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A Phenotypic Comparison Of Thirty Eight Steelhead Oncorhynchus Mykiss Populations From Coastal Oregon
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Book Synopsis A Phenotypic Comparison of Thirty-eight Steelhead (Oncorhynchus Mykiss) Populations from Coastal Oregon by : Keith Martin Hatch
Download or read book A Phenotypic Comparison of Thirty-eight Steelhead (Oncorhynchus Mykiss) Populations from Coastal Oregon written by Keith Martin Hatch and published by . This book was released on 1990 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: An aspect of the genetic structure of coastal Oregon steelhead was explored and found to gradually change in a north to south pattern for the allelic frequencies of several enzymes. Isocitrate dehydrogenase and superoxide dehydrogenase were the clearest examples of this pattern of variation. This pattern was most evident in populations from river basins larger than 350 km2. The area south of the Coos River was marked by a transition in the increase of at least four rare alleles, most notably variants of phosphoglucose isomerase 2 and malate dehydrogenase 3-4. Populations from the largest (2000 km2) basins had on average 10% more variants of the ME 3 common enzyme than did populations from the smallest (200 km2) basins. The genetic distance between the Nehalem hatchery stock and neighboring wild stocks appears to have narrowed since the reintroduction of wild fish to the hatchery. In the decade since the last major electrophoretic work on coastal steelhead, most populations seemed little changed; however shifts in several isozyme frequencies were noted in populations from two Rogue River tributaries and the Elk River. The Bandon Hatchery stock persisted in showing large departures from coastwide trends for many alleles.
Book Synopsis Status Review of West Coast Steelhead from Washington, Idaho, Oregon, and California by : Peggy J. Busby
Download or read book Status Review of West Coast Steelhead from Washington, Idaho, Oregon, and California written by Peggy J. Busby and published by . This book was released on 1996 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Integrating Ecology and Evolution in a Spatial Context by : Jonathan Silvertown
Download or read book Integrating Ecology and Evolution in a Spatial Context written by Jonathan Silvertown and published by Cambridge University Press. This book was released on 2001-08 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt: Leading population biologists examine ecological and evolutionary issues in the context of space.
Book Synopsis Status Review for Klamath Mountains Province Steelhead by : Peggy J. Busby
Download or read book Status Review for Klamath Mountains Province Steelhead written by Peggy J. Busby and published by . This book was released on 1994 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book River Biota written by Peter P. Calow and published by John Wiley & Sons. This book was released on 2009-07-08 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: As with all ecosystems, river systems involve a complex interaction of a rich diversity of micro-organisms, plants and animals with their physical and chemical environment. The river habitat presents unique problems for organisms exposed to unidirectional currents, seasonal variation in flow, and disturbance due to pollution and other human interference. The book starts with a description of the taxa, their adaptations and their ecologies, followed by chapters describing the ecosystem processes in terms of trophic interactions and the key production processes related to photosynthesis and decomposition. A major chapter then considers the principles, practices and problems associated with making reliable observations on river organisms, leading to final chapters investigating how river biota are impacted by human activity and how, in turn, they can be used as indicators of these effects in river-management programmes.
Book Synopsis Adaptive Naturalization of Steelhead (Oncorhynchus Mykiss) Populations from Northern Lake Superior Tributaries by : Peter Arthur Addison
Download or read book Adaptive Naturalization of Steelhead (Oncorhynchus Mykiss) Populations from Northern Lake Superior Tributaries written by Peter Arthur Addison and published by . This book was released on 2007 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: Complementary life-history and genetic diversity (microsatellite DNA loci) were used to assess potential sources of extant phenotypic variation of eight naturalized steelhead populations from northern Lake Superior tributaries. Supplemental stocking subsequent to colonization, which occurred by 1920, has been very limited, thereby providing opportunities for genetic and phenotypic divergence. Populations exhibited high genetic diversity and similar allele size ranges, indicating a highly diverse common ancestor colonized the area. Furthermore, significant hierarchical divergence existed among populations. Five life-history parameters that are used to distinguish between native stocks of steelhead varied significantly among the study populations. Life-history variation was inconsistent with genetic variation and consistent with geographic distance among populations. Assuming that differences among tributary biophysical environments are positively associated with geographic distance these results support the hypothesis that reported life-history variation is the result natural processes (phenotypic plasticity, adaptation, drift and migration) and not contingent upon ancestry.
Book Synopsis Rivers Handbook, Volume 1 by : Peter P. Calow
Download or read book Rivers Handbook, Volume 1 written by Peter P. Calow and published by Wiley-Blackwell. This book was released on 1992-11-10 with total page 554 pages. Available in PDF, EPUB and Kindle. Book excerpt: Assesses and reports on the scientific and ecological principles that are relevant for developing an integrated approach to rivers management. Ecosystems, properties and processes of sub-temperate, temperate, large alluvial tropical, semi-arid and mountain rivers are described.
