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Recovery of Fish Communities in a Warm Water Stream Following Pollution Abatement

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  • Michael G. Ryon

    (Oak Ridge National Laboratory, Environmental Sciences Division)

Abstract

The long-term recovery process for fish communities in a warm water stream in East Tennessee was studied using quantitative measurements over 20 years. The stream receives effluents from a U. S. Department of Energy (DOE) facility, but since 1985 these effluents have been greatly reduced, eliminated, or diluted as part of a substantial long-term pollution abatement program. The resulting changes in water quantity and quality led to a recovery of the fish communities, evidenced by significant changes in species richness, abundance (density and biomass), and community composition (e.g., number of fish species sensitive to stress). The fish community changes occurred over a spatial gradient (downstream from the headwater release zone nearest the DOE facility) and temporally, at multiple sampling locations in the stream. Changes in measured parameters were associated with specific remedial actions and the intervening steps within the recovery process are discussed with regard to changes in treatment processes.

Suggested Citation

  • Michael G. Ryon, 2011. "Recovery of Fish Communities in a Warm Water Stream Following Pollution Abatement," Environmental Management, Springer, vol. 47(6), pages 1096-1111, June.
    • Handle: RePEc:spr:envman:v:47:y:2011:i:6:d:10.1007_s00267-010-9596-x
    DOI: 10.1007/s00267-010-9596-x
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