Download or read book Stock Interrelationships of Sockeye Salmon Runs Alitak Bay District Kodiak Island Alaska written by Charles Orrin Swanton and published by . This book was released on 1992 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Estimated Run Timing of Selected Sockeye Salmon Stocks on the West and East Sides of Kodiak Island written by Bruce M. Barrett and published by . This book was released on 1994 with total page 53 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Salmon from Kodiak written by Patricia Roppel and published by . This book was released on 1986 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A History of Sockeye Salmon Research Karluk River System Alaska 1880 2010 written by Richard Gard and published by . This book was released on 2014 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research in Fisheries written by University of Washington. School of Fisheries and published by . This book was released on 1991 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Estimated Incidence of Upper Station Late Run Sockeye Salmon in the Alitak Bay District Inner Akalura Section Fishery of 20 August 1992 written by Patricia A. Roche and published by . This book was released on 1992 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report to the Alaska Board of Fisheries on the Stock Composition of Sockeye Salmon Catches Within East Side Bristol Bay Fishing Districts 1983 1995 written by Jim Menard and published by . This book was released on 1997 with total page 159 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stock composition estimates derived from scale pattern analyses of 1983-1995 sockeye salmon Oncorhynchus nerka commercial harvests in Naknek-Kvichak, Egegik, and Ugashik Districts, Bristol Bay, Alaska, were summarized and compared. Most sockeye salmon harvested in each fishing district originated from rivers within that district. However, interception of outside stocks occurred in every district. Interception rates in Ugashik (13 % to 47 %) and Egegik (8 % to 43 %) Districts have been higher than in Naknek-Kvichak District (
Download or read book Canadian Journal of Fisheries and Aquatic Sciences written by and published by . This book was released on 2000 with total page 888 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stock Assessment of Sockeye Salmon in the Buskin River 2018 2021 written by Mark J. Witteveen and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Stock Assessment of Sockeye Salmon of Buskin River 2004 2006 written by Julia S. Schmidt and published by . This book was released on 2007 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Historical Data on the Sockeye Salmon Runs to the Nushagak District Bristol Bay Alaska written by University of Washington. Fisheries Research Institute and published by . This book was released on 1967 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Genetic Baseline of North American Sockeye Salmon for Mixed Stock Analyses of Kodiak Management Area Commercial Fisheries 2014 2016 written by Kyle Shedd and published by . This book was released on 2016 with total page 233 pages. Available in PDF, EPUB and Kindle. Book excerpt: Precise, accurate estimates of stock-specific harvests of sockeye salmon (Oncorhynchus nerka) are lacking for commercial fisheries in the Kodiak Management Area (KMA. Such information would be useful for reconstructing runs, building accurate brood tables to define escapement goals, and refining management by identifying spatial and temporal harvest patterns of local and non-local stocks. Hence, the department developed a genetic baseline for mixed-stock analysis (MSA) to estimate the stock compositions of sockeye salmon harvests in select KMA commercial salmon fisheries from 2014-2016. This report describes the methodology used to build a baseline, examines costs and benefits of a reduced marker set, describes the performance of the baseline for MSA, and provides guidance on how to interpret biases documented in the MSA tests when evaluating future stock composition estimates of KMA fishery mixtures. This genetic baseline uses single nucleotide polymorphism (SNP) markers and builds on the Western Alaska Salmon Stock Identification Project (WASSIP) sockeye salmon baseline to include additional populations in KMA and extends coverage south from Cape Suckling, Alaska to the Columbia River, Washington. The final baseline contains 65,332 individuals from 762 collections representing 473 populations in 15 reporting groups. Mean population sample size was 138 individuals. We used 2 types of tests to measure the baseline’s ability to correctly allocate to reporting groups: 100% proof tests and fishery scenario tests. Correct allocations for 100% proof tests averaged 98.2%, ranged from 80.4% to 99.6%, and 73 of the 75 proof tests met our goal of 90% correct allocation. Fishery scenario tests did not indicate any consistent directional biases among reporting groups, but misallocation was observed between Frazer and Ayakulik. Reducing the baseline from 96 to 48 SNPs had negligible effects on MSA estimates. This baseline will provide accurate and precise estimates of stock composition in KMA sockeye salmon fisheries.
