Download or read book Kuskokwim River Chum Salmon Run Reconstruction written by Brian Bue and published by . This book was released on 2008 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal of this project was to reconstruct the chum salmon Oncorhynchus keta run to the Kuskokwim River for the years 1976 to 2007 with sufficient accuracy and precision to allow for the estimation of productivity on a drainage-wide basis.
Download or read book Kuskokwim River Chinook Salmon Run Reconstruction 2015 written by Zachary W. Liller and published by . This book was released on 2016 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: Because it is not possible to count all chinook salmon that return to the Kuskokwim River, estimates of annual abundance and escapement are made using a maximum likelihood model. The model was used to estimate the 2015 drainage-wide runs size. This report discusses the model inputs, model results, uncertainty of the estimates, and conclusions of the reconstruction model.
Download or read book 2022 Kuskokwim River Chinook Salmon Run Reconstruction and 2023 Forecast written by Sean D. Larson and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A maximum likelihood model was used to estimate the 2022 drainagewide run size and escapement of Kuskokwim River Chinook salmon (Oncorhynchus tshawytscha). The total run was estimated to be 142,495 (95% CI: 107,579–188,743) fish, and escapement was estimated to be 107,980 (95% CI: 73,064–154,228) fish. Model estimates were informed by direct observations of the 2022 escapement at 3 weirs and 2022 harvest, combined with historical observations of escapement (up to 6 weirs and 14 aerial surveys), harvest, test fishery, and mark–recapture data dating back to 1976. Model results are adequate to draw broad conclusions about the 2022 run and escapement. The 2022 total run of Chinook salmon was below the 1976–2021 average of 211,081 fish. The drainagewide sustainable escapement goal of 65,000–120,000 was met in 2022. The 2022 Kuskokwim River Chinook salmon forecast is for a range of 115,000–170,000 fish.
Download or read book Developing a Research and Restoration Plan for Arctic Yukon Kuskokwim Western Alaska Salmon written by National Research Council and published by National Academies Press. This book was released on 2005-07-06 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent declines in the abundance of salmon in the Arctic-Yukon-Kuskokwim (AYK) region of western Alaska have created hardships for the people and communities who depend on this resource. In 2002, the AYK Sustainable Salmon Initiative (SSI) was created to undertake research to understand the reasons for this decline and to help support sustainable management in the region. This report makes recommendations for developing the research that the AYK SSI science plan should be based on, and relates the development of a restoration plan to the results of that research.
Download or read book 2021 Kuskokwim River Chinook Salmon Run Reconstruction and 2022 Forecast written by Sean D. Larson and published by . This book was released on 2022 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: A maximum likelihood model was used to estimate the 2021 drainagewide run size and escapement of Kuskokwim River Chinook salmon (Oncorhynchus tshawytscha). The total run was estimated to be 129,751 (95% CI: 94,489–178,171) fish and escapement was estimated to be 101,000 (95% CI: 65,738–149,420) fish. Model estimates were informed by direct observations of the 2021 escapement at 3 weirs and 2021 harvest, combined with historical observations of escapement (up to 6 weirs and 14 aerial surveys), harvest, test fishery, and mark–recapture data dating back to 1976. Model results are adequate to draw broad conclusions about the 2021 run and escapement. The 2021 total run of Chinook salmon was below the 1976–2020 average of 214,475 fish. The drainagewide sustainable escapement goal of 65,000–120,000 was met in 2021. The 2022 Kuskokwim River Chinook salmon forecast is for a range of 99,000–161,000 fish.
Download or read book 2019 Kuskokwim River Chinook Salmon Run Reconstruction and 2020 Forecast written by Sean D. Larson and published by . This book was released on 2020 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: A maximum likelihood model was used to estimate the 2019 drainagewide run size and escapement of Kuskokwim River Chinook salmon (Oncorhynchus tshawytscha). Total run and escapement were estimated to be 226,987 (95% CI: 182,811–281,839) and 188,483 (95% CI: 144,307–243,335) fish, respectively. Model estimates were informed by direct observations of the 2019 escapement at 16 locations (4 weirs and 12 aerial surveys) and harvest, combined with historical observations of escapement (up to 6 weirs and 14 aerial surveys), harvest, test fishery, and mark–recapture data dating back to 1976. Model results are adequate to draw broad conclusions about the 2019 run and escapement. The 2019 total run of Chinook salmon was the largest since 2007 and was probably above the 1976–2018 average of 215,529 fish. The drainagewide sustainable escapement goal of 65,000–120,000 was exceeded in 2019. The 2020 Kuskokwim River Chinook salmon forecast is for a range of 193,000–261,000 fish.
