. These systems are slowly, over millions of years, “collapsing upwards” through the overlying rock layers to reach the surface.

Caves are scientific archives

The results of this work will change how scientists interpret cave landscapes globally. It shows that to explain the surface structures we see, we must look deeper than we might think.

Understanding where voids may exist underground can be important for planning both surface (buildings, roads) and subsurface (tunnels, sewers) engineering works, mitigating geological hazards, and accessing and protecting groundwater resources.

Pockmarked karst landscapes (where rocks are dissolved by water, resulting in caves and sinkholes) represent 15% of the ice-free Earth’s surface and supply water to 10–25% of the global population.

More fundamentally, caves are important scientific archives. Because caves are sheltered from surface weathering and erosion processes, they can preserve snapshots of ancient environments and ecosystems that would otherwise be lost to time.

Furthermore, they may host an array of strange and vulnerable life-forms that have evolved and adapted in isolation. These are some of the least studied organisms on Earth.

To learn more, we must first locate the cave structures. And the results of our study could be very important in this regard.

The dramatic Abrakurrie Cave system beneath the Nullarbor Plain. Photo shows the scale dwarfing the team member, as well as evidence of the cave collapse processes (pile of boulders and rubble in view) that allow the cave to move upwards through the overlying rocks to the surface over time. Field team archive GIAM ZRC SAZU

Caves on other worlds

The implications of this new work even extend beyond our own planet. Because caves offer a stable environment and shelter from damaging space radiation, they provide promising exploration sites for life on other planets.

Mapping of planetary surfaces within our Solar System has identified numerous potential caves, including some thought to be related to karst on Mars.

The Nullarbor’s dry, stable surface is an excellent analogue to help locate the subtle surface fingerprints of hidden cave systems on planets that now lack a dynamic water-cycle – such as Mars. Even if the caves are barren of life, they could be attractive bases for future human explorers.

How many other apparently simple landscapes around the world or on other planets are concealing large cave systems underneath? We don’t yet know, but the trenches we studied are unlikely to be unique. Similar subtle landforms are likely to have been overlooked elsewhere, too.

Sometimes the most remarkable discoveries are waiting in understated but plain view, in landscapes we think we already understand.


The authors would like to acknowledge Matthias Leopold from The University of Western Australia; Rok Ciglič, Mateja Ferk, Jure Tičar, Matija Zorn and Matej Jelovčan from the Research Centre of the Slovenian Academy of Sciences and Arts (ZRC SAZU); John A. Webb from La Trobe University; Uroš Stepišnik, Matej Dolenec, Primož Miklavc, Tomislav Popit and Andrej Šmuc from the University of Ljubljana; and Jian-xin Zhao from The University of Queensland.The Conversation

Milo Barham, Associate Professor, Earth and Planetary Sciences, Curtin University and Matej Lipar, Research Associate, Geosciences, ZRC SAZU; Curtin University

This article is republished from The Conversation under a Creative Commons license. Read the original article.

We found the hidden force that created two chains of underwater volcanoes running side by side

An aerial view of a small island in the middle of the ocean.
Sunset over Mt Lidgbird and Mt Gower at Lord Howe Island. Dylan Shaw/Unspash
Ben Mather, The University of Melbourne and Maria Seton, University of Sydney

Lord Howe Island sits about 600 kilometres off the New South Wales coast, a crescent of rainforest and sea cliffs that draws visitors for its spectacular beaches and its unique birdlife. Few realise they are standing on the weathered remains of a volcano.

And that volcano has family.

Lord Howe is part of a chain of islands, called “seamounts”. It is the only island above sea level – the rest are submerged in the Tasman Sea. Roughly 650 kilometres west runs a second chain, the Tasmantid seamounts, tracing almost the same path.

Two nearly identical chains side by side in the middle of a tectonic plate is unusual. For the first time, in a new paper published in the journal Gondwana Research, we can answer how this happened.

A blowtorch under a moving tectonic plate

Most volcanoes occur where tectonic plates meet. There are a few exceptions, Hawaii being the most famous: a plume of hot rock rises from deep inside the Earth and melts its way through the middle of the Pacific plate.

As the tectonic plate drifts overhead, the plume burns a new hole in it, then another, like a blowtorch under a moving sheet of metal, until a chain of seamounts is formed.

That is exactly what the Tasmantid and Lord Howe chains look like. Both chains get steadily younger towards the south, tracking the northward drift of the Australian plate over the past 40 million years.

Two branches connected by one plume

Our new study found the Lord Howe and Tasmantid seamount chains are connected by the same mantle plume.

A single plume rises from Earth’s deep mantle and gets deflected by a slab of old seafloor, which sank at a subduction zone – where oceanic seafloor is recycled into the Earth’s interior – then stalled about 500 kilometres down where the mantle abruptly becomes stiffer.

The plume cannot go through the dense slab, so it bends around it, escaping through gaps on either side. Two branches reach the surface – two chains of volcanoes form.

Three separate lines of evidence back this up.

The first is a simulation of Earth’s interior. We did not set up our models to reproduce the Tasman Sea – the plates and plumes evolve on their own. Despite this, the plume splitting observed in the models happened to reproduce the 650 to 900 kilometres spacing we observe for the Tasmantid and Lord Howe seamount chains remarkably well. It was sustained for roughly 70 million years.

