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RECORD NUMBER: 26 OF 230

OLS Field Name OLS Field Data
Main Title Community Photosynthesis and Respiration in Experimental Streams.
Author Sheldon, S. P. ; Taylor, M. K. ;
CORP Author Minnesota Univ., Minneapolis.;Environmental Research Lab.-Duluth, MN.
Year Published 1982
Report Number EPA-R-805678; EPA-600/J-82-409;
Stock Number PB84-138684
Additional Subjects Benthos ; Plankton ; Photosynthesis ; Respiration ; Streams ; Measurement ; Biological productivity ; Estimates ; Diurnal variations ; Oxygen ; Seasonal variations ; Aeration ; Reprints ; Macrophytes
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB84-138684 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 14p
Abstract
Changes in relative contribution to total stream photosynthetic and respiratory rates by various community components of an open channel stream were estimated. Rates of photosynthetic production of plankton, benthos and macrophytes (with associated epiphytes) were followed throught the growing season and compared with total estimates from a diurnal oxygen technique. Photosynthetic production by macrophytes was extremely high early in the growing season; but later declined and heterotrophic processes became predominant. In contrast, benthos production was initially low but became the primary source of photosynthesis later in the season. Plankton contributed little to stream photosynthesis and respiration.