Australia is home to some of the world’s most unique plants and animals, yet many species are facing increasing pressure from habitat loss, invasive species, climate change and human activity. Over recent decades, governments and conservation organisations have responded through habitat protection, species monitoring and recovery programs. Despite these efforts, biodiversity loss remains a major environmental challenge. This data story explores the current state of Australia’s threatened wildlife, the conservation actions taken in response, and whether these efforts have been successful in reversing species decline.
Source: Department of Climate Change, Energy, the Environment and Water (DCCEEW), Threatened Species State Lists dataset (Data.gov.au).
Australia’s biodiversity crisis is reflected in the large number of species currently listed as vulnerable, endangered and critically endangered. Threatened species are found across both the plant and animal kingdoms, demonstrating that biodiversity loss is affecting entire ecosystems rather than isolated species. This chart provides a snapshot of the current conservation challenge and highlights the scale of the problem facing Australia today. Faced with growing biodiversity loss, Australia has invested heavily in conservation strategies designed to protect species and their habitats.
Source: Australian Bureau of Statistics (2025), Protected Areas.
One of Australia’s most important conservation strategies has been the expansion of protected areas. Since 2004, the proportion of protected land has more than doubled, reflecting growing recognition of the importance of habitat protection. Protected areas provide critical refuges for wildlife and form the foundation of many species recovery efforts.
Protecting habitat is only one part of conservation. Effective action also depends on understanding how wildlife populations are changing over time.
Source: Threatened Species Index (TSX), monitored taxa database by conservation status, 2025.
Australia’s conservation efforts have expanded beyond habitat protection to include stronger wildlife monitoring programs. Since the 1980s, the number of monitored threatened species has increased substantially across vulnerable, endangered and critically endangered groups. This growth in monitoring provides researchers with the information needed to track biodiversity change, identify species at risk and support evidence-based conservation decisions.
While habitat protection and monitoring have both expanded significantly, the ultimate measure of success is whether wildlife populations are actually recovering.
Source: Threatened Species Index (TSX), national Threatened Species Index trend series, 1985–2022.
Despite substantial conservation investment, the Threatened Species Index shows that many threatened wildlife populations have continued to decline over time. Although protected areas and monitoring programs have strengthened conservation efforts, broader environmental pressures continue to affect species across Australia. These findings suggest that conservation actions have slowed some impacts but have not yet been sufficient to reverse biodiversity decline at a national scale.
However, the overall trend does not tell the whole story. Some species have demonstrated that recovery is possible when conservation efforts are targeted and sustained.
Source: Threatened Species Index (TSX), species-level threatened mammal recovery data, 2025.
Several threatened mammal species have shown remarkable population growth through intensive conservation management. These species demonstrate that carefully designed recovery programs can reverse declines and improve population outcomes. These success stories provide valuable lessons for future conservation initiatives and show that positive change is possible.
Australia’s biodiversity crisis remains one of the country’s most significant environmental challenges. Today, hundreds of plant and animal species remain threatened, highlighting the scale of the problem. In response, Australia has expanded protected areas and invested heavily in wildlife monitoring, providing a stronger foundation for conservation action. However, despite these efforts, the overall trend for many threatened species populations continues to decline, suggesting that current conservation measures have not yet been enough to reverse biodiversity loss at a national scale. Encouragingly, several threatened mammals have shown strong recovery under targeted conservation programs, demonstrating that positive outcomes are possible. Together, these findings suggest that conservation works, but greater investment, broader implementation and long-term commitment will be essential to secure the future of Australia’s unique wildlife.