Autogenic succession

In ecology, autogenic succession is succession driven by the biotic components of an ecosystem. In contrast, allogenic succession is driven by the abiotic components of the ecosystem.

The plants themselves (biotic components) cause succession to occur.

These aspects lead to a gradual ecological change in a particular spot of land, known as a progression of inhabiting species. Autogenic succession can be viewed as a secondary succession because of pre-existing plant life. http://www.epa.gov/ecopage/upland/oak/oak94/Proceedings/Platt1.gif

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