Testing a mechanistic explanation for the latitudinal gradient in mammalian species richness across North America

被引：0

作者：

Kilpatrick, AM ^{[1
]}

Mitchell, WA

Porter, WF

Currie, DJ

机构：

[1] Univ Wisconsin, Dept Zool, Madison, WI 53706 USA

[2] Univ Ottawa, Dept Biol, Ottawa, ON K1N 6N5, Canada

[3] Consortium Conservat Med, Beijing 100011, Peoples R China

[4] Indiana State Univ, Dept Ecol & Organismal Biol, Terre Haute, IN 47809 USA

来源：

EVOLUTIONARY ECOLOGY RESEARCH | 2006年 / 8卷 / 02期

关键词：

evolutionarily stable strategy; mammal; optimal foraging; species diversity; thermoregulation;

D O I：

暂无

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

Hypothesis: Spatial variation in species richness is caused by increased maintenance metabolic costs that increase habitat overlap and decrease species richness. Organisms: Non-volant mammals in North America. Results: The latitudinal gradient in species richness could be completely explained by variation in maintenance metabolic costs. Additional spatial variation in species richness was positively correlated with the number of habitats (vegetation types and range in elevation) in an area. Conclusion: Local processes of habitat selection and habitat availability are important mechanisms determining spatial variation in species richness.

引用

页码：333 / 344

页数：12

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