Upper Midwest Environmental Sciences Center
Summary
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