c10 - Ecological Succession and Disturbance Transitions in...

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Ecological Succession and Disturbance Transitions in the species composition of a community through ecological time
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Primary Succession Change in community composition on a site which previously has had no living organisms
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Example: Colonization following a large scale disturbance (volcanic eruption) time
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Example: Glacial Retreat
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Secondary Succession Succession in an area that has been cleared or modified by a disturbance and already has a soil base in place
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Diagram of bog succession
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Oldfield succession
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Succession on Dunes
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Changes During Succession Biomass Species Composition Organic matter Food chains to food webs
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Pioneer Species Rapid growth (opportunistic) Relatively poor competitors in stable environments Generalists (r-selected species)
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Climax community May take 100’s or 1000’s of years to reach this stage Stage at which system has reached steady- state equilibrium Most permanent of all the stages
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This note was uploaded on 02/12/2011 for the course BSC 2008 taught by Professor Blohm during the Spring '08 term at University of Florida.

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c10 - Ecological Succession and Disturbance Transitions in...

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