A Metric is a calculated term or enumeration representing some aspect of biological assemblage, function, or other measurable aspect and is a Characteristic of the Biota that changes in some predictable way with increased human influence. A multimetric approach involves combinations of metrics to provide an integrative assessment of the status of aquatic resources.
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A Metric is an attribute with empirical change in value along a gradient of human influence. (Karr, J.R., and E.W. Chu. 1997. Biological Monitoring and Assessment: Using MultiMetric Indexes Effectively. EPA 235-R97-001. University of Washington, Seattle)
List of books: Metric
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Metric is a A standard of measurement.

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