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beta-diversitybeta-Diversität (ger.)

  • “The extent of change of community composition, or degree of community differentiation, in relation to a complex-gradient of environment”. (Whittaker 1960)  
    diversity
    1960

    The two phenomena involved [“diversity of individual stands, and relative differentiation of vegetation patterns along topographic moisture gradients”] suggest the need for distinguishing three aspects or levels of species-diversity in natural comnmunities: […] (2) The extent of change of community composition, or degree of community differentiation, in relation to a complex-gradient of environment, or a pattern of environments, which may be designated secondary or “beta” diversity.

    Whittaker, R.H. (1960). Vegetation of the Siskiyou Mountains, Oregon and California. Ecol. Monogr. 30, 279-338: 320.

    1982

    beta diversity A measure of the rate and extent of change in species along a gradient from one habitat to others; cf. alpha diversity, gamma diversity.

    Lincoln, R.J., Boxshall, G.A. & Clark, P.F. (1982). A Dictionary of Ecology, Evolution and Systematics: 30.