Upper Midwest Environmental Sciences Center
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LTRMP Reports
Summary
of Monitoring Findings for Fiscal Year 2004
Figures| Figure 17. | Mean fingernail clam (Sphaeriidae) abundance in the Upper Mississippi River System from 1993 to 2004. The Open River Reach was dropped from the macroinvertebrate monitoring design in 2001. Pools 4 and 26 of the Upper Mississippi River and La Grange Pool of the Illinois River were not sampled in 2003. |
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U.S. Department of the Interior |
U.S. Geological Survey
URL: http://www.umesc.usgs.gov/reports_publications/ltrmp/2004/summary_findings/figure17.html
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Page Last Modified:
October 2, 2007
