Dissolved oxygen conditions in northern Gulf of Mexico estuaries

Because deficient dissolved oxygen (DO) levels may have severe detrimental effects on estuarine and marine life, DO has been widely used as an indicator of ecological conditions by environmental monitoring programs. The U.S. EPA's Environmental Monitoring and Assessment Program for Estuaries (E...

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Bibliographic Details
Published in:Environmental monitoring and assessment 1999-07, Vol.57 (1), p.1-20
Main Authors: ENGLE, V. D, SUMMERS, J. K, MACAULEY, J. M
Format: Article
Language:English
Subjects:
Dissolved oxygen
Earth sciences
Earth, ocean, space
Ecological conditions
Environmental monitoring
Estuaries
Exact sciences and technology
Geochemistry
Hypoxia
Marine and continental quaternary
Mexico Gulf
Mineralogy
Silicates
Spatial distribution
Surficial geology
USA, Mexico Gulf
Water geochemistry
Water pollution
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Summary:Because deficient dissolved oxygen (DO) levels may have severe detrimental effects on estuarine and marine life, DO has been widely used as an indicator of ecological conditions by environmental monitoring programs. The U.S. EPA's Environmental Monitoring and Assessment Program for Estuaries (EMAP-E) monitored DO conditions in the estuaries of the Gulf of Mexico from 1991 to 1994. DO was measured in two ways: 1) instantaneous profiles from the surface to the bottom were taken during the day, and 2) continuous measurements were taken near the bottom at 15 min intervals for at least 12 h. This information was summarized to assess the spatial distribution and severity of DO conditions in these estuaries. Depending on the criteria used to define hypoxia (DO concentrations usually
ISSN:0167-6369
1573-2959
DOI:10.1023/A:1005980410752