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Vocab 20.2

Patterns in Communities

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 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 tendency of a community to maintain a relatively constant structure
Ecological Succession A gradual process of change and replacement in a community
Primary Succession Succession that begins in an area that previously did not support life
Secondary Succession The process by which one community replaces another
Pioneer Species a species that colonizes an uninhabited area and that starts an ecological cycle in which many other species became established
Climax Community A community that, after a process of ecological succession, has reached a generally stable state
Created by: GutzwillerL19