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Presence
Planning diagnostics
Evidence that an organism occurs in or uses a landscape element or system. Presence establishes occurrence or use but does not by itself demonstrate population persistence, successful reproduction, or ecological effectiveness.
Hall, L. S., Krausman, P. R., & Morrison, M. L. (1997). The habitat concept and a plea for standard terminology. Wildlife Society Bulletin, 25(1), 173–182.
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