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Keystone species
Organisms & populations
A species whose effects on community or ecosystem structure are disproportionately large relative to its abundance.
Paine, R. T. (1969). A note on trophic complexity and community stability. The American Naturalist, 103(929), 91–93. Power, M. E., Tilman, D., Estes, J. A., et al. (1996). Challenges in the quest for keystones. BioScience, 46(8), 609–620.
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