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 | | Ecological succession is a development sequence in which plant communities, or seres, succeed one another as they progress to a stable climax, the most complex community of organisms possible in an area. |
 | | Human activity on Earth is rapidly decreasing biodiversity by contributing to extinctions through dispersing competing organisms, hunting, fire, habitat alteration, and fragmentation. |
 | | KEY TERMS habitat ecological niche community xerophytes ecological succession climax pioneer species bioclimatic frontiers commensalism protocooperation mutualism competition predation parasitism herbivory allelopathy symbiosisevolution speciation extinction dispersal endemic species cosmopolitan species disjunction biodiversitySTUDY QUESTIONS Differentiate between habitat, ecological niche, and community. |
| www.wiley.com /college/strahler/0471238007/studyguide/s_ch23.doc (766 words) |
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