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realized nicheRealnische (ger.)

  • The niche a viable population of a species occupies in the presence of competitor species. (Oxford Dict. of Ecology 2004)
    niche fundamental niche

    the intial results suggest that in stable homogeneously diverse biotops the abundances of different species are arranged as if the realized niches were non-overlapping

    Hutchinson, G.E. (1958). Concluding remarks. Cold Spring Harb. Symp. Quant. Biol. 22, 415-427: 418; 422.


    The “fundamental niche” and “realized niche,” coined by Hutchinson in 1957, are seemingly identical to our “potential niche” and “operational niche”; however, we feel that our terms, which were borrowed in part from Mason and Langenheim (1957), are perhaps more useful, particularly as they are integrated with these authors’ “operational environment” and “potential environment.”

    Parker, B.C. & Turner, B.L. (1961). “Operational niches” and “community-interaction values” as determined from in vitro studies of some soil algae. Ecology 15, 228-238: 233.


    realized niche That part of the fundamental nicheq. v. actually occupied by a species in the presence of competitive or interactive species; realized ecospace; postinteractive niche.

    Lincoln, R.J., Boxshall, G.A. & Clark, P.F. (1982). A Dictionary of Ecology, Evolution and Systematics: 212.