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Author: Alaska. Department of Fish and Game
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 36
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Book Description
Author: Alaska. Department of Fish and Game
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 36
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Book Description
Author: Scott Alan McPherson
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 194
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Book Description
Harvests of chinook salmon stock groups in Southeast Alaska were estimated from recoveries of coded-wire tags in the fish between 1979 and 1999.
Author: Kyle Shedd
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 0
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Chinook salmon originating in Alaska, British Columbia, and the Pacific Northwest are harvested in Southeast Alaska (SEAK) commercial troll and sport fisheries. Owing to its mixed stock nature, the overall SEAK Chinook salmon fishery is managed as 1 of 3 Aggregate Abundance-Based Management (AABM) fisheries under provisions of the Pacific Salmon Treaty Agreement. The Alaska Department of Fish and Game has used genetic mixed stock analysis to estimate the stock composition of Chinook salmon harvests in the SEAK troll fisheries since 1998 and sport fisheries since 2004 based on a genetic baseline developed by the Genetic Analysis of Pacific Salmonids group for use in Pacific Salmon Treaty fisheries. Genetic methods allow direct estimation of the major stock groups contributing to these fisheries. This project estimated the relative stock composition of troll and sport fishery harvests from fishery accounting year (AY) 2019 (Oct. 1, 2018–Sept. 30, 2019). The major contributors to the troll and sport fisheries ordered from north to south were Southeast Alaska/Transboundary River, North/Central British Columbia, West Coast Vancouver Island, South Thompson, Washington Coast, Interior Columbia River summer/fall, and Oregon Coast reporting groups. Collectively, these 7 stock aggregates, referred to as driver stocks, accounted for 93% of the troll harvest and 95% of the sport harvest. The South Thompson driver stock was the largest contributor to the troll fishery (24% of the harvest), and Southeast Alaska/Transboundary River (TBR) and West Coast Vancouver Island stock groups were the largest contributors to the sport fishery (31% of the harvest each). Results indicate considerable temporal and spatial variation in the composition of troll and sport harvests in AY 2019, and changes in the relative contributions of driver stocks across years. Stock composition data from this and other stock assessments are being used to provide fisheries information, including stock-specific run reconstructions and forecasting of run sizes to transboundary rivers, and separate harvest estimates of SEAK and TBR wild and hatchery salmon.
Author: Sara Conrad
Publisher:
ISBN:
Category : Fishery management
Languages : en
Pages : 0
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Book Description
Southeast Alaska and Yakutat commercial, personal use, and subsistence salmon fisheries are summarized for the 2021 season. Historical harvests are provided for comparison. Total commercial harvest in 2021 was 58.9 million salmon with an estimated exvessel value of $143 million. Harvest by species in 2021 included 226,000 Chinook (Oncorhynchus tshawytscha), 1.1 million sockeye (O. nerka), 1.6 million coho (O. kisutch), 48.5 million pink (O. gorbuscha), and 7.4 million chum (O. keta) salmon. In the purse seine fishery, 208 permit holders harvested 48.2 million salmon, including 44.5 million pink and 2.6 million chum salmon. In the drift gillnet fishery, 371 permit holders harvested 2.6 million salmon, including 1.5 million chum, 673,000 pink, 209,000 sockeye, 193,000 coho, and 17,000 Chinook salmon. In the troll fishery, 629 power troll and 202 hand troll permit holders (831 total permits) harvested 163,000 Chinook, 849,000 coho, and 704,000 chum salmon. In the set gillnet fishery, 95 permit holders harvested 88,000 sockeye and 75,000 coho salmon. Hatchery organizations harvested a total of 3 million salmon for cost recovery including 2.5 million chum salmon. In the 2021 subsistence/personal use fisheries, 3,077 household permits were issued for fishing in Southeast Alaska and Yakutat; reported 2021 harvest to date is 30,714 salmon.
