Estimation of Abundance and Distribution of Chum Salmon in the Unalakleet River Drainage, 2004 PDF Download
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Author: Jeffrey L. Estensen
Publisher:
ISBN:
Category : Chum salmon
Languages : en
Pages : 21
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Book Description
Author: Jeffrey L. Estensen
Publisher:
ISBN:
Category : Chum salmon
Languages : en
Pages : 21
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Book Description
Author: Jeffrey L. Estensen
Publisher:
ISBN:
Category : Chum salmon
Languages : en
Pages : 30
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Book Description
This document reports on the second of a 3-year project using radiotelemetry mark and recapture methods to determine the proportion of chum salmon, Oncorhynchus keta, migrating into North River and above a proposed weir site on Unalakleet River, and to estimate total Unalakleet drainage abundance.
Author: Gary L. Todd
Publisher:
ISBN:
Category : Biotelemetry
Languages : en
Pages : 38
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Book Description
Author: Philip John Joy
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 42
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Book Description
Author: Philip John Joy
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 38
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Book Description
Author: Gary L. Todd
Publisher:
ISBN:
Category : Chum salmon
Languages : en
Pages : 28
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Book Description
"Chum salmon were seined in the lower Fish River for biological sampling and 100 radio tags were deployed. Mark-recapture methodology, using Niukluk River counting tower as recapture location was used to estimate total chum salmon abundance in the Fish River"--P. vi.
Author: James Everett Andel
Publisher:
ISBN:
Category : Chum salmon
Languages : en
Pages : 18
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Book Description
Author: Jody D. Lozori
Publisher:
ISBN:
Category : Chum salmon
Languages : en
Pages : 0
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Book Description
The Alaska Department of Fish and Game (ADF&G), actively manages chum salmon fisheries in the Yukon River drainage. The purpose of the Anvik River sonar project is to monitor escapement of summer chum salmon Oncorhynchus keta and pink salmon O. gorbuscha in the Anvik River drainage, believed to be the largest producer of summer chum salmon in the Yukon River drainage (Hayes et al. 2008, Larson et al. 2017). Timely and accurate reporting of information from the Anvik River sonar project helps Yukon River fishery managers ensure the Anvik River Biological Escapement Goal (BEG) of 350,000 to 700,000 summer chum salmon is met (ADF&G 2004). This assessment is necessary to determine if summer chum salmon abundance will meet downstream harvest and upstream escapement needs. Fishery openings and closures may be based in part upon this assessment. This project uses imaging sonar equipment on the Anvik River to generate timely, in-season passage estimates of salmon (Brodersen 2021). Beach seine sampling is conducted to collect biological data used in characterizing the summer chum salmon run and tower estimates are used to apportion passage estimates to species. The project site is located approximately 76 km upstream from the mouth of the Anvik River (Figures 1 and 2) and is scheduled to operate continuously from approximately June 16 through July 26, 2023.
Author: Sean Larson
Publisher:
ISBN:
Category : Chum salmon
Languages : en
Pages : 16
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Book Description
Summer chum salmon (Oncorhynchus keta) in the Yukon River support robust commercial and subsistence fisheries; however, fishery managers have had incomplete information about their run timing, spawning distribution, stock composition, and abundance. To address this, a radiotelemetry study was implemented on summer chum salmon in 2014 and 2015. A total of 1,232 (2014) and 1,199 (2015) summer chum salmon were fitted with radio transmitters. Radiotagged summer chum salmon were mapped, travel rates were estimated, and proportions of tagged fish recovered within different tributaries were determined. Basic mark-recapture assumptions were tested and abundance above the tagging site was estimated. Summer chum salmon were found to be widely distributed within the Yukon River drainage. Although a few tagged fish were observed in most locations, roughly 50% of tagged fish were observed in the Anvik, Koyukuk, and Bonasila rivers each year. Summer chum salmon destined for upper river spawning areas traveled faster than those to lower river areas. Summer chum salmon tended to recover quickly after being tagged, and traveled relatively fast within the mainstem Yukon River, but slowed down after entering their spawning tributaries. The 2014 mark-recapture abundance estimate was about 2,100,000 fish, which corresponded with summer chum salmon passage at the mainstem Yukon River sonar near Pilot Station. The 2015 mark-recapture abundance estimate was also about 2,100,000 fish, which was larger than the summer chum salmon passage at the sonar near Pilot Station. Results from this study help to evaluate sonar passage estimates and provide fishery managers with more detailed information about distribution and migratory patterns of individual summer chum salmon stocks within the Yukon River drainagewide population.
Author: Roger D. Dunbar
Publisher:
ISBN:
Category : Chum salmon
Languages : en
Pages : 68
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Book Description
This reports on the Hydroacoustic Technology Incorporated (HTI) fixed-location, split-beam sonar, which was used to estimate chum salmon, Oncorhynchus keta, escapement in the Sheenjek River from August 8 to September 25, 2004.
