Download or read book Freshwater Fish Biogeography in the Bering Glacier Region Alaska written by Heidi L. Weigner and published by . This book was released on 2012 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bering Glacier, Alaska, is Earth's largest surging glacier, with surges occurring approximately every 20-30 years since 1900. Surges and subsequent retreats lead to a dynamic environment for aquatic communities, as glacial ice over-rides landscapes and new habitats form during glacial retreat. Lands around Bering Glacier are administered by the State of Alaska and the U.S. Bureau of Land Management (BLM). Purposes of this study are to characterize fish communities and provide information relevant to their management for BLM. Given Bering Glacier's remoteness, little information exists regarding its fish communities. Fish were collected over five summer field seasons (2002-2006), with 10 fish species collected in 80 lakes and streams. Results indicate that Dolly Varden (Salvelinus malma), threespine stickleback (Gasterosteus aculeatus), prickly sculpin (Cottus asper), and coho salmon (Oncorhynchus kislitch) are first to colonize new habitat after glacial retreat. Ten locations with sympatric populations of anadromous and resident freshwater threespine stickleback were found. Geometric morphometrics and genetic analyses were conducted on these species pairs to test hypotheses regarding their formation. Possible origins include sympatric speciation, double invasion of anadromous fish, and independent colonization by resident freshwater fish from pre-existing lakes and streams along with anadromous fish. Body shape analyses of anadromous vs. resident freshwater stickleback supported the independent colonization hypothesis, because of a lack of body shape co-variation between groups, a lack of correlation of geometric morphometric variables with site age, and few fish with intermediate body shape at each site. Origin hypotheses were tested by use of the frequency of the Euro-North American Clade (ENAC) vs. the Trans North Pacific Clade (TNPC) in the mtDNA as well as sequence divergence of a portion of the mtDNA gene NADH2. A greater proportion of TN PC fish exist in resident freshwater populations at all sites, supporting the independent colonization hypothesis. The NADH2 sequence data did not help to clarify the origins. Future research at Bering Glacier should examine broader scale sequence divergence in genomes of stickleback and other colonizing fishes to advance the understanding of contemporary evolution and management implications in this newly formed aquatic landscape.
Download or read book Bering Glacier written by Robert Allan Shuchman and published by Geological Society of America. This book was released on 2010 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bering Glacier is the largest surging glacier in the world, having surged at least six times in the last 150 years. With the glacier advancing and retreating as much as 10 km over a surge cycle, it is one of the most physically and biologically dynamic places on Earth. This monograph presents the results of a comprehensive and diverse series of field studies and science investigations at Bering Glacier. The results reported are from a wide range of disciplines, including glaciology, geology, paleogeology, hydrology, limnology, oceanography, tectonics, geomorphology, geophysics, meteorology, remote sensing, climate change, anthropology, and ecological studies pertaining to vegetation, fish, and marine mammals. The compilation of these individual studies into a single publication allows for a more complete understanding of how the approximately 5,000 km2 Bering Glacier system plays a major role in the greater southeastern coastal region of Alaska and through its wastage, its impact on the circulation of the northeast Pacific Ocean and on the global sea level.
Download or read book Biogeography and Ecotoxicology of Freshwater Fishes of the Aleutian Archipelago Alaska written by Leah A. Kenney and published by . This book was released on 2011 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Freshwater Fishes of Alaska written by James Edwin Morrow and published by . This book was released on 1980 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists all known species.
Download or read book Freshwater Fishes of Alaska written by James Edwin Morrow and published by . This book was released on 1979 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Freshwater Fishes of Northwestern Canada and Alaska written by John Donald McPhail and published by . This book was released on 1970 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt: Systematic account of all known species, with notes on distribution, taxonomy, postglacial dispersal and biology of each.
Download or read book Alaska s Fish written by Robert H. Armstrong and published by . This book was released on 1996 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: ILLUSTRATED GUIDE TO ALASKAN FISH.
Download or read book Illustrated Keys to the Fresh water Fishes of Alaska written by James Edwin Morrow and published by . This book was released on 1974 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Winter Water Availability and Use Conflicts as Related to Fish and Wildlife in Arctic Alaska written by William J. Wilson and published by . This book was released on 1977 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fishes of Alaska written by Catherine W. Mecklenburg and published by Amer Fisheries Society. This book was released on 2002-01-01 with total page 1037 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Influence of Temperature on Freshwater Fishes written by Phyllis Weber Scannell and published by . This book was released on 1992 with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Checklist of the Freshwater Fishes of Alaska by Range and Location written by Howard Metsker and published by . This book was released on 1972 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Data on Fish Species from Bering Sea and Gulf of Alaska written by Karl Niggol and published by . This book was released on 1982 with total page 125 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Freshwater Fishes of Northen Canada and Alaska written by J. D.. Mc Phail and published by . This book was released on 1970 with total page 381 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Chemical Age written by Frank A. von Hippel and published by University of Chicago Press. This book was released on 2020-09-04 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: This sweeping history reveals how the use of chemicals has saved lives, destroyed species, and radically changed our planet: “Remarkable . . . highly recommended.” —Choice In The Chemical Age, ecologist Frank A. von Hippel explores humanity’s long and uneasy coexistence with pests, and how the battles to exterminate them have shaped our modern world. He also tells the captivating story of the scientists who waged war on famine and disease with chemistry. Beginning with the potato blight tragedy of the 1840s, which led scientists on an urgent mission to prevent famine using pesticides, von Hippel traces the history of pesticide use to the 1960s, when Rachel Carson’s Silent Spring revealed that those same chemicals were insidiously damaging our health and driving species toward extinction. Telling the story in vivid detail, von Hippel showcases the thrills—and complex consequences—of scientific discovery. He describes the creation of chemicals used to kill pests—and people. And, finally, he shows how scientists turned those wartime chemicals on the landscape at a massive scale, prompting the vital environmental movement that continues today.
Download or read book Fishes of the Salish Sea written by Theodore W. Pietsch and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fishes of the Salish Sea is the definitive guide to the identification and history of the marine and anadromous fishes of Puget Sound and the Straits of Georgia and Juan de Fuca. This comprehensive three-volume set, featuring striking illustrations of the Salish Sea's 260 fish species by noted illustrator Joseph Tomelleri, details the ecology and life history of each species and recounts the region's rich heritage of marine research and exploration. Beginning with jawless hagfishes and lampreys and ending with the distinctive Ocean Sunfish, leading scientists Theodore Wells Pietsch and James Orr present the taxa in phylogenetic order, based on classifications that reflect the most current scientific knowledge. Illustrated taxonomic keys facilitate fast and accurate species identification. These in-depth, thoroughly documented, and yet accessible volumes will prove invaluable to marine biologists and ecologists, natural resource managers, anglers, divers, students, and all who want to learn about, marvel over, and preserve the vibrant diversity of Salish Sea marine life. Comprehensive accounts of 260 fish species Brilliant color plates of all treated species Illustrated taxonomic keys for easy species identification In-depth history of Salish Sea research and exploration
