Analysis of the 1983-85 Cowlitz River Runs of Fall Chinook and Coho Salmon PDF Download
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Author: John DeVore
Publisher:
ISBN:
Category : Fish culture
Languages : en
Pages : 42
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Book Description
Author: John DeVore
Publisher:
ISBN:
Category : Fish culture
Languages : en
Pages : 42
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Book Description
Author: John DeVore
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 42
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 362
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Book Description
Author: Library of Congress. Exchange and Gift Division
Publisher:
ISBN:
Category : State government publications
Languages : en
Pages : 554
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Book Description
An annual index to the monographs appears early in the following year.
Author:
Publisher:
ISBN:
Category : State government publications
Languages : en
Pages : 300
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Book Description
Author: Cornelis Groot
Publisher: UBC Press
ISBN: 9780774803595
Category : Nature
Languages : en
Pages : 602
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Book Description
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.
Author: Pacific Fishery Management Council (U.S.)
Publisher:
ISBN:
Category : Fishery management
Languages : en
Pages : 248
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Book Description
Author: Guy Norman
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages :
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Author:
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 186
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 257
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Book Description
This project analyzes in greater detail the coded-wire-tag (CWT) returns of Priest Rapids Hatchery fall chinook for the years 1976--1989 initially begun by Hilborn et al. (1993a). These additional analyses were prompted by suggestions made by peer reviews of the initial draft report. The initial draft and the peer review comments are included in this final report (Appendices A and B). The statistical analyses paired Priest Rapids stock with potential downriver reference stocks to isolate in-river survival rates. Thirty-three potential reference stocks were initially examined for similar ocean recovery rates; the five stocks with the most similar recovery patterns (i.e., Bonneville Brights, Cowlitz, Gray's River, Tanner Creek, and Washougal) to the Priest Rapids stock were used in the subsequent analysis of in-river survival. Three alternate forms of multiple regression models were used to investigate the relationship between predicted in-river survival and ambient conditions. Analyses were conducted with and without attempts to adjust for smolt transportation at McNary Dam. Independent variables examined in the analysis included river flows, temperature, turbidity, and spill along with the total biomass of hatchery releases in the Columbia-Snake River Basin.
