observed process of change in the species structure of an ecological community over time
Gradual growth of organisms in an area that was previously bare, such as rock. (i.e: lichens, mosses, and ferns will first appear on bare rock.
The series of community changes which take place on a previously colonized, but disturbed or damaged habitat. (i.e: areas which have been cleared of existing vegetation- such as after tree-felling in a woodland) and destructive events such as fires.
Species that is first to establish itself in an area where nothing is growing-or in an area that has been devastated by fire,flood, plowing, etc.
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