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Estimating Escapement Of Western Alaskan Sockeye Salmon For Western Alaska Salmon Stock Identification Program Reporting Groups 2006 To 2008
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Book Synopsis Estimating Escapement of Western Alaskan Sockeye Salmon for Western Alaska Salmon Stock Identification Program Reporting Groups, 2006 to 2008 by : Douglas Murrell Eggers
Download or read book Estimating Escapement of Western Alaskan Sockeye Salmon for Western Alaska Salmon Stock Identification Program Reporting Groups, 2006 to 2008 written by Douglas Murrell Eggers and published by . This book was released on 2012 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Western Alaska Salmon Stock Identification Program (WASSIP) was initiated in 2006 with a memorandum of understanding executed by an Advisory Panel of 11 signatories, including Alaska Department of Fish and Game, and stakeholders from throughout western Alaska. The purpose of WASSIP was to identify stock contributions of sockeye (Oncorhynchus nerka) and chum salmon (O. keta) to commercial and subsistence fisheries from Chignik northward to Kotzebue Sound, and to extend those estimates to stock-specific harvest rates. This report describes the regional fishery model and estimation of escapement and harvest rates for sockeye salmon. Escapements and associated uncertainties were estimated for each of the WASSIP sockeye salmon regional reporting groups (Chignik, South Peninsula, North Peninsula, Bristol Bay, Kuskokwim Bay), and subregional reporting groups (i.e., stocks). The 2006 to 2008 escapement estimates were based on information available in annual area management reports, other monitoring and assessment reports, and department databases.
Book Synopsis Estimating Escapement of Western Alaska Chum Salmon for Western Alaska Salmon Stock Identification Program Reporting Groups, 2007 to 2009 by : Douglas Murrell Eggers
Download or read book Estimating Escapement of Western Alaska Chum Salmon for Western Alaska Salmon Stock Identification Program Reporting Groups, 2007 to 2009 written by Douglas Murrell Eggers and published by . This book was released on 2012 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Western Alaska Salmon Stock Identification Program (WASSIP) was initiated in 2006 with a memorandum of understanding executed by an Advisory Panel of 11 signatories, including Alaska Department of Fish and Game, and stakeholders from throughout western Alaska. The purpose of WASSIP was to identify stock contributions of sockeye (Oncorhynchus nerka) and chum salmon (O. keta) to commercial and subsistence fisheries from Chignik northward to Kotzebue Sound, and to extend those estimates to stock-specific harvest rates. This report describes the regional fishery model and estimation of escapement and harvest rates for chum salmon. Escapements and associated uncertainties were estimated for each of the WASSIP chum salmon regional reporting groups (Chignik/Kodiak, South Peninsula, Northwest District, Northern District, Coastal Western Alaska, Upper Yukon River, Kotzebue Sound; i.e., stocks). The 2007 to 2009 escapement estimates were based on information available in annual area management reports, other monitoring and assessment reports, and department databases.
Book Synopsis Stock Composition of Sockeye Salmon Harvests in Fisheries of the Western Alaska Salmon Stock Identification Program (WASSIP), 2006-2008 by : Tyler H. Dann
Download or read book Stock Composition of Sockeye Salmon Harvests in Fisheries of the Western Alaska Salmon Stock Identification Program (WASSIP), 2006-2008 written by Tyler H. Dann and published by . This book was released on 2012 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: Uncertainty about the magnitude, frequency, location, and timing of stock-specific sockeye and chum salmon harvest in Western Alaska fisheries was the impetus for the Western Alaska Salmon Stock Identification Program (WASSIP). The program was designed to use genetic data in mixed stock analysis of fisheries samples to more clearly describe harvest patterns of sockeye and chum salmon stocks in western Alaska fisheries (from Chignik Area to Kuskokwim Area for sockeye salmon). Stock composition estimates for temporal strata across fisheries are required to estimate stock-specific harvest numbers and rates. This report describes the methodology used to estimate stock compositions for sockeye salmon, presents stock composition estimates, and provides guidance on how to interpret biases documented in the genetic baseline.
