COEXISTENCE OF SPECIES COMPETING FOR SHARED RESOURCES
COEXISTENCE OF SPECIES COMPETING FOR SHARED RESOURCES
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DOI：
10.1016/0040-5809(76)90051-4
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发表时间：
1976-01-01
影响因子：
1.4
通讯作者：
MCGEHEE, R
中科院分区：
文献类型：
--
作者：
ARMSTRONG, RA;MCGEHEE, R
建立了一个数学模型，其中任意数量的竞争物种可以共存于4种资源上，这些资源根据代数关系再生。以前试图证明n个物种不能在少于n个资源（竞争排斥原理）的情况下共存的尝试都使用了非常严格的假设，即所有竞争物种的比增长率是资源密度的线性函数。当这一限制放宽时，就有可能发现n个物种可以在少于n个资源上共存的情况。竞争排斥原理应该被认为只适用于固定密度下的共存。
A mathematical model was developed in which any number of competing species can coexist on 4 resources which regenerate according to an algebraic relationship. Previous attempts to prove that n species cannot coexist on fewer than n resources (the competitive exclusion principle) all made use of the very restrictive assumption that the specific growth rates of all competing species are linear functions of resource densities. When this restriction is relaxed, it becomes possible to find situations in which n species can coexist on fewer than n resources. The competitive exclusion principle should be considered to apply only to coexistence at fixed densities.