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Chapter 20 Section 2
| Question | Answer |
|---|---|
| species richness | the number of different species in an area or community |
| species evenness | a measure of the relative abundance of each species in an ecological communtiy |
| species-area effect | a pattern in which the number of species in an area increases as the are increases |
| disturbance | in ecology, an event that changes a communtiy by removing or destroying organisms or altering resource availability |
| stability | the tendency of a community to maintain a relatively consistent structure |
| ecological succesion | a gradual process of change and replacement in a community |
| primary succesion | succesion that begins in an area that did not originally support life |
| secondary succesion | the process by which one communtiy replaces another communtiy that has been partially or totally destroyed |
| pioneer species | a species that colonizes an uninhibited areand that starts an ecological cycle in which many other species become established |
| climax community | a community that, after a process of ecological succesion, has reached a generally stable state |
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