Australia Leads Global Extinction Rates, Western Quolls Reintroduced to Stave Off Losses
Australia currently holds the unenviable distinction of being the global epicentre for mammal extinctions, recording over 100 lost species since the year 1600. This figure represents more than one-third of all global mammal extinctions in that period, far exceeding the rates seen in other biodiversity-rich continents.
Conservation efforts now focus on reversing this trend, with a notable programme involving the reintroduction of the western quoll (Dasyurus geoffroii) to mainland Australia. This carnivorous marsupial, once widespread across arid and semi-arid regions, had been extirpated from the mainland over a century ago, primarily due to habitat destruction and the devastating impact of introduced predators like feral cats and foxes. For decades, its only remaining wild population existed in the south-west of Western Australia.
Scientists from Rewilding Australia and the Australian Wildlife Conservancy (AWC) have successfully relocated a breeding population of western quolls to the Pilliga State Forest in New South Wales. This area, now protected by a 30-kilometre predator-exclusion fence, offers a secure environment for the quolls to re-establish themselves. The programme has seen an initial release of 53 quolls, with plans for further introductions to bolster genetic diversity and population numbers.
The re-establishment of the western quoll is presented as a crucial test case for broader conservation strategies aimed at Australia's imperilled marsupial populations. Success in the Pilliga could inform future rewilding initiatives across the continent, offering a glimmer of hope against a backdrop of severe ecological decline. The ongoing challenge remains the management of invasive species and the preservation of critical habitats necessary for the long-term survival of Australia's unique wildlife.
