Operational Plan: Estimation of Smolt Production and Harvest of Stikine River Chinook Salmon, 2019-2021

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Total Pages : 0 pages
Book Rating : 4.:/5 (133 download)

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Book Synopsis Operational Plan: Estimation of Smolt Production and Harvest of Stikine River Chinook Salmon, 2019-2021 by : Kristin Courtney

Download or read book Operational Plan: Estimation of Smolt Production and Harvest of Stikine River Chinook Salmon, 2019-2021 written by Kristin Courtney and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The primary goals of this study are to estimate the number of Chinook salmon Oncorhynchus tshawytscha smolt leaving the Stikine River and the length and weight of these Chinook salmon smolt yearly from 2019-2021. In addition, the harvest and marine survival of adult Chinook salmon returning to the Stikine River in the corresponding 2017-2019 brood years will be estimated, as well as length and weight of coho salmon smolt yearly from 2019-2021. A modified Petersen 2-event mark-recapture project will be used to estimate smolt abundance, and a coded wire tag project in conjunction with harvest sampling programs will be used to estimate harvest. Chinook smolt will be marked with adipose fin clips and coded wire tags each spring. Marked fish will be recaptured through creel, port, and escapement sampling programs. The Alaska Department of Fish and Game and Fisheries and Oceans Canada use these data, along with adult escapement information, to make terminal and regional management decisions, and the Pacific Salmon Commission uses the data for coastwide management and stock assessment through the Transboundary and Chinook Technical Committees.

Estimation of Smolt Production and Harvest of Stikine River Chinook Salmon, 2022-2024

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Total Pages : 27 pages
Book Rating : 4.:/5 (132 download)

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Book Synopsis Estimation of Smolt Production and Harvest of Stikine River Chinook Salmon, 2022-2024 by : Kristin Courtney

Download or read book Estimation of Smolt Production and Harvest of Stikine River Chinook Salmon, 2022-2024 written by Kristin Courtney and published by . This book was released on 2022 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: The primary goals of this study are to estimate a) the number of Chinook salmon Oncorhynchus tshawytscha smolt (=50 mm FL) leaving the Stikine River yearly from 2022 to 2024, and b) the mean length and weight of Chinook salmon smolt leaving the Stikine River annually. Additional objectives include estimating the marine harvest and marine survival of adult Chinook salmon returning to the Stikine River from the 2020–2022 brood years and estimating the length and weight of coho salmon Oncorhynchus kisutch smolt that are captured during their outmigration. A modified Petersen 2-event mark–recapture project will be conducted to estimate smolt abundance, and a coded wire tag (CWT) project relying on harvest sampling programs will be conducted to estimate harvest. Length and weight data will be collected during the CWT and event 1 smolt tagging project. Chinook salmon smolt will be marked with adipose fin clips and CWTs each spring. Marked fish will be recaptured through creel, port, and escapement sampling procedures. The Stikine River is 1 of 12 statewide Chinook salmon indicator stocks monitored by the Alaska Department of Fish and Game (ADF&G) and is both an escapement and exploitation indicator stock for the Pacific Salmon Commission (Chinook Research Team 2013, CTC 2021). ADF&G and Fisheries and Oceans Canada (DFO) use these data, along with adult escapement information (described in a separate operational plan), to make terminal and regional management decisions, and the PSC uses these data for coastwide management and stock assessment through the Transboundary and Chinook Technical Committees.

Estimation of Smolt Production and Harvest of Stikine River Chinook Salmon, 2013

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ISBN 13 :
Total Pages : 25 pages
Book Rating : 4.:/5 (852 download)

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Book Synopsis Estimation of Smolt Production and Harvest of Stikine River Chinook Salmon, 2013 by : Philip Richards

Download or read book Estimation of Smolt Production and Harvest of Stikine River Chinook Salmon, 2013 written by Philip Richards and published by . This book was released on 2013 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: The primary goals of this study are to estimate the number of Chinook salmon smolt leaving the Stikine River in 2013, and the harvest of adult Chinook salmon returning to the Stikine River from the 2011 brood year.

