Download or read book Evidence for an Optimum Escapement of Sockeye Salmon in the Kenai River Basin written by Steven P. Cramer and published by . This book was released on 1999 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Escapement Goal Review for Kenai River Late run Sockeye Salmon written by John H. Clark and published by . This book was released on 2007 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Kenai River Sockeye Salmon Biological Escapement Goal Review Team Findings written by Stephen M. Fried and published by . This book was released on 1995 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Spawner recruit Analysis and Escapement Goal Recommendation for Kenai River Late run Sockeye Salmon written by James J. Hasbrouck and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The current sustainable escapement goal (700,000–1,200,000) for Kenai River late-run sockeye salmon was established in 2011. For this escapement goal review, the escapement time series and production data were updated through 2018. The fit of 6 spawner–recruit models to data from brood years 1968–2012 and brood years 1979–2012 was examined. Although the classic Ricker model was determined the most appropriate to use given the data, all brood years were estimated to have replaced themselves, which compromised obtaining accurate and precise estimates of most model parameter estimates and biological reference points, including a scientifically defensible estimate of maximum sustained yield. Markov-type yield tables were constructed to evaluate yields at different levels of escapement. We recommend the sustainable escapement goal for Kenai River late-run sockeye salmon be revised to 750,000–1,300,000 fish because the analyses indicated escapements in this range will likely provide better yields.

Download or read book Summary Report of Studies on the Optimum Escapement of Sockeye Salmon in Southwestern Alaska 1961 62 written by Auke Bay Fisheries Laboratory and published by . This book was released on 1964 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Southeastern Alaska Sockeye Salmon Optimum Escapement Studies written by Fred Bergander and published by . This book was released on 1973 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Optimum Escapement Studies of Chignik Sockeye Salmon written by Robert Louis Burgner and published by . This book was released on 1974 with total page 91 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Optimum Escapement Studies of Chignik Sockeye Salmon written by John West Wells and published by . This book was released on 1973 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Sockeye Salmon Escapement Studies at the Russian River written by Jenny L. Gates and published by . This book was released on 2021 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Upper Cook Inlet Sockeye Salmon Escapement Studies 2014 written by William J. Glick and published by . This book was released on 2016 with total page 115 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 2014, the Alaska Department of Fish and Game used dual-frequency identification sonar to estimate an escapement of 1,520,340 (95% CI: 1,494,105-1,546,575) sockeye salmon (Oncorhynchus nerka) into the Kenai River, 440,192 (95% CI: 438,380-442,003) into the Kasilof River, and 55,759-137,256 into the Yentna River. Escapement estimates for the Kenai River were adjusted postseason relating to an overlap of sockeye and pink salmon. An escapement range for the Yentna River was estimated postseason for sockeye, pink (O. gorbuscha), chum (O. keta), and coho (O. kisutch) salmon from 6 sets of fish wheel selectivity indices obtained from the literature. The predominant age classes for sockeye salmon in the Kenai River were 1.2 (12.3%), 1.3 (63.5%), 2.2 (7.2%), and 2.3 (15.3%); Kasilof River 1.2 (42.4%), 1.3 (29.4%), and 2.2 (20.6%); Yentna River 1.2 (39.4%), 1.3 (33.3%), 2.2 (12.4%) and 2.3 (10.2%). Length and sex ratio information were also collected for sockeye salmon at each river. Results of escapement projects conducted by other agencies and organizations are also briefly mentioned in this report.

Download or read book Optimum Escapement Studies of Chignik Sockeye Salmon written by Duane E. Phinney and published by . This book was released on 1968 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Upper Cook Inlet Sockeye Salmon Escapement Studies 2015 written by William J. Glick and published by . This book was released on 2018 with total page 91 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 2015, the Alaska Department of Fish and Game (ADF&G) used dual frequency identification sonars to estimate an escapement of 1,709,051 (95% CI: 1,708,905 - 1,709,197) sockeye salmon (Oncorhynchus nerka) into the Kenai River, and 470,677 (95% CI: 469,545 - 471,808) sockeye salmon into the Kasilof River. Fish wheel sampling determined