Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Tidal flats in estuarine water quality analysis /
Author Bella, David A.
CORP Author Oregon State Univ., Corvallis. Dept. of Civil Engineering.;National Environmental Research Center, Corvallis, Oreg.
Publisher National Environmental Research Center, Office of Research and Development ; For sale by the National Technical Information Service,
Year Published 1975
Report Number EPA/660/3-75/025; EPA-16070-DGO
Stock Number PB-248 196
Subjects Water quality management. ; Tidal flats.
Additional Subjects Stream pollution ; Tidelands ; Yaquina Estuary ; Sediments ; Benthos ; Hydraulic models ; Mathematical models ; Concentration(Composition) ; Sulfide minerals ; Toxicity ; Water quality ; Chemical reactions ; Inorganic sulfates ; Carbon ; Oxygen ; Hydrogen sulfide ; Iron sulfate ; Mineral deposits ; Food chains ; Mixing ; Life cycles ; Systems engineering ; Oregon ; Estuaries ; Mud flats ; Ecosystems ; Estuarine environment
Library Call Number Additional Info Location Last
NTIS  PB-248 196 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 01/01/1988
Collation 186 pages : illustrations ; 26 cm.
The initial phases of the study involved mixing processes and tidal hydraulics; however, the study emphasis shifted to estuarine benthic systems as the importance of these systems became more apparent. A conceptual model of estuarine benthic systems was developed and a classification system of estuarine benthic deposits which is based on the availability of hydrogen acceptors and reactive iron was developed. Field studies demonstrated that estuarine sediments and overlying wastes could contain significant concentrations of free sulfides which are toxic to a variety of organisms. Field studies of benthic oxygen uptake and benthic sulfide release were conducted. Water quality profiles within the deposits also were determined. A number of laboratory studies were conducted to determine the rate of sulfate reduction. Results from experiments using extracts from benthic deposits and algal mats demonstrated a close relationship between the rate of sulfate reduction and the sulfate and soluble organic carbon concentrations. A general systems model of estuarine benthic systems was developed. A variety of activities which could contribute to significant environmental changes with estuarine benthic systems were identified.