Spawning Abundance of Chinook Salmon in the Chickamin River in 2004 PDF Download
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Author: Glenn M. Freeman
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 30
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Book Description
Author: Glenn M. Freeman
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 30
Get Book Here
Book Description
Author: Glenn M. Freeman
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 27
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Book Description
Author: Glenn M. Freeman
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 26
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Book Description
Author: Glenn M. Freeman
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 27
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Book Description
Author: Jan L. Weller
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 33
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Book Description
The escapement of chinook salmon, Oncorhynchus tshawytscha, returning to the Chickamin River in 2005 was estimated for a fifth consecutive year as part of an effort to determine an expansion factor to apply to future and historical peak aerial survey counts. The escapement of spawning salmon, an expansion factor for peak aerial survey counts, and age, sex, and length composition of the population were estimated. Escapement was estimated using a two-event mark-recapture experiment.
Author: James William Savereide
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 44
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Book Description
Author: Keith A. Pahlke
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 27
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Book Description
Author: Keith A. Pahlke
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 40
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Book Description
Author:
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 44
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Book Description
A cooperative study involving the Department of Fisheries and Oceans Canada, the Alaska Department of Fish and Game, and the Taku River Tlingit First Nation was conducted to estimate the number of spawning Chinook salmon Oncorhynchus tshawytscha in the Taku River in 2003 with a mark-recapture experiment. Fish were captured at Canyon Island on the lower Taku River with fish wheels from May through August and were individually marked with back-sewn, solid-core spaghetti tags. All tagged fish were also batch marked with an opercle punch plus removal of the left axillary appendage. Sampling on the spawning grounds in tributaries was used to estimate the fraction of the population that had been marked. The estimated spawning abundance of small Chinook salmon ( 400 mm long; mid-eye to fork of tail) was 3,489 (SE = 1,052). Spawning abundance of medium-size Chinook salmon (401-659 mm) was estimated to be 16,780 (SE = 2,274). Finally, spawning abundance of large-size fish (= 660 mm) was estimated to be 36,435 (SE = 6,705), and the estimated total of all fish was 56,704 (SE = 7,158). The sum of the peak aerial survey counts of large spawning Chinook salmon conducted at five index tributaries of the Taku River was 16% of the mark-recapture estimate. Age 1.3 fish (1998 brood year) constituted an estimated 40% of the spawning population, followed by age 1.2 fish (1999 brood year), which constituted an estimated 29% of the population.
Author: Scott Alan McPherson
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 24
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Book Description
