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Methods for collecting benthic invertebrate samples as part of the National Water-Quality Assessment Program

Open-File Report 93-406

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Abstract

Benthic invertebrate communities are evaluated as part of the ecological survey component of the U.S. Geological Survey's National Water-Quality Assessment Program. These biological data are collected along with physical and chemical data to assess water-quality conditions and to develop an understanding of the factors that affect water-quality conditions locally, regionally, and nationally. The objectives of benthic invertebrate community characterizations are to (1) develop for each site a list of tax a within the associated stream reach and (2) determine the structure of benthic invertebrate communities within selected habitats of that reach. A nationally consistent approach is used to achieve these objectives. This approach provides guidance on site, reach, and habitat selection and methods and equipment for qualitative multihabitat sampling and semi-quantitative single habitat sampling. Appropriate quality-assurance and quality-control guidelines are used to maximize the ability to analyze data within and among study units.

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Methods for collecting benthic invertebrate samples as part of the National Water-Quality Assessment Program
Series title:
Open-File Report
Series number:
93-406
Edition:
-
Year Published:
1993
Language:
ENGLISH
Publisher:
U.S. Geological Survey ; U.S.G.S. Earth Science Information Center, Open-File Reports Section [distributor],
Description:
v, 66 p. :ill. ;28 cm.