Download or read book Community Structure of Freshwater Mussels Bivalvia Unionidae in Coastal Plain Streams of the Southeastern United States written by Jayne Brim Box and published by . This book was released on 1999 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Community Structure of Freshwater Mussels Bivalvia Unionidae in Coastal Plain Streams of the Southeastern United States written by Jayne Brim Box and published by . This book was released on 1999 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dissertation Abstracts International written by and published by . This book was released on 2000 with total page 956 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Freshwater Mussels Bivalvia Unionidae of the Harpeth River Drainage and the Upper and Middle Duck River Tributaries Tennessee written by Kristin Leigh Irwin and published by . This book was released on 2018 with total page 139 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Cumberland and Tennessee River drainages harbor high diversity and endemism of freshwater mussels. The faunas of the Harpeth River drainage and Duck River tributaries have been disproportionally understudied relative to other Cumberlandian streams. Forty-two sites on 23 tributaries in the Harpeth River drainage and a 21-kilometer reach of the main channel were assessed qualitatively for freshwater mussels. Relic shells of four species were observed in eight sites on four of the tributaries. Twenty species were observed in the main channel including the discovery of a new Harpeth River drainage record: Simsponaias ambigua. Catch per unit effort (CPUE) ranged from 0.0 to 32.0 mussels/h. Lampsilis fasciola and Potamilus alatus were the most abundant species. Mussel populations were fragmented and all species exhibited primarily large size-classes. Eighty-three sites on 37 tributaries in the upper and middle Duck River drainage were sampled qualitatively. Nineteen species were observed and 12 were collected live or fresh dead, and CPUE ranged from 0.0 to 58.0 mussels/h. Villosa vanuxemensis and Villosa taeniata were the most abundant and widespread species observed. Live mussels were found in only five tributaries, although mussels historically occurred in 17 of the sampled streams. Length frequency analysis indicated recent recruitment for four species in Big Rock Creek. Results of canonical correspondence analysis for both drainages revealed no association between environmental variables and mussel community structure (live and fresh dead individuals combined), likely a result of low densities. Two sites on Big Rock Creek in the Duck River drainage were sampled quantitatively using 0.25-m2 quadrats. Densities were 0.33 and 1.27 mussels/0.25m2 and species richness ranged from four to five. Quantitative sampling indicated that qualitative timed searches may be sufficient for detecting recruitment in small streams. Anthropogenic alteration has resulted in extensive loss of freshwater mussel habitat, leading to local extirpations and a reduction of diversity and abundance in both watersheds.

Download or read book Freshwater Mussels in a California North Coast Range River written by Kurt M. Cuffey and published by . This book was released on 2002 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Freshwater Mussels in California Coast Range Rivers written by Jeanette Kay Howard and published by . This book was released on 2004 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Analysis of Freshwater Mussels Unionidae in the Upper Ohio River Near Huntington West Virginia written by Andrew C. Miller and published by . This book was released on 1995 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Freshwater Mussels Bivalvia Unionidae of the Fox River Basin Illinois and Wisconsin written by and published by . This book was released on 2004 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Habitat Use and Community Structure of Unionid Mussels in Three Lake Erie Tributaries written by Jeffrey D. Grabarkiewicz and published by . This book was released on 2012 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nearly 300 species of freshwater mussels (Bivalvia: Superfamily Unionoidea) have been documented in the United States. Unfortunately, this diversity is in peril, with 76 species currently listed as threatened or endangered under the Endangered Species Act. This research established unionid population estimates and habitat use within six reaches of three Western Lake Erie tributaries: the Blanchard River, Swan Creek, and Beaver Creek. Particular emphasis was placed on the federally endangered Rayed Bean (Villosa fabalis). Quantitative sampling documented 22 live unionid species and 1,197 live individuals across all reaches and streams. Evidence of recent recruitment was documented for 10 species and size class diversity was found for 15 species. Unionid density and species richness were highest in the Upper Blanchard with a mean reach density of 4.48 unionids per m2 and 15 live species. Rayed Bean (V. fabalis) were estimated at 0.29 per m2 in the Upper Blanchard and 0.13 per m2 in Middle Swan Creek. Size class diversity for V. fabalis was found in both reaches, with many young individuals (