Operational Plan: Production and Harvest of Unuk River Chinook Salmon, 2020-2022

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ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (134 download)

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Book Synopsis Operational Plan: Production and Harvest of Unuk River Chinook Salmon, 2020-2022 by : Nathan Frost

Download or read book Operational Plan: Production and Harvest of Unuk River Chinook Salmon, 2020-2022 written by Nathan Frost and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This plan describes the coded-wire tagging of juvenile Chinook salmon Oncorhynchus tshawytscha on the Unuk River for the 2019 and 2020 brood years, which covers the coded-wire tagging of parr in fall of 2020 and 2021 and smolt in spring of 2021 and 2022, and sampling returning adults for age, sex, length, and coded-wire tags in escapement from the 2022 through 2027 return years. This study provides estimates of smolt and parr abundance, overwinter (freshwater) survival, mean lengths of juveniles, and harvest information of Chinook salmon originating from the Unuk River in Southeast Alaska. A separate project will be conducted on the Unuk River that employs aerial and foot survey peak counts to estimate large (≥660 mm mid eye to fork of tail length) adult Chinook salmon returning to the river in 2020 and 2021. The primary goals of this and the companion study are to estimate inriver run size, total run size, marine harvest-exploitation rate and harvest distribution, smolt and parr abundance, marine survival (smolt to adult) and overwinter survival (parr to smolt). The Alaska Department of Fish and Game uses this information to make local and regional management decisions, and the Pacific Salmon Commission uses the data for coastwide management and stock assessment through the Chinook Technical Committee.

Operational Plan: Production and Harvest of Chilkat River Chinook and Coho Salmon, 2020-2021

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ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (135 download)

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Book Synopsis Operational Plan: Production and Harvest of Chilkat River Chinook and Coho Salmon, 2020-2021 by : Brian W. Elliott

Download or read book Operational Plan: Production and Harvest of Chilkat River Chinook and Coho Salmon, 2020-2021 written by Brian W. Elliott and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: An ongoing coded-wire tag project, used as part of a stock assessment program for Chilkat River Chinook salmon Oncorhynchus tshawytscha and coho salmon Oncorhynchus kisutch, will be conducted during fall 2020 and spring 2021 to provide estimates of smolt abundance and marine harvest for Chinook and coho salmon. This project uses modified Peterson 2-event mark-recapture methods to estimate smolt abundance, and port and creel sampling of coded-wire tags in mixed stock commercial and sport fisheries to estimate marine harvest for both species. Juvenile salmon will be measured for length and weight, marked with adipose fin clips, and tagged with coded wire tags in fall 2020 (juvenile Chinook salmon) and spring 2021 (Chinook and coho salmon smolt) as event 1 of the mark-recapture study. During event 2, adult Chinook salmon will be sampled for missing adipose fins, coded wire tags, age, sex, and length in Chilkat River fishwheels and drift gillnets, which are operated in the lower Chilkat River as part of a separate adult mark-recapture project. Adult Chinook salmon will be also sampled for missing adipose fins, coded wire tags, and age, sex, and length during Chilkat River drainage spawning grounds surveys to complete event 2 sampling. Coho salmon will also be sampled as adults during event 2 in the lower Chilkat River fishwheels. Age composition of Chinook salmon adults will be estimated by scale ageing techniques; age composition of coho salmon smolt and adults will also be estimated. The Alaska Department of Fish and Game uses these data to make local and regional management decisions. Chilkat Chinook salmon is a Pacific Salmon Commission exploitation rate and escapement indicator stock and has recently been added to the base model of abundance indicator stocks for the Chinook Technical Committee, which influences coastwide management.