Author: Marilyn Sigman
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 34
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Book Description
Author: Sara Conrad
Publisher:
ISBN:
Category : Fishery management
Languages : en
Pages : 33
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Book Description
Southeast Alaska and Yakutat commercial, personal use, and subsistence salmon fisheries are summarized for the 2020 season. Historical harvests are provided for comparison. Total commercial harvest in 2020 was 14.6 million salmon with an estimated exvessel value of $55.2 million. Harvest by species in 2020 included 213,000 Chinook (Oncorhynchus tshawytscha), 458,000 sockeye (O. nerka), 1.2 million coho (O. kisutch), 8.1 million pink (O. gorbuscha), and 4.7 million chum salmon (O. keta). In the purse seine fishery, 201 permit holders harvested 8.3 million salmon, including 6.0 million pink and 2.0 million chum salmon. In the drift gillnet fishery, 368 permit holders harvested 1.8 million salmon, including 1.1 million chum, 501,000 pink, 125,000 coho, 102,000 sockeye, and 19,000 Chinook salmon. In the troll fishery, 627 power troll and 205 hand troll permit holders (832 total permits) harvested 170,000 Chinook, 751,000 coho, and 80,000 chum salmon. In the set gillnet fishery, 91 permit holders harvested 26,000 sockeye and 82,000 coho salmon. Hatchery organizations harvested a total of 2.7 million salmon for cost recovery including 1.5 million chum salmon. In the 2020 subsistence/personal fisheries, 3,567 household permits were issued in Southeast Alaska and Yakutat combined. Reported harvest for 2020 to date is 18,000 salmon.
Author: Kyle Shedd
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 72
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Book Description
Chinook salmon originating from Alaska, British Columbia, and the Pacific Northwest are harvested in the Southeast Alaska (SEAK) commercial troll and sport fisheries. Owing to its mixed stock nature, the overall SEAK Chinook salmon fishery is managed as 1 of 3 aggregate abundance-based management fisheries under provisions of the Pacific Salmon Treaty (PST) Agreement. Genetic methods have been implemented in SEAK since 2004 and allow direct estimation of the major stock groups contributing to these fisheries. This project estimated the relative stock composition of SEAK troll and sport fishery harvests from fishery accounting year (AY) 2017 (October 1, 2016-September 30, 2017). The major contributors to the SEAK fisheries ordered from north to south were the Southeast Alaska/Transboundary River, North/Central British Columbia, West Vancouver, South Thompson, Washington Coast, Interior Columbia River Summer/Fall (Su/F), and Oregon Coast reporting groups. Collectively, these 7 stock aggregates, referred to as driver stocks, accounted for 89% of the troll harvest and 95% of the sport harvest. The Interior Columbia River Su/F driver stock was the largest contributor to the troll fishery (24% of the harvest), and Southeast Alaska/Transboundary River was the largest contributor to the sport fishery (28% of the harvest). Results indicate considerable temporal and spatial variation in the composition of troll and sport harvests in AY 2017 and across years. Stock composition data from this and other stock assessments are used to provide fisheries information including stock-specific run reconstructions, forecasting of run sizes to transboundary rivers, determining the origin of catches in the SEAK troll fishery by age to assist in evaluation of the Pacific Salmon Commission Chinook Model, estimating harvest of SEAK and transboundary river wild and hatchery salmon separately, and estimating some terminal run sizes of stocks in the PST area that drive the SEAK fishery. three-event mark-recapture experiment was conducted on northern pike Esox lucius in Minto Flats, Alaska from March through August 2018. Abundance was estimated for 2 specific populations: 1) an overwintering population residing in the Chatanika River upriver from its confluence with Goldstream Creek, called the Chatanika River Overwintering Area (CROA); and 2) a summer population occupying a wetland complex defined as the Minto Lakes Study Area (MLSA). Fish were sampled and marked in the CROA from 7-23 March 2018 and 12-21 June 2018 in the MLSA. Recapture events occurred in the MLSA from 12-21 June 2018 (concurrent with marking) and 7-16 August 2018. One-hundred radio tags were deployed during March 2018 to evaluate movements of northern pike relative to the mark-recapture experiment. Two models were used to estimate abundances: a traditional two-event Petersen mark-recapture model for closed populations, and a multinomial Bayesian model. The Petersen model abundance estimate of fish ≥600 mm fork length (FL) in the CROA was 14,817 (SE = 1,836) and for the MLSA was 11,956 (SE = 5,836). The Bayesian multinomial model abundance estimate for fish ≥600 mm FL in the CROA was 14,675 (SE = 1,631) and for the MLSA was 11,443 (SE = 1,651). The Bayesian multinomial model generated more precise estimates because it used data from all sampling events and incorporated information from the radiotagged fish. There were significantly more northern pike in the MLSA than what was found in 2008. Biases in the estimates were addressed and the 2 modeling approaches were evaluated. The current exploitation rate of northern pike in Minto Flats is 7.3%, which is well below the maximum threshold stipulated by the joint sport and subsistence fishery management plans.
