Spatial and Temporal Distribution of Fingernail Clam (Musculium Transversum) Populations in the Upper Mississippi River PDF Download
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Author: Donna Marie Melby Wilson
Publisher:
ISBN:
Category : Sphaeriidae (Mollusks)
Languages : en
Pages : 350
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Book Description
I analyzed temporal trends in populations of the fingernail clam Musculium transversum to validate recent anecdotal observations of reductions in their abundance in the upper Mississippi River. Sufficient historical data (1973-1990) on densities of fingernail clams were obtained from regional scientists and published literature for eight navigational pools. Historical data were augmented with field data collected in 1991. Significant declines in fingernail clam populations were evident in six of the eight pools examined (Pools 2, 5, 7, 8, 9 and 19; Mann-Kendall test; p
Author: Donna Marie Melby Wilson
Publisher:
ISBN:
Category : Sphaeriidae (Mollusks)
Languages : en
Pages : 350
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Book Description
I analyzed temporal trends in populations of the fingernail clam Musculium transversum to validate recent anecdotal observations of reductions in their abundance in the upper Mississippi River. Sufficient historical data (1973-1990) on densities of fingernail clams were obtained from regional scientists and published literature for eight navigational pools. Historical data were augmented with field data collected in 1991. Significant declines in fingernail clam populations were evident in six of the eight pools examined (Pools 2, 5, 7, 8, 9 and 19; Mann-Kendall test; p
Author: Carl M. Thompson
Publisher:
ISBN:
Category : Endangered species
Languages : en
Pages : 36
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Author: Randy William Burkhardt
Publisher:
ISBN:
Category : Clams
Languages : en
Pages : 0
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Book Description
Fingernail clams (Sphaeriidae) are important food sources for fish and migrating waterfowl in the Upper Mississippi River (UMR). Historically, fingernail clam densities ranged from 1,000 - 10,000 m-2 (per square meter) in parts of the UMR. Recent studies indicate that fingernail clam populations may be on the decline. In 1975, lower Pool 8 had fingernail clam densities as high as 2,400 m-2. More recent sampling (yearly since 1992) conducted by personnel from the Long Term Resource Monitoring Program, the U.S. Fish and Wildlife Service, and the Wisconsin Department of Natural Resources have shown fingernail clam densities averaging
Author: Randy William Burkhardt
Publisher:
ISBN:
Category : Clams
Languages : en
Pages : 1
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Book Description
Fingernail clams (Sphaeriidae) are important food sources for fish and migrating waterfowl in the Upper Mississippi River (UMR). Historically, fingernail clam densities ranged from 1,000 - 10,000 m-2 (per square meter) in parts of the UMR. Recent studies indicate that fingernail clam populations may be on the decline. In 1975, lower Pool 8 had fingernail clam densities as high as 2,400 m-2. More recent sampling (yearly since 1992) conducted by personnel from the Long Term Resource Monitoring Program, the U.S. Fish and Wildlife Service, and the Wisconsin Department of Natural Resources have shown fingernail clam densities averaging
Author:
Publisher:
ISBN:
Category : Ecology
Languages : en
Pages : 764
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Book Description
Coverage: 1982- current; updated: monthly. This database covers current ecology research across a wide range of disciplines, reflecting recent advances in light of growing evidence regarding global environmental change and destruction. Major ares of subject coverage include: Algae/lichens, Animals, Annelids, Aquatic ecosystems, Arachnids, Arid zones, Birds, Brackish water, Bryophytes/pteridophytes, Coastal ecosystems, Conifers, Conservation, Control, Crustaceans, Ecosyst em studies, Fungi, Grasses, Grasslands, High altitude environments, Human ecology, Insects, Legumes, Mammals, Management, Microorganisms, Molluscs, Nematodes, Paleo-ecology, Plants, Pollution studies, Reptiles, River basins, Soil, TAiga/tundra, Terrestrial ecosystems, Vertebrates, Wetlands, Woodlands.
Author:
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ISBN:
Category : Illinois River (Ill.)
Languages : en
Pages : 116
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Author:
Publisher:
ISBN:
Category : Mississippi River Valley
Languages : en
Pages : 28
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Author: William F. Gale
Publisher:
ISBN:
Category : Clams
Languages : en
Pages : 468
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Book Description
Author: Jennifer S. Sauer
Publisher:
ISBN:
Category : Benthic animals
Languages : en
Pages : 0
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Book Description
The most widespread annual collections of benthic (bottom dwelling) macroinvertebrates in the Upper Mississippi River System (UMRS) are now being made as part of the Long Term Resource Monitoring Program (LTRMP). Long-term monitoring is necessary to better understand the conditions needed to support viable macroinvertebrate populations at levels adequate to sustain native fish and migrating waterfowl. In 1992, the long-term monitoring of select taxa began in Pools 4, 8, 13, 26 and the Open River Reach of the Upper Mississippi River and in La Grange Pool of the Illinois River. Mayflies (Ephemeroptera), fingernail clams (Sphaeriidae), and Asiatic clams (Corbicula sp.) were first selected for sampling, followed by midges (Chironomidae) in 1993, and zebra mussels (Dreissenapolymorpha) in 1995.
Author: Brian Lee Sloss
Publisher:
ISBN:
Category : Sphaeriidae (Mollusks)
Languages : en
Pages : 76
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Book Description
