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Author : Jason G. Romine
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (124 download)
Download or read book The Regional Salmon Outmigration Study :. written by Jason G. Romine and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : U.S. Department Of The Interior
Publisher : CreateSpace
ISBN 13 : 9781497419070
Total Pages : 44 pages
Book Rating : 4.4/5 (19 download)
Download or read book The Regional Salmon Outmigration Study?survival and Migration Routing of Juvenile Chinook Salmon in the Sacramento-San Joaquin River Delta During the Winter of 2008?09 written by U.S. Department Of The Interior and published by CreateSpace. This book was released on 2014-03 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: Juvenile Chinook salmon (Oncorhynchus tshawytscha) emigrating from natal tributaries of the Sacramento River may use a number of migration routes to navigate the Sacramento-San Joaquin River Delta (hereafter called "the Delta"), each of which may influence their probability of surviving. We applied a mark-recapture model to data from acoustically tagged juvenile late fall-run Chinook salmon that migrated through the Delta during the winter of 2008-09 to estimate route entrainment, survival, and migration times through the Delta.
Author : Jason G. Romine
Publisher :
ISBN 13 :
Total Pages : 36 pages
Book Rating : 4.:/5 (871 download)
Download or read book The Regional Salmon Outmigration Study written by Jason G. Romine and published by . This book was released on 2013 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Natalie N McNair
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (924 download)
Download or read book An Analysis of Juvenile Chinook Salmon Outmigration Speed and Survival in Response to Habitat Features: Sacramento River from Knights Landing to Sacramento, California written by Natalie N McNair and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Outmigration is an important life stage for Chinook salmon (Oncorhynchus tshawytscha) survival in the Sacramento River, and yet our understanding of their behavior and needs during this time is limited. To gain a better understanding of their survival and movement rates during outmigration, late fall run Chinook salmon smolts were tracked using acoustic telemetry techniques. Habitat features were measured and quantified throughout the study area to evaluate how Chinook salmon respond to key levee features including shade, instream woody material, and aquatic vegetation. The overall average movement speed through the entire study area was 0.77 m/s with an overall survival of 86%. Based on multiple linear regressions, vegetation was found to have the largest effect on speed with fish slowing down with increased vegetation cover. Shade, river mile, and velocity also had significant effects on movement speeds, but instream woody material was not significant. The result for woody material was surprising since it was anticipated to have a large impact on movement speeds. A positive correlation was found between faster fish movement speeds and higher survival. No evidence of diel movement patterns was found after releasing the fish. These finding can help managers create sites better designed to help Chinook salmon in the Sacramento River system. Results from this paper indicate that the type of woody material being installed might not be appropriate for this life stage of salmon.
Author : Colby Hause
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.5/5 (825 download)
Download or read book Outmigration Survival of Juvenile Spring-run Chinook Salmon in Relation to Physicochemical Conditions in the San Joaquin River written by Colby Hause and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Extirpation of Central Valley spring-run Chinook salmon ESU (Oncorhynchus tshawytscha) from the San Joaquin River is emblematic of salmonid declines across the Pacific Northwest. Previous telemetry studies monitoring reintroduction of threatened spring-run Chinook salmon to the San Joaquin River revealed low out-migration survival of juveniles from rehabilitated upriver habitats to the ocean. To evaluate the link between overall habitat conditions and survivorship, we combined state-of-the-art habitat mapping approaches (Fast Automated Limnological Measurements or "FLAMe") with classic acoustic telemetry technology along the 270 km emigration corridor in Spring of 2019. We used classification algorithms on FLAMe data to develop a zonation scheme for aquatic habitats along the mainstem San Joaquin River, including a portion of the Delta. Despite elevated flow conditions in 2019, outmigration survival of smolts was again comparatively low (5%). However, our habitat-based classification scheme described variation in survival of acoustic-tagged juvenile spring-run Chinook salmon better than other candidate models based on geography or distance. Two regional mortality sinks were evident along the water quality transect, revealing poor survival in areas with higher temperatures and low levels of chlorophyll-[alpha], fDOM, and turbidity. These findings illustrate an overall value in integrating simple classification frameworks to improve our understanding of habitat variation on survival dynamics of imperiled salmonid populations.
Author : Joe Holmberg
Publisher :
ISBN 13 :
Total Pages : 114 pages
Book Rating : 4.3/5 (121 download)
Download or read book Salmon in California written by Joe Holmberg and published by . This book was released on 1972 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : David A. Beauchamp
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (296 download)
Download or read book Snohomish River Juvenile Salmon Outmigration Study 1987 written by David A. Beauchamp and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : National Research Council
Publisher : National Academies Press
ISBN 13 : 0309166586
Total Pages : 304 pages
Book Rating : 4.3/5 (91 download)
Download or read book Atlantic Salmon in Maine written by National Research Council and published by National Academies Press. This book was released on 2004-09-07 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: Because of the pervasive and substantial decline of Atlantic salmon populations in Maine over the past 150 years, and because they are close to extinction, a comprehensive statewide action should be taken now to ensure their survival. The populations of Atlantic salmon have declined drastically, from an estimated half million adult salmon returning to U.S. rivers each year in the early 1800s to perhaps as few as 1,000 in 2001. The report recommends implementing a formalized decision-making approach to establish priorities, evaluate options and coordinate plans for conserving and restoring the salmon.
