Record Display for the EPA National Library Catalog

RECORD NUMBER: 35 OF 169

OLS Field Name OLS Field Data
Main Title Diel Flux of Dissolved Carbohydrate in a Salt Marsh and a Simulated Estuarine Ecosystem.
Author Burney, C. M. ; Johnson, K. M. ; Sieburth, J. McN. ;
CORP Author Rhode Island Univ., Kingston.;Environmental Research Lab., Narragansett, RI.
Year Published 1982
Report Number EPA-CR-80-7795; ERLN-X31 ; EPA-600/J-81-533
Stock Number PB82-186388
Additional Subjects Carbohydrates ; Polysaccharides ; Monosaccharides ; Zooplankton ; Concentration(Composition) ; Diurnal variations ; Comparison ; Organic compounds ; Carbon ; Chlorophylls ; pH ; Oxygen ; Solar radiation ; Dissolved gases ; Substrates ; Bacteria ; Estuaries ; Reprints ; Salt marshes ; Ecosystems
Holdings
Library Call Number Additional Info Location Last
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Status
NTIS  PB82-186388 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 15p
Abstract
The concentrations of total dissolved carbohydrate (TCHO), monosaccharide (MCHO) and polysaccharide (PCHO) were followed over a total of ten diel cycles in a salt marsh and a 13 cu m seawater tank simulating an estuarine ecosystem. Their patterns are compared to those for total dissolved organic carbon (DOC), sigma CO2, pH, O2, chlorophyll a, phaeopigments and solar radiation. During 5 of the 6 marsh studies, PCHO underwent periods of sustained accumulation starting in the late morning or early afternoon and continuing into the early evening. These periods possibly represent release of recently synthesyzed PCHO from phototrophs. Similar patterns were not found in the tank although direct associations between TCHO and phaeopigment dynamics suggest that zooplankton excretion was an important source of dissolved carbohydrate.