Australia’s 49 Ecosystem Threats Point to Three Shared Jobs

A national count of listed Australian ecosystems found 49 threats, and three already-known jobs would help almost every community on that list. Javiera Olivares-Rojas, Carly Cook, David Duncan and Jessica Walsh built the first consistent threats file for the 103 ecological communities on the national list in March 2024, when 45 were Critically Endangered, 56 Endangered and 2 Vulnerable.

Since that snapshot Canberra has added more communities, stood up a biodiversity certificate market whose first product is trees, and cut real on-ground nature spend. The diagnosis was overlap. The response has been more listings and new offices.

Fourteen Threats Sit on the Average Community

Olivares-Rojas, then at Monash University’s School of Biological Sciences with Walsh and Cook, and Duncan at the University of Melbourne, read conservation advices and listing papers rather than running new field surveys. Their first national synthesis of threats, published in Diversity and Distributions, found each community carried multiple pressures, from six to 27, for a mean of 14.4. Twenty of the 103 were temperate woodlands, the largest single group, clustered on the east coast and in south-west Western Australia.

Invasive species and disease reached 102 communities. Habitat loss, fragmentation and degradation reached 101. Inside those two buckets, farming was the common land-use pressure and weeds were the common invader. Climate and harsh weather, changed fire, and urban growth sat close behind.

HOW THE 103 COMMUNITIES WERE HIT

The authors translated those pressures into on-ground jobs and published an open national threats database so agencies could stop treating each listing as a one-off emergency. Walsh and Olivares-Rojas put the public case in plain language in December 2024.

Our study exposed a sobering reality. Our ecological communities face 49 diverse threats, ranging from land clearing and grazing to pollution and changed fire patterns. Recovery will be complex and difficult, but not impossible.

Javiera Olivares-Rojas and Jessica Walsh, School of Biological Sciences, Monash University, in The Conversation

White Box Woodland Still Carries 23 Pressures

White Box-Yellow Box-Blakely’s Red Gum Grassy Woodland and Derived Native Grassland once ran across large parts of Victoria, New South Wales, the Australian Capital Territory and southern Queensland. More than 90% of it has been cleared. The remnant still faces 23 distinct pressures, including broken patches, extra soil nutrients from fertiliser, and grazing regimes that do not fit the ground layer of tussock grasses and herbs under the eucalypts.

The community has a critically endangered grassy woodland listing on the federal books. Listing did not empty the threat file. The authors used it as a worked example of how many separate jobs sit on one remaining woodland.

Alpine sphagnum bogs and fens, in southern New South Wales, the ACT, northern Victoria and Tasmania, show the same pile-up in wet country. Invasive herbivores, hotter and more frequent bushfires, and droughts hit peat that stores water and carbon and is slow to rebuild between burns. Fire-sensitive moss and the soils under it take the damage together, so a single hot season writes down several functions at once.

In Cumberland Plain Woodland, another critically endangered community on shale plains west of Sydney, the authors point to African olive as a weed that smothers the native understorey. Pulling it is a local job with a national pattern: woody weeds fill the gaps that clearing and changed fire open, then hold those gaps against the plants the listing was meant to save.

Why Restoration, Weeds and Fire Keep Recurring

Almost every listed community would gain from the same three jobs. Habitat restoration, meaning reversing clearing damage and putting lost plants back, was required by 95% of the 103. Invasive weed management was required by 90%. Work on ecological fire regimes, including cultural burning in some places and fire intervals that match the plants in others, was required by 83%.

THE THREE JOBS THAT KEEP RECURRING

• Replanting and repair: Put local vegetation back on cleared or broken ground and reconnect patches so remnants are not left as islands.
• Weed control: Cut or remove plants that outcompete natives for light, water and nutrients, and that load extra fuel into the next fire.
• Fire that fits the plants: Bring back First Peoples’ cultural burning where it belongs, and set intervals and intensity that the remaining community can survive.