Operational Plan: Production and Harvest of Chilkat River Chinook and Coho Salmon, 2021-2022

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ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (134 download)

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Book Synopsis Operational Plan: Production and Harvest of Chilkat River Chinook and Coho Salmon, 2021-2022 by : Brian W. Elliott

Download or read book Operational Plan: Production and Harvest of Chilkat River Chinook and Coho Salmon, 2021-2022 written by Brian W. Elliott and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: An ongoing coded-wire tag project, used as part of a stock assessment program for Chilkat River Chinook salmon Oncorhynchus tshawytscha and coho salmon Oncorhynchus kisutch, will be conducted during fall 2020 and spring 2021 to provide estimates of smolt abundance and marine harvest for Chinook and coho salmon. This project uses modified Peterson 2-event mark-recapture methods to estimate smolt abundance, and port and creel sampling of coded-wire tags in mixed stock commercial and sport fisheries to estimate marine harvest for both species. Juvenile salmon will be measured for length and weight, marked with adipose fin clips, and tagged with coded wire tags in fall 2020 (juvenile Chinook salmon) and spring 2021 (Chinook and coho salmon smolt) as event 1 of the mark-recapture study. During event 2, adult Chinook salmon will be sampled for missing adipose fins, coded wire tags, age, sex, and length in Chilkat River fishwheels and drift gillnets, which are operated in the lower Chilkat River as part of a separate adult mark-recapture project. Adult Chinook salmon will be also sampled for missing adipose fins, coded wire tags, and age, sex, and length during Chilkat River drainage spawning grounds surveys to complete event 2 sampling. Coho salmon will also be sampled as adults during event 2 in the lower Chilkat River fishwheels. Age composition of Chinook salmon adults will be estimated by scale ageing techniques; age composition of coho salmon smolt and adults will also be estimated. The Alaska Department of Fish and Game uses these data to make local and regional management decisions. Chilkat Chinook salmon is a Pacific Salmon Commission exploitation rate and escapement indicator stock and has recently been added to the base model of abundance indicator stocks for the Chinook Technical Committee, which influences coastwide management.

Operational Plan: Production and Harvest of Unuk River Chinook Salmon, 2018-2020

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ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (135 download)

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Book Synopsis Operational Plan: Production and Harvest of Unuk River Chinook Salmon, 2018-2020 by : Nathan Frost

Download or read book Operational Plan: Production and Harvest of Unuk River Chinook Salmon, 2018-2020 written by Nathan Frost and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This plan describes the coded-wire tagging of juvenile Chinook salmon Oncorhynchus tshawytscha on the Unuk River for the 2017 and 2018 brood years, which covers the coded-wire tagging of parr in fall of 2018 and 2019 and smolt in spring of 2019 and 2020, and sampling returning adults for age, sex, length, and coded-wire tags in escapement from the 2020 through 2025 return years. This study provides estimates of smolt and parr abundance, overwinter (freshwater) survival, mean lengths of juveniles, and harvest information of Chinook salmon originating from the Unuk River in Southeast Alaska. A separate project will be conducted on the Unuk River that employs aerial and foot survey peak counts to estimate large (>660 mm mid eye to fork of tail length) adult Chinook salmon returning to the river in 2018 and 2019. The primary goals of this and the companion study are to estimate inriver run size, total run size, marine harvest-exploitation rate and harvest distribution, smolt and parr abundance, marine survival (smolt to adult) and overwinter survival (parr to smolt). The Alaska Department of Fish and Game uses this information to make local and regional management decisions, and the Pacific Salmon Commission uses the data for coastwide management and stock assessment through the Chinook Technical Committee.