Download or read book 2020 Kuskokwim River Chinook Salmon Run Reconstruction and 2021 Forecast written by Sean D. Larson and published by . This book was released on 2021 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: A maximum likelihood model was used to estimate the 2020 drainagewide run size and escapement of Kuskokwim River Chinook salmon (Oncorhynchus tshawytscha). The total run was estimated to be 124,486 fish (95% CI: 102,661–150,952) and escapement was estimated to be 88,285 fish (95% CI: 66,460–114,751). Model estimates were informed by direct observations of the 2020 escapement at 15 locations (3 weirs and 12 aerial surveys) and harvest, combined with historical observations of escapement (up to 6 weirs and 14 aerial surveys), harvest, test fishery, and mark–recapture data dating back to 1976. Model results are adequate to draw broad conclusions about the 2020 run and escapement. The 2020 total run of Chinook salmon was below the 1976–2019 average of 215,870 fish. The drainagewide sustainable escapement goal of 65,000–120,000 was met in 2020. The 2021 Kuskokwim River Chinook salmon forecast is for a range of 94,000–155,000 fish.
Download or read book La Saison de Versailles 1661 1923 written by and published by . This book was released on 19?? with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Kogrukluk River Salmon Studies 2006 written by Zachary W. Liller and published by . This book was released on 2008 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Kogrukluk River is located in the upper Holitna River basin, which is a major tributary of the Kuskokwim River, and produces chinook salmon Oncorhynchus tshawytscha, chum salmon O. keta, sockeye salmon O. nerka, and coho salmon O. kisutch that contribute to intensive subsistence and commercial salmon fisheries downstream. The Kogrukluk River weir is one of several projects operated in the Kuskokwim Area that form an integrated geographic array of escapement monitoring projects. Collectively, and in accordance with the State of Alaska's Policy for the Management of Sustainable Salmon Fisheries (5 AAC 39.222), this array of projects provides the means to assess escapement trends, which should be monitored consistently and considered in harvest management decisions. Towards this end, Kogrukluk River weir has been operated annually since 1976 to determine daily and total salmon escapements of returning salmon species; to estimate age, sex, and length compositions of Chinook, chum, and coho salmon escapement; to monitor environmental variables that influence salmon productivity; and to contribute to an integrated platform in support of other Kuskokwim Area fisheries projects. In 2006, a fixed-picket weir was operated on the Kogrukluk River from 29 June through 14 September, with a total of 13 inoperable days. In addition to enumerating escapement and estimating ASL composition, the weir served as a platform for several other projects including: Inriver Abundance of Chinook Salmon in the Kuskokwim River, Kuskokwim River Chinook Salmon Run Reconstruction, Kuskokwim River Sockeye Salmon Investigations, Kuskokwim River Salmon Mark-Recapture Project, and collection of pink salmon O. gorbuscha and Dolly Varden Salvelinus malma genetic tissue.
Download or read book Kogrukluk River Salmon Studies 2007 written by Derick L. Williams and published by . This book was released on 2008 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Kogrukluk River produces Chinook salmon Oncorhynchus tshawytscha, chum salmon O. keta, sockeye salmon O. nerka, and coho salmon O. kisutch that contribute to intensive subsistence and commercial salmon fisheries downstream. Located in the upper Holitna River basin, which is a major tributary of the Kuskokwim River, the Kogrukluk River weir is one of several projects operated in the Kuskokwim Area that form an integrated geographic array of escapement monitoring projects. Collectively, and in accordance with the State of Alaska's Policy for the Management of Sustainable Salmon Fisheries (5 AAC 39.222), this array of projects provides the means to assess escapement trends that must be monitored and considered in harvest management decisions. Towards this end, the Kogrukluk River weir has been operated annually since 1976 to determine daily and total salmon escapements of returning salmon species; to estimate age, sex, and length compositions of Chinook, chum, and coho salmon escapement; to monitor environmental variables that influence salmon productivity; and to contribute to an integrated platform in support of other Kuskokwim Area fisheries projects. In 2007, a fixed-picket weir was operated on the Kogrukluk River from 26 June through 23 September, with a total of 24 inoperable days. In addition to enumerating escapement and estimating ASL composition, the weir served as a platform for other projects, including Kuskokwim River Chinook Salmon Run Reconstruction and Kuskokwim River Sockeye Salmon Investigations. Furthermore, the weir project served as a sampling location for the collection of pink salmon (O. gorbuscha) and Dolly Varden (Salvelinus malma) genetic tissue.