Those three do not exhaust the file. Livestock grazing, counted inside the agriculture threat, still required a dedicated management job for 73% of communities. Across the whole list, the number of strategies per community ran from two to 14, with a mean of 7.9, and 28% needed at least ten. Weeds and fire also amplify each other. The paper notes that gamba grass, an introduced pasture species, can lift fuel loads so fires burn at intensities up to eight times those in native grassland, which is why a weed job and a fire job are often the same season of work.

SHARED JOBS ON THE MARCH 2024 LIST

• Restoration: Needed by 95% of listed communities.
• Weed management: Needed by 90%.
• Ecological fire: Needed by 83%.
• Grazing management: Needed by 73%.

Shared threats are not the same as shared maps. A restoration crew on a woodland remnant does not automatically carry listed animals that live elsewhere. The efficiency the authors described is narrower: the same three jobs recur so often that a national program on replanting, weeds and fire would touch almost the entire TEC list, including communities that have little else in common.

Listings That Arrived After the Count

The study froze the list in March 2024. The list did not freeze. King Island scrub complex was listed as Endangered on 4 September 2024. On 5 September 2025 the Dry rainforests of south-east New South Wales and eastern Victoria were listed as Critically Endangered, taking the national total to 106. Those southernmost rainforests sit in moist gullies and outcrops; more frequent fire is named as a core pressure, on top of climate and the other usual companions.

On 16 January 2026 two more communities went on the books: the River Murray downstream of the Darling, with its aquatic and floodplain systems, as Critically Endangered, and the wetlands and inner floodplains of the Macquarie Marshes as Endangered. The Department of Climate Change, Energy, the Environment and Water still describes nationally listed threatened ecological communities as groups of native plants, animals and other organisms in a unique habitat, typically already cut into small scattered patches.

LISTINGS AFTER THE MARCH 2024 SNAPSHOT

1. 4 September 2024: King Island scrub complex listed as Endangered.
2. 5 September 2025: Dry rainforests of south-east New South Wales and eastern Victoria listed as Critically Endangered; national list reaches 106.
3. 16 January 2026: River Murray downstream of the Darling listed as Critically Endangered; Macquarie Marshes wetlands and inner floodplains listed as Endangered.

Each new name is a legal trigger. A person must not take an action likely to have a significant impact on a listed community without the environment minister’s approval. It is not a crew, a weed budget, or a burning plan. The authors’ point was that the threat file was already shared; adding communities without a shared jobs program extends the inventory faster than the work.

Replanting Woodland Is the Market’s First Method

The Nature Repair Act 2023 built a voluntary national biodiversity market. The first legislated product is the replanting native forest and woodland method, made as the Nature Repair (Replanting Native Forest and Woodland Ecosystems) Methodology Determination 2025. Projects revegetate productive and historically cleared land with local native plants and are meant to rebuild ecological links. The Clean Energy Regulator registers projects and can issue one biodiversity certificate per project. Certificates under this method cannot be used as regulatory environmental offsets.

That last rule matters for listed communities. Replanting is the job the Monash-Melbourne team found on 95% of the TEC file. The market will pay for trees on cleared land, and a project can sit on the same ground as a carbon credit project and seek both a biodiversity certificate and Australian Carbon Credit Units. It will not, under this method, stand in for damage approved somewhere else.

Environment law changes passed on 28 November 2025 let later methods say whether certificates may be used as offsets. The National Environmental Protection Agency started on 1 July 2026. A second tranche of reforms started on 24 August 2026, with another due on or before 1 December 2026. An “enhancing native vegetation” method, aimed at remnant patches in farming country, was expected in late 2026 after Nature Repair Committee consultation in July 2026. A “protect and conserve” method, aimed at the national goal of protecting 30% of land by 2030, was expected in early 2027.

Fire and hoofed animals are still in the scoping pile: right-way fire in arid rangelands, savanna fire with First Nations groups, and management of pigs, buffalo and cattle in wetlands and sensitive country. Those briefs sit closer to the 90% weed-and-invader file and the 83% fire file than a tree-planting certificate does. None of them was a legislated method by September 2026.