Numerical simulation of a mantle plume splitting around a ribbon of subducted material in the Earth’s mantle.

The second is reconstructing the last 200 million years of plate motion, mapping where old seafloor sank beneath the Tasman Sea. It reveals a ribbon of slab material with gaps on either side, exactly where the model says each branch should rise.

The third is the chemistry of lavas taken from each chain. Lead isotopes in both chains carry a fingerprint that takes more than a billion years to develop – far too long to have come from the nearby subducted slab, which has only been down there 60 million years.

It confirms that the material erupting at the surface has been brought from the deep mantle and delivered to both chains.

Plate reconstruction of the last 200 million years which shows when the Pacific plate gets subducted in the Western Pacific.

The fate of the plume

One of the most interesting discoveries is that we can predict what will happen to the Tasmantid and Lord Howe seamount chains millions of years into the future.

In the simulation, branching does not last forever. As the slab obstructing the plume sinks deeper into Earth’s mantle, one branch is uncovered and becomes dominant, while the other shuts down.

The Lord Howe seamount chain is producing smaller eruptions since about 23 million years ago, while the Tasmantid volcanoes are producing larger eruptions over the same time.

So our prediction is that the Tasmantid chain becomes the main conduit and Lord Howe will eventually terminate many millions of years from now.

Implications beyond the Tasman Sea

Volcanic hotspots are among the tools geoscientists use to work out how continents have moved, because a plume stays roughly fixed while plates slide over it.

If a chain can be one branch of a plume that shifts as it encounters subducted slabs, then our reconstructions of absolute plate motion may need refining.

It also changes the canonical picture of the deep Earth, where plumes are usually drawn as a straight conduit from Earth’s deep mantle to the surface. Here, we show plumes are dynamic and evolve as they encounter obstacles within the Earth’s mantle.

The same mechanism may explain other closely spaced chains, including Yellowstone in the United States. Some volcanic hotspots that look ordinary today may also have branched in their past.

Seismic images beneath the Tasman Sea are still blurry, so we need higher resolution images to discern each of the branches. We also need more rock samples from these underwater volcanoes to better constrain the geochemistry of the eruptions and whether any recent eruptions have occurred in the southern Tasman Sea.The Conversation

Ben Mather, ARC Early Career Industry Fellow, School of Geography, Earth and Atmospheric Sciences, The University of Melbourne and Maria Seton, Associate Professor, School of Geosciences, University of Sydney

This article is republished from The Conversation under a Creative Commons license. Read the original article.

