Paying the extinction debt: Woodland birds in the Mount Lofty Ranges, South Australia
Szabo, J. K., Vesk, P. A., Baxter, P. W. J., & Possingham, H. P. (2011) Paying the extinction debt: Woodland birds in the Mount Lofty Ranges, South Australia. Emu, 111(1), pp. 59-70.
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 GumBlue Gum woodland and Stringybark woodland. We analyse the Mount Lofty Ranges Woodland Bird Long-Term Monitoring Dataset for 1999-2007, to look for changes in abundance of 59 species. We use 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.
Impact and interest:
Citation counts are sourced monthly from and citation databases.
These databases contain citations from different subsets of available publications and different time periods and thus the citation count from each is usually different. Some works are not in either database and no count is displayed. Scopus includes citations from articles published in 1996 onwards, and Web of Science® generally from 1980 onwards.
Citations counts from theindexing service can be viewed at the linked Google Scholar™ search.
|Item Type:||Journal Article|
|Keywords:||abundance, Bayesian analysis, biomonitoring, bird, data set, extinction, habitat fragmentation, habitat management, habitat restoration, habitat type, identification method, logistics, population decline, regression analysis, species diversity, temperate environment, vegetation type, woodland, Australia, Mount Lofty Ranges, South Australia, Aves|
|Divisions:||Current > Schools > School of Earth, Environmental & Biological Sciences
Current > QUT Faculties and Divisions > Science & Engineering Faculty
|Copyright Owner:||CSIRO Publishing|
|Deposited On:||10 Mar 2015 06:07|
|Last Modified:||16 Mar 2015 04:31|
Repository Staff Only: item control page