Chignik River Sockeye Salmon Escapement Sampling Operational Plan, 2020-2022 PDF Download

Author: Michelle Stratton
Publisher:
ISBN:
Category : Escapement (Fisheries)
Languages : en
Pages : 14

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Book Description
In the Chignik Management Area (Area L), the Chignik weir is the primary mode of enumeration for sockeye salmon Oncorhynchus nerka into the Chignik River. Annually, the Alaska Department of Fish and Game (ADF&G) samples salmon escapement at the Chignik weir for age, sex, and length (ASL) data. The biological information collected from salmon escapements provide the foundation for preseason run forecasts, escapement goal evaluation, and run reconstruction. Every week throughout the season, 240 sockeye salmon are sampled. Sockeye salmon scales are collected using established protocols common to the Westward Region.

Author: Matthew Olson
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 33

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Book Description
This operational plan describes the procedures for the sockeye salmon Oncorhynchus nerka smolt sampling project conducted by the Alaska Department of Fish and Game (ADF&G) in the Chignik River system. The project goal is to evaluate and document size and abundance trends of sockeye salmon smolt in the Chignik River system to understand rearing capacity and habitat use. The research is designed to assess age structure, fish body condition, and provide additional context for the adult sockeye salmon forecast. Age structure of the population will be estimated from scales of sockeye salmon smolt collected using a beach seine. Juvenile salmon habitat use will be examined by beach seining in near-shore marine environment. Findings from this project are vital for understanding effects of the commercial fishery and environmental changes occurring in the Chignik River system on the sockeye salmon population.

Author: Michelle L. Wattum
Publisher:
ISBN:
Category : Escapement (Fisheries)
Languages : en
Pages : 34

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Book Description
The purpose of this project is to provide biological data (age determination, length, and sex) from commercial salmon catch (harvest) and escapements to assist with the inseason and long-term management of salmon in the Kodiak Management Area (KMA). The Alaska Department of Fish and Game (ADF&G) Division of Commercial Fisheries annually samples sockeye salmon Oncorhynchus nerka escapements and catch in the KMA. Biological information such as age, sex, and length are collected from escapements in the Karluk, Ayakulik, Upper Station, Frazer, Afognak (Litnik), Saltery, and Pasagshak systems. In 1985, an expanded commercial salmon catch sampling operation was initiated in the KMA that, in combination with the escapement sampling, provides the foundation for preseason run forecasts, escapement goal evaluation, and assignment of the run to stock of origin (run reconstruction). Commercial sockeye salmon catch will be sampled for age from individual districts and sections throughout the KMA.

Author: Nicole L. Zeiser
Publisher:
ISBN:
Category : Escapement (Fisheries)
Languages : en
Pages : 38

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Book Description
The Chilkat 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, (2) provide information for inseason fishery management, and (3) reconstruct runs and assess stock status. The Chilkat Lake sockeye salmon run is managed for a biological escapement goal of 70,000–150,000 fish, which is enumerated with a Dual-Frequency Identification Sonar (DIDSON) system operated in conjunction with a standard picket weir located just downstream of the lake outlet. Genetic mixed stock analysis of weekly sockeye salmon harvests in the District 15 commercial drift gillnet fishery provides stock composition estimates that guide inseason management of the fishery (detailed in a separate Chilkoot Lake sockeye salmon operational plan). Biological sampling, along with escapement enumeration and stock-specific harvest data, allows for total run reconstruction required for escapement goal review. This project also supports the collection of basic limnology information at Chilkat Lake.

Author: Kelly M. Krueger
Publisher:
ISBN:
Category : Escapement (Fisheries)
Languages : en
Pages : 21

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Book Description
The goal of this project is to census the sockeye salmon escapement into Buskin Lake during 2022. The age, sex, and length composition of the run (escapement and subsistence harvest combined) to Buskin Lake will also be estimated.

Author: Nicole L. Zeiser
Publisher:
ISBN:
Category : Escapement (Fisheries)
Languages : en
Pages : 48

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Book Description
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.

Author: Edward O. Otis
Publisher:
ISBN:
Category : Escapement (Fisheries)
Languages : en
Pages : 116

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Book Description
The overall purpose of this project is to provide information on the run-timing and magnitude of sockeye salmon Oncorhynchus nerka escapements to Mikfik and Chenik lakes in the Kamishak District of the Lower Cook Inlet Management Area (LCIMA). Results will be used by Alaska Department of Fish and Game (ADF&G) fisheries managers to facilitate informed inseason management of commercial purse seine fisheries targeting these stocks to be consistent with sustained yield of wild stocks, follow appropriate principles and criteria in the Policy for the Management of Sustainable Salmon Fisheries, and achieve spawning escapement goals. This plan documents procedures we developed for estimating sockeye salmon escapement using an unmanned, or autonomous video counting tower (AVCT) that employs above-stream remote video cameras and digital time-lapse recording equipment. Hard drives are retrieved regularly, and video reviewed immediately so managers can use these data to adjust fishery openings in season to attain established escapement goals. The annual escapement indices derived by remote video are also used to refine the sustainable escapement goals for these stocks, currently established by ADF&G at 3,400-11,000 for Mikfik Lake and 2,900-13,700 for Chenik Lake.

Author: Jenny L. Gates
Publisher:
ISBN:
Category : Fish populations
Languages : en
Pages : 0

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Book Description
The Russian River sockeye salmon escapement assessment project, which began in 1962, is one of the oldest stock assessment projects in the state of Alaska. During 2023–2026, the Russian River weir will be operated annually from early June through the first 7 to 10 days of September. All species of fish seen passing the weir through the fish chute will be enumerated daily. Sampling of sockeye salmon for age, sex, and length data will be done each Friday, and the sample size each week will be based on the previous week’s fish passage. Sockeye and Chinook salmon spawning downstream of the Russian River weir to the confluence of the Russian River and the Kenai River will be assessed by a foot survey during the fourth week of August. Multiple foot surveys will also be conducted from mid-May to 10 June to assess spawning rainbow trout.

Author: Nicole L. Zeiser
Publisher:
ISBN:
Category : Escapement (Fisheries)
Languages : en
Pages : 38

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Book Description
This operational plan outlines objectives, methods, and timelines for operation of two fish wheels in the lower Chilkat River. The fish wheels provide indices of inriver abundance of sockeye (Oncorhynchus nerka) and chum (O. keta) salmon populations, which are used inseason to manage the District 15 commercial drift gillnet fishery in Lynn Canal. In addition, the fish wheels provide sampling platforms essential for stock assessment of both Chinook (O. tshawytscha), and coho (O. kisutch) salmon (covered in detail in separate operational plans.)

Author: Nicole L. Zeiser
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 27

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Book Description
The Alaska Department of Fish and Game, Division of Commercial Fisheries, monitors annual escapements of salmon returning to the Situk River system near Yakutat, Alaska. A weir provides the primary mode of enumeration for sockeye and Chinook salmon escapements into the Situk River. These weir counts are used for inseason management of commercial fisheries that target sockeye Oncorhynchus nerka and Chinook O. tshawytscha salmon returning to the drainage. The weir crew will enumerate all species of salmon through the Situk River weir and sample adult sockeye salmon and Chinook salmon escapements for biological characteristics (age, sex, and length). This report provides operational guidelines for the Situk River adult salmon weir project including salmon enumeration, sampling procedures, weir protocol, and general camp policies.