Upper Midwest Environmental Sciences Center

Summary of Monitoring Findings for Fiscal Year 2000: Figures
folder.gifSummary of Monitoring Findings for Fiscal Year 2000

Figures

1. Long Term Resource Monitoring Program study areas and field stations.
2. Average daily discharge of the Mississippi River at St. Louis for the period of record (68 years) and for the first 9 months of 2000.
3. Dissolved oxygen concentration and combined snow and ice depth during winter stratified random sampling in Pools 4, 8, and 13.
4. Nitrate plus nitrite concentrations during fall stratified random sampling and October mean discharge at Dam 8 in the Upper Mississippi River.
5. Nitrate plus nitrite (mg/L) concentrations in Pool 26 and Open River during summer stratified random sampling.
6. Summer chlorophyll a (µg/L) concentrations in Pool 26 during stratified random sampling.
7. Total catches of select exotic species from Pool 26 and Open River Reach, Mississippi River; and La Grange Pool, Illinois River; 1993–2000.
8. Percentage frequency of occurrence of submersed aquatic vegetation from stratified random sampling in areas 2.5 m deep in study pools of the Long Term Resource Monitoring Program.
9. Estimated mean density of mayflies (Ephemeroptera; number m-2) by study area, weighted by area of strata from 1993 to 2000, Upper Mississippi River System.
10. Estimated mean density of fingernail clams (Sphaeriidae; numbers m-2) by study area, weighted by areas of strata from 1993 to 2000, Upper Mississippi River System.
11. Estimated mean density of midges (Chironomidae; number m-2) by study area, weighted by areas of strata from 1993 to 2000, Upper Mississippi River System.
12. Estimated mean density of zebra mussels (Dreissena polymorpha; number m-2) by study area, weighted by areas of strata from 1995 to 2000, Upper Mississippi River System.

Page Last Modified: April 17, 2018