Regional patterns of continuing decline of the eastern quoll†

• DOI: 10.1071/am22010
• Publication Date: 2022-09-19T23:51:46Z
• Authors: Calum X. Cunningham; Zach Aandahl; Menna E. Jones; Rowena Hamer; Christopher N. Jo...
• Keywords: Monotreme; Population decline; Mainland

Like many other Australian mammals, eastern quolls (Dasyurus viverrinus) were widespread in the south-east of mainland Australia but went extinct there during 20th century. The species remained abundant Tasmania until it rapidly declined from 2001 to 2003, coinciding with a period unsuitable weather. We provide an updated analysis quoll population trends using time series annual spotlight counts (1985–2019) collected across most species’ range. Eastern and early 2000s. In addition previously documented severe decline 2000s east northeast, we present new evidence earlier north (mid-1990s) more recent south (~2009). Declines have continued unabated last decade, resulting ~67% since late 1990s area high abundance. Although major coincided unfavourable weather, continuing declines suggest undetermined causes are also involved. can no longer assume presence ensures long-term survival, highlighting urgent need conserve remaining populations Tasmania.