Author : David A. Beauchamp
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (32 download)
Download or read book Snohomish River Juvenile Salmon Outmigration Study 1986 written by David A. Beauchamp and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ueda, Hiroshi
Publisher : IGI Global
ISBN 13 : 1799820564
Total Pages : 160 pages
Book Rating : 4.7/5 (998 download)
Download or read book Physiological Aspects of Imprinting and Homing Migration in Salmon: Emerging Research and Opportunities written by Ueda, Hiroshi and published by IGI Global. This book was released on 2020-01-03 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: Salmon are one of the most popular and commonly eaten fish and are among the most important fishery resources in the world. They are born and die in fresh water but can live in both fresh water and seawater where they migrate between rivers and oceans, showing amazing abilities to home to their natal stream precisely. However, their dynamic life cycles and mysterious abilities of natal stream imprinting and homing migration are not well understood. Physiological Aspects of Imprinting and Homing Migration in Salmon: Emerging Researches and Opportunities is a pivotal reference source that introduces the dynamic and complicated life cycle of salmon connected with fish migration and climate changes and presents physiological mechanisms of natal stream imprinting and homing in salmon with special references to hormone, olfaction, memory, and behavior. Additionally, salmon resources concerning salmon commercial fisheries, aquaculture, and global propagation systems are discussed. This book is ideally designed for ichthyologists, environmentalists, pisciculture professionals, fisheries, marine biologists, scientists, researchers, academicians, and students seeking coverage on one of the most integral species of fish in the world.
Author : Don Williamson
Publisher :
ISBN 13 :
Total Pages : 68 pages
Book Rating : 4.:/5 (417 download)
Download or read book Chena River Salmon Outmigration Studies, 1981-1983 written by Don Williamson and published by . This book was released on 1984 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 56 pages
Book Rating : 4.3/5 (121 download)
Download or read book Delta Conveyance Improvement Studies Summary Report written by and published by . This book was released on 2007 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Committee on Protection and Management of Pacific Northwest Anadromous Salmonids
Publisher : National Academies Press
ISBN 13 : 0309556503
Total Pages : 473 pages
Book Rating : 4.3/5 (95 download)
Download or read book Upstream written by Committee on Protection and Management of Pacific Northwest Anadromous Salmonids and published by National Academies Press. This book was released on 1996-07-31 with total page 473 pages. Available in PDF, EPUB and Kindle. Book excerpt: The importance of salmon to the Pacific Northwest--economic, recreational, symbolic--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 runs--and still the populations decline. In this new volume a committee with diverse expertise explores the complications and conflicts surrounding the salmon problem--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 geography--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 activities--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 issue--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.
Author : Kent J. Roth
Publisher :
ISBN 13 :
Total Pages : 128 pages
Book Rating : 4.:/5 (523 download)
Download or read book The Migration and Growth of Juvenile Salmon in the Susitna River, 1985 written by Kent J. Roth and published by . This book was released on 1986 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This report presents the results of the juvenile salmon outmigration studies conducted on the Susitna River between Cook Inlet and Devil Canyon during the 1985 open-water season. Five Pacific salmon species were studied: chinook (Oncorhynchus tshawytscha), coho (O. kisutch), sockeye (O. nerka), chum (O. keta), and pink (O. gorbuscha)."--Page 1.
Author : Bror Jonsson
Publisher : Springer Science & Business Media
ISBN 13 : 9400711891
Total Pages : 720 pages
Book Rating : 4.4/5 (7 download)
Download or read book Ecology of Atlantic Salmon and Brown Trout written by Bror Jonsson and published by Springer Science & Business Media. This book was released on 2011-05-03 with total page 720 pages. Available in PDF, EPUB and Kindle. Book excerpt: Destruction of habitat is the major cause for loss of biodiversity including variation in life history and habitat ecology. Each species and population adapts to its environment, adaptations visible in morphology, ecology, behaviour, physiology and genetics. Here, the authors present the population ecology of Atlantic salmon and brown trout and how it is influenced by the environment in terms of growth, migration, spawning and recruitment. Salmonids appeared as freshwater fish some 50 million years ago. Atlantic salmon and brown trout evolved in the Atlantic basin, Atlantic salmon in North America and Europe, brown trout in Europe, Northern Africa and Western Asia. The species live in small streams as well as large rivers, lakes, estuaries, coastal seas and oceans, with brown trout better adapted to small streams and less well adapted to feeding in the ocean than Atlantic salmon. Smolt and adult sizes and longevity are constrained by habitat conditions of populations spawning in small streams. Feeding, wintering and spawning opportunities influence migratory versus resident lifestyles, while the growth rate influences egg size and number, age at maturity, reproductive success and longevity. Further, early experiences influence later performance. For instance, juvenile behaviour influences adult homing, competition for spawning habitat, partner finding and predator avoidance. The abundance of wild Atlantic salmon populations has declined in recent years; climate change and escaped farmed salmon are major threats. The climate influences through changes in temperature and flow, while escaped farmed salmon do so through ecological competition, interbreeding and the spreading of contagious diseases. The authors pinpoint essential problems and offer suggestions as to how they can be reduced. In this context, population enhancement, habitat restoration and management are also discussed. The text closes with a presentation of what the authors view as major scientific challenges in ecological research on these species.
Author : National Research Council (U.S.). Committee on Water Resources Management, Instream Flows, and Salmon Survival in the Columbia River Basin
Publisher : National Academy Press
ISBN 13 :
Total Pages : 274 pages
Book Rating : 4.3/5 (91 download)
Download or read book Managing the Columbia River written by National Research Council (U.S.). Committee on Water Resources Management, Instream Flows, and Salmon Survival in the Columbia River Basin and published by National Academy Press. This book was released on 2004 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: Book News, Inc., Portland, OR (booknews.com).
Author :
Publisher :
ISBN 13 :
Total Pages : 350 pages
Book Rating : 4.:/5 (133 download)
Download or read book Regional Economic Impact Models for the Lower Snake River Juvenile Salmon Migration Feasibility Study written by and published by . This book was released on 1999 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt:
