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Year 1999 Findings for the Long Term Resource Monitoring Program| Figure 7. | Estimated mean densities of mayflies in each study area of the Long Term Resource Monitoring Program, weighted by area of strata. Bars indicate ± 1 standard error. |
U.S. Department of the Interior |
U.S. Geological Survey
URL: http://www.umesc.usgs.gov/reports_publications/ltrmp/1999/summary_findings/figure07.html
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Page Last Modified:
October 2, 2007
