Earlier this year the TSR Hub initiated an ambitious project to determine how a small endangered native marsupial, the Kangaroo Island dunnart, responds
when one of its prime threats, predation by feral cats, is controlled or removed. The idea, of course, is to secure a future for the dunnart but in
doing so it’s hoped there’s a whole lot more we can learn about saving threatened species. Dr Rosemary Hohnen from Charles Darwin University
is leading the work and explains here what’s involved.
Feral cats are a key cause of biodiversity loss in Australia and overseas. Across Australia there are thought to be between 2.1 and 6.3 million feral cats and they have been implicated in the decline and extinction of some 20 mammal species. Many threatened Australian mammal species now only persist in fenced ‘feral-free’ exclosures or offshore islands. The national Threatened Species Strategy has made tackling feral cats a core priority and particularly on biodiversity rich offshore islands.
Top image: Coastal heath on Kangaroo Island. Researchers and managers from multiple groups came together earlier this year to discuss progress on the cat eradication project and how best to go about monitoring the island’s threatened species. Image: Rosemary Hohnen.
Your small local patch of bushland could be playing a much bigger role in conserving biodiversity than you think. A global study just published in PNAS looked at the conservation values of vegetation patches in 27 countries on four continents including Australia, and considered their size and distance to other habitat.
New research by the Threatened Species Recovery Hub has identified invasive species as the no. 1 threat to Australian biodiversity with habitat loss a close second.
The exceptionally long-beaked far eastern curlew is the world’s largest migratory shorebird. It is also one of the most well-travelled. This globe-trotting bird was listed as Critically Endangered in Australia in 2016, with its numbers in rapid decline since it was first listed as Least Concern in 2004.
A new video summarises the findings of a University of Queensland PhD project on northern quolls in the Pilbara. Once found all the way from Brisbane to the Pilbara, quolls are now listed nationally and internationally as Endangered, and are restricted to just a few isolated populations, mostly on rocky habitats.
On average, populations of Australia’s threatened birds have decreased by half since 1985, according to Australia’s new Threatened Bird Index.