Paying the extinction debt: Woodland birds in the Mount Lofty Ranges, South Australia

Szabo, Judit K., Vesk, Peter A., Baxter, Peter W. J. and Possingham, Hugh P. (2011) Paying the extinction debt: Woodland birds in the Mount Lofty Ranges, South Australia. Emu, 111 1: 59-70. doi:10.1071/MU09114

Author Szabo, Judit K.
Vesk, Peter A.
Baxter, Peter W. J.
Possingham, Hugh P.
Title Paying the extinction debt: Woodland birds in the Mount Lofty Ranges, South Australia
Journal name Emu   Check publisher's open access policy
ISSN 0158-4197
Publication date 2011
Year available 2010
Sub-type Article (original research)
DOI 10.1071/MU09114
Volume 111
Issue 1
Start page 59
End page 70
Total pages 12
Place of publication Carlton, Vic., Australia
Publisher CSIRO Publishing
Collection year 2011
Language eng
Formatted abstract
Approximately 90% of the original woodlands of the Mount Lofty Ranges of South Australia has been cleared, modified or fragmented, most severely in the last 60 years, and affecting the avifauna dependent on native vegetation. This study identifies which woodland-dependent species are still declining in two different habitats, Pink Gum–Blue Gum woodland and Stringybark woodland. Weanalyse the Mount Lofty Ranges Woodland Bird Long-Term Monitoring Dataset for 1999–2007, to look for changes in abundance of 59 species.Weuse logistic regression of prevalence on lists in a Bayesian framework, and List Length Analysis to control for variation in detectability. Compared with Reporting Rate Analysis, a more traditional approach, List Length Analysis provides tighter confidence intervals by accounting for changing detectability. Several common species were declining significantly. Increasers were generally large-bodied generalists. Many birds have already disappeared from this modified and naturally isolated woodland island, and our results suggest that more specialist insectivores are likely to follow. The Mount Lofty Ranges can be regarded as a ‘canary landscape’ for temperate woodlands elsewhere in Australia – without immediate action their bird communities are likely to follow the trajectory of the Mount Lofty Ranges avifauna. Alternatively, with extensive habitat restoration and management, we could avoid paying the extinction debt.
© Royal Australasian Ornithologists Union 2011
Keyword Habitat
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2011 Collection
ERA 2012 Admin Only
Ecology Centre Publications
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Created: Tue, 01 Mar 2011, 12:39:59 EST by Kay Mackie on behalf of School of Biological Sciences