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Ecological correlates of extinction proneness in tropical butterflies

Koh, Lian Pin, Sodhi, Navjot S. and Brook, Barry W. (2004). Ecological correlates of extinction proneness in tropical butterflies. Conservation Biology,18(6):1571-1578.

Document type: Journal Article
Citation counts: Scopus Citation Count Cited 96 times in Scopus Article | Citations

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Title Ecological correlates of extinction proneness in tropical butterflies
Author Koh, Lian Pin
Sodhi, Navjot S.
Brook, Barry W.
Journal Name Conservation Biology
Publication Date 2004
Volume Number 18
Issue Number 6
ISSN 0888-8892   (check CDU catalogue open catalogue search in new window)
Scopus ID 2-s2.0-10644237269
Start Page 1571
End Page 1578
Total Pages 8
Place of Publication Madsen, USA
Publisher Blackwell Publishing
HERDC Category C1 - Journal Article (DEST)
Abstract Widespread told rapid losses of natural habitats and biodiversity have made the identification of extinction-prone species a major challenge in conservation biology. We assessed the relative importance of biologically relevant species traits (e.g., body size, ecological specialization) obtained from published records to determine the extinction probability of butterflies in a highly disturbed tropical landscape (i.e.. Singapore). We also developed a taxon-specific model to estimate the extinction Proneness of butterflies in Southeast Asia. Logistic regression analyses showed that adult habitat specialization, larval host plant specificity, geographical distribution, sexual dichromatism, and congenor density were significant and independent determinants of butterfly extinctions in Singapore. Among these traits, specificity of larval host plant and adult habitat specialization were the best correlates of extinction risks. We used this phenomenological extinction-regression model to estimate the relative extinction proneness of 416 butterfly species in Southeast Asia. Our results illustrate the utility of available taxon-specific data for a localized area in estimating Me extinction proneness of closely-related species oil a regional scale. When intensive field studies are not forthcoming especially in regions suffering from rapid biodiversity losses (e.g., southeast Asia), similar approaches could be used to estimate extinction threats for other taxonomic groups.
Keywords fragmented landscapes
sexual selection
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