Book Synopsis Preliminary Assessment of Genetic Conservation Management Units for Washington Steelhead by : Steven A. Leider
Download or read book Preliminary Assessment of Genetic Conservation Management Units for Washington Steelhead written by Steven A. Leider and published by . This book was released on 1994 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evolution and the Aquatic Ecosystem by : Jennifer L. Nielsen
Download or read book Evolution and the Aquatic Ecosystem written by Jennifer L. Nielsen and published by . This book was released on 1995 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides empirical, theoretical, and philosophical insights into the evolution of aquatic ecosystems from perspectives that range from molecular and cellular biology to ecology and behavior. The 36 papers and panel discussions were reviewed across disciplines and presented at a May 1994 conference in Monterey, California. They cover general perspectives, morphology and systematics, behavior and life history, genetics, and ecosystems and habitat.
Book Synopsis Pacific Salmon & their Ecosystems by : Deanna J. Stouder
Download or read book Pacific Salmon & their Ecosystems written by Deanna J. Stouder and published by Springer Science & Business Media. This book was released on 2012-02-02 with total page 681 pages. Available in PDF, EPUB and Kindle. Book excerpt: The symposium "Pacific Salmon and Their Ecosystems: Status and Future Options',' and this book resulted from initial efforts in 1992 by Robert J. Naiman and Deanna J. Stouder to examine the problem of declining Pacific salmon (Oncorhynchus spp.). Our primary goal was to determine informational gaps. As we explored different scientific sources, state, provincial, and federal agencies, as well as non-profit and fishing organizations, we found that the information existed but was not being communicated across institutional and organizational boundaries. At this juncture, we decided to create a steering committee and plan a symposium to bring together researchers, managers, and resource users. The steering committee consisted of members from state and federal agencies, non-profit organizations, and private industry (see Acknowledgments for names and affiliations). In February 1993, we met at the University of Washington in Seattle to begin planning the symposium. The steering committee spent the next four months developing the conceptual framework for the symposium and the subsequent book. Our objectives were to accomplish the following: (1) assess changes in anadromous Pacific Northwest salmonid populations, (2) examine factors responsible for those changes, and (3) identify options available to society to restore Pacific salmon in the Northwest. The symposium on Pacific Salmon was held in Seattle, Washington, January 10-12, 1994. Four hundred and thirty-five people listened to oral presentations and examined more than forty posters over two and a half days. We made a deliberate attempt to draw in speakers and attendees from outside the Pacific Northwest.
Book Synopsis Pacific Salmon Life Histories by : Cornelis Groot
Download or read book Pacific Salmon Life Histories written by Cornelis Groot and published by UBC Press. This book was released on 1991 with total page 602 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pacific salmon are an important biological and economic resource of countries of the North Pacific rim. They are also a unique group of fish possessing unusually complex life histories. There are seven species of Pacific salmon, five occurring on both the North American and Asian continents (sockeye, pink, chum, chinook, and coho) and two (masu and amago) only in Asia. The life cycle of the Pacific salmon begins in the autumn when the adult female deposits eggs that are fertilized in gravel beds in rivers or lakes. The young emerge from the gravel the following spring and will either migrate immediately to salt water or spend one or more years in a river or lake before migrating. Migrations in the ocean are extensive during the feeding and growing phase, covering thousands of kilometres. After one or more years the maturing adults find their way back to their home river, returning to their ancestral breeding grounds to spawn. They die after spawning and the eggs in the gravel signify a new cycle. Upon this theme Pacific salmon have developed many variations, both between as well as within species. Pacific Salmon Life Histories provides detailed descriptions of the different life phases through which each of the seven species passes. Each chapter is written by a scientist who has spent years studying and observing a particular species of salmon. Some of the topics covered are geographic distribution, transplants, freshwater life, ocean life, development, growth, feeding, diet, migration, and spawning behaviour. The text is richly supplemented by numerous maps, illustrations, colour plates, and tables and there is a detailed general index, as well as a useful geographical index.
