30 - community ecology

30 - community ecology - Community Ecology Community - all...

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1 Community Ecology ± Community - all the interacting populations of organisms living together in a specific habitat or geographic area at a particular time ± Key questions about a community ± What species are there? ± What are the relative abundances of the species? ± *How did the community come about (assembly rules)? ± *What forces determine the structure of the community? ± Biotic: Competition, disease, predation, mutualisms, etc. ± Abiotic: climate, disturbance, soil type, etc ± *How do communities change over time and why? ± Succession: primary and secondary ± Stability Community assembly ± Why are the species in a given community found together? ± Is a community a coevolved and coadapted set of species that have been living together for long periods of time? ± Or is a community just a random assemblage of species with overlapping niche requirements?
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2 Consider the case of invasive species Where it has been studied, individual species seem to have different niche requirements that
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This note was uploaded on 05/14/2008 for the course BIO 325H taught by Professor Staff during the Spring '08 term at University of Texas.

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30 - community ecology - Community Ecology Community - all...

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