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Chapter 20 Section 2

Biology vocab

TermDefinition
Species Richness The number of different species in an area or community
Species Evenness The relative abundance of each species
Species-Area Effect A pattern in which the number of species in an area increases as the area increases
Disturbance Events that change communities, remove or destroy organisms from communities, or alter resource availability
Stability The tendency of a community to maintain relatively constant conditions
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 community that has been partially or totally destroyed
Pioneer Species A species that colonizes an uninhabited area and that starts an ecological cycle in which many other species become established
Climax Community A final, stable community in equilibrium with the environment
Created by: Sadrian18
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