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RECORD NUMBER: 21 OF 57

OLS Field Name OLS Field Data
Main Title Evaluation of Sampling Strategies to Characterize Dissolved Oxygen Conditions in Northern Gulf of Mexico Estuaries.
Author Summers, J. K. ; Engle, V. D. ;
CORP Author Environmental Research Lab., Gulf Breeze, FL. ;Technical Resources, Inc., Gulf Breeze, FL.
Publisher c1993
Year Published 1993
Report Number EPA/600/J-93/071 ;CONTRIB-745;
Stock Number PB93-169050
Additional Subjects Estuaries ; Mexico Gulf ; Dissolved oxygen ; Water quality ; Sampling ; Environmental monitoring ; Concentration(Composition) ; Biological indicators ; Fishes ; Benthos ; Site surveys ; Water pollution effects ; Hypoxia ; Performance evaluation ; Reprints ;
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB93-169050 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 08/23/1993
Collation 13p
Abstract
Dissolved oxygen was continuously monitored in eight sites of northern Gulf of Mexico estuaries in August, 1990. Monte Carlo analyses on subsamples of the data were used to evaluate several commonly used monitoring strategies. Monitoring strategies which involve single point sampling of dissolved oxygen may often misclassify an estuary as having good water quality. In the case of shallow, often well-mixed estuaries that experience diurnal cycles, such monitoring often does not occur at night, during the time of lowest dissolved oxygen concentration. The authors' objective was to determine the minimum sampling effort required to correctly classify a site in terms of the observed frequency of hypoxia. Tests concluded that the most successful classification strategy used the minimum dissolved oxygen concentration from a continuously sampled 24-hour period. (Copyright (c) 199e Kluwer Academic Publishers.)