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keystone species

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  • keystone species — keystone species, a plant or animal species necessary to the survival of an ecosystem: »So interdependent are the creatures in an ecosystem that even the temporary extinction of a single “keystone” species can create powerful ripples (Richard… …   Useful english dictionary

  • Keystone species — A keystone species is a species that has a disproportionate effect on its environment relative to its abundancecite journal author=Paine, R.T. year=1995 title=A Conversation on Refining the Concept of Keystone Species journal=Conservation Biology …   Wikipedia

  • keystone species — /ˈkistoʊn spisɪz/ (say keestohn spees1z) noun a species which has a disproportionate effect on an ecosystem in relation to its population size, its removal or decline resulting in significant consequences and possibly the ultimate destruction of… …  

  • keystone species — a species that is essential to the food web of an ecosystem, e.g. Boregadus saida in the Arctic; a species whose loss from an ecosystem would cause a greater than average change in other species populations or ecosystem processes …   Dictionary of ichthyology

  • keystone species — noun A species that exerts a large, stabilizing influence throughout an ecological community, despite its relatively small numerical abundance …   Wiktionary

  • Keystone — may refer to:* Keystone (architecture), the piece at the apex of an arch or vault * The Keystone effect, caused by projecting an image onto a surface at an angle, or by photography at an angle * Keystone correction for these types of… …   Wikipedia

  • Species-area curve — The species area relationship for a contiguous habitat In ecology, a species area curve is a relationship between the area of a habitat, or of part of a habitat, and the number of species found within that area. Larger areas tend to contain… …   Wikipedia

  • Species distribution — A species range maps represents the geographical region where individuals of a species can be found. This is a range map of Juniperus communis, the common juniper. Species distribution is the manner in which a biological taxon is spatially… …   Wikipedia

  • Keystone Wetlands — Keystone Heritage Park is an archeological site, an archaic wetlands and a botanical garden. The 52 acre park in El Paso’s Upper Valley is a City owned park managed by a volunteer Board of Directors who are charged with preserving and developing… …   Wikipedia

  • cultural keystone species — a fish that has major significance in the lives and traditions of a group of people, e.g.eulachon (Thaleichthys pacificus, Osmeridae) in the Pacific northwest to the Nuxalk. See also grease trail …   Dictionary of ichthyology

  • Keystone State Park (Pennsylvania) — Geobox Protected Area name = Keystone State Park native name = other name = other name1 = category local = Pennsylvania State Park category iucn = III image caption = etymology type = etymology = country = United States state = Pennsylvania… …   Wikipedia

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