Download or read book Current Distributional Information on Freshwater Mussels family Unionidae in Mississippi National Forests written by Wendell R. Haag and published by . This book was released on 1995 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Analysis of Freshwater Mussels Unionidae in the Lower Ohio River at Two Beds Near Olmsted Illinois written by Barry S. Payne and published by . This book was released on 1994 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Population Genetic Structure of Quadrula Aurea Bivalvia Unionidae A Threatened Freshwater Mussel in Central Texas written by Jeffrey A. Mabe and published by . This book was released on 2018 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: The anthropogenic alteration of riverine ecosystems has led to declines in the abundance and diversity of freshwater mussels (Bivalvia: Unionoida) worldwide. Central Texas is home to a diverse freshwater mussel fauna including three candidates for federal listing under the Endangered Species Act. Surveys conducted over the last few decades suggest many of the endemic freshwater mussel species in Texas exist in small isolated populations that may be vulnerable to the deleterious effects of genetic diversity loss. Microsatellite primers from two closely related species were used to identify a set of genetic markers that functioned in the Golden Orb (Quadrula aurea). Microsatellite markers were then applied to document the population genetic structure of Q. aurea within and among three connected river drainages in southeastern Texas. Gene flow within existing Q. aurea populations appears high indicating little potential for genetic issues stemming from isolation and inbreeding. Two weakly divergent admixed populations were identified occupying the San Antonio and Guadalupe/San Marcos rivers. Population genetic structure was related to river basin affiliation, but results for environmental factors were unresolved. Current effective population size estimates are large for the Guadalupe/San Marcos drainage and moderately large for the San Antonio drainage and there is no clear genetic evidence of contemporary population declines. Transport in the glochidial phase by a highly mobile host fish, the channel catfish (Ictalurus punctatus), may provide a mechanism for maintaining connectivity among spatially discrete mussel beds and deserves further study. Information on the occurrence and habitat associations of Q. aurea and two other threatened freshwater mussel species was documented. Quantification of the population genetic structure for Q. aurea provides important information needed for the management of this species, a baseline for understanding future changes, and insight into the factors that shape the population genetic structure of other threatened unionids in Texas.

Download or read book A Survey of the Freshwater Mussels Bivalvia Unionidae of the Sangamon River Basin Illinois written by Robert W. Schanzle and published by . This book was released on 1991 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Analysis of Freshwater Mussels Unionidae in the Quiver River and Bogue Phalia Mississippi 1994 95 written by Andrew C. Miller and published by . This book was released on 1997 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book North American Freshwater Mussels written by Wendell R. Haag and published by Cambridge University Press. This book was released on 2012-08-27 with total page 523 pages. Available in PDF, EPUB and Kindle. Book excerpt: Synthesizes the ecology and natural history of North American freshwater mussels for scientists, natural resource professionals, students and natural history enthusiasts.

Download or read book Multi scale Analysis of Unionid Freshwater Mussel Community Structure in the Upper Tennessee River Basin written by Brenda Rashleigh and published by . This book was released on 1998 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ecology and Evolution of the Freshwater Mussels Unionoida written by G. Bauer and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: All those who think that bivalves are boring are in the best company. Karl von Frisch is reported to have turned the pages more quickly in texts where bivalves were treated because, according to him, they literally lack any behaviour. The fact that they can filtrate huge amounts of water, burrow into the sedi ment, actively swim, drill holes into rocks and boats or detect shadows with the aid of pretty blue eyes located on the rim of their mantle obviously left v. Frisch unimpressed. Why, then, a book on the large freshwater mussels (Naiads or Unionoida), which on first sight are much less spectacular than the marine ones? The main reason is that they are keepers of secrets which they reveal only on close and careful inspection. This is not only true for the pearls some species produce and which over centuries have contributed to the treasures of bishops and kings, but particularly for their ecology: their life cycles are linked with those of fishes, some can occur in incredible densities and some can live for more than 100 years. Thus, the presence or absence of naiads in a lake or stream has manifold implications.