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    Author(s): H.E. Harding; J.S. Benfield; E.F. Bolstad; P.V. Helfman; E.B.D. Jones
    Date: 1998
    Source: Proc. Natl. Acad. Sci. USA Vol. 95, pp. 14843-14847, December 1998 Ecology
    Publication Series: Miscellaneous Publication
    PDF: View PDF  (218 KB)

    Description

    The influece of past land use on the present-day diversity of stream invertebrates and fish was investigated by comparing watersheds with different land-use history. Whole watershed land use in the 1950s was the best predictor of present-day diversity, whereas riparian land use and watershed land use in the 1990s were comparatively poor indicators. Our findings indicate that past land-use activity, particularly agriculture, may result in long-term modifications to and reductions in aquatic diversity, regardless of reforestation of riparian zones. Preservation of habitat fragments may not be sufficient to maintain natural diversity in streams, and maintenance of such biodiversity may require conservation of much or all of the watershed.

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    Citation

    Harding, H.E.; Benfield, J.S.; Bolstad, E.F.; Helfman, P.V.; Jones, E.B.D., III. 1998. Stream Biodiversity: The Ghost of Land Use Past. Proc. Natl. Acad. Sci. USA Vol. 95, pp. 14843-14847, December 1998 Ecology

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