Juvenile Abundance and Harvest of Unuk River Chinook Salmon, 2022-2024

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ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (137 download)

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Book Synopsis Juvenile Abundance and Harvest of Unuk River Chinook Salmon, 2022-2024 by : Nathan Frost

Download or read book Juvenile Abundance and Harvest of Unuk River Chinook Salmon, 2022-2024 written by Nathan Frost and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This plan describes the coded-wire-tagging of juvenile Chinook salmon Oncorhynchus tshawytscha on the Unuk River for the 2021 and 2022 brood years, which covers the coded-wire-tagging of parr in fall of 2022 and 2023 and smolt in spring of 2023 and 2024, and sampling returning adults for age, sex, length, and coded wire tags in escapement from the 2024 through 2029 return years. This study provides estimates of smolt and parr abundance, overwinter (freshwater) survival, mean lengths of juveniles, and harvest information of Chinook salmon originating from the Unuk River in Southeast Alaska. A separate project will be conducted on the Unuk River that employs aerial and foot survey peak counts to estimate large (≥ 660 mm mid eye to fork of tail length) adult Chinook salmon returning to the river in 2022 and 2023. The primary goals of this and the companion study are to estimate inriver run size, total run size, marine harvest and exploitation rates, harvest distribution, smolt and parr abundance, marine survival (smolt to adult) and overwinter survival (parr to smolt). The Alaska Department of Fish and Game uses this information to make local and regional management decisions and to evaluate the Unuk River Chinook salmon escapement goal, and the Pacific Salmon Commission uses the data for coastwide management and stock assessment through the Chinook Technical Committee.

Operational Plan: Spawning Escapement of Chinook Salmon in the Stikine River, 2019-2021

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ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (133 download)

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Book Synopsis Operational Plan: Spawning Escapement of Chinook Salmon in the Stikine River, 2019-2021 by : Kristin Courtney

Download or read book Operational Plan: Spawning Escapement of Chinook Salmon in the Stikine River, 2019-2021 written by Kristin Courtney and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The spawning escapement of large (≥660 mm MEF) Chinook salmon Oncorhynchus tshawytscha above the U.S.-Canada border will be estimated yearly from 2019-2021 in the Stikine River, near Wrangell, Alaska. A modified Petersen 2-event mark-recapture project will be conducted using drift gillnets to mark Chinook salmon in the first event, and collection of samples in the Canadian commercial fishery, Little Tahltan River video weir, and on the spawning grounds will serve as the second event. Age, sex and length of both the inriver run and spawning escapement of Chinook salmon will also be estimated. The Alaska Department of Fish and Game and Fisheries and Oceans Canada use these data to make terminal and regional management decisions, and the Pacific Salmon Commission uses the data for coastwide management and stock assessment through the Chinook Technical Committee.

Operational Plan: Chilkat River Chinook Salmon Escapement Studies in 2021

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ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (134 download)

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Book Synopsis Operational Plan: Chilkat River Chinook Salmon Escapement Studies in 2021 by : Brian W. Elliott

Download or read book Operational Plan: Chilkat River Chinook Salmon Escapement Studies in 2021 written by Brian W. Elliott and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chilkat River large (age-1.3 and older) Chinook salmon Oncorhynchus tshawytscha inriver abundance and age and sex composition will be estimated using a 2-event mark-recapture experiment in 2019. Event 1 capture and marking will be conducted in the lower Chilkat River, and event 2 recapture will be conducted in principal spawning areas within the Chilkat River drainage. Data produced from this project will include spawning abundance of large Chinook salmon, age and sex compositions of the run, and when possible, age-1.2 abundance and length composition in the Chilkat River drainage. Chilkat River Chinook salmon are an exploitation rate and escapement indicator stock for the Pacific Salmon Commission Chinook Technical Committee, and it has been proposed that this stock be included in the coastwide Chinook salmon model used by the Pacific Salmon Commission to monitor coastwide abundance. Mark-recapture experiments have been conducted in the Chilkat River drainage since 1991; escapement estimates for 1991-2018 have an average coefficient of variation of 14%, which contributes toward precise stock assessment production estimates for the Chilkat River Chinook salmon stock. As part of the ongoing Chilkat River Chinook salmon coded wire tag studies, all Chinook salmon encountered in the mark-recapture experiment will be examined for adipose fin clips and the presence of a coded wire tag, which can be used for estimating juvenile production and marine harvest. Data collected from this project will be used to create full production estimates for the Chilkat stock.

