Migratory Timing and Abundance Estimates of Sockeye Salmon Into Upper Cook Inlet, Alaska, 2017 PDF Download
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Author: Alyssa Frothingham
Publisher:
ISBN:
Category : Fish populations
Languages : en
Pages : 55
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Book Description
In 2017, the southern offshore test fishery (OTF) conducted from July 1 through July 31 captured 2,586 sockeye salmon Oncorhynchus nerka, which represented 2,194 catch per unit of effort (CPUE) index points. The midpoint of the 2017 sockeye salmon run at the southern OTF occurred on July 20. A formal inseason estimate of the 2017 run size was made on July 24 and this analysis predicted a total run to Upper Cook Inlet (UCI) of 7.11 million sockeye salmon. Therefore, the first best-fit total run estimate from the formal inseason projection of the 2017 run was approximately 54.2% higher than the actual run size. An inseason estimate was also made for the Kenai River sockeye salmon run on July 24; the July 24 analysis predicted a total run to the Kenai River that range of 1.6-4.3 million fish. Sockeye salmon and coho salmon O. kisutch genetic samples were collected from the OTF and archived for future analysis.
Author: Alyssa Frothingham
Publisher:
ISBN:
Category : Fish populations
Languages : en
Pages : 55
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Book Description
In 2017, the southern offshore test fishery (OTF) conducted from July 1 through July 31 captured 2,586 sockeye salmon Oncorhynchus nerka, which represented 2,194 catch per unit of effort (CPUE) index points. The midpoint of the 2017 sockeye salmon run at the southern OTF occurred on July 20. A formal inseason estimate of the 2017 run size was made on July 24 and this analysis predicted a total run to Upper Cook Inlet (UCI) of 7.11 million sockeye salmon. Therefore, the first best-fit total run estimate from the formal inseason projection of the 2017 run was approximately 54.2% higher than the actual run size. An inseason estimate was also made for the Kenai River sockeye salmon run on July 24; the July 24 analysis predicted a total run to the Kenai River that range of 1.6-4.3 million fish. Sockeye salmon and coho salmon O. kisutch genetic samples were collected from the OTF and archived for future analysis.
Author: Alyssa Frothingham
Publisher:
ISBN:
Category : Fish populations
Languages : en
Pages : 0
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Book Description
In 2019, the southern offshore test fishery was conducted from July 1 to July 30 and captured 1,859 sockeye salmon representing 1,476 CPUE index points, adjusted to 1,931 CPUE postseason. The midpoint of the 2019 sockeye salmon run at the southern offshore test fishery occurred on July 21. A formal inseason estimate of the 2019 run size was made on July 26; this analysis predicted a total run to Upper Cook Inlet of 6.1 million sockeye salmon. The best-fit total run estimate deviated from the estimated total run of 5.2 million fish by 15.9%. An inseason estimate was also made for the Kenai River sockeye salmon run on July 26; the July 26 analysis predicted a total run to the Kenai River ranging between 2.2 and 4.0 million fish. A postseason analysis estimated the 2019 Kenai River total sockeye salmon run to be approximately 3.6 million fish. Finally, sockeye salmon and coho salmon genetic samples were collected and archived for future analysis.
Author: Aaron Dupuis
Publisher:
ISBN:
Category : Fish populations
Languages : en
Pages : 67
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Book Description
In 2015, the southern offshore test fishery (OTF) was conducted from July 1 through July 30 and captured 2,378 sockeye salmon Oncorhynchus nerka representing 1,609 catch per unit of effort (CPUE) index points. The midpoint of the 2015 sockeye salmon run at the southern OTF occurred on 25 July. A formal inseason estimate of the 2015 run size was made on July 27; this analysis predicted a total run to Upper Cook Inlet (UCI) of 5.9 million sockeye salmon. The best-fit total run estimate deviated from the estimated total run of 6.30 million fish by 6.5%. An inseason estimate was also made for the Kenai River sockeye salmon run on July 27; the July 27 analysis predicted a total run to the Kenai River ranging between 2.20 and 3.53 million fish. The best-fit Kenai River total run estimate from this analysis (3.53 million fish) differed from the estimated total run of 3.89 million fish by 9.3%. A mixed stock analysis using genetic data (MSA) was performed on samples collected during the test fishery, which showed similar stock compositions to previous years. The MSA sampling for the OTF project was included all coho salmon O. kisutch captured to estimate spatial and temporal stock compositions of the harvest.