Careel Head Road Shops and the Bangalley- Burrowong Creeks: Some History 
Careel Bay Marina Environs November 2024 - Spring Celebrations
Careel Bay Playing Fields History and Current
Careel Bay Steamer Wharf + Boatshed: some history 
Careel Creek 
Careel Creek - If you rebuild it they will come
Church Point Public Wharf - 1885 to 2025: Some History 
Clareville Beach
Clareville/Long Beach Reserve + some History
Clareville Public Wharf: 1885 to 1935 - Some History 
Coastal Stability Series: Cabbage Tree Bay To Barrenjoey To Observation Point by John Illingsworth, Pittwater Pathways, and Dr. Peter Mitchell OAM
Community Concerned Over the Increase of Plastic Products Being Used by the Northern Beaches Council for Installations in Pittwater's Environment
Cowan Track by Kevin Murray
Crown Reserves Improvement Fund Allocations 2021
Crown Reserves Improvement Fund 2022-23: $378,072 Allocated To Council For Weed Control - Governor Phillip Park Gets a Grant This Time: full details of all 11 sites
Crown Reserves Improvement Fund Allocations 2023-2024
Crown Reserves Grants 2025 Announced: Local focus on Weeds + Repairs to Long Reef Boardwalk + some pictures of council's recent works at Hitchcock Park - Careel Bay playing fields - CRIF 2025
Curl Curl To Freshwater Walk: October 2021 by Kevin Murray and Joe Mills
Currawong and Palm Beach Views - Winter 2018
Currawong-Mackerel-The Basin A Stroll In Early November 2021 - photos by Selena Griffith
Currawong State Park Currawong Beach +  Currawong Creek
Deep Creek To Warriewood Walk photos by Joe Mills
Microplastic assessment report 2026: Dee Why Lagoon Among Most Polluted in New South Wales - 56.55% of Manly Lagoon's plastic pollution is Artificial Turf - Pittwater Least Polluted
Milton Family Property History - Palm Beach By William (Bill) James Goddard II with photos courtesy of the Milton Family   - Snapperman to Sandy Point, Pittwater
Mona Vale Beach - A Stroll Along, Spring 2021 by Kevin Murray
Mona Vale Headland, Basin and Beach Restoration
Mona Vale Woolworths Front Entrance Gets Garden Upgrade: A Few Notes On The Site's History 
Mother Brushtail Killed On Barrenjoey Road: Baby Cried All Night - Powerful Owl Struck At Same Time At Careel Bay During Owlet Fledgling Season: calls for mitigation measures - The List of what you can do for those who ask 'What You I Do' as requested
Mount Murray Anderson Walking Track by Kevin Murray and Joe Mills
Mullet Creek
Muogamarra Nature Reserve in Cowan celebrates 90 years: a few insights into The Vision of John Duncan Tipper, Founder 
Muogamarra by Dr Peter Mitchell OAM and John Illingsworth
Narrabeen Creek
Narrabeen Lagoon Catchment: Past Notes Present Photos by Margaret Woods
Narrabeen Lagoon Entrance Clearing Works: September To October 2023  pictures by Joe Mills
North Narrabeen in 1911 - Panoramas taken for West's Lakeside Estate 
Out and About July 2020 - Storm swell
Out & About: July 2024 - Barrenjoey To Paradise Beach To Bayview To Narrabeen + Middle Creek - by John Illingsworth, Adriaan van der Wallen, Joe Mills, Suzanne Daly, Jacqui Marlowe and AJG
Palm Beach Headland Becomes Australia’s First Urban Night Sky Place: Barrenjoey High School Alumni Marnie Ogg's Hard Work
Palm Beach Public Wharf: Some History 
Paradise Beach Baths renewal Complete - Taylor's Point Public Wharf Rebuild Underway
Realises Long-Held Dream For Everyone
Paradise Beach Wharf + Taylor's Wharf renewal projects: October 2024 pictorial update - update pics of Paradise Wharf and Pool renewal, pre-renewal Taylors Point wharf + a few others of Pittwater on a Spring Saturday afternoon
Pictures From The Past: Views Of Early Narrabeen Bridges - 1860 To 1966
Pittwater Beach Reserves Have Been Dedicated For Public Use Since 1887 - No 1.: Avalon Beach Reserve- Bequeathed By John Therry 
Pittwater Reserves: The Green Ways; Bungan Beach and Bungan Head Reserves:  A Headland Garden 
Pittwater Reserves, The Green Ways: Clareville Wharf and Taylor's Point Jetty
Pittwater Reserves: The Green Ways; Hordern, Wilshire Parks, McKay Reserve: From Beach to Estuary 
Pittwater Reserves - The Green Ways: Mona Vale's Village Greens a Map of the Historic Crown Lands Ethos Realised in The Village, Kitchener and Beeby Parks 
Pittwater Reserves: The Green Ways Bilgola Beach - The Cabbage Tree Gardens and Camping Grounds - Includes Bilgola - The Story Of A Politician, A Pilot and An Epicure by Tony Dawson and Anne Spencer  
Pittwater spring: waterbirds return to Wetlands
Pittwater's Koalas Driven to Extinction: Some History
Pittwater's Lone Rangers - 120 Years of Ku-Ring-Gai Chase and the Men of Flowers Inspired by Eccleston Du Faur 
Pittwater's Great Outdoors: Spotted To The North, South, East + West- June 2023:  Palm Beach Boat House rebuild going well - First day of Winter Rainbow over Turimetta - what's Blooming in the bush? + more by Joe Mills, Selena Griffith and Pittwater Online
Threatened Species Day 2025 + A few insights into Pittwater's Past + Present Threatened Species 
$378,072 Allocated To Council For Weed Control: Governor Phillip Park Gets a Grant This Time: full details of all 11 sites - Crown Reserves Improvement Fund (CRIF) March 2023
Topham Track Ku-Ring-Gai Chase NP,  August 2022 by Joe Mills and Kevin Murray
Towlers Bay Walking Track by Joe Mills
Trafalgar Square, Newport: A 'Commons' Park Dedicated By Private Landholders - The Green Heart Of This Community
Tranquil Turimetta Beach, April 2022 by Joe Mills
Tree Management Policy Passed
Trial to remove shark nets - NBC - Central Coast - Waverly approached to nominate a beach each
Turimetta Beach Reserve by Joe Mills, Bea Pierce and Lesley
Turimetta Beach Reserve: Old & New Images (by Kevin Murray) + Some History
Turimetta Headland
Turimetta Moods by Joe Mills: June 2023
Turimetta Moods (Week Ending June 23 2023) by Joe Mills
Turimetta Moods: June To July 2023 Pictures by Joe Mills
Turimetta Moods: July Becomes August 2023 by Joe Mills
Turimetta Moods: August Becomes September 2023 ; North Narrabeen - Turimetta - Warriewood - Mona Vale photographs by Joe Mills
Turimetta Moods August 2025 by Joe Mills
Turimetta Moods: Mid-September To Mid-October 2023 by Joe Mills
Turimetta Moods: Late Spring Becomes Summer 2023-2024 by Joe Mills
Turimetta Moods: Warriewood Wetlands Perimeter Walk October 2024 by Joe Mills
Turimetta Moods: November 2024 by Joe Mills
Turimetta Moods: March 2026 by Joe Mills - includes new Sydney Fish Markets

Pittwater's Birds

Attracting Insectivore Birds to Your Garden: DIY Natural Tick Control - small bird insectivores, species like the Silvereye, Spotted Pardalote, Gerygone, Fairywren and Thornbill, feed on ticks. Attracting these birds back into your garden will provide not only a residence for tick eaters but also the delightful moments watching these tiny birds provides.
Aussie Backyard Bird Count 2017: Take part from 23 - 29 October - how many birds live here?
Aussie Backyard Bird Count 2018 - Our Annual 'What Bird Is That?' Week Is Here! - This week the annual Aussie Backyard Bird Count runs from 22-28 October 2018. Pittwater is one of those places fortunate to have birds that thrive because of an Aquatic environment, a tall treed Bush environment and areas set aside for those that dwell closer to the ground, in a sand, scrub or earth environment. To take part all you need is 20 minutes and your favourite outdoor space. Head to the website and register as a Counter today! And if you're a teacher, check out BirdLife Australia's Bird Count curriculum-based lesson plans to get your students (or the whole school!) involved

