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Created page with "== Introduction == A '''keystone species''' is a species that has a disproportionately large effect on its environment relative to its abundance. These species play a critical role in maintaining the structure of an ecological community, influencing the types and numbers of various other species in the community. The concept of the keystone species was introduced in 1966 by Robert T. Paine, a professor of zoology at the University of Washington...."
