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Author: Nicholas James Smith
Publisher:
ISBN:
Category : Animal radio tracking
Languages : en
Pages : 36
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Book Description
A 2-sample mark-recapture experiment was conducted to estimate the abundance and upriver migration characteristics of adult Chinook salmon Oncorhynchus tshawytscha returning to the Kuskokwim River in 2015. Tagging occurred downriver from all known spawning tributaries, except the Eek River. All fish were marked with a dorsally attached spaghetti tag, and a subset of spaghetti tagged fish was also fitted with a radio tag to evaluate assumptions of the abundance estimator and monitor upriver movement. Radiotagged fish were tracked throughout the study area using a network of telemetry stations and a series of aerial telemetry surveys. Seven escapement monitoring weirs were operated upriver from the tag site and served as recapture locations for tagged fish. Inriver abundance of Chinook salmon upstream of rkm 67 was 115,541 fish (95% CI: 105,370-125,346). Radiotagged Chinook salmon traveling to upriver tributaries were captured and tagged earlier in the run compared to tagged fish migrating to middle river tributaries. Chinook salmon returning to lower river tributaries were captured and tagged throughout the entire run.
Author: Nicholas James Smith
Publisher:
ISBN:
Category : Animal radio tracking
Languages : en
Pages : 36
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Book Description
A 2-sample mark-recapture experiment was conducted to estimate the abundance and upriver migration characteristics of adult Chinook salmon Oncorhynchus tshawytscha returning to the Kuskokwim River in 2015. Tagging occurred downriver from all known spawning tributaries, except the Eek River. All fish were marked with a dorsally attached spaghetti tag, and a subset of spaghetti tagged fish was also fitted with a radio tag to evaluate assumptions of the abundance estimator and monitor upriver movement. Radiotagged fish were tracked throughout the study area using a network of telemetry stations and a series of aerial telemetry surveys. Seven escapement monitoring weirs were operated upriver from the tag site and served as recapture locations for tagged fish. Inriver abundance of Chinook salmon upstream of rkm 67 was 115,541 fish (95% CI: 105,370-125,346). Radiotagged Chinook salmon traveling to upriver tributaries were captured and tagged earlier in the run compared to tagged fish migrating to middle river tributaries. Chinook salmon returning to lower river tributaries were captured and tagged throughout the entire run.
Author: Nicholas James Smith
Publisher:
ISBN:
Category : Animal radio tracking
Languages : en
Pages : 38
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Book Description
A 2-sample mark-recapture experiment was conducted to estimate the abundance and upriver migration characteristics of adult Chinook salmon Oncorhynchus tshawytscha returning to the Kuskokwim River in 2016. Tagging occurred downriver from all known spawning tributaries, except the Eek River. A total of 621 Chinook salmon were marked with radio and spaghetti tags, of which 527 continued upriver migration and were used to estimate abundance. Radiotagged fish were tracked throughout the study area using a network of telemetry stations and a series of aerial telemetry surveys. Upriver escapement monitoring weirs served as 7 recapture locations, representing lower, middle, and upper river tributaries. A total of 21,590 Chinook salmon were evaluated for tags, and total tag recoveries was estimated at 94. Inriver abundance of Chinook salmon upstream of rkm 67 was 120,000 fish (95% CI: 99,304-147,502). Radiotagged Chinook salmon traveling to upriver tributaries were captured and tagged earlier in the run compared to tagged fish migrating to middle river tributaries. Chinook salmon returning to lower river tributaries were captured and tagged throughout the entire run. Chinook salmon swam at a median speed of 36 rkm/day (range: 31-41 rkm/day) through all portions of the mainstem Kuskokwim River upstream from Bethel.
Author: Lisa Ann Stuby
Publisher:
ISBN:
Category : Animal radio tracking
Languages : en
Pages : 48
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Book Description
Author: Lisa Ann Stuby
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 48
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Book Description
A two-sample mark-recapture experiment was conducted to estimate inriver abundance of Chinook salmon Oncorhynchus tshawytscha in the middle and upper Kuskokwim River and associated tributaries using radiotelemetry techniques from June to August in 2005.
Author: Jordan Head
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 34
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Book Description
We conducted a 2-sample mark-recapture experiment using radiotelemetry methods to estimate the abundance of adult Chinook salmon in the middle and upper Kuskokwim River in 2014. Fish were captured using drift gillnets and fish wheels in the mainstem Kuskokwim River at river kilometer (rkm) 270 near the community of Kalskag. Chinook salmon were marked with radio and T-bar anchor tags. Tagged fish were tracked throughout the study area using stationary and aerial telemetry methods. Four weirs located upriver from the tag site were used to recapture tagged Chinook salmon. The abundance of Chinook salmon upriver of rkm 294 was 61,255 (95% CI: 49,021-80,985).
Author: Lisa Ann Stuby
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 55
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Book Description
Results of two-sample mark-recapture experiments, which were conducted to estimate inriver abundance of chinook salmon, Oncorhynchus tshawytscha, in the middle and upper Kuskokwim River and associated tributaries using radiotelemetry techniques during 2002-2006.
Author: Lisa Ann Stuby
Publisher:
ISBN:
Category : Animal radio tracking
Languages : en
Pages : 53
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Book Description
A two-sample mark-recapture experiment was conducted for chinook salmon in the Kuskokwim River and its tributaries using radiotelemetry from June to August, 2003. The objectives were to estimate abundance in the river upstream of Kalskag and to estimate age, sex, and length of those fish.
Author: Lisa Ann Stuby
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 43
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Book Description
Author: Zachary W. Liller
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 40
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Book Description
Because it is not possible to count all chinook salmon that return to the Kuskokwim River, estimates of annual abundance and escapement are made using a maximum likelihood model. The model was used to estimate the 2015 drainage-wide runs size. This report discusses the model inputs, model results, uncertainty of the estimates, and conclusions of the reconstruction model.
Author: James William Savereide
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 47
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Book Description