Operational Plan: Upper Cook Inlet Commercial Eastside Set Gillnet Chinook Salmon Harvest Composition Study 2021-2023

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ISBN 13 :
Total Pages : 43 pages
Book Rating : 4.:/5 (129 download)

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Book Synopsis Operational Plan: Upper Cook Inlet Commercial Eastside Set Gillnet Chinook Salmon Harvest Composition Study 2021-2023 by : Anthony Alexander Eskelin

Download or read book Operational Plan: Upper Cook Inlet Commercial Eastside Set Gillnet Chinook Salmon Harvest Composition Study 2021-2023 written by Anthony Alexander Eskelin and published by . This book was released on 2022 with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt: Age, sex, and length composition information will be collected from harvested Chinook salmon in the Upper Cook Inlet Eastside set gillnet (ESSN) commercial fishery in 2021–2023. Genetic tissues from the harvest will also be collected and archived for potential future mixed stock analysis. The primary goal of the study is to estimate the age, sex, and length composition of the Chinook salmon harvest and to estimate the harvest of large (>75 cm METF) Kenai River Chinook salmon in the ESSN fishery for each season (2021–2023). Age, sex, and length composition will be estimated for each temporal and geographic stratum and for each season. The harvest of large Kenai River Chinook salmon will be estimated using historical (2010–2020) large fish stock compositions relative to the total large fish harvest for each temporal and geographic stratum and summed to the total for each season.

Operational Plan: Susitna River Chinook Salmon Inriver Abundance, 2021

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ISBN 13 :
Total Pages : 47 pages
Book Rating : 4.:/5 (13 download)

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Book Synopsis Operational Plan: Susitna River Chinook Salmon Inriver Abundance, 2021 by : Johnathon K. Campbell

Download or read book Operational Plan: Susitna River Chinook Salmon Inriver Abundance, 2021 written by Johnathon K. Campbell and published by . This book was released on 2022 with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal of this study is to estimate the abundance of Chinook salmon at river mile (RM) 34 of the mainstem Susitna River and spawning distribution among 5 management areas in 2021. A 2-event, mark-recapture experiment in combination with radiotelemetry will be used. Fish wheels and gillnets will be operated at river mile (RM) 34 to capture Chinook salmon for marking with passive integrated transponder (PIT) and radiotelemetry tags. Recapture event sampling will occur at the Deshka River weir at RM 7 where a PIT detection array will be used. Eight radiotracking stations will be strategically placed throughout the drainage to determine when radiotagged fish move in and out of the 5 management zones, allowing a determination of spawning distribution. A concurrent genetics mark-recapture study will be performed using genetics samples taken from a systematic sample of all PIT-tagged fish. The applied radio tags will also be used to estimate handling effects. In the event of a sport fishery, the proportions of non-Deshka River Chinook salmon in the sport harvest taken in 2 sections of the Deshka River will also be estimated through sampling of axillary processes from harvested fish and genetic stock identification.

Operational Plan: Situk River Chinook Salmon Creel Survey, 2021-2022

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ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (133 download)

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Book Synopsis Operational Plan: Situk River Chinook Salmon Creel Survey, 2021-2022 by : Jason A. Pawluk

Download or read book Operational Plan: Situk River Chinook Salmon Creel Survey, 2021-2022 written by Jason A. Pawluk and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this project is to determine Chinook salmon Oncorhynchus tshawytscha harvest by sport anglers on the Situk River and the age components of that harvest. Additionally, sockeye salmon Oncorhynchus nerka harvest will be determined and various methods of angler use patterns for both species will be recorded. Creel sampling techniques will be used to collect catch, harvest, effort and biological information from the Situk River for this purpose. This information is used to manage for the Chinook salmon biological escapement goal for the Situk River as per the Situk-Ahrnklin and Lost River Chinook salmon Management Plan, along with achieving the Situk River sockeye salmon biological escapement goal. Inriver abundance for both Situk River Chinook and sockeye is obtained from another project with a fish weir, and escapement is calculated by subtracting the above-weir sport harvest estimate of this project from that weir count. Additionally, the Chinook salmon age component information of the harvest gathered here is required for yearly stock assessment models to predict the following years run and set preseason management regulations.