Download or read book Genetic Stock Composition of the Commercial Harvest of Sockeye Salmon in Bristol Bay Alaska 2009 written by Tyler H. Dann and published by . This book was released on 2011 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Bristol Bay Management Area supports the largest sockeye salmon Oncorhynchus nerka fishery in the world. Alaska Department of Fish and Game is responsible for managing fisheries under the sustained-yield principle. Sockeye salmon stocks in Bristol Bay can be exploited at rates up to 80%, so accurately estimating the stock composition of catch is critical to determining the total run (catch and escapement) of each stock. Accurate estimates of total runs are vital for managing under the sustained-yield principle because they provide the basis for establishing and meeting escapement goals. In recent years, the department has developed a genetics program for sockeye salmon in Bristol Bay to develop and apply genetics methods to identify the stock composition of commercial catch in the five commercial fishing districts. Here we present genetic results from 2009, compare them to results from 2006 through 2008, and to those based on traditional age-based methods"--P. 1.
Download or read book Genetic Stock Composition of the Commercial Harvest of Sockeye Salmon in Kodiak Management Area 2014 2016 written by Kyle Shedd and published by . This book was released on 2016 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: The commercial salmon fishery in the Kodiak Management Area (KMA), Westward Region, is regulated by 10 board-approved management plans intended to preserve traditional harvest opportunities while maintaining the biological integrity of KMA (local) salmon stocks and alleviating allocative concerns. Precise, accurate estimates of stock-specific harvests of sockeye salmon (Oncorhynchus nerka) are lacking for commercial fisheries in KMA. Such information would be useful for reconstructing runs, building accurate brood tables to define escapement goals, and refining management by identifying spatial and temporal harvest patterns of local and nonlocal stocks. Genetic samples were collected for mixed stock analysis (MSA) to estimate the stock compositions of sockeye salmon harvests in select KMA commercial salmon fisheries from June through August from 2014 to 2016. A total of 45,165 sockeye salmon tissue samples were collected from 6 sampling areas in KMA. Of these, 18,558 samples were ultimately genotyped to represent 47 spatiotemporal strata. Stock compositions were estimated with MSA for all strata using a comprehensive, coastwide sockeye salmon baseline with important local stocks defined as separate reporting groups. Local, Kodiak sockeye salmon contributed 88%, 58%, and 58% of the annual KMA harvests sampled for MSA during 2014--2016 (excluding harvests after August 29, or outside of the areas sampled). During this period, there was significant, nonlocal harvest of Cook Inlet sockeye salmon in all 3 years, containing 8%, 37%, and 30% of the sampled KMA harvest, as well as harvest of Chignik sockeye salmon in 2016, containing 10% of the sampled KMA harvest. These results provide the most comprehensive estimates of stock composition and stock-specific harvests of sockeye salmon in KMA, supplement previous studies, and should inform fishery management, regulatory, and policy decision makers.
Download or read book Stock Assessment of Sockeye Salmon in the Buskin River 2014 2017 written by Mark J. Witteveen and published by . This book was released on 2018 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Stock composition of sockeye salmon catches in southeast Alaska District 111 and the Taku River 1989 estimated with scale pattern analysis written by Kathleen A. Jensen and published by . This book was released on 1993 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Operational Plan written by Nicole L. Zeiser and published by . This book was released on 2020 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Chilkoot Lake sockeye salmon (Oncorhynchus nerka) run, which spawns near Haines, is one of the largest in Southeast Alaska and contributes substantially to harvests in the District 15 commercial drift gillnet fishery in Lynn Canal. This operational plan outlines objectives, methods, and timelines for conducting sockeye salmon stock assessment designed to (1) estimate annual escapement and harvest, (2) provide information for inseason fishery management, and (3) reconstruct runs and assess stock status. The Chilkoot Lake run is managed for a biological escapement goal of 38,000–86,000 fish, which is enumerated through a standard picket weir located just downstream of the lake outlet. Weir counts of sockeye salmon are compared to weekly escapement targets to determine inseason run strength. Genetic mixed stock analysis of weekly sockeye salmon harvests in the District 15 commercial drift gillnet fishery provides stock composition estimates that also guide inseason management of the fishery. Biological sampling, along with escapement enumeration and stock-specific harvest data, allows for total run reconstruction required for escapement goal review.
