Edge effects and the extinction of populations inside protected areas

被引:1196
作者
Woodroffe, R
Ginsberg, JR
机构
[1] Dept Zool, Cambridge CB2 3EJ, England
[2] Wildlife Conservat Soc, Bronx, NY 10460 USA
关键词
D O I
10.1126/science.280.5372.2126
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
Theory predicts that small populations may be driven to extinction by random fluctuations in demography and loss of genetic diversity through drift, However, population size is a poor predictor of extinction in large carnivores inhabiting protected areas. Conflict with people on reserve borders is the major cause of mortality in such populations, so that border areas represent population sinks. The species most likely to disappear from small reserves are those that range widely-and are therefore most exposed to threats on reserve borders-irrespective of population size. Conservation efforts that combat only stochastic processes are therefore unlikely to avert extinction.
引用
收藏
页码:2126 / 2128
页数:3
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