A Summary of Aquatic Vegetation Monitoring at Selected Locations in Pools 4, 8, 13, and 26 and La Grange Pool of the Upper Mississippi River System PDF Download
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Author: Sara Rogers Publisher: ISBN: Category : Languages : en Pages : 35
Book Description
The Long Term Resource Monitoring Program (LTRMP) of the Upper Mississippi River System (UMRS) authorizes monitoring of submersed aquatic vegetation (SAV) in the river system. This report summarizes the 1991 effort of monitoring SAV along transects permanently established in vegetated locations in four navigation pools of the Upper Mississippi River and one navigation pool of the Illinois River. Seventeen species of submersed aquatic plants were found along transects in Pools 4, 8, 13, 26 and La Grange Pool. The highest number of submersed aquatic plant species found in any one pool was 16 in Pool 4 and the lowest number was 6 in La Grange Pool. Coon's tail (Ceratophyllum demersum) and sago pondweed (Potamogeton pectinatus) were the only two species found in every study pool during both spring and summer sampling. Decreases in pondweed species noticeably affected the number of transect sites with SAV in Pools 4 and 13. In Pool 8, nearly all species declined between sampling periods and the proportion of sites with SAV dropped to less than 10% by August, the most decline of any pool.
Author: Sara Rogers Publisher: ISBN: Category : Languages : en Pages : 35
Book Description
The Long Term Resource Monitoring Program (LTRMP) of the Upper Mississippi River System (UMRS) authorizes monitoring of submersed aquatic vegetation (SAV) in the river system. This report summarizes the 1991 effort of monitoring SAV along transects permanently established in vegetated locations in four navigation pools of the Upper Mississippi River and one navigation pool of the Illinois River. Seventeen species of submersed aquatic plants were found along transects in Pools 4, 8, 13, 26 and La Grange Pool. The highest number of submersed aquatic plant species found in any one pool was 16 in Pool 4 and the lowest number was 6 in La Grange Pool. Coon's tail (Ceratophyllum demersum) and sago pondweed (Potamogeton pectinatus) were the only two species found in every study pool during both spring and summer sampling. Decreases in pondweed species noticeably affected the number of transect sites with SAV in Pools 4 and 13. In Pool 8, nearly all species declined between sampling periods and the proportion of sites with SAV dropped to less than 10% by August, the most decline of any pool.
Author: Sara Rogers Publisher: ISBN: Category : Languages : en Pages : 35
Book Description
The Long Term Resource Monitoring Program (LTRMP) was authorized under the Water Resources Development Act of 1986 (Public Law 99-662) as an element of the U.S. Army Corps of Engineers Environmental Management Program. Thr LTRMP is being implemented by the Environmental Management Technical Center, a U.S. Geological Survey science center, in cooperation with the five Upper Mississippi River System (UMRS) States of Illinois, Iowa, Minnesota, Missouri, and Wisconsin. The U.S. Army Corps of Engineers provides guidance and has overall Program responsibility. The mode of operation and respective roles of the agencies are outlined in a 1988 Memorandum of Agreement. The UMRS encompasses the commercially navigable reaches of the Upper Mississippi River, as well as the Illinois River and navigable portions of the Kaskaskia, Black, St. Croix, and Minnesota Rivers. Congress has declared the UMRS to be both a nationally significant ecosystem and a nationally significant commercial navigation system. The mission of the LTRMP is to provide decision makers with information for maintaining the UMRS as a sustainable large river ecosystem given its multiple-use character. The long-term goals of the Program are to understand the system, determine resource trends and effects, develop management alternatives, manage information, and develop useful products.
Author: Sara Rogers Publisher: ISBN: Category : Languages : en Pages : 41
Book Description
Aquatic vegetation of the Upper Mississippi River System is monitored as part of the Long Term Resource Monitoring Program. This report summarizes the 1992 effort of monitoring submersed aquatic vegetation (SAV) along transects permanently established in vegetated locations within four navigation pools of the Upper Mississippi River and one navigation pool of the Illinois River. More species of submersed aquatic macrophytes were found along transects in lower Pool 4 than in any other reach. La Grange Pool and Pool 26 transects had the fewest species. Across all pools, sago pondweed (Potamogeton pectinatus) and coon's tail (Ceratophyllum demersum) were the species most frequently found. Several species of SAV were seasonally dynamic at the transect locations, with changes in frequencies especially common among sago and curly (P. crispus), and species of narrow-leaved pondweeds. Many of the species in Pools 5 and 13 increased in frequencies between sampling periods, resulting in a significantly higher proportion of sites with SAV by the summer sampling period. Although frequencies of individual species changed during the growing season in Pools 4 and 26 and La Grange Pool, the proportion of sites with SAV remained stable. Community diversity within each pool was similar between sampling periods except in Pool 13 where diversity increased at most locations during the season.
Author: Sara Rogers Publisher: ISBN: Category : Languages : en Pages : 35
Book Description
Aquatic vegetation of the Upper Mississippi River System is monitored as part of the long Term Resource Monitoring Program. This report summarizes the 1994 effort of monitoring submersed aquatic vegetation (SAV) along transects permanently established in vegetated locations within four navigation pools of the Upper Mississippi River and one navigation pool of the Illinois River. A total of 17 species of SAV were found along transects during the 1994 season. Several additional species were found during informal surveys. More species of submersed aquatic macrophytes were found along transects in lower Pool 4 than in any other reach. Across all pools, sago pondweed (Potamogeton pectinatus) was the species most frequently found. Several species of SAV were seasonally dynamic at the transect locations, with changes in frequencies especially common among sago pondweed and curly pondweeds (P. crispus). The proportion of sites with SAV decreased significantly in Pool 4, increased in Pool 13, but did not change within other pools. Pool 26, however, was not sampled during the summer sampling season because the transect locations were dewatered to promote growth of annual plant species. Mean depths of sites with SAV ranged from 0.4 m in Pool 26 during spring sampling to 1.5 m in La Grange Pool during spring and summer sampling.
Author: Sara Rogers
Author: Sara Rogers
Author: Sara Rogers
Author: Sara Rogers
Author: Sara Rogers
Author: Sara Rogers
Author: Sara Rogers
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