CallUrl('www>mhhe>comhtml',0), The ~TildeLink() To explain how species coexist, in 1934 G. F. Gause proposed the ~TildeLink(): species cannot coexist if they have the same niche. AP Biology/Community Ecology. The competitive exclusion principle, which is also known as Gause’s law of competitive exclusion, states that any two species that require the same resources cannot coexist. CallUrl('biologydictionary>netcomhtml',1), The ~TildeLink() states that two species with similar needs for the same limiting resources cannot coexist in the same place.The ecological niche is the sum total of a species' use of abiotic and biotic resources in the environment. The result is that each species occupies a … Allergies are responses generated by the immune system towards an allergen. 1.2K views Competition - An interaction within or between species, where either organisms or populations are competing for the same resource. CallUrl('www>course-notes>orgwikipedia>orgcombio-medicine>orgbiologyreference>comhtml',0), ~TildeLink()Related Biology TermsNiche - The way that an organism fits in to an ecosystem, the resources it uses and the way it affects other organisms. Competitive exclusion principle definition biology - 11537981 Competitive exclusion in ecology. The competitive exclusion principle, sometimes referred to as Gause's Law of competitive exclusion or just Gause's Law, states that two species that compete … Within a species, either all members obtain part of a necessary resource such as Ecologists have come to understand that all species have an ecological niche: the unique set of resources used by a species, which includes its interactions with other species. competitive exclusion principle The principle that two species cannot coexist in the same ecological niche in the same area because one species will out-compete the other. constitutive defense Competitive Exclusion Principle Resources are often limited within a habitat and multiple species may compete to obtain them. 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