Download or read book Characterization of the 2011 Salmon Run in the Kuskokwim River Based on the Test Fishery at Bethel written by Douglas G. Bue and published by . This book was released on 2016 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt: Annual abundance indices and run timing of adult Chinook Oncorhynchus tshawytscha, sockeye O. nerka, chum O. keta, and coho O. kisutch salmon returning to the Kuskokwim River have been assessed by the Bethel test fishery since 1984. In 2011, the Bethel test fishery operated from June 1 through August 20. A series of timed drifts using 8.0 inch and 5.375 inch stretched mesh gillnets were made at 3 stations across the river channel. Each series of drifts began approximately 1 hour following each high tide throughout the fishing season. Mean tidal catch per unit effort (CPUE) was calculated for each species and served as an index of abundance. The cumulative mean tidal CPUE was compared to information from earlier years and to the results from the lower Kuskokwim inseason subsistence salmon harvest monitoring project to determine salmon abundance and run timing to help direct subsistence and commercial management decisions. The final cumulative CPUE index through August 20 was: 201 Chinook, 1,517 sockeye, 10,028 chum, and 3,234 coho salmon. Relative abundance indices were below the 2001–2010 average for Chinook, near average for sockeye and coho salmon, and above average for chum salmon. Run timing of Chinook salmon peaked on June 23; sockeye salmon peaked on June 29; chum salmon peaked on July 7; and coho salmon peaked on August 5. Chinook salmon cumulative CPUE indices tracked historical years when escapement goals were not achieved. Sockeye, chum, and coho salmon cumulative CPUE indices tracked historical years when escapement goals were met.
Download or read book Characterization of the 2012 and 2013 Salmon Runs in the Kuskokwim River Based on the Test Fishery at Bethel written by Colton G. Lipka and published by . This book was released on 2016 with total page 67 pages. Available in PDF, EPUB and Kindle. Book excerpt: Annual abundance indices and run timing of adult Chinook Oncorhynchus tshawytscha, sockeye O. nerka, chum O. keta, and coho O. kisutch salmon returning to the Kuskokwim River have been assessed by the Bethel test fishery since 1984. In 2012, the Bethel test fishery operated from June 2 through August 26 and in 2013, from June 1 through August 24. A series of timed drifts using 5.375 inch (13.6 cm) and 8.0 inch (20.3 cm) stretch mesh gillnets were made at 3 stations across the river channel. Each series of drifts began approximately 1 hour following each high tide throughout the fishing season. Mean tidal catch per unit effort (CPUE) was calculated for each species and served as an index of abundance. The cumulative mean tidal CPUE was compared to information from earlier years to determine relative salmon abundance and run timing to help direct subsistence and commercial management decisions. The final cumulative CPUE index for 2012 was: 418 Chinook; 1,171 sockeye; 6,890 chum; and 2,440 coho salmon. The final cumulative CPUE index for 2013 was: 261 Chinook; 1,146 sockeye; 5,708 chum; and 2,865 coho salmon. The 2013 relative abundance indices were below the 2002–2012 averages for all monitored species of salmon. Run timing of Chinook salmon peaked on 26 June in 2012 and on 22 June in 2013; sockeye salmon peaked on 1 July in 2012 and on 28 June in 2013; chum salmon peaked on 7 July during 2012 and 2013; and coho salmon peaked on 11 August in 2012 and on 9 August in 2013.
Download or read book A Mark recapture Study of Kuskokwim River Chinook Sockeye Chum and Coho Salmon 2005 written by Jason A. Pawluk and published by . This book was released on 2006 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stock-specific run timing, stock-specific travel speed, and total coho salmon run abundance were estimated using a two-sample mark-recapture design for sockeye Oncorhynchus nerka, chum O. keta, and coho O. kisutch salmon caught in the Kuskokwim River.
Download or read book A Mark recapture Study of Kuskokwim River Sockeye Chum and Coho Salmon 2004 written by Jason A. Pawluk and published by . This book was released on 2006 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stock-specific run timing, stock-specific travel speed, and total coho salmon run abundance were estimated using a two-sample mark-recapture design for sockeye Oncorhynchus nerka, chum O. keta, and coho O. kisutch salmon caught in the Kuskokwim River.
Download or read book Characterization of the 2004 Salmon Run in the Kuskokwim River Based on Test Fishing at Bethel written by Douglas G. Bue and published by . This book was released on 2006 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: Annual timing and abundance of adult chinook Oncorhynchus tshawytscha, sockeye O. nerka, chum O. keta, and coho O. kisutch salmon returning to the Kuskokwim River have been assessed by the Bethel drift gillnet test fishery since 1984. In 2004, the Bethel salmon test fishery operated from June 1 through August 29. The test fishery was one of the primary information sources used by managers to terminate the subsistence fishing schedule on June 20 and implement a commercial fishery for sockeye and chum salmon on June 30. In late July, the test fishery provided information allowing implementation of a commercial coho salmon fishery on July 28.
Download or read book Characterization of the 2010 Salmon Run in the Kuskokwim River Based on Test Fishing at Bethel written by Douglas G. Bue and published by . This book was released on 2012 with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt: Annual abundance indices and run timing of adult Chinook Oncorhynchus tshawytscha, sockeye O. nerka, chum O. keta, and coho O. kisutch salmon returning to the Kuskokwim River have been assessed by the Bethel drift gillnet test fishery since 1984. In 2010, the Bethel salmon test fishery operated from June 1 through August 24. The test fishery was one of the primary information sources used by managers to help direct subsistence and commercial management decisions.