Juvenile Abundance and Harvest of Chilkat River Chinook and Coho Salmon, 2022-2023

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ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (137 download)

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Book Synopsis Juvenile Abundance and Harvest of Chilkat River Chinook and Coho Salmon, 2022-2023 by : Brian W. Elliott

Download or read book Juvenile Abundance and Harvest of Chilkat River Chinook and Coho Salmon, 2022-2023 written by Brian W. Elliott and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: An ongoing coded wire tag project, used as part of a stock assessment program for Chilkat River Chinook salmon Oncorhynchus tshawytscha and coho salmon O. kisutch, will be conducted during fall 2022 and spring 2023 to provide estimates of smolt abundance and marine harvest for Chinook and coho salmon. This project uses modified Peterson 2-event mark–recapture methods to estimate smolt abundance, and port sampling of coded wire tags in mixed stock commercial and sport fisheries to estimate marine harvest for both species. Juvenile salmon will be measured for length and weight, marked with adipose fin clips, and tagged with coded wire tags in fall 2022 (juvenile Chinook salmon) and spring 2023 (Chinook and coho salmon smolt) as event 1 of the mark–recapture study. During event 2, adult Chinook salmon will be sampled for missing adipose fins, coded wire tags, age, sex, and length in Chilkat River fishwheels and drift gillnets, which are operated in the lower Chilkat River as part of a separate adult mark–recapture project. Adult Chinook salmon will be also sampled for missing adipose fins, coded wire tags, and age, sex, and length during Chilkat River drainage spawning grounds surveys to complete event 2 sampling. Coho salmon will also be sampled as adults during event 2 in the lower Chilkat River fishwheels. Age composition of Chinook salmon adults will be estimated by scale ageing techniques; age composition of coho salmon smolt and adults will also be estimated. The Alaska Department of Fish and Game uses these data to make local and regional management decisions. Chilkat River Chinook salmon is a Pacific Salmon Commission exploitation rate and escapement indicator stock and has recently been added to the base model of abundance indicator stocks for the Chinook Technical Committee, which influences coastwide management.

Production and Harvest of Chilkat River Chinook and Coho Salmon, 2019-2020

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ISBN 13 :
Total Pages : 80 pages
Book Rating : 4.:/5 (12 download)

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Book Synopsis Production and Harvest of Chilkat River Chinook and Coho Salmon, 2019-2020 by : Brian W. Elliott

Download or read book Production and Harvest of Chilkat River Chinook and Coho Salmon, 2019-2020 written by Brian W. Elliott and published by . This book was released on 2020 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: An ongoing coded-wire tag project, used as part of a stock assessment program for Chilkat River Chinook salmon Oncorhynchus tshawytscha and coho salmon Oncorhynchus kisutch, will be conducted during fall 2019 and spring 2020 to provide estimates of smolt abundance and marine harvest for Chinook and coho salmon. This project uses modified Peterson 2-event mark-recapture methods to estimate smolt abundance, and port and creel sampling of coded-wire tags in mixed stock commercial and sport fisheries to estimate marine harvest for both species. Juvenile salmon will be measured for length and weight, marked with adipose fin clips, and tagged with coded wire tags in fall 2019 (juvenile Chinook salmon) and spring 2020 (Chinook and coho salmon smolt) as event 1 of the mark-recapture study. During event 2, adult Chinook salmon will be sampled for missing adipose fins, coded wire tags, age, sex, and length in Chilkat River fishwheels and drift gillnets, which are operated in the lower Chilkat River as part of a separate adult mark-recapture project. Adult Chinook salmon will be also sampled for missing adipose fins, coded wire tags, and age, sex, and length during Chilkat River drainage spawning grounds surveys to complete event 2 sampling. Coho salmon will also be sampled as adults during event 2 in the lower Chilkat River fishwheels. Age composition of Chinook salmon adults will be estimated by scale ageing techniques; age composition of coho salmon smolt and adults will also be estimated. The Alaska Department of Fish and Game uses these data to make local and regional management decisions. Chilkat Chinook salmon is a Pacific Salmon Commission exploitation rate and escapement indicator stock and has recently been added to the base model of abundance indicator stocks for the Chinook Technical Committee, which influences coastwide management

