EFFECTS OF COMPETITION, COLONIZATION, AND EXTINCTION ON RODENT SPECIES-DIVERSITY

被引：69

作者：

VALONE, TJ ^{[1
]}

BROWN, JH ^{[1
]}

机构：

[1] UNIV NEW MEXICO, DEPT BIOL, ALBUQUERQUE, NM 87131 USA

来源：

SCIENCE | 1995年 / 267卷 / 5199期

关键词：

D O I：

10.1126/science.7846530

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：

Analyses of long-term experimental data from the Chihuahuan desert. revealed that species diversity of other rodents was higher on plots from which kangaroo rats (Dipodomys spp.) had been removed. The difference was due to consistently higher colonization and lower extinction probabilities of small granivorous rodents in the absence of competitively dominant kangaroo rats. The results of this ecosystem experiment demonstrate the importance of both competitive exclusion and metapopulation dynamics for biological diversity in a natural community.

引用

页码：880 / 883

页数：4

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