Australian Predators of the Sky by Penny Olsen - published by National Library of Australia

Australian Raven  Australian Wood Duck Family at Newport

A Week In Pittwater Issue 128   A Week In Pittwater - June 2014 Issue 168

Baby Birds Spring 2015 - Rainbow Lorikeets in our Yard - for Children 

Baby Birds by Lynleigh Greig, Southern Cross Wildlife Care - what do if being chased by a nesting magpie or if you find a baby bird on the ground

Baby Kookaburras in our Backyard: Aussie Bird Count 2016 - October

Balloons Are The Number 1 Marine Debris Risk Of Mortality For Our Seabirds - Feb 2019 Study

Bangalley Mid-Winter   Barrenjoey Birds Bird Antics This Week: December 2016

Bird of the Month February 2019 by Michael Mannington

Birdland Above the Estuary - October 2012  Birds At Our Window   Birds at our Window - Winter 2014  Birdland June 2016

Birdsong Is a Lovesong at This time of The Year - Brown Falcon, Little Wattle Bird, Australian Pied cormorant, Mangrove or Striated Heron, Great Egret, Grey Butcherbird, White-faced Heron 

Bird Songs – poems about our birds by youngsters from yesterdays - for children Bird Week 2015: 19-25 October

Bird Songs For Spring 2016 For Children by Joanne Seve

Birds at Careel Creek this Week - November 2017: includes Bird Count 2017 for Local Birds - BirdLife Australia by postcode

Black Cockatoo photographed in the Narrabeen Catchment Reserves this week by Margaret G Woods - July 2019

Black-Necked Stork, Mycteria Australis, Now Endangered In NSW, Once Visited Pittwater: Breeding Pair shot in 1855

Black Swans on Narrabeen Lagoon - April 2013   Black Swans Pictorial

Blue-faced Honeyeaters Breeding In Pittwater

Brush Turkeys In Suburbia: There's An App For That - Citizen Scientists Called On To Spot Brush Turkeys In Their Backyards
Buff-banded Rail spotted at Careel Creek 22.12.2012: a breeding pair and a fluffy black chick

Cayley & Son - The life and Art of Neville Henry Cayley & Neville William Cayley by Penny Olsen - great new book on the art works on birds of these Australian gentlemen and a few insights from the author herself
Crimson Rosella - + Historical Articles on

Death By 775 Cuts: How Conservation Law Is Failing The Black-Throated Finch - new study 'How to Send a Finch Extinct' now published

Eastern Rosella - and a little more about our progression to protecting our birds instead of exporting them or decimating them.

Endangered Little Tern Fishing at Mona Vale Beach

‘Feather Map of Australia’: Citizen scientists can support the future of Australia's wetland birds: for Birdwatchers, school students and everyone who loves our estuarine and lagoon and wetland birds

First Week of Spring 2014

Fledging - Baby Birds coming to ground: Please try and Keep them close to Parent Birds - Please Put out shallow dishes of water in hot weather

Fledgling Common Koel Adopted by Red Wattlebird -Summer Bird fest 2013  Flegdlings of Summer - January 2012

Flocks of Colour by Penny Olsen - beautiful new Bird Book Celebrates the 'Land of the Parrots'

Friendly Goose at Palm Beach Wharf - Pittwater's Own Mother Goose

Front Page Issue 177  Front Page Issue 185 Front Page Issue 193 - Discarded Fishing Tackle killing shorebirds Front Page Issue 203 - Juvenile Brush Turkey  Front Page Issue 208 - Lyrebird by Marita Macrae Front Page Issue 219  Superb Fairy Wren Female  Front Page Issue 234: National Bird Week October 19-25  and the 2015 the Aussie Back Yard Bird Count: Australia's First Bird Counts - a 115 Year Legacy - with a small insight into our first zoos Front Page Issue 236: Bird Week 2015 Front Page Issue 244: watebirds Front Page Issue 260: White-face Heron at Careel Creek Front Page Issue 283: Pittwater + more birds for Bird Week/Aussie Bird Count  Front Page Issue 284: Pittwater + more birds for Bird Week/Aussie Bird Count Front Page Issue 285: Bird Week 2016  Front Page Issue 331: Spring Visitor Birds Return

G . E. Archer Russell (1881-1960) and His Passion For Avifauna From Narrabeen To Newport 

Glossy Black-Cockatoo Returns To Pittwater by Paul Wheeler Glossy Cockatoos - 6 spotted at Careel Bay February 2018

Grey Butcher Birds of Pittwater

Harry Wolstenholme (June 21, 1868 - October 14, 1930) Ornithologist Of Palm Beach, Bird Man Of Wahroonga 