Spawning Escapement of Chinook Salmon in the Stikine River, 2022–2024

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ISBN 13 :
Total Pages : 45 pages
Book Rating : 4.:/5 (132 download)

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Book Synopsis Spawning Escapement of Chinook Salmon in the Stikine River, 2022–2024 by : Kristin Courtney

Download or read book Spawning Escapement of Chinook Salmon in the Stikine River, 2022–2024 written by Kristin Courtney and published by . This book was released on 2022 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt: The inriver abundance of large (fish =660 mm mid eye to tail fork [METF] length) Chinook salmon Oncorhynchus tshawytscha above the U.S./Canada border (border) will be estimated annually from 2022 to 2024 in the Stikine River, near Wrangell, Alaska. A modified Petersen 2-event mark–recapture project will be conducted using drift gillnets to mark large Chinook salmon in the first event, and collection of samples in the Canadian commercial fishery, Little Tahltan River video weir, and on the spawning grounds will serve as the second event. Additional project objectives are to a) estimate the annual spawning escapement of large Chinook salmon above the border, b) estimate the age, sex, and length composition of both the inriver run and spawning escapement, and c) estimate the proportion of large radiotagged Chinook salmon that cross the border. The Alaska Department of Fish and Game (ADF&G) and Fisheries and Oceans Canada (DFO) use these data to make terminal and regional management decisions, and the Pacific Salmon Commission (PSC) uses the data for coastwide management and stock assessment through the Chinook Technical Committee (CTC 2021).

Stikine River and Andrew Creek Chinook Salmon Stock Status and Action Plan, 2022

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ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (133 download)

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Book Synopsis Stikine River and Andrew Creek Chinook Salmon Stock Status and Action Plan, 2022 by : Paul G. Salomone

Download or read book Stikine River and Andrew Creek Chinook Salmon Stock Status and Action Plan, 2022 written by Paul G. Salomone and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In response to guidelines established in the Policy for the Management of Sustainable Salmon Fisheries (SSFP), the Alaska Department of Fish and Game (department) recommended that the Stikine River and Andrew Creek stocks of Chinook salmon (Oncorhynchus tshawytscha) be designated as stocks of “management concern.” A management concern is defined as “a concern arising from a chronic inability, despite use of specific management measures, to maintain escapements for a salmon stock within the bounds of the SEG [sustainable escapement goal], BEG [biological escapement goal], OEG [optimum escapement goal], or other specified management objectives for the fishery.” Escapements of Stikine River Chinook salmon have fallen below the lower bound of the existing BEG (14,000 to 28,000 fish) each of the last 5 years (2016 to 2020). Since 2016, the department has implemented conservative management measures that have been effective in reducing the harvest of Stikine River Chinook salmon. Andrew Creek is a tributary to the Stikine River located entirely within Alaska. Chinook salmon escapements to Andrew Creek have been below the BEG (650 to 1,500 fish) in 4 of the previous 5 years. It is assumed actions that have reduced the harvest of Stikine River Chinook salmon have also reduced harvest of Andrew Creek Chinook salmon.