Extinction vulnerability and selectivity: Combining ecological and paleontological views

被引:709
作者
McKinney, ML [1 ]
机构
[1] Univ Tennessee, Dept Geol Sci, Knoxville, TN 37996 USA
[2] Univ Tennessee, Dept Ecol & Evolutionary Biol, Knoxville, TN 37996 USA
来源
ANNUAL REVIEW OF ECOLOGY AND SYSTEMATICS | 1997年 / 28卷
关键词
extinction; vulnerability; selectivity; risk proneness; phylogenetic; mass extinction;
D O I
10.1146/annurev.ecolsys.28.1.495
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 ; 0713 ;
摘要
Extinction is rarely random across ecological and geological time scales. Traits that make some species more extinction-prone include individual traits, such as body size, and abundance. Substantial consistency appears across ecological and geological time scales in such traits. Evolutionary branching produces phylogenetic (as often measured by taxonomic) nesting of extinction-biasing traits at many scales. An example is the tendency, seen in both fossil and modem data, for higher taxa living in marine habitats to have generally lower species extinction rates. At lower taxononomic levels, recent bird and mammal extinctions are concentrated in certain genera and families. A fundamental result of such selectivity is that it can accelerate net loss of biodiversity compared to random loss of species among taxa. Replacement of vulnerable taxa by rapidly spreading taxa that thrive in human-altered environments will ultimately produce a spatially more homogenized biosphere with much lower net diversity.
引用
收藏
页码:495 / 516
页数:22
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