INGLESIDE LAND RELEASE ON AGAIN BUT MANY CHALLENGES  AHEAD by David Palmer

Issue 60 May 2012 Birdland - Smiles- Beamings -Early -Winter - Blooms

Jayden Walsh’s Northern Beaches Big Year - courtesy Pittwater Natural Heritage Association

John Gould's Extinct and Endangered Mammals of Australia  by Dr. Fred Ford - Between 1850 and 1950 as many mammals disappeared from the Australian continent as had disappeared from the rest of the world between 1600 and 2000! Zoologist Fred Ford provides fascinating, and often poignant, stories of European attitudes and behaviour towards Australia's native fauna and connects these to the animal's fate today in this beautiful new book - our interview with the author

July 2012 Pittwater Environment Snippets; Birds, Sea and Flowerings

Juvenile Sea Eagle at Church Point - for children

King Parrots in Our Front Yard  

Kookaburra Turf Kookaburra Fledglings Summer 2013  Kookaburra Nesting Season by Ray Chappelow  Kookaburra Nest – Babies at 1.5 and 2.5 weeks old by Ray Chappelow  Kookaburra Nest – Babies at 3 and 4 weeks old by Ray Chappelow  Kookaburra Nest – Babies at 5 weeks old by Ray Chappelow Kookaburra and Pittwater Fledglings February 2020 to April 2020

Lion Island's Little Penguins (Fairy Penguins) Get Fireproof Homes - thanks to NSW National Parks and Wildlife Service and the Fix it Sisters Shed

Long-Billed Corella

Lorikeet - Summer 2015 Nectar

Lyre Bird Sings in Local National Park - Flock of Black Cockatoos spotted - June 2019

Magpie's Melodic Melodies - For Children (includes 'The Magpie's Song' by F S Williamson)

Masked Lapwing (Plover) - Reflected

May 2012 Birdland Smiles Beamings Early Winter Blooms 

Mistletoebird At Bayview

Musk Lorikeets In Pittwater: Pittwater Spotted Gum Flower Feast - May 2020

Nankeen Kestrel Feasting at Newport: May 2016

National Bird Week 2014 - Get Involved in the Aussie Backyard Bird Count: National Bird Week 2014 will take place between Monday 20 October and Sunday 26 October, 2014. BirdLife Australia and the Birds in Backyards team have come together to launch this year’s national Bird Week event the Aussie Backyard Bird Count! This is one the whole family can do together and become citizen scientists...

National Bird Week October 19-25  and the 2015 the Aussie Back Yard Bird Count: Australia's First Bird Counts - a 115 Year Legacy - with a small insight into our first zoos

Native Duck Hunting Season Opens in Tasmania and Victoria March 2018: hundreds of thousands of endangered birds being killed - 'legally'!

Nature 2015 Review Earth Air Water Stone

New Family of Barking Owls Seen in Bayview - Church Point by Pittwater Council

Noisy Visitors by Marita Macrae of PNHA 

Pittwater Becalmed  Pittwater Birds in Careel Creek Spring 2018   Pittwater Waterbirds Spring 2011  Pittwater Waterbirds - A Celebration for World Oceans Day 2015

Pittwater's Little Penguin Colony: The Saving of the Fairies of Lion Island Commenced 65 Years Ago this Year - 2019

Pittwater's Mother Nature for Mother's Day 2019

Pittwater's Waterhens: Some Notes - Narrabeen Creek Bird Gathering: Curious Juvenile Swamp Hen On Warriewood Boardwalk + Dusky Moorhens + Buff Banded Rails In Careel Creek

Plastic in 99 percent of seabirds by 2050 by CSIRO

Plover Appreciation Day September 16th 2015

Powerful and Precious by Lynleigh Grieg

Red Wattlebird Song - November 2012

Restoring The Diamond: every single drop. A Reason to Keep Dogs and Cats in at Night. 

Return Of Australasian Figbird Pair: A Reason To Keep The Trees - Aussie Bird Count 2023 (16–22 October) You can get involved here: aussiebirdcount.org.au

Salt Air Creatures Feb.2013

Scaly-breasted Lorikeet

Sea Birds off the Pittwater Coast: Albatross, Gannet, Skau + Australian Poets 1849, 1898 and 1930, 1932

Sea Eagle Juvenile at Church Point

Seagulls at Narrabeen Lagoon

Seen but Not Heard: Lilian Medland's Birds - Christobel Mattingley - one of Australia's premier Ornithological illustrators was a Queenscliff lady - 53 of her previously unpublished works have now been made available through the auspices of the National Library of Australia in a beautiful new book

7 Little Ducklings: Just Keep Paddling - Australian Wood Duck family take over local pool by Peta Wise 

Shag on a North Avalon Rock -  Seabirds for World Oceans Day 2012

Short-tailed Shearwaters Spring Migration 2013 

South-West North-East Issue 176 Pictorial

Spring 2012 - Birds are Splashing - Bees are Buzzing

Spring Becomes Summer 2014- Royal Spoonbill Pair at Careel Creek

Spring Notes 2018 - Royal Spoonbill in Careel Creek

Station Beach Off Leash Dog Area Proposal Ignores Current Uses Of Area, Environment, Long-Term Fauna Residents, Lack Of Safe Parking and Clearly Stated Intentions Of Proponents have your say until February 28, 2019

