Upper Midwest Environmental Sciences Center
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Summary of Monitoring Findings for Fiscal Year 2000
Figures| Figure 3. | Dissolved oxygen concentration (bold) and combined snow and ice depth during winter stratified random sampling in Pools 4, 8, and 13. The years correspond to the start of the winter season rather than the sampling date. Because ice and snow reduce light penetration and oxygen production under the ice, these two patterns tend to be mirror images. There have been statistically significant trends in both oxygen concentration and snow and ice cover since winter of 1995–1996. |
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U.S. Department of the Interior |
U.S. Geological Survey
URL: http://www.umesc.usgs.gov/reports_publications/ltrmp/2000/summary_findings/figure03.html
Page Contact Information: Contacting the Upper Midwest Environmental Sciences Center
Page Last Modified:
October 2, 2007
