Optimal Production of Chinook Salmon from the Chena and Salcha Rivers PDF Download

Author: Matthew J. Evenson
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ISBN:
Category : Chinook salmon
Languages : en
Pages : 37

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Author: Scott Alan McPherson
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ISBN:
Category : Chinook salmon
Languages : en
Pages : 64

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Author: Scott Alan McPherson
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ISBN:
Category : Chinook salmon
Languages : en
Pages : 0

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Author: Randolph P. Ericksen
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Category : Chinook salmon
Languages : en
Pages : 41

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Author: David R. Bernard
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Category : Chinook salmon
Languages : en
Pages : 39

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Author: Christie F. Hendrich
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Category : Chinook salmon
Languages : en
Pages : 134

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Estimations of optimal production of adult Chinook salmon, Oncorhynchus tshawytscha, from the Unuk River using information from a stock assessment program (1981-2005) and catch sampling programs of the U.S. and Canadian troll, gillnet and recreational fisheries.

Author: Audra Lee Janiak Brase
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Category : Chinook salmon
Languages : en
Pages : 29

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This report describes a management plan for the chinook salmon fisheries of the Chena and Salcha Rivers, with the objective of managing sport harvest to achieve the Biological Escapement Goals (BEG) for each river.

Author: Scott Alan McPherson
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 100

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Results of a study of the biological escapement goal for Chinook salmon, Oncorhynchus tshawytscha, from the Taku River. This study was investigated with information from a stock assessment program (1973-2007), catch sampling programs of the Canadian inriver gillnet fishery, the U.S. commercial gillnet fishery in Taku Inlet, the troll fishery in Southeast Alaska, and the U.S. recreational fishery near Juneau.

Author: Alan Burkholder
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ISBN:
Category : Chinook salmon
Languages : en
Pages : 32

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Author: Allison N. Matter
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Category : Chinook salmon
Languages : en
Pages : 62

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During 2018, the Alaska Department of Fish and Game conducted salmon enumeration projects on the Chena, Salcha, and Delta Clearwater Rivers in the Tanana River drainage. Chinook salmon Oncorhynchus tshawytscha escapements for the Chena and Salcha Rivers were estimated using tower-counting techniques with the addition of sonar (DIDSON and ARIS) apportionment, interpolation, and a Bayesian hierarchical model as a means of enumeration when high-water events precluded visual counts. The Chena River counting tower and sonars operated from 27 June until 10 August, and the final escapement estimate was 5,947 (SE = 226) Chinook salmon. The adjusted sex composition was 0.63 (SE = 0.07) male and 0.37 (SE = 0.07) female (n = 348). The dominant age class was 1.3 for males (41% of total escapement) and 1.4 for females (28% of total escapement). The Salcha River counting tower and sonars operated from 27 June until 10 August and the final escapement estimate was 4,195 (SE = 205) Chinook salmon. The adjusted sex composition was 0.65 (SE = 0.07) male and 0.35 (SE = 0.07) female (n=504). Like the Chena River, the dominant age class was 1.3 for males (31% of total escapement) and 1.4 for females (35% of total escapement). Incomplete chum salmon Oncorhynchus keta escapements for the Chena and Salcha Rivers were estimated to be 13,084 (SE = 1705) and 39,996 (SE = 8,095), respectively. Coho salmon Oncorhynchus kisutch escapement in the Delta Clearwater River was estimated as 2,884 fish by a visual boat survey at peak escapement on 7 November.