Summer 2013 BirdFest - Brown Thornbill  Summer 2013 BirdFest- Canoodlers and getting Wet to Cool off  Summer 2013 Bird Fest - Little Black Cormorant   Summer 2013 BirdFest - Magpie Lark

Summer BirdFest 2026: Play antics of New Locals - Blue-faced Honeyeaters Breeding In Pittwater

The Mopoke or Tawny Frogmouth – For Children - A little bit about these birds, an Australian Mopoke Fairy Story from 91 years ago, some poems and more - photo by Adrian Boddy
Winter Bird Party by Joanne Seve

New Shorebirds WingThing  For Youngsters Available To Download

A Shorebirds WingThing educational brochure for kids (A5) helps children learn about shorebirds, their life and journey. The 2021 revised brochure version was published in February 2021 and is available now. You can download a file copy here.

If you would like a free print copy of this brochure, please send a self-addressed envelope with A$1.10 postage (or larger if you would like it unfolded) affixed to: BirdLife Australia, Shorebird WingThing Request, 2-05Shorebird WingThing/60 Leicester St, Carlton VIC 3053.


Shorebird Identification Booklet

The Migratory Shorebird Program has just released the third edition of its hugely popular Shorebird Identification Booklet. The team has thoroughly revised and updated this pocket-sized companion for all shorebird counters and interested birders, with lots of useful information on our most common shorebirds, key identification features, sighting distribution maps and short articles on some of BirdLife’s shorebird activities. 

The booklet can be downloaded here in PDF file format: http://www.birdlife.org.au/documents/Shorebird_ID_Booklet_V3.pdf

Paper copies can be ordered as well, see http://www.birdlife.org.au/projects/shorebirds-2020/counter-resources for details.

Download BirdLife Australia's children’s education kit to help them learn more about our wading birdlife

Shorebirds are a group of wading birds that can be found feeding on swamps, tidal mudflats, estuaries, beaches and open country. For many people, shorebirds are just those brown birds feeding a long way out on the mud but they are actually a remarkably diverse collection of birds including stilts, sandpipers, snipe, curlews, godwits, plovers and oystercatchers. Each species is superbly adapted to suit its preferred habitat.  The Red-necked Stint is as small as a sparrow, with relatively short legs and bill that it pecks food from the surface of the mud with, whereas the Eastern Curlew is over two feet long with a exceptionally long legs and a massively curved beak that it thrusts deep down into the mud to pull out crabs, worms and other creatures hidden below the surface.

Some shorebirds are fairly drab in plumage, especially when they are visiting Australia in their non-breeding season, but when they migrate to their Arctic nesting grounds, they develop a vibrant flush of bright colours to attract a mate. We have 37 types of shorebirds that annually migrate to Australia on some of the most lengthy and arduous journeys in the animal kingdom, but there are also 18 shorebirds that call Australia home all year round.

What all our shorebirds have in common—be they large or small, seasoned traveller or homebody, brightly coloured or in muted tones—is that each species needs adequate safe areas where they can successfully feed and breed.

The National Shorebird Monitoring Program is managed and supported by BirdLife Australia. 

This project is supported by Glenelg Hopkins Catchment Management Authority and Hunter Local Land Services through funding from the Australian Government’s National Landcare Program. Funding from Helen Macpherson Smith Trust and Port Phillip Bay Fund is acknowledged. 

The National Shorebird Monitoring Program is made possible with the help of over 1,600 volunteers working in coastal and inland habitats all over Australia. 

The National Shorebird Monitoring program (started as the Shorebirds 2020 project initiated to re-invigorate monitoring around Australia) is raising awareness of how incredible shorebirds are, and actively engaging the community to participate in gathering information needed to conserve shorebirds. 

In the short term, the destruction of tidal ecosystems will need to be stopped, and our program is designed to strengthen the case for protecting these important habitats. 

In the long term, there will be a need to mitigate against the likely effects of climate change on a species that travels across the entire range of latitudes where impacts are likely. 

The identification and protection of critical areas for shorebirds will need to continue in order to guard against the potential threats associated with habitats in close proximity to nearly half the human population. 

Here in Australia, the place where these birds grow up and spend most of their lives, continued monitoring is necessary to inform the best management practice to maintain shorebird populations. 

BirdLife Australia believe that we can help secure a brighter future for these remarkable birds by educating stakeholders, gathering information on how and why shorebird populations are changing, and working to grow the community of people who care about shorebirds.

To find out more visit: http://www.birdlife.org.au/projects/shorebirds-2020/shorebirds-2020-program

Surfers for Climate

A sea-roots movement dedicated to mobilising and empowering surfers for continuous and positive climate action.

Surfers for Climate are coming together in lineups around the world to be the change we want to see.

With roughly 35 million surfers across the globe, our united tribe has a powerful voice. 

Add yours to the conversation by signing up here.

Surfers for Climate will keep you informed, involved and active on both the local and global issues and solutions around the climate crisis via our allies hub. 

Help us prevent our favourite spots from becoming fading stories of waves we used to surf.

Together we can protect our oceans and keep them thriving for future generations to create lifelong memories of their own.

Visit:  http://www.surfersforclimate.org.au/

Create a Habitat Stepping Stone!

Over 50 Pittwater households have already pledged to make a difference for our local wildlife, and you can too! Create a habitat stepping stone to help our wildlife out. It’s easy - just add a few beautiful habitat elements to your backyard or balcony to create a valuable wildlife-friendly stopover.

How it works

1) Discover: Visit the website below to find dozens of beautiful plants, nest boxes and water elements you can add to your backyard or balcony to help our local wildlife.

2) Pledge: Select three or more elements to add to your place. You can even show you care by choosing to have a bird appear on our online map.

3) Share: Join the Habitat Stepping Stones Facebook community to find out what’s happening in the natural world, and share your pics, tips and stories.

What you get                                  

• Enjoy the wonders of nature, right outside your window. • Free and discounted plants for your garden. • A Habitat Stepping Stone plaque for your front fence. • Local wildlife news and tips. • Become part of the Pittwater Habitat Stepping Stones community.

Get the kids involved and excited about helping out! www.HabitatSteppingStones.org.au

No computer? No problem -Just write to the address below and we’ll mail you everything you need. Habitat Stepping Stones, Department of Environmental Sciences, Macquarie University NSW 2109. This project is assisted by the NSW Government through its Environmental Trust

Newport Community Gardens

Anyone interested in joining our community garden group please feel free to come and visit us on Sunday at 10am at the Woolcott Reserve in Newport!


Keep in Touch with what's happening on Newport Garden's Facebook: https://www.facebook.com/newportcg/

Avalon Preservation Association


The Avalon Preservation Association, also known as Avalon Preservation Trust. We are a not for profit volunteer community group incorporated under the NSW Associations Act, established 50 years ago. We are committed to protecting your interests – to keeping guard over our natural and built environment throughout the Avalon area.

Membership of the association is open to all those residents and/or ratepayers of Avalon Beach and adjacent areas who support the aims and objectives of our Association.

Report illegal dumping

NSW Government

The RIDonline website lets you report the types of waste being dumped and its GPS location. Photos of the waste can also be added to the report.

The Environment Protection Authority (EPA), councils and Regional Illegal Dumping (RID) squads will use this information to investigate and, if appropriate, issue a fine or clean-up notice. Penalties for illegal dumping can be up to $15,000 and potential jail time for anybody caught illegally dumping within five years of a prior illegal dumping conviction.

The Green Team

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This Youth-run, volunteer-based environment initiative has been attracting high praise from the founders of Living Ocean as much as other local environment groups recently. 
Creating Beach Cleans events, starting their own, sustainability days - ‘action speaks louder than words’ ethos is at the core of this group. 

Australian Native Foods website: http://www.anfil.org.au/

Wildlife Carers and Organisations in Pittwater:

Sydney Wildlife rescues, rehabilitates and releases sick, injured and orphaned native wildlife. From penguins, to possums and parrots, native wildlife of all descriptions passes through the caring hands of Sydney Wildlife rescuers and carers on a daily basis. We provide a genuine 24 hour, 7 day per week emergency advice, rescue and care service.

As well as caring for sick, injured and orphaned native wildlife, Sydney Wildlife is also involved in educating the community about native wildlife and its habitat. We provide educational talks to a wide range of groups and audiences including kindergartens, scouts, guides, a wide range of special interest groups and retirement villages. Talks are tailored to meet the needs and requirements of each group. 

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Found an injured native animal? We're here to help.

Keep the animal contained, warm, quiet and undisturbed. Do not offer any food or water. Call Sydney Wildlife immediately on 9413 4300, or take the animal to your nearest vet. Generally there is no charge. Find out more at: www.sydneywildlife.org.au

Southern Cross Wildlife Care was launched over 6 years ago. It is the brainchild of Dr Howard Ralph, the founder and chief veterinarian. SCWC was established solely for the purpose of treating injured, sick and orphaned wildlife. No wild creature in need that passes through our doors is ever rejected. 

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People can assist SCWC by volunteering their skills ie: veterinary; medical; experienced wildlife carers; fundraising; "IT" skills; media; admin; website etc. We are always having to address the issue of finances as we are a non commercial veterinary service for wildlife in need, who obviously don't have cheque books in their pouches. It is a constant concern and struggle of ours when we are pre-occupied with the care and treatment of the escalating amount of wildlife that we have to deal with. Just becoming a member of SCWC for $45 a year would be a great help. Regular monthly donations however small, would be a wonderful gift and we could plan ahead knowing that we had x amount of funds that we could count on. Our small team of volunteers are all unpaid even our amazing vet Howard, so all funds raised go directly towards our precious wildlife. SCWC is TAX DEDUCTIBLE.

Find out more at: southerncrosswildlifecare.org.au/wp/

Avalon Community Garden

Community Gardens bring people together and enrich communities. They build a sense of place and shared connection.

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Avalon Community Garden is a community led initiative to create accessible food gardens in public places throughout the Pittwater area. Our aim is to share skills and knowledge in creating fabulous local, organic food. But it's not just about great food. We also aim to foster community connection, stimulate creative ideas for community resilience and celebrate our abundance. Open to all ages and skills, our first garden is on the grounds of Barrenjoey High School (off Tasman Road). Become part of this exciting initiative to change the world locally. 