Book Synopsis Harvest and Harvest Rates of Sockeye Salmon Stocks in Fisheries of the Western Alaska Salmon Stock Identification Program (WASSIP), 2006-2008 by : Christopher Habicht
Download or read book Harvest and Harvest Rates of Sockeye Salmon Stocks in Fisheries of the Western Alaska Salmon Stock Identification Program (WASSIP), 2006-2008 written by Christopher Habicht and published by . This book was released on 2012 with total page 751 pages. Available in PDF, EPUB and Kindle. Book excerpt: Uncertainty about the magnitude, frequency, location, and timing of stock-specific sockeye and chum salmon harvest in western Alaska fisheries was the impetus for the Western Alaska Salmon Stock Identification Program (WASSIP). The program was designed to use genetic data in mixed stock analysis (MSA) of fisheries samples to more clearly describe harvest patterns of sockeye and chum salmon stocks in western Alaska fisheries. This report reviews the history of WASSIP, summarizes the memorandum of understanding as the guiding document for the program, and reviews participation and contributions of the Advisory Panel and Technical Committee to the program. Brief descriptions of WASSIP sockeye fisheries are provided and previous sockeye tagging and stock identification studies are reviewed. We describe the methodology used to estimate stock-specific harvests and harvest rates for sockeye salmon, report these estimates, and provide guidance on interpretation of results. These results provide the most comprehensive examination of stock-specific harvest and harvest rates across western Alaska sockeye salmon fisheries ever attempted.
Book Synopsis Age Composition of Sockeye Salmon Sampled as Part of the Western Alaska Salmon Stock Identification Program Within Westward Region Commercial Fisheries, 2006-2008 by : M. Birch Foster
Download or read book Age Composition of Sockeye Salmon Sampled as Part of the Western Alaska Salmon Stock Identification Program Within Westward Region Commercial Fisheries, 2006-2008 written by M. Birch Foster and published by . This book was released on 2014 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Western Alaska Salmon Stock Identification Program (WASSIP) was conducted to determine stock origin of chum salmon and sockeye salmon in commercial fisheries of western Alaska. Concurrent sampling of sockeye salmon scales was conducted in a limited portion of areas from Chignik Area (Area L) fishery and North Alaska Peninsula (Area M) fishery. These sampled areas lie on the north and south sides of the Alaska Peninsula in the Port Moller, Chignik and Port Heiden areas.
Book Synopsis Sockeye Salmon Baseline for the Western Alaska Salmon Stock Identification Project by : Tyler H. Dann
Download or read book Sockeye Salmon Baseline for the Western Alaska Salmon Stock Identification Project written by Tyler H. Dann and published by . This book was released on 2012 with total page 121 pages. Available in PDF, EPUB and Kindle. Book excerpt: Uncertainty about the magnitude, frequency, location, and timing of the nonlocal harvest of sockeye and chum salmon in Western Alaska fisheries was the impetus for the Western Alaska Salmon Stock Identification Project (WASSIP). The project was designed to use genetic data in mixed stock analysis (MSA) to reduce this uncertainty. A baseline of allele frequencies is required for use in mixed stock analysis to estimate the stock of origin of harvested fish. This report describes the methodology we used to understand the population genetic structure and build a baseline for use in MSA, 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 WASSIP mixtures.
Book Synopsis Harvest and Harvest Rates of Chum Salmon Stocks in Fisheries of the Western Alaska Salmon Stock Identification Program (WASSIP), 2007-2009 by : Andrew Roy Munro
Download or read book Harvest and Harvest Rates of Chum Salmon Stocks in Fisheries of the Western Alaska Salmon Stock Identification Program (WASSIP), 2007-2009 written by Andrew Roy Munro and published by . This book was released on 2012 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt: Uncertainty about the magnitude, frequency, location, and timing of stock-specific sockeye and chum salmon harvest in western Alaska fisheries was the impetus for the Western Alaska Salmon Stock Identification Program (WASSIP). The program was designed to use genetic data in mixed stock analysis (MSA) of fisheries samples to more clearly describe harvest patterns of sockeye and chum salmon stocks in western Alaska fisheries. This report reviews the history of WASSIP, summarizes the memorandum of understanding as the guiding document for the program, and reviews participation and contributions of the Advisory Panel and Technical Committee to the program. Brief descriptions of WASSIP sockeye fisheries are provided and previous sockeye tagging and stock identification studies are reviewed. We describe the methodology used to estimate stock-specific harvests and harvest rates for sockeye salmon, report these estimates, and provide guidance on interpretation of results. These results provide the most comprehensive examination of stock-specific harvest and harvest rates across western Alaska sockeye salmon fisheries ever attempted.