Author: Aaron Wayne Dupuis
Publisher:
ISBN:
Category : Fish populations
Languages : en
Pages : 56
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Book Description
In 2016, the southern offshore test fishery (OTF) conducted from July 1 through July 29 captured 2,155 sockeye salmon Oncorhynchus nerka, which represented 1,792 catch per unit of effort (CPUE) index points. The midpoint of the 2016 sockeye salmon run at the southern OTF occurred on July 18. A formal inseason estimate of the 2016 run size was made on July 25 and this analysis predicted a total run to Upper Cook Inlet (UCI) of 6.83 million sockeye salmon. The best-fit total run estimate deviated from the estimated total run of 5.11 million fish by 33.7%. An inseason estimate was also made for the Kenai River sockeye salmon run on July 25 and this analysis predicted a total run to the Kenai River range of 3.53-5.57 million fish. Sockeye salmon and coho salmon O. kisutch genetic samples were collected and archived for future analysis.
Author: Aaron Dupuis
Publisher:
ISBN:
Category : Fish populations
Languages : en
Pages : 78
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Book Description
This report examines the results of two offshore test fisheries conducted during the 2012 upper Cook Inlet (UCI) commercial salmon fishing season.
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.
Author: Patrick A. Shields
Publisher:
ISBN:
Category : Fish populations
Languages : en
Pages : 54
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Book Description
This report examines the results of a test fishery which was conducted during the 2009 upper Cook Inlet (UCI) commercial salmon fishery. The primary objective of the test fishery was to estimate the abundance and timing of the sockeye salmon Oncorhynchus nerka UCI run.
Author: Patrick A. Shields
Publisher:
ISBN:
Category : Fish populations
Languages : en
Pages : 50
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Book Description
This report examines the results of a test fishery which was conducted during the 2005 upper Cook Inlet (UCI) commercial salmon fishery. The primary objective of the test fishery was to estimate the abundance and timing of the sockeye salmon, Oncorhynchus nerka, run, as measured along a transect near the southern boundary of the UCI management area. The test fishery was conducted from 1 July to 30 July and provided valuable data used to aid in critical inseason commercial fishery management decisions.
Author: Aaron Dupuis
Publisher:
ISBN:
Category : Fish populations
Languages : en
Pages : 88
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Book Description
During the 2013 Upper Cook Inlet (UCI) commercial salmon fishing season, 2 offshore test fisheries (OTF) were conducted using drift gillnets. The southern OTF originates on the east side of Cook Inlet near Anchor Point and has been operational since 1979. Its objective is to assess the size and timing of the sockeye salmon Oncorhynchus nerka run entering UCI, including the Kenai River, during the commercial salmon fishing season. In 2013, the southern OTF occurred from 1 July through 30 July and captured 2,020 sockeye salmon representing 1,342 catch per unit of effort index points. Due to adverse weather conditions and mechanical difficulties 1 or more stations were not fished during 8 days and no fishing occurred on 3 days. Most of the missed stations occurred near the traditional peak of the sockeye salmon run. Because of the timing and relatively high number of missed stations, no formal inseason estimates of the size and timing of the 2013 sockeye salmon run were made using OTF data. A mixed stock analysis using genetic data (MSA) was performed on samples collected during the test fishery, which showed similar stock compositions to previous years. A second UCI northern test fishery, which began in 2012, was continued in 2013 to assess the potential of spatial and temporal separation of Susitna River sockeye salmon migrating through Cook Inlet using MSA. The northern OTF is located in the northern area of the Central District with the transect running across UCI from the Blanchard Line to the Drift River. In 2013, the northern OTF operated from July 1 through July 30 and captured 3,333 sockeye salmon. In 2013, the MSA sampling for both OTF projects were expanded to include all coho salmon O. kisutch captured to identify spatial and temporal stock compositions of the harvest.
Author: Patrick A. Shields
Publisher:
ISBN:
Category : Fish populations
Languages : en
Pages : 59
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Book Description
This report examines the results of a test fishery which was conducted during the 2011 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.