Author: Grant Hagerman
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 0
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Book Description
Escapements of Chinook salmon have fallen below the lower bound of the current BEG range for Chilkat River in 3 of the past 5 years, for King Salmon River in 4 of the past 5 years, and for the Taku River in 5 of the past 5 years. In response to guidelines established in the Policy for the management of sustainable salmon fisheries (SSFP), the Alaska Department of Fish and Game (department) recommended the Chilkat and King Salmon River Chinook salmon (Oncorhynchus tshawytscha) stocks be designated as stocks of “management concern” in 2017 followed by approval from the Alaska Board of Fisheries at the 2018 Southeast and Yakutat Finfish and Shellfish meeting. In October 2020, the department recommended the continuation of stock of management concern status for the Chilkat and King Salmon Rivers and to add the Taku River Chinook salmon stock at 2021 Southeast Alaska and Yakutat meeting. A “management concern” is defined as “a concern arising from a chronic inability, despite use of specific management measures, to maintain escapements for a salmon stock within the bounds of the SEG [sustainable escapement goal], BEG [biological escapement goal], OEG [optimum escapement goal], or other specified management objectives for the fishery.” Since 2012, the department has implemented conservative management measures to reduce the harvest of the Chilkat River stock of Chinook salmon and increase escapement. Through these measures, and from actions taken to reduce the harvest of the Taku River stock of Chinook salmon, by extension, harvest on the stock of Chinook salmon from the King Salmon River may likewise have been reduced. Although these management actions have been effective at reducing overall harvest rates, the poor runs have been so low that achievement of BEGs has been problematic.
Author: Kyle Shedd
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 73
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Book Description
Chinook salmon originating in Alaska, British Columbia, and the Pacific Northwest are harvested in Southeast Alaska (SEAK) commercial troll and sport fisheries. Owing to its mixed stock nature, the overall SEAK Chinook salmon fishery is managed as 1 of 3 aggregate abundance-based management fisheries under provisions of the Pacific Salmon Treaty Agreement. The Alaska Department of Fish and Game has used genetic mixed stock analysis to estimate the stock composition of Chinook salmon harvests in the SEAK troll and sport fisheries since 2004 based on a genetic baseline developed by the Genetic Analysis of Pacific Salmonids group for use in Pacific Salmon Treaty fisheries. Genetic methods allow direct estimation of the major stock groups contributing to these fisheries. This project estimated the relative stock composition of troll and sport fishery harvests from fishery accounting year (AY) 2018 (Oct. 1, 2017–Sept. 30, 2018). The major contributors to the troll and sport fisheries ordered from north to south were the Southeast Alaska/Transboundary River, North/Central British Columbia, West Coast Vancouver Island, South Thompson, Washington Coast, Interior Columbia River Summer/Fall, and Oregon Coast reporting groups. Collectively, these 7 stock aggregates, referred to as driver stocks, accounted for 91% of the troll harvest and 95% of the sport harvest. The Southeast Alaska/Transboundary River driver stock was the largest contributor to both the troll (18%) and sport fishery (38%) harvest. Results indicate considerable temporal and spatial variation in the composition of troll and sport harvests in AY 2018, and changes in the relative contributions of driver stocks across years. Stock composition data from this and other stock assessments are being used to provide fisheries information including stock-specific run reconstructions and forecasting of run sizes to transboundary rivers, and separate harvest estimates of SEAK and transboundary river wild and hatchery salmon.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 104
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Book Description
