Valone T J, Brown J H
Department of Biology, University of New Mexico, Albuquerque 87131.
Science. 1995 Feb 10;267(5199):880-3. doi: 10.1126/science.7846530.
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.
对奇瓦瓦沙漠长期实验数据的分析表明，在移除了更格卢鼠（更格卢鼠属）的地块上，其他啮齿动物的物种多样性更高。这种差异是由于在没有具有竞争优势的更格卢鼠的情况下，小型食谷啮齿动物的定殖率持续较高且灭绝概率较低。这个生态系统实验的结果证明了竞争排斥和集合种群动态对自然群落生物多样性的重要性。
