BSC 2011 Chapter Notes - Chapter 53: Ecological Niche, Camouflage, Paramecium
27 Aug 2016
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Document Summary
Community: group of populations (different species) that live close enough to interact, interspecific interactions - how the populations in a community interact with the environment & each other. Some of the key relationships in the life of an organism are with other species: intraspecific interactions - key relationship with members of the same species. Community interactions: also called: interspecific interactions, 3 basic categories, competition, predation, symbioses, a) parasitism, b) commensalism, c) mutualism. Competition: competition harms both species (-/-, competition is predicated on 2 concepts. Competitive exclusion principle: when 2 species compete, 1 must lose & will be eliminated from the environment. Ecological niche: all of the biotic + abiotic resources that a species uses in its environment. Niche: sum total of a species use of the biotic & abiotic resources in an environment. Think of it as the species" place in the ecosystem. The roles (jobs) it occupies in an ecosystem.