Book Synopsis Stock Composition of Chum Salmon Harvests in Fisheries of the Western Alaska Salmon Stock Identification Program (WASSIP), 2007-2009 by : William D. Templin
Download or read book Stock Composition of Chum Salmon Harvests in Fisheries of the Western Alaska Salmon Stock Identification Program (WASSIP), 2007-2009 written by William D. Templin and published by . This book was released on 2012 with total page 133 pages. Available in PDF, EPUB and Kindle. Book excerpt: Uncertainty about the magnitude, frequency, location, and timing of stock-specific sockeye and chum salmon harvest in western Alaska fisheries was the impetus for the Western Alaska Salmon Stock Identification Program (WASSIP). The program was designed to use genetic data for mixed stock analysis (MSA) of fisheries samples to more clearly describe harvest patterns of chum and sockeye salmon stocks in western Alaska fisheries. Stock composition estimates for temporal strata across fisheries are required to estimate stock-specific harvest numbers and rates. This report describes the methods used to estimate stock compositions for chum salmon, presents stock composition estimates, and provides guidance on how to interpret biases documented in MSA baseline tests when evaluating stock composition estimates of WASSIP catch samples.
Book Synopsis Results from Sampling the 2006-2009 Commercial and Subsistence Fisheries in the Western Alaska Salmon Stock Identification Project by :
Download or read book Results from Sampling the 2006-2009 Commercial and Subsistence Fisheries in the Western Alaska Salmon Stock Identification Project written by and published by . This book was released on 2011 with total page 237 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Western Alaska Salmon Stock Identification Project (WASSIP) was initiated in 2006 with a memorandum of understanding executed by an Advisory Panel of 11 signatories, including Alaska Department of Fish and Game, and stakeholders from throughout western Alaska. The Advisory Panel also includes a federal representative. The purpose of WASSIP is to provide a mechanism for participants to engage in a collaborative decision-making process to expend allocated funds for the purposes of identifying the stock contributions of western Alaska sockeye and chum salmon to fisheries in and around western Alaska. The Advisory Panel approved a catch sampling plan and the Alaska Department of Fish and Game implemented comprehensive sampling of chum Oncorhynchus keta and sockeye O. nerka salmon caught in most commercial and subsistence salmon fisheries in marine and estuarine areas of western Alaska where catches of chum or sockeye salmon occurred from 2006 to 2009. For WASSIP, western Alaska represents a broad geographic region including areas inland and within state-managed marine waters from Kilokak Rocks (eastern end of Chignik Area) southwest along the coast to Scotch Cap (Unimak Pass) and from Scotch Cap north along the coast to Point Hope (northern end of Kotzebue Area). This report summarizes results of fisheries sampling in the WASSIP area from 2006 to 2009. We include summaries of estimated catch (harvest), samples collected, and samples intended for DNA analysis by strata organized by geography, species, year, and temporally within years.
Book Synopsis Genetic Baseline of North American Sockeye Salmon for Mixed Stock Analyses of Kodiak Management Area Commercial Fisheries, 2014-2016 by : Kyle Shedd
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.
Book Synopsis Western Alaska Salmon Investigations by : Harry L. Rietze
Download or read book Western Alaska Salmon Investigations written by Harry L. Rietze and published by . This book was released on 1957 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Genetic Stock Identification of Upper Cook Inlet Sockeye Salmon Harvest, 2012-2013 by : Andrew W. Barclay
Download or read book Genetic Stock Identification of Upper Cook Inlet Sockeye Salmon Harvest, 2012-2013 written by Andrew W. Barclay and published by . This book was released on 2017 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mixed stock analysis based on genetic data has been used to estimate the stock compositions of sockeye salmon Oncorhynchus nerka harvested in commercial fisheries in Upper Cook Inlet (UCI), Alaska, since 2005. Here we report the genetic mixed stock analysis samples representing 99% of the 2012 and 2013 UCI commercial fishery harvests. Postseason analyses were performed using a previously reported baseline of 69 populations and 96 single nucleotide polymorphic markers, with the addition of 2 populations in the West reporting group (Harriet Creek and Packers Lake late run). Stock composition patterns in the commercial fishery were similar to previous years: eastern fisheries generally captured more Kenai and Kasilof rivers fish than western and northern fisheries; and gillnet fisheries closer to the Kenai or Kasilof river mouths harvested larger proportions of fish from those rivers. In 2012, however, the majority of Kasilof fish were harvested in the drift gillnet fisheries due to restrictions on the set gillnet fishery. Most stocks contributed similar proportions to the overall harvest in the UCI fishery compared to previously reported years, but Fish and Kasilof stocks were 38-86% below average and Susitna/Yentna River stocks were 19-77% above average. In 2013, 2 additional drift gillnet samples were analyzed to compare harvests in the Kenai and Kasilof expanded corridor (July 11) with the districtwide harvest (July 8). Kenai and Kasilof estimates were higher in the corridor sample than the districtwide sample, whereas estimates for the remaining reporting groups were generally lower, but these differences were not significant and could be attributed to the difference in sampling date. Estimates of stock-specific harvests for UCI commercial fisheries in 2012 and 2013 build upon previous years in refining understanding of productivity and the effect of management actions on the stock composition of commercial sockeye salmon harvests.