Nature Funding Falls in Real Terms

The Threatened Species Action Plan 2022-2032 still names 110 priority species and 20 priority places. A 2025 progress note from the department said the government was investing over $700 million in the direct protection and recovery of threatened species and ecological communities, a multi-year stock that also covers the Saving Native Species program. The current Natural Heritage Trust phase is $1.1 billion for on-ground work, with $145 million tagged for threatened species and priority landscapes, including pest control, weed work, planting and fire management.

Annual on-ground nature money is a different figure, and it is shrinking. The Biodiversity Council, a scientist-led group, put on-ground nature programs at $496 million for 2026-27 against $518 million in 2025-26, a 9% real cut once inflation is counted, falling to $323 million in 2028-29, a 46% real cut from the 2025-26 spend. That would take nature’s share under 0.04% of the federal budget. The same group says scientists have costed 1% of the budget as the scale needed to stop further extinctions, restore 30% of degraded land, and conserve 30% of land and sea by 2030.

TWO MONEY PILES, NOT ONE

Weed and pest line items are smaller still, even though the agriculture department puts the annual cost of established weeds to farming at over $4 billion and pest animals at almost $1 billion. On 4 November 2025 it announced $5 million for 26 projects on deer, pigs, rubber vine, African boxthorn and other weeds, inside an $11 million one-year extension of a communities pest-and-weed program. The Invasive Species Council said in 2026 it had secured a two-year, $100 million extension of the Saving Native Species Fund after a funding cliff.

Walsh and Olivares-Rojas asked for a coordinated national restoration effort, more on-ground money, stronger protection against further loss, consistent threat records, and faster cuts to greenhouse gases, including work toward the global aim of restoring 30% of degraded ecosystems by 2030. Canberra built a certificate market, an environment agency, and a longer TEC list. The three jobs that would touch almost every listed community still run on short grants, pilots, and methods that have not been written yet.

The first woodland certificate cannot be cashed in as an offset for knocking down more of the same. Until weed and fire methods exist, and until annual on-ground spend stops falling, the overlap the authors mapped remains an unused discount on a bill that listings keep lengthening.

Frequently Asked Questions

What Is a Threatened Ecological Community Under Australian Law?

Under the Environment Protection and Biodiversity Conservation Act 1999 it is a naturally occurring group of native plants, animals and other organisms interacting in a unique habitat, listed as Critically Endangered, Endangered or Vulnerable. Types on the national list include woodlands, grasslands, shrublands, forests, wetlands, marine systems, ground springs and cave communities. Listing starts recovery advice and a significant-impact test; it does not itself hire a restoration crew.

How Many Broad Threat Groups Did the Synthesis Use?

The team sorted 49 specific threats into eight broad groups, such as pollution and invasive species. Each community faced a mean of six broad groups, ranging from three to eight, and 21 communities were hit by all eight. Nutrient loads sit in the file as an example of a specific threat that is easy to name and hard to unwind once fertiliser has changed the soil.

Which Extra Jobs Sit Behind Restoration, Weeds and Fire?

Grazing management was required for 73% of communities, a fourth recurring job inside the agriculture threat. The mean community needed 7.9 strategies, ranging from two to 14, and 28% needed at least ten. Several specific threats in the dataset had no matching on-ground strategy at all, which is why the authors called the three-job list a starting map, not a full work order.

When Was White Box-Yellow Box-Blakely’s Red Gum Woodland Listed?

It has been listed as Critically Endangered from 17 May 2006. Between 16 July 2000 and that date, its extent sat inside the earlier Grassy White Box Woodlands listing. Approved conservation advice from the department took effect on 31 August 2023 and is the current management reference on the federal profile.

Does an EPBC Listing Stop Further Damage on Its Own?

No. A person must not take an action that has, will have, or is likely to have a significant impact on a listed community without approval from the Australian Government environment minister, after environmental assessment. The listing is a legal brake on new harm, not a funded plan to reverse the 14.4 threats the average community already carries.