indicator species

indicator species

      organism—often a microorganism or a plant—that serves as a measure of the environmental conditions that exist in a given locale. For example, greasewood indicates saline soil; mosses (moss) often indicate acid soil. Tubifex worms indicate oxygen-poor and stagnant water unfit to drink. The presence of certain species of plants suggests how well other species might grow in the same place.

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Universalium. 2010.

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  • indicator species — noun (biology) A species whose presence or absence indicates particular conditions in a habitat • • • Main Entry: ↑indicate …   Useful english dictionary

  • Indicator species — An indicator species is any biological species that defines a trait or characteristic of the environment. For example, a species may delineate an ecoregion or indicate an environmental condition such as a disease outbreak, pollution, species… …   Wikipedia

  • indicator species — indikatorinės rūšys statusas T sritis ekologija ir aplinkotyra apibrėžtis Organizmų rūšys, kurios labai jautriai reaguoja net į labai nežymius gyvenamosios aplinkos pokyčius. atitikmenys: angl. indicator species vok. Indikatorarten Leitart, f, f… …   Ekologijos terminų aiškinamasis žodynas

  • indicator species — 1) a fish species whose status provides information on the overall condition of the ecosystem and of other species in that ecosystem; fish that are sensitive to environmental conditions and which can therefore be used to assess environmental… …   Dictionary of ichthyology

  • indicator species — /ˈɪndəkeɪtə spisiz/ (say induhkaytuh speeseez) noun a species whose disappearance or disturbance gives a warning of a threat to an entire ecosystem, as the Australian bugle for the Monaro region …  

  • 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

  • Indicator plant — An indicator plant is a usually weedy plant that grows in some specific environment, allowing an assessment of soil and other conditions in a place by simple observation of vegetation.Much useful knowledge can be obtained about our land by… …   Wikipedia

  • Species richness — is the number of species in a given area. It is represented in equation form as S.Typically, species richness is used in conservation studies to determine the sensitivity of ecosystems and their resident species. The actual number of species… …   Wikipedia

  • indicator — [in′di kāt΄ər] n. 1. a person or thing that indicates; specif., a) any device, as a gauge, dial, register, or pointer, that measures or records and visibly indicates b) an apparatus that diagrams the varying fluid pressure of an engine in… …   English World dictionary

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