Author: Thomas Peter QuinnPublisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 17
Book Description
Patterns of Flow, Temperature and Migration of Adult Yakima River Spring Chinook Salmon
Author: Thomas Peter QuinnPublisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 17
Book Description
Migratory Behavior of Adult Spring Chinook Salmon in the Willamette River and Its Tributaries
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 59
Book Description
Migration patterns of adult spring chinook salmon above Willamette Falls differed depending on when the fish passed the Falls, with considerable among-fish variability. Early-run fish often terminated their migration for extended periods of time, in association with increased flows and decreased temperatures. Mid-run fish tended to migrate steadily upstream at a rate of 30-40 km/day. Late-run fish frequently ceased migrating or fell back downstream after migrating 10-200 km up the Willamette River or its tributaries; this appeared to be associated with warming water during summer and resulted in considerable mortality. Up to 40% of the adult salmon entering the Willamette River System above Willamette Falls (i.e. counted at the ladder) may die before reaching upriver spawning areas. Up to 10% of the fish passing up over Willamette Falls may fall-back below the Falls; some migrate to the Columbia River or lower Willamette River tributaries. If rearing conditions at hatcheries affect timing of adult returns because of different juvenile development rates and improper timing of smolt releases, then differential mortality in the freshwater segment of the adult migrations may confound interpretation of studies evaluating rearing practices.
Migration and Movement Patterns of Adult Chinook Salmon (Oncorhynchus Tshawytscha) Above Wells Dam
Author: Charmane E. AshbrookPublisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 166
Book Description
Migratory Behavior of Adult Spring Chinook Salmon in the Willamette River and Its Tributaries
Author: Effects of Temperature, Flow, and Disturbance on Adult Spring-run Chinook Salmon
Author: Elizabeth A. CampbellPublisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 78
Book Description
Return to the River
Author: Richard N. WilliamsPublisher: Elsevier
ISBN: 0080454305
Category : Science
Languages : en
Pages : 720
Book Description
Return to the River will describe a new ecosystem-based approach to the restoration of salmon and steelhead populations in the Columbia River, once one of the most productive river basins for anadromous salmonids on the west coast of North America. The approach of this work has broad applicability to all recovery efforts throughout the northern hemisphere and general applicability to fisheries and aquatic restoration efforts throughout the world. The Pacific Northwest is now embroiled in a major public policy debate over the management and restoration of Pacific salmon. The outcome of the debate has the potential to affect major segments of the region's economy - river transportation, hydroelectric production, irrigated agriculture, urban growth, commercial and sport fisheries, etc. This debate, centered as it is on the salmon in all the rivers, has created a huge demand for information. The book will be a powerful addition to that debate. - A 15 year collaboration by a diverse group of scientists working on the management and recovery of salmon, steelhead trout, and wildlife populations in the Pacific Northwest - Includes over 200 figures, with four-color throughout the book - Discusses complex issues such as habitat degradation, juvenile survival through the hydrosystem, the role of artificial production, and harvest reform
Application of Numerical Water Quality Models in Ecological Assessment
Author: Michael Luis DeasPublisher:
ISBN:
Category : Aquacultural engineering
Languages : en
Pages : 878
Book Description
Abundance and Distribution of Hatchery and Natural Origin Precociously Mature Male Spring Chinook Salmon in the Yakima River
Author: Christopher JohnsonPublisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 0
Book Description
Status and Future of Spring Chinook Salmon in the Columbia River Basin--conservation and Enhancement
Author: Donn L. ParkPublisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 146
Book Description
Author: