Recovery of Fish Communities in a Warm Water Stream Following Pollution Abatement |
| |
Authors: | Email author" target="_blank">Michael?G?RyonEmail author |
| |
Institution: | (1) Environmental Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA |
| |
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. |
| |
Keywords: | |
本文献已被 PubMed SpringerLink 等数据库收录! |
|