Book Synopsis Trout and Salmon of North America by : Robert Behnke
Download or read book Trout and Salmon of North America written by Robert Behnke and published by Simon and Schuster. This book was released on 2010-07-06 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: This beautiful and definitive guide brings together the world's lead leading expert on North American trout and salmon, Robert Behnke, and the foremost illustrator in the field, Joseph Tomelleri. North America is graced with the greatest diversity of trout and salmon on earth. From tiny brook trout in mountain streams of the Northeast, to cutthroat trout in the rivers of the Rockies, to Chinook salmon of the Pacific, the continent is home to more than 70 types of trout and salmon. How this came to be, how they are related, and what makes them unique -- and so breathtaking -- is the story of Trout and Salmon of North America. The more than 100 illustrations of trout and salmon by Joseph Tomelleri showcased here exhibit a genius for detail, coloration, and proportion. Each portrait is made from field notes, streamside observations, photographs, and specimens collected by the artist. The result is a set of the most accurate and stunning illustrations of fish ever created. Robert Behnke has distilled 50 years of his research and writing about trout and salmon in completing this book. No one understands better than Behnke the diversity and conservation issues concerning these fishes or communicates so lucidly the biological wonders and complexities of their particular beauty. Also included are more than 40 richly detailed maps that clearly show the ranges of populations of trout and salmon throughout North America. An irresistible delight for anyone who appreciates natural history, Trout and Salmon of North America is a master guide to the natural elegance of our native fishes.
Book Synopsis Canadian Journal of Fisheries and Aquatic Sciences by :
Download or read book Canadian Journal of Fisheries and Aquatic Sciences written by and published by . This book was released on 2013 with total page 546 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Microevolution Rate, Pattern, Process by : Andrew P. Hendry
Download or read book Microevolution Rate, Pattern, Process written by Andrew P. Hendry and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: From guppies to Galapagos finches and from adaptive landscapes to haldanes, this compilation of contributed works provides reviews, perspectives, theoretical models, statistical developments, and empirical demonstrations exploring the tempo and mode of microevolution on contemporary to geological time scales. New developments, and reviews, of classic and novel empirical systems demonstrate the strength and diversity of evolutionary processes producing biodiversity within species. Perspectives and theoretical insights expand these empirical observations to explore patterns and mechanisms of microevolution, methods for its quantification, and implications for the evolution of biodiversity on other scales. This diverse assemblage of manuscripts is aimed at professionals, graduate students, and advanced undergraduates who desire a timely synthesis of current knowledge, an illustration of exciting new directions, and a springboard for future investigations in the study of microevolution in the wild.
Book Synopsis Diadromy in Fishes by : Robert Montgomery McDowall
Download or read book Diadromy in Fishes written by Robert Montgomery McDowall and published by Timber Press (OR). This book was released on 1988 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the fish which exhibit diadromy, their life history strategies and the implications for fisheries. The book should therefore represent an important volume for workers in fish biology, animal physiology and behaviour, and fisheries.
Book Synopsis Analysis of Salmon and Steelhead Supplementation by : William H. Miller
Download or read book Analysis of Salmon and Steelhead Supplementation written by William H. Miller and published by . This book was released on 1990 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Upstream by : National Research Council
Download or read book Upstream written by National Research Council and published by National Academies Press. This book was released on 1996-07-17 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: The importance of salmon to the Pacific Northwestâ€"economic, recreational, symbolicâ€"is enormous. Generations ago, salmon were abundant from central California through Idaho, Oregon, and Washington to British Columbia and Alaska. Now they have disappeared from about 40 percent of their historical range. The decline in salmon numbers has been lamented for at least 100 years, but the issue has become more widespread and acute recently. The Endangered Species Act has been invoked, federal laws have been passed, and lawsuits have been filed. More than $1 billion has been spent to improve salmon runsâ€"and still the populations decline. In this new volume a committee with diverse expertise explores the complications and conflicts surrounding the salmon problemâ€"starting with available data on the status of salmon populations and an illustrative case study from Washington state's Willapa Bay. The book offers specific recommendations for salmon rehabilitation that take into account the key role played by genetic variability in salmon survival and the urgent need for habitat protection and management of fishing. The committee presents a comprehensive discussion of the salmon problem, with a wealth of informative graphs and charts and the right amount of historical perspective to clarify today's issues, including: Salmon biology and geographyâ€"their life's journey from fresh waters to the sea and back again to spawn, and their interaction with ecosystems along the way. The impacts of human activitiesâ€"grazing, damming, timber, agriculture, and population and economic growth. Included is a case study of Washington state's Elwha River dam removal project. Values, attitudes, and the conflicting desires for short-term economic gain and long-term environmental health. The committee traces the roots of the salmon problem to the extractive philosophy characterizing management of land and water in the West. The impact of hatcheries, which were introduced to build fish stocks but which have actually harmed the genetic variability that wild stocks need to survive. This book offers something for everyone with an interest in the salmon issueâ€"policymakers and regulators in the United States and Canada; environmental scientists; environmental advocates; natural resource managers; commercial, tribal, and recreational fishers; and concerned residents of the Pacific Northwest.