Book Synopsis A Comprehensive Review of Chilkat Lake and River Sockeye Salmon Stock Assessment Studies by : Julie Bednarski
Download or read book A Comprehensive Review of Chilkat Lake and River Sockeye Salmon Stock Assessment Studies written by Julie Bednarski and published by . This book was released on 2017 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since 1967 the Alaska Department of Fish and Game, Division of Commercial Fisheries, has operated a stock assessment program to estimate escapements and harvests of Chilkat sockeye salmon (Oncorhynchus nerka). Sockeye salmon were counted through a weir near the outlet of Chilkat Lake, and age, length, and sex data were collected and analyzed each year. Since 1994, mark-recapture studies were conducted to estimate Chilkat sockeye salmon escapements. Since the start of the 2008 season, DIDSON sonar has been used at the weir site to directly enumerate adult sockeye salmon escapement into Chilkat Lake. Visual scale pattern analysis was conducted to determine the proportion of Chilkat sockeye salmon harvested annually in the District 15 commercial drift gillnet fishery. In addition, limnological sampling was conducted in Chilkat Lake and analyzed each year. The intent of this report was to review Chilkat sockeye salmon stock assessment data from 1971 to 2016. The visual and DIDSON weir counts provide an index of escapement; however concerns regarding mark-recapture as a reliable index of abundance lead us to recommend eliminating mark-recapture studies in 2017 and, instead, maintain the DIDSON to estimate escapement into Chilkat Lake. We also recommend reviewing the current Chilkat Lake biological escapement goal to ensure that the goal and escapement estimates are in the same units, which is currently based on mark-recapture units. An average of 77,800 Chilkat Lake sockeye salmon were harvested annually in the District 15 commercial drift gillnet fishery (1976-2016). A comparison of historical fish wheel counts to Chilkat Lake escapement estimates demonstrates that the fish wheel project provides a rough indication of Chilkat Lake run strength. Zooplankton samples from Chilkat Lake were composed primarily of one species of copepod (Cyclops columbianus) and three species of cladocerans (Bosmina longerostris, Daphnia longiremus, and Daphnia rosea).
Book Synopsis Western Alaska Salmon Investigations by : Richard R. Straty
Download or read book Western Alaska Salmon Investigations written by Richard R. Straty and published by . This book was released on 1958 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Operational Plan: McDonald Lake Sockeye Salmon Stock Assessment, 2021-2023 by : Andrew W. Piston
Download or read book Operational Plan: McDonald Lake Sockeye Salmon Stock Assessment, 2021-2023 written by Andrew W. Piston and published by . This book was released on 2021 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: The primary purpose of this project is to provide an estimate of the sockeye salmon escapement at McDonald Lake by conducting foot surveys on the spawning grounds at Hatchery Creek. We will also estimate the adult age composition of the escapement. Using results from a Pacific Salmon Treaty genetic stock identification project, we will estimate the contribution of McDonald Lake sockeye salmon to southern Southeast Alaska commercial net fisheries. This project also includes a fall hydroacoustic survey to estimate rearing juvenile sockeye salmon abundance.
Book Synopsis Preliminary Harvest Rates of Western Alaska and Alaska Peninsula Chum Salmon Stocks in South Alaska Peninsula Fisheries, 2022 by : Alaska. Department of Fish and Game
Download or read book Preliminary Harvest Rates of Western Alaska and Alaska Peninsula Chum Salmon Stocks in South Alaska Peninsula Fisheries, 2022 written by Alaska. Department of Fish and Game and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document provides preliminary harvest rate estimates of western Alaska and Alaska Peninsula stocks in the 2022 South Alaska Peninsula commercial fisheries. The methods used in the Western Alaska Salmon Stock Identification Program (WASSIP) study were followed as closely as possible and deviations are described. These results supplement previous studies and may be useful to inform fishery management and the regulatory process.
Book Synopsis Salmon Escapement Estimation in Alaska by : Harold J. Geiger
Download or read book Salmon Escapement Estimation in Alaska written by Harold J. Geiger and published by . This book was released on 1995 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: Escapement estimation in Alaska is decentralized, and local biologists use their own judgment to select estimation methods appropriate for the local situation. Alaska has no standardized database or method for escapement estimation. Methods fall into five categories, which are discussed. General principles and rules that have guided most biologists are discussed.
