| | 1: | | Title: | | | | | Volume/Number: | 2007 March | | | | Issuing Agency: | | | | | Description: | A comparison of benthic macroinvertebrate collection methods was conducted for Illinois Environmental Protection Agency (IEPA) involving the hand-pick method used until 2001 and the newly instituted 20-jab multi-habitat method. IEPA collected samples in the summer of 2001 using both methods at each site and data analysis showed little dissimilarity between the methods. Using the 20-jab method in lieu of the handpick method slightly increased (2.8%) the discrimination ability of the Stream Condition Index (SCI) proposed in 2000 (Tetra Tech 2000). The SCI developed as a preliminary index, based on Illinois historical data, included only richness metrics. This report was revised in March 2007, based on the November 2004 report of the same name. | | | | Date Created: | 03 30 2007 | | | | Agency ID: | | | | | ISL ID: | 000000042214 Original UID: 21731 FIRST WORD: Illinois | |
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