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RECORD NUMBER: 44 OF 147

OLS Field Name OLS Field Data
Main Title Effect of Thermal Inputs on the Populations of Fish and Macroinvertebrates in the Wabash River.
Author Gammo, J. R. ;
CORP Author DePauw Univ., Greencastle, Ind.
Year Published 1973
Report Number DI-14-01-0001-3279; OWRR-B-031-IND; 14869,; B-031-IND(4)
Stock Number PB-224 056
Additional Subjects ( Fishes ; Water pollution) ; ( Invertebrates ; Water pollution) ; ( Wabash River ; Fishes) ; Distribution(Property) ; Electric power plants ; Temperature measurement ; Animal migrations ; Reproduction(Biology) ; Animal behavior ; Abundance ; Sampling ; Effluents ; Adaptation ; Indiana ; Water temperature ; Thermal pollution
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB-224 056 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 118p
Abstract
The distribution of fish and macroinvertebrate populations near two electrical generating stations located on the Wabash River were examined during the summer and early fall for six years. Segments of the river were subdivided into zones corresponding to the imposed thermal conditions and to different kinds of habitat. Fish responded readily to changing thermal conditions and concentrated in areas of the river which provided temperature close to their optimum. Although most species reacted behaviorally to the altered thermal conditions, only two groups appeared to be affected permanently as populations. Flathead catfish (pylodictis Olivaris) responded to higher temperatures with enhanced reproductive success which increased population density two or three times. Redhorse (Moxostoma erythrurum and M. breviceps) are more thermally sensitive and population densities are likely to be reduced with higher temperatures. Complicating factors include the fact that several species of fish, including redhorse and sauger (Stizostedion canadense), appear to rely upon recruitment from tributaries to sustain the mainstem populations. Long-term changes in the density of other species were not detected.