Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Migration and Metabolism in a Stream Ecosystem.
Author Hal, Charles A. S. ;
CORP Author North Carolina Water Resources Research Inst., Raleigh.
Year Published 1971
Report Number Rept. no. ;49; DI-14-01-0001-1933; OWRR-B-007-NC; 09213,; B-007-NC(3)
Stock Number PB-200 264
Additional Subjects ( Aquatic biology ; Streams) ; ( Ecology ; Streams) ; ( Fishes ; Streams) ; Limnology ; Animal migrations ; Aquatic animals ; Metabolism ; Oxygen ; Respiration ; Photosynthesis ; Water quality ;
Library Call Number Additional Info Location Last
NTIS  PB-200 264 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 264p
Fish migration and total stream metabolism were monitored in New Hope Creek, N. C., from April, 1968 to June, 1970. Most of the 27 species had a consistent pattern of larger fish moving upstream and smaller fish moving downstream. In the spring of 1969, a daily average of 7 fish weighing a total of 1081 grams were caught moving upstream, and 17 fish, weighing a total of 472 grams, were caught moving downstream. The larger average size of the fish moving upstream resulted in a large transfer of fish mass upstream. Diurnal oxygen series were run to measure the metabolism of the aquatic community. Area values of metabolism were similar for different parts of the stream, but both production per volume and respiration per volume were much larger near the headwaters than farther downstream. Migration may allow populations to take advantage of such differences in productivity by maintaining young fish in areas of high productivity. An energy diagram was drawn comparing energies of insolation, currents, photosynthesis, respiration, fish populations, and migrations. Parts of this model were simulated on an analog computer. (WRSIC abstract)