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

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  • 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 …  

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  • 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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