Assessment of Sockeye and Pink Salmon Stocks in the Northern Boundary Area Using Run Reconstruction Techniques, 1982-95 PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Assessment of Sockeye and Pink Salmon Stocks in the Northern Boundary Area Using Run Reconstruction Techniques, 1982-95 PDF full book. Access full book title Assessment of Sockeye and Pink Salmon Stocks in the Northern Boundary Area Using Run Reconstruction Techniques, 1982-95 by Canada. Department of Fisheries and Oceans. Download full books in PDF and EPUB format.
Author: Canada. Department of Fisheries and Oceans
Publisher: [Prince Rupert, B.C.] : Fisheries and Oceans Canada
ISBN:
Category : Fish stock assessment
Languages : en
Pages : 132
Get Book Here
Book Description
Author: Canada. Department of Fisheries and Oceans
Publisher: [Prince Rupert, B.C.] : Fisheries and Oceans Canada
ISBN:
Category : Fish stock assessment
Languages : en
Pages : 132
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category : Fish populations
Languages : en
Pages : 104
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category : Animals
Languages : en
Pages : 1032
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 85
Get Book Here
Book Description
This report assesses the relative performance and utility of some basic procedures for forecasting adult returns to four salmon stocks in northern British Columbia. These include sockeye runs to Long Lake, Owikeno Lake, and the Skeena River, and even-year pink salmon returns to the Bella Coola system. These stocks were selected because adequate data were available, enabling comparison of the performance of a variety of simple biological and non-biological models. The report also documents preseason 1997 run size forecasts for nine sockeye and five pink salmon stocks or stock groupings in northern British Columbia. Algorithms for each forecasting model provided forecasts of stock size one year in advance and were evaluated by hindcasting stock size in previous years using only the data that would have been available at the time. This retrospective analysis provides a robust measure of how well the various forecasting algorithms would have worked had they actually been used.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 99
Get Book Here
Book Description
Assessments of all pink salmon stocks from northern and centralBritish Columbia are presented for the period 1970 to 1982. Eachstock is reconstructed by year using data on escapement (numberand timing) by stock, catch by area and information on migratoryroutes for each stock. Allocation of catch into component stocksis made proportionate to the escapement of each stock. Outputsof the analyses are total catch, catch by fishery, run size,harvest rate and run timing by stock by year. The quality of theoutput data and the degree of certainty in the results arediscussed.
Author: Julie Bednarski
Publisher:
ISBN:
Category : Escapement (Fisheries)
Languages : en
Pages : 18
Get Book Here
Book Description
The 2021 forecast of Stikine River sockeye salmon, Oncorhynchus nerka, run abundance is poor and we anticipate very little harvesting opportunity for either U.S. or Canadian fisheries. Since 1994, we have almost exclusively relied on the Canadian lower river commercial fishery to provide the migratory timing information that is used to complete the mixed stock run reconstruction for Stikine River sockeye salmon. It is highly likely there will be no fishing opportunity in 2021 to gather this pertinent information. To obtain stock composition data necessary to estimate the inriver abundance, we are initiating a sockeye salmon stock assessment program at Kakwan Point. The project will be conducted in conjunction with the existing Stikine River Chinook salmon, O. tshwaytscha, assessment program, and will extend the project through the end of the sockeye salmon run in late August. Tissue samples will be collected from sockeye salmon for genetic mixed stock analysis and for use in a genetic mark–recapture study to estimate inriver abundance based on an expansion of the Tahltan stock that is monitored via weir. We will also gather daily catch per unit effort (CPUE) information and estimate the age, sex and length (ASL) composition for sockeye salmon captured. This stock assessment program is designed to capture sockeye salmon in proportion to abundance during immigration; therefore, it is expected that it will provide an unbiased estimate of abundance. This estimate will be assessed by TTC postseason for use in the Stikine River sockeye salmon run reconstruction.
Author: D. T. Rutherford
Publisher:
ISBN:
Category : Salmon stock management
Languages : en
Pages : 57
Get Book Here
Book Description
Author: Jim H. Gable
Publisher:
ISBN:
Category : Fish stock assessment
Languages : en
Pages : 106
Get Book Here
Book Description
In the past, the Pacific Salmon Commission has used run reconstruction models to assign stock of origin to sockeye salmon (Oncorhynchus nerka) catches in the Fraser River First Nations fishery. Sockeye salmon catches from this fishery have also been allocated to stock groups using linear discriminant function analysis of scale parameters. This latter method has been applied to fishery catches from which scale proportions and catches derived using the two techniques.
Author: Jeff A. Wadle
Publisher:
ISBN:
Category : Fishery resources
Languages : en
Pages : 41
Get Book Here
Book Description
Author: Kristin Courtney
Publisher:
ISBN:
Category : Fish stock assessment
Languages : en
Pages : 0
Get Book Here
Book Description
The 2022 forecast of Stikine River sockeye salmon, Oncorhynchus nerka, run abundance is poor and we anticipate very little harvest opportunity for either U.S. or Canadian fisheries. Since 1994, we have almost exclusively relied on the Canadian lower river commercial fishery to provide the stock-specific information that is used to complete the mixed stock run reconstruction for Stikine River sockeye salmon. It is highly likely there will be little commercial fishing opportunity in 2022 to gather this pertinent information. To obtain stock composition data necessary to estimate the inriver abundance, we will continue to conduct a sockeye salmon stock assessment program at Kakwan Point that began in 2021. The project will be conducted in conjunction with the existing Stikine River Chinook salmon, O. tshwaytscha, stock assessment program, and will extend the project through the end of the sockeye salmon run in mid-August. Tissue samples will be collected from sockeye salmon for genetic mixed stock analysis and for use in a genetic mark–recapture study to estimate inriver abundance based on an expansion of the Tahltan stock that is monitored via weir. We will also gather daily CPUE information, capture and spaghetti tag sockeye salmon, and estimate the age, sex, and length composition for sockeye salmon captured at Kakwan Point.
