competitive exclusion principle

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Related to Principle of Competitive Exclusion: Gause's principle

competitive exclusion principle

n.
The ecological principle that when two species compete for the same critical resources within an environment, one of them will eventually outcompete and displace the other. Also called Gause's law.
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References in periodicals archive ?
The principle of competitive exclusion holds for system (2) if one of the following conditions holds.
The principle of competitive exclusion does not hold for system (2) if [b.sub.1] > (1/2)[[sigma].sup.2.sub.1], ([b.sub.1] - (1/2)[[sigma].sup.2.sub.1])/[a.sub.11] < ([b.sub.2] + (1/2)[[sigma].sup.2.sub.2])/[b.sub.21], and ([b.sub.1] - (1/2)[[sigma].sup.2.sub.1])/[a.sub.11] < ([b.sub.3] + (1/2)[[sigma].sup.2.sub.3])/[b.sub.31].
In this paper, we have proposed and analyzed the principle of competitive exclusion about a Lotka-Volterra model with two predators competing for one prey by stochastic perturbation.

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