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State-Transition (Approaches in Ecology)

STATE-TRANSITION REFERS TO a model of vegetation community dynamics that examines the interaction between processes and the multiple persistent communities that can arise from these processes. These models have been developed largely within the field or range management as a reaction to the shortcomings of the Clementian range succession (or range condition model), in which rangelands were viewed as a single climax community that was removed from that climax equilibrium state by stocking rate, grazing pressure, and precipitation, and was constantly in succession back toward that climax community. State-transition models differ from this approach by asserting that multiple persistent vegetation communities (states) can exist and that climatic factors, grazing, and stocking practices and vegetation autecology can cause these communities to shift between one state and ...

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