Research topic:exclusion principle

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competitive exclusion principle

A Dictionary of Plant Sciences | 1998 | | © A Dictionary of Plant Sciences 1998, originally published by Oxford University Press 1998. (Hide copyright information) Copyright

competitive exclusion principle (Gause principle) The principle that two or more resource-limited species, having identical patterns of resource use, cannot coexist in a stable environment: one species will be better adapted and will out-compete or otherwise eliminate the others. The concept was derived mathematically from the logistic equation by Lotka and Volterra, working independently, and was first demonstrated experimentally by G. F. Gause (1934) using two closely related species of Paramecium. When grown separately, both species populations showed normal S-shaped growth curves; when grown together, one species was eliminated.

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