Journal
ENVIRONMENTAL POLLUTION
Volume 158, Issue 5, Pages 1435-1443Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2009.12.035
Keywords
Functional diversity; Biolog EcoPlate; Metabolic diversity; Substrate utilization pattern; Community-level physiological profile
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Funding
- University of Michigan-Dearborn
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The heterotrophic microbial communities of the Rouge River were tracked using Biolog Ecoplates to understand the metabolic diversity at different temporal and spatial scales, and potential link to river pollution. Site less impacted by anthrophogenic sources (site 1), showed markedly lower metabolic diversity. The only substrates that were utilized in the water samples were carbohydrates. Sites more impacted by anthrophogenic sources (sites 8 and 9) showed higher metabolic diversity. Higher functional diversity was linked to the physico-chemical and biological properties of the water samples (i.e. higher concentrations of DO, DOC, chlorophyll, and bacterial density). Biolog analysis was found to be useful in differentiating metabolic diversity between microbial communities; in determining factors that most influence the separation of communities; and in identifying which substrates were most utilized by the communities. It can also be used as an effective ecological indicator of changes in river function attributable to urbanization and pollution. (C) 2009 Elsevier Ltd. All rights reserved.
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