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

摘要: Approximately 90% of the original woodlands Mount Lofty Ranges South Australia has been cleared, modified or fragmented, most severely in last 60 years, and affecting avifauna dependent on native vegetation. This study identifies which woodland-dependent species are still declining two different habitats, Pink Gum–Blue Gum woodland Stringybark woodland. We analyse Woodland Bird Long-Term Monitoring Dataset for 1999–2007, to look changes abundance 59 species. use logistic regression prevalence lists a Bayesian framework, List Length Analysis control variation detectability. Compared with Reporting Rate Analysis, more traditional approach, provides tighter confidence intervals by accounting changing Several common were significantly. Increasers generally large-bodied generalists. Many birds have already disappeared from this naturally isolated island, our results suggest that specialist insectivores likely follow. The can be regarded as ‘canary landscape’ temperate elsewhere – without immediate action their bird communities follow trajectory avifauna. Alternatively, extensive habitat restoration management, we could avoid paying extinction debt.