||Spatial distribution and temperature selection of fish near the thermal outfall of a power plant during fall, winter and spring /
Ross, M. J. ;
Siniff, D. B.
||Minnesota Univ., Minneapolis.;Environmental Research Lab.-Duluth, MN.
|| Environmental Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency ; Available to the public through the National Technical Information Service,
||EPA-600/3-80-009; EPA-68-03-2145, EPA-R-804997010
Fresh water fishes ;
Animal ecology ;
Thermal pollution ;
Cooling water ;
Animal migrations ;
Temperature measurement ;
Seasonal variations ;
Electric power plants ;
Radio tracking ;
Radio telemetry ;
||Region 9 Library/San Francisco,CA
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||xi, 117 pages : illustrations, maps ; 28 cm.
The movement patterns of 4 fish species: yellow perch (Perca flavescens), northern pike (Esox lucius), largemouth bass (Micropterus salmoides) and walleye (Stizostedion vitreum) were monitored by radio telemetry near the thermal discharge of a power plant (delta T 15C nominal). Fish movements relative to depth, temperature, center of the home range, discharge point, and release location are examined. Near thermally altered areas northern pike exhibited the greatest amount of movement followed by yellow perch, walleye and largemouth bass. Except for largemouth bass, thermal experience was found to be transitory. An overall mean winter temperature selection of 5.4C was determined for yellow perch. While only in the thermally altered area yellow perch had a slightly higher mean thermal experience, 6.3C. Yellow perch were not found to be attracted from the surrounding areas into the heated waters of the discharge bay during the cooler months.
"Study was conducted in cooperation with the University of Minnesota." "January 1980." Includes bibliographical references. Contract no. Contract Number: 68-03-2145 Grant no.