Concept 58 - Concept 53.3 Disturbance influences species...

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Concept 53.3 Disturbance influences species diversity and composition Stability is the tendency of a community to reach and maintain a relatively constant  composition of species despite disturbance. Many communities seem to be characterized by change rather than stability. The  nonequilibrium model  proposes that communities constantly change following a  disturbance. disturbance  is an event that changes a community by removing organisms or altering  resource availability. Storms, fires, floods, droughts, frosts, human activities, or overgrazing can be disturbances. A disturbance can have a beneficial effect on a community. Disturbances can create opportunities for species that have not previously occupied habitat  in a community. Small-scale disturbances can enhance environmental patchiness and thus maintain species  diversity in a community.
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This note was uploaded on 01/04/2012 for the course BSC BSC1005 taught by Professor Orlando,rebecca during the Fall '10 term at Broward College.

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Concept 58 - Concept 53.3 Disturbance influences species...

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