We tested the hypothesis that species losses are correlated
with deforestation (Brooks et al. 1997, 1999a;
Brook et al. 2003) by determining bird extinctions on
six landbridge islands in Southeast Asia. These islands,
which vary considerably in size and extent of deforestation,
were previously surveyed for birds in the late 19th
or early 20th centuries. Southeast Asia is an especially important
region to study extinction because deforestation
rates there are at least three times higher than in other
tropical areas (Sodhi et al. 2004a; Sodhi & Brook 2006).
This region also supports the highest proportion of threatened,
endemic bird and mammal species in the tropics
(Sodhi et al. 2006a, 2010a). Admittedly, extinctions are
We tested the hypothesis that species losses are correlated
with deforestation (Brooks et al. 1997, 1999a;
Brook et al. 2003) by determining bird extinctions on
six landbridge islands in Southeast Asia. These islands,
which vary considerably in size and extent of deforestation,
were previously surveyed for birds in the late 19th
or early 20th centuries. Southeast Asia is an especially important
region to study extinction because deforestation
rates there are at least three times higher than in other
tropical areas (Sodhi et al. 2004a; Sodhi & Brook 2006).
This region also supports the highest proportion of threatened,
endemic bird and mammal species in the tropics
(Sodhi et al. 2006a, 2010a). Admittedly, extinctions are
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