Refinement, validation, and application of a benthic condition index for Northern Gulf of Mexico estuaries
Engle, V.D.; Summers, J.K. (1999). Refinement, validation, and application of a benthic condition index for Northern Gulf of Mexico estuaries. Estuaries 22(3): 624-635
In: Estuaries. The Estuarine Research Federation, Chesapeake Biological Laboratory: Columbia, S.C., etc.,. ISSN 0160-8347; e-ISSN 1559-2758, more
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| Keywords |
Aquatic communities > Benthos
Aquatic communities > Benthos > Zoobenthos
Aquatic organisms > Estuarine organisms
Assessments
Assessments
Indexing
Indexing
Indicators
Indicators > Pollution indicators
Information > Information processing > Documentation > Information processing > Indexing
Monitoring
Monitoring > Environmental monitoring
Monitoring > Environmental monitoring > Pollution monitoring
Population characteristics > Biomass
Properties > Physical properties > Mechanical properties > Flexibility
Species diversity
Taxa > Species > Indicator species
Water bodies > Coastal waters > Coastal landforms > Coastal inlets > Estuaries
Invertebrata
ASW, USA, Florida, Pensacola Bay [Marine Regions]; ASW, USA, Gulf Coast [Marine Regions]; ASW, USA, Louisiana [Marine Regions]
Marine/Coastal |
| Authors | | Top |
- Engle, V.D.
- Summers, J.K.
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| Abstract |
By applying discriminant analysis to benthic macroinvertebrate data, we have developed an indicator of benthic condition for northern Gulf of Mexico estuaries. The data used were collected by the United States Environmental Protection Agency's Environmental Monitoring and Assessment Program (EMAP) in the Louisianian Province from 1991 to 1994. This benthic index represents a linear combination of the following weighted parameters: the proportion of expected species diversity, the mean abundance of tubificid oligochaetes, the percent of total abundance represented by capitellid polychaetes, the percent of total abundance represented by bivalve mollusks, and the percent of total abundance represented by amphipods. We successfully validated and retrospectively applied the benthic index to all of the benthic data collected by EMAP in the Louisianian Province. This benthic index was also calculated for independent data collected from Pensacola Bay, Florida, in order to demonstrate its flexibility and applicability to different estuarine systems within the same biogeographic region. The benthic index is a useful and valid indicator of estuarine condition that is intended to provide environmental managers with a simple tool for assessing the health of benthic macroinvertebrate communities. |
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