BIO 126 Lecture Notes - Lecture 24: Competitive Exclusion Principle, Character Displacement, Niche Differentiation
26 May 2016
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Document Summary
When two organisms are competing for the same resource, something typically wins and one fails. This invasive kudzu smothers and strangles any other plant in its path. (stay the fuck away) It out competes native plants and excludes them. Gause worked with 3 protists paramecium aurelia, paramecium bursaria, and. Paramecium caudatum: grown separately all 3 grew logistically, when p. caudatum and p. aurelia grown together, p. caudatum went extinct, when p. caudatum and p. bursaria grown together, neither went extinct. Concluded that 2 species with exactly the same requirements cannot live together in the same place and use the same resources, that is, occupy the same niche. Resource partitioning differentiation of niches, both in space and time, that enables similar species to coexist in a community. Robert macarthur examined coexistence between five species of warblers feeding within spruce trees in new england.
