Estimation of Abundance and Distribution of Chum Salmon (Oncorhynchus Keta) in the Unalakleet River Drainage, 2005 PDF Download
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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: 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: Jeffrey L. Estensen
Publisher:
ISBN:
Category : Chum salmon
Languages : en
Pages : 21
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Book Description
Author: P. A. Milligan
Publisher:
ISBN:
Category :
Languages : en
Pages : 131
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Book Description
Author: Richard G. Bakkala
Publisher:
ISBN:
Category : Chum salmon
Languages : en
Pages : 100
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Author: Roger D. Dunbar
Publisher:
ISBN:
Category : Chum salmon
Languages : en
Pages : 38
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Book Description
This reports on the Dual-Frequency Identification Sonar (DIDSON), which was used to estimate chum salmon, Oncorhynchus keta, escapement in the Sheenjek River from August 10 to September 24, 2005. This was the first season that DIDSON was used to estimate chum salmon passage in the Sheenjek River, and the first season that both banks were fully monitored since 1987.
Author: Peter Mallon Cleary
Publisher:
ISBN:
Category : Chum salmon
Languages : en
Pages : 52
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In 2009, the Alaska Department of Fish and Game began a 4-year spawning distribution and abundance estimation study in response to concerns over the status of the Susitna River chum (Oncorhynchus keta) and coho (O. kisutch) salmon stocks. This report summarizes results of mark-recapture abundance and distribution assessments completed during 2011. Four fish wheels were used to capture and tag chum and coho salmon with dart tags at river mile (RM) 22 in the Susitna River in July and August 2011. Two fish wheels were used at RM 7 in the Yentna River and 2 fish wheels were used at RM 34 in the mainstem Susitna River to sample salmon for tags. Estimated abundance of chum salmon was 1,473,969 (SE 123,933) fish for the mainstem Susitna River and 278,063 (SE 42,780) fish for the Yentna River. Estimated abundance of coho salmon was 131,878 (SE 24,146) fish for the mainstem Susitna River and 84,677 (SE 9,981) fish for the Yentna River. A total of 734 radio tags were placed in chum and coho salmon. Their movements were tracked using 6 ground tracking stations, 7 aerial surveys of the mainstem Susitna River, 6 aerial surveys of the Yentna River, and 3 drainagewide aerial surveys. All but 31 of the radio tags were relocated and 635 (86.5%) were assigned a putative spawning location. Both chum and coho salmon exhibited bank orientation at the tagging site.
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: Peter Mallon Cleary
Publisher:
ISBN:
Category : Chum salmon
Languages : en
Pages : 38
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Book Description
Reports the results of fall chum salmon, Oncorhynchus keta, fish wheel mark-recapture studies on the Tanana and Kantishna Rivers.
Author: Canada. Department of Fisheries and Oceans
Publisher:
ISBN:
Category : Chum salmon
Languages : en
Pages : 0
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Book Description
Author: Canada. Department of Fisheries and Oceans. Pacific Region. Field Services Branch
Publisher: New Westminster, B.C. : Fisheries and Oceans, Canada
ISBN:
Category : Chum salmon
Languages : en
Pages : 141
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Book Description
