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Evidence of rapid population decline of the eastern quoll (Dasyurus viverrinus) in Tasmania

Citation

Fancourt, BA and Hawkins, CE and Nicol, SC, Evidence of rapid population decline of the eastern quoll (Dasyurus viverrinus) in Tasmania, Australian Mammalogy, 35, (2) pp. 195-205. ISSN 0310-0049 (2013) [Refereed Article]

Copyright Statement

Copyright 2013 Australian Mammal Society

DOI: doi:10.1071/AM13004

Abstract

Australia’s mammalian fauna has suffered unparalleled extinctions and declines in recent history. Tasmania has remained largely unaffected by these losses; however, marsupial dynamics are changing rapidly and new threats are emerging. Once abundant throughout south-eastern Australia, the eastern quoll (Dasyurus viverrinus) survives only in Tasmania. Until recently, it was considered widespread and common, but it may be undergoing a rapid and severe decline. The aim of this study was to quantify changes in eastern quoll populations over recent years. Data were compiled from statewide spotlight surveys, repeated historic trapping surveys and bycatch records from non-target trapping surveys. Spotlight surveys from 150 sites across Tasmania revealed a 52% reduction in the number of eastern quoll sightings over the 10 years to 2009. Declines of 61–100% were observed in trapping surveys at three study sites compared with trapping conducted 18–31 years earlier. A reduction in trap success was recorded in five of six non-target surveys, with declines of 51–100% over 1–12 years. These results suggest that the eastern quoll can no longer be presumed secure in Tasmania. Urgent management action may be needed to ensure the future conservation of the species in its last remaining stronghold.

Item Details

Item Type:Refereed Article
Keywords:conservation status, endangered, native cat, spotlighting, survey methods, threatened species, trapping
Research Division:Environmental Sciences
Research Group:Environmental Science and Management
Research Field:Conservation and Biodiversity
Objective Division:Environment
Objective Group:Ecosystem Assessment and Management
Objective Field:Ecosystem Assessment and Management at Regional or Larger Scales
Author:Fancourt, BA (Miss Bronwyn Fancourt)
Author:Hawkins, CE (Dr Clare Hawkins)
Author:Nicol, SC (Associate Professor Stewart Nicol)
ID Code:86205
Year Published:2013
Web of Science® Times Cited:10
Deposited By:Zoology
Deposited On:2013-08-28
Last Modified:2017-10-31
Downloads:0

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