CONTROL OF A DESERT-GRASSLAND TRANSITION BY A KEYSTONE RODENT GUILD

被引：443
|
作者：
BROWN, JH
HESKE, EJ
机构：
[1] Department of Biology, University of New Mexico, Albuquerque
来源：
SCIENCE | 1990年 / 250卷 / 4988期
关键词：
D O I：
10.1126/science.250.4988.1705
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：
Twelve years after three species of kangaroo rats (Dipodomys spp.) were removed from plots of Chihuahuan Desert shrub habitat, density of tall perennial and annual grasses had increased approximately threefold and rodent species typical of arid grassland had colonized. These were just the most recent and dramatic in a series of changes in plants and animals caused by experimental exclusion of Dipodomys. In this ecosystem kangaroo rats are a keystone guild: through seed predation and soil disturbance they have major effects on biological diversity and biogeochemical processes.
引用
收藏
页码：1705 / 1707
页数：3
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