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Ch20 Sec 2

ch20 s2

QuestionAnswer
Species Richness The number os species in a community
Species Evenness The relative abundance of each species
Species-area effect The pattern of species richness is that larger areas usually contain more species that smaller areas do
Disturbance Events that change communities, remove or destroy organisms from communties, or alter resource avaibility
Stability The tendency of community to maintain relatively constant conditions
Ecological Succession The gradual sequential regrowth of a community od species ina an area
Primary Succession The development of a community in an area that has not supported life previously, such as bare rock, a sand dune, or an island formed by and volcanic eruption
Secondary Succession The squenctial replacement of speices that follows dusruption of existing communities
Pioneer Species The species of organisms that predominate early in succession
Climax Community The raditional description of succession is that the community proceeds through a predictable series of stages until it reaches a stable end point
Created by: celesteb34
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