Sockeye Salmon Escapement Studies at the Russian River PDF Download
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Author: Jenny L. Gates
Publisher:
ISBN:
Category : Fish populations
Languages : en
Pages : 30
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Book Description
Russian River escapement data has been collected since 1962 and is one of the oldest stock assessment projects in the state of Alaska. During 2019–2022, the Russian River weir will be operated annually from early June through the first week 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: Jenny L. Gates
Publisher:
ISBN:
Category : Fish populations
Languages : en
Pages : 30
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Book Description
Russian River escapement data has been collected since 1962 and is one of the oldest stock assessment projects in the state of Alaska. During 2019–2022, the Russian River weir will be operated annually from early June through the first week 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: 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: Doug Vincent-Lang
Publisher:
ISBN:
Category : Fishery management
Languages : en
Pages : 47
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Book Description
Report of a study of the rate at which sockeye salmon (Onchorychus nerka) return to the Russian River, a tributary of the Kenai River in southern Alaska, and proposal for a new management goal.
Author: Jamie A. Carlon
Publisher:
ISBN:
Category : Escapement (Fisheries)
Languages : en
Pages : 46
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Book Description
Author: David Charles Nelson
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 76
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Book Description
Author: Anthony Alexander Eskelin
Publisher:
ISBN:
Category : Fish stock identification
Languages : en
Pages : 0
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Book Description
Sockeye salmon were sampled for genetic tissue in the lower Kenai River at river mile (RM) 8.6 during the 2018–2020 early runs (prior to 1 July) for genetic mixed stock analysis (MSA) of stock composition for 3 reporting groups (Russian River Early, Russian River Late, and Kenai River Other) and 5 temporal strata (16 May–3 June, 4–10 June, 11–16 June, 17–23 June, and 24–30 June) each year. The MSAs represent the first stock composition estimates for sockeye salmon entering the Kenai River during the early run. Stock compositions were dominated by Russian River Early fish each year, especially for strata occurring prior to 24 June. Daily Kenai River RM 13.7 sonar passage estimates of fish between 40 cm and 75 cm (small fish) were used with stock composition estimates by stratum and summed to estimate Russian River Early sockeye salmon passage prior to 1 July each year. Russian River Early fish represented an estimated 0.91 (2018), 0.92 (2019), and 0.75 (2020) of the estimated small fish passage at RM 13.7 each year and averaged 0.86 for all 3 years (2018–2020). Estimated passage of Russian River Early fish was highest for the 4–10 June stratum (35% of each year’s early run, on average) and the 11–16 June stratum (28% of each year’s early run, on average), with those 2 strata accounting for 62% of estimated Russian River Early fish passage on average at RM 13.7. The last stratum (24–30 June) had the lowest estimated passage of Russian River Early fish, accounting for 7% of each year’s early run, on average. These results will be used to better predict inseason run strengths of Russian River early-run sockeye salmon, thereby increasing management precision to meet the escapement goal.
Author: Alaska. Division of Sport Fish
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Larry E. Marsh
Publisher:
ISBN:
Category : Fishery resources
Languages : en
Pages : 42
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Author: Larry E. Marsh
Publisher:
ISBN:
Category : Fishery resources
Languages : en
Pages : 33
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Book Description
Author: David Charles Nelson
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 50
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Book Description
