3 - Community Ecology Community Ecology - the study of all...

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Community Ecology Community Ecology - the study of all the organisms in a given area at a given time. Fig 38.8b and 38.8c Interspecific Interactions Predation + - Mutualism + + Commensalism + 0 Parasitism + - Competition - - Competition Limiting factor Interspecific competition interactions between individuals of different species when both require the same scarce resource. (greatest between organisms that obtain their food in similar ways) Competitive exclusion Fig 38.10 when 2 species are competing for a resource, the species that uses the resource more efficiently will eventually eliminate the other. But they can coexist on a long-term basis if their niches differ in one or more feat. The Niche - Image and Fig. 38.9 pattern of living (biological role) Realized niche – actual niche the organism is able to occupy Fundamental niche – Occupying the entire niche they are theoretically capable of using Resource partitioning - Fig 38.11 – avoid competition as much as possible. Divides up resources to create two realized niches.
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This note was uploaded on 03/21/2008 for the course BIO 301M taught by Professor Jasper during the Spring '08 term at University of Texas.

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3 - Community Ecology Community Ecology - the study of all...

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