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Vocab 20.2

Terms for chapter 20 section 2

species richness the number of different species in an area or community
species eveness a measure of the relative adundance of each species species in an ecological community
species-area effect a pattern in which the number of species in an area increases as the area increases
disturbance in ecology, an event that changes a community by removing or destroying organisms or altering resource availability
stability the tendancy of a community to maintain a relativiley constant structure
ecological succession a gradual processes of change and replacement in a community
primary succession succession that begins in an area that previosly did not support life
secondary succession the process by which one community replaces another community that has been partially or totally destroyed
pioneer species a species that colonizes an unhabited area and taht starts an ecological cycle in which many other species become estabolished
climax community a community that, after a process of ecological succession, has reached a generally stable state
Created by: SheaM16