Avalon Community Garden
2 Tasman Road
North Avalon

Newport Community Garden: Working Bee Second Sunday of the month

Newport Community Gardens Inc. is a not for profit incorporated association. The garden is in Woolcott Reserve.

Objectives
Local Northern Beaches residents creating sustainable gardens in public spaces
Strengthening the local community, improving health and reconnecting with nature
To establish ecologically sustainable gardens for the production of vegetables, herbs, fruit and companion plants within Pittwater area 
To enjoy and forge friendships through shared gardening.
Membership is open to all Community members willing to participate in establishing gardens and growing sustainable food.
Subscription based paid membership.
We meet at the garden between 9am – 12 noon
New members welcome

For enquiries contact newportcommunitygardenau@gmail.com

Living Ocean


Living Ocean was born in Whale Beach, on the Northern Beaches of Sydney, surrounded by water and set in an area of incredible beauty.
Living Ocean is a charity that promotes the awareness of human impact on the ocean, through research, education, creative activity in the community, and support of others who sustain ocean health and integrity.

And always celebrating and honouring the natural environment and the lifestyle that the ocean offers us.

Our whale research program builds on research that has been conducted off our coastline by our experts over many years and our Centre for Marine Studies enables students and others to become directly involved.

Through partnerships with individuals and organizations, we conceive, create and coordinate campaigns that educate all layers of our community – from our ‘No Plastic Please’ campaign, which is delivered in partnership with local schools, to film nights and lectures, aimed at the wider community.

Additionally, we raise funds for ocean-oriented conservation groups such as Sea Shepherd.

Donations are tax-deductable 
Permaculture Northern Beaches

Want to know where your food is coming from? 

Do you like to enrich the earth as much as benefit from it?

Find out more here:

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What Does PNHA do?

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About Pittwater Natural Heritage Association (PNHA)
With urbanisation, there are continuing pressures that threaten the beautiful natural environment of the Pittwater area. Some impacts are immediate and apparent, others are more gradual and less obvious. The Pittwater Natural Heritage Association has been formed to act to protect and preserve the Pittwater areas major and most valuable asset - its natural heritage. PNHA is an incorporated association seeking broad based community membership and support to enable it to have an effective and authoritative voice speaking out for the preservation of Pittwater's natural heritage. Please contact us for further information.

Our Aims
  • To raise public awareness of the conservation value of the natural heritage of the Pittwater area: its landforms, watercourses, soils and local native vegetation and fauna.
  • To raise public awareness of the threats to the long-term sustainability of Pittwater's natural heritage.
  • To foster individual and community responsibility for caring for this natural heritage.
  • To encourage Council and the NSW Government to adopt and implement policies and works which will conserve, sustain and enhance the natural heritage of Pittwater.
Act to Preserve and Protect!
If you would like to join us, please fill out the Membership Application Form ($20.00 annually - $10 concession)

Email: pnhainfo@gmail.com Or click on Logo to visit website.

Think before you print ; A kilo of recycled paper creates around 1.8 kilograms of carbon emissions, without taking into account the emissions produced from transporting the paper. So, before you send a document to print, think about how many kilograms of carbon emissions you could save by reading it on screen.

Friends Of Narrabeen Lagoon Catchment Activities

Bush Regeneration - Narrabeen Lagoon Catchment  
This is a wonderful way to become connected to nature and contribute to the health of the environment.  Over the weeks and months you can see positive changes as you give native species a better chance to thrive.  Wildlife appreciate the improvement in their habitat.

Belrose area - Thursday mornings 
Belrose area - Weekend mornings by arrangement
Contact: Phone or text Conny Harris on 0432 643 295

Wheeler Creek - Wednesday mornings 9-11am
Contact: Phone or text Judith Bennett on 0402 974 105
Or email: Friends of Narrabeen Lagoon Catchment : email@narrabeenlagoon.org.au

Pittwater's Environmental Foundation

Pittwater Environmental Foundation was established in 2006 to conserve and enhance the natural environment of the Pittwater local government area through the application of tax deductible donations, gifts and bequests. The Directors were appointed by Pittwater Council. 

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About 33% (about 1600 ha excluding National Parks) of the original pre-European bushland in Pittwater remains in a reasonably natural or undisturbed condition. Of this, only about 400ha remains in public ownership. All remaining natural bushland is subject to encroachment, illegal clearing, weed invasion, feral animals, altered drainage, bushfire hazard reduction requirements and other edge effects. Within Pittwater 38 species of plants or animals are listed as endangered or threatened under the Threatened Species Act. There are two endangered populations (Koala and Squirrel Glider) and eight endangered ecological communities or types of bushland. To visit their site please click on logo above.

Avalon Boomerang Bags


Avalon Boomerang Bags was introduced to us by Surfrider Foundation and Living Ocean, they both helped organise with the support of Pittwater Council the Recreational room at Avalon Community Centre which we worked from each Tuesday. This is the Hub of what is a Community initiative to help free Avalon of single use plastic bags and to generally spread the word of the overuse of plastic. 

Find out more and get involved.

"I bind myself today to the power of Heaven, the light of the sun, the brightness of the moon, the splendour of fire, the flashing of lightning, the swiftness of wind, the depth of the sea, the stability of the earth, the compactness of rocks." -  from the Prayer of Saint Patrick