Buskin River Sockeye Salmon Smolt Abundance Assessment, Kodiak, Alaska, 2010-2011 PDF Download
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Author: Julia S. Schmidt
Publisher:
ISBN:
Category : Escapement (Fisheries)
Languages : en
Pages : 55
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Book Description
In 2010, the Alaska Department of Fish and Game, Division of Sport Fish, initiated a 2-year study to evaluate the feasibility of annually estimating the total abundance of sockeye salmon smolt (Oncorhynchus nerka) emigrating from the Buskin River drainage in the Kodiak Management Area. This report presents data collected during the 2010 and 2011 study years, in which smolt counts were obtained using floating incline plane and modified Canadian fan trap designs. Total abundance was assessed using census counts, mark-recapture experiments, and genetics-based mixed stock analysis.
Author: Julia S. Schmidt
Publisher:
ISBN:
Category : Escapement (Fisheries)
Languages : en
Pages : 55
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Book Description
In 2010, the Alaska Department of Fish and Game, Division of Sport Fish, initiated a 2-year study to evaluate the feasibility of annually estimating the total abundance of sockeye salmon smolt (Oncorhynchus nerka) emigrating from the Buskin River drainage in the Kodiak Management Area. This report presents data collected during the 2010 and 2011 study years, in which smolt counts were obtained using floating incline plane and modified Canadian fan trap designs. Total abundance was assessed using census counts, mark-recapture experiments, and genetics-based mixed stock analysis.
Author: Tyler Polum
Publisher:
ISBN:
Category : Escapement (Fisheries)
Languages : en
Pages : 65
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Book Description
This report presents 2010-2013 study results, including annual sockeye salmon escapement counts, harvests, estimates of age and sex composition and mean-length-at-age by sex, and spawner-recruitment analyses of the Buskin River, Kodiak Island, Alaska.
Author: Donn Tracy
Publisher:
ISBN:
Category : Escapement (Fisheries)
Languages : en
Pages : 20
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Book Description
Author: Mark J. Witteveen
Publisher:
ISBN:
Category : Escapement (Fisheries)
Languages : en
Pages : 0
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Book Description
The Alaska Department of Fish and Game, Division of Sport Fish, has assessed the annual run of Buskin River sockeye salmon (Oncorhynchus nerka) on Kodiak Island, Alaska, since 1990. Buskin River sockeye salmon weir counts were 4,284, 12,297, 7,741, and 2,330 fish for 2018–2021, respectively. Weir counts for Lake Louise were 83, 73, 53, and 1,896 sockeye salmon for 2018–2021, respectively. Reported annual subsistence harvests for the Buskin River Section were 474, 836, and 1,620 sockeye salmon for 2018–2020, respectively; accurate harvest is not available for 2021 at this time. In interviews conducted with 11 subsistence users in 2019, 100% reported that the Buskin River was a traditional fishing location, and 73% reported that they subsistence fished in other areas. Interviews were not conducted in 2018 due to a low run or in 2020 and 2021 due to COVID-19. Enumerated sockeye salmon spawning escapement for the entire drainage (Buskin Lake and Louise Lake weirs) was 4,367, 12,370, 7,794, and 4,226 fish for 2018–2021, respectively. Based on a Bayesian spawner–recruitment analysis of the Buskin Lake system, estimated spawning escapement for maximum sustained yield is about 5,700 fish (95% credibility interval = 4,300–8,000). A sustained yield probability analysis supports the current Buskin Lake system biological escapement goal (BEG) range of 5,000–8,000 sockeye salmon. Age-1.2, -1.3, -2.2, and -2.3 sockeye salmon composed 93–99% of the Buskin River run. Male to female ratios for the Buskin River were between 0.6 and 1.1 to 1 for 2018–2021. Samples taken from the Lake Louise sockeye salmon run and the subsistence harvest were too low to provide reliable estimates of age and sex composition.
Author: Julia S. Schmidt
Publisher:
ISBN:
Category : Escapement (Fisheries)
Languages : en
Pages : 64
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Book Description
This report presents 2007-2009 study results, including daily and seasonal sockeye salmon escapement counts, harvests, estimates of age and sex composition and mean-length-at-age by sex, and spawner-recruitment analyses of the Buskin River, Kodiak Island, Alaska.
Author: Julia S. Schmidt
Publisher:
ISBN:
Category : Escapement (Fisheries)
Languages : en
Pages : 44
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Book Description
This report presents age, sex, length and run-size data collected between 2004 and 2006 of sockeye salmon, Oncorhynchus nerka, of the Buskin River, Kodiak Island, Alaska.
Author: Mark J. Witteveen
Publisher:
ISBN:
Category : Escapement (Fisheries)
Languages : en
Pages : 72
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Book Description
The Alaska Department of Fish and Game, Division of Sport Fish, has assessed the annual run of Buskin River sockeye salmon (Oncorhynchus nerka) on Kodiak Island, Alaska since 1990. Buskin River sockeye salmon weir counts were 13,976; 8,718; 11,297; and 7,219 fish for 2014-2017, respectively. Weir counts for Lake Louise were 925, 280, 156, and 141 sockeye salmon for 2014-2017, respectively. Reported annual subsistence harvests for the Buskin River Section were 5,616; 3,920; and 4,767 sockeye salmon for 2014-2016, respectively; harvest is not available for 2017 at this time. Mixed stock analysis of genetic samples from the Buskin River sockeye salmon subsistence fishery showed 91-97% of the 2014-2017 harvests were of Buskin Lake origin sockeye salmon and 0.5-4.1% were of sockeye salmon bound for Lake Louise. In interviews conducted from 2014 through 2017, an average of 89% of subsistence users reported each year that the Buskin River was a traditional fishing location, and an average of 79% reported each year that they subsistence fished in other areas. Enumerated sockeye salmon spawning escapement for the entire drainage was 14,901; 8,998; 11,453; and 7,360 fish for 2014-2017, respectively. Based on a Bayesian spawner-recruitment analysis, estimated spawning escapement for maximum sustained yield is about 6,500 fish (95% credibility interval 5,100-8,400). A sustained yield probability analysis supports the current Buskin Lake system biological escapement goal (BEG) range of 5,000-8,000 sockeye salmon. Age-1.3, -2.2, and -2.3 sockeye salmon composed 90-99% of the subsistence harvests for 2014-2017 and composed 76-96% of the Buskin River and 50-100% of the Lake Louise escapements. Male to female ratios for the Buskin River were between 0.7 and 1.1 to 1 for 2014-2017; they were 1.3-2.5 to 1 for Lake Louise, and 0.8-1.5 to 1 for the subsistence harvest.
Author: Julia S. Schmidt
Publisher:
ISBN:
Category : Escapement (Fisheries)
Languages : en
Pages : 76
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Book Description
Author: Steven G. Honnold
Publisher:
ISBN:
Category : Alaska Maritime National Wildlife Refuge (Alaska)
Languages : en
Pages : 28
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Book Description
Presents data collected in 2004 for a three-year study (2004-2006) assessing smolt abundance, spawning and rearing habitats of sockeye salmon in Afognak Lake.
Author: Patrick A. Shields
Publisher:
ISBN:
Category : Fish populations
Languages : en
Pages : 58
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Book Description
This report examines the results of a test fishery which was conducted during the 2010 upper Cook Inlet (UCI) commercial salmon fishing season. The test fishery was designed to estimate the inseason abundance and run timing of the sockeye salmon Oncorhynchus nerka entering the UCI management area.
