Avian extinction and mammalian introductions on oceanic islands

被引:598
作者
Blackburn, TM [1 ]
Cassey, P
Duncan, RP
Evans, KL
Gaston, KJ
机构
[1] Univ Birmingham, Sch Biosci, Birmingham B15 2TT, W Midlands, England
[2] Lincoln Univ, Bioprotect & Ecol Div, Lincoln, New Zealand
[3] Landcare Res, Lincoln, New Zealand
[4] Univ Sheffield, Dept Anim & Plant Sci, Biodivers & Macroecol Grp, Sheffield S10 2TN, S Yorkshire, England
关键词
D O I
10.1126/science.1101617
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
The arrival of humans on oceanic islands has precipitated a wave of extinctions among the islands' native birds. Nevertheless, the magnitude of this extinction event varies markedly between avifaunas. We show that the probability that a bird species has been extirpated from each of 220 oceanic islands is positively correlated with the number of exotic predatory mamma[ species established on those islands after European colonization and that the effect of these predators is greater on island endemic species. In contrast, the proportions of currently threatened species are independent of the numbers of exotic mammalian predator species, suggesting that the principal threat to island birds has changed through time as species susceptible to exotic predators have been driven extinct.
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页码:1955 / 1958
页数:4
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