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View ESML Data MapDocument: Invertebrate Status Index (Doc-407)
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Document ID
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| 407 |
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Authors
| Cuffney, Tom |
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Year
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2003 |
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Title
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Invertebrate Status Index |
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Document Type
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Government Document |
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Place Published
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Raleigh, NC |
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Publisher
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USGS |
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Pages
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22pp |
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Abstract
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The Invertebrate Status Index is a multimetric index that was derived for the NAWQA Program to provide a simple national characterization of benthic invertebrate communities. This index—referred to here as the National Invertebrate Community Ranking Index (NICRI)—provides a simple method of placing community conditions within the context of all sites sampled by the NAWQA Program. The multimetric index approach is the most commonly used method of characterizing biological conditions within the U.S. (Barbour and others, 1999). Using this approach, communities may be compared by considering how individual metrics vary among sites or by combining individual metrics into a single composite (i.e., multimetric) index and examining how this single index varies among sites. Combining metrics into a single multimetric index simplifies the presentation of results (Barbour and others, 1999) and minimizes weaknesses that may be associated with individual metrics (Ohio EPA, 1987a,b). |
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https://water.usgs.gov/nawqa/sumr/bioind/invertebrates.pdf |
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EMs citing this document as a source
| EM-848 |
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EMs citing this document for a related EM
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| EM-850 |
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EMs citing this document for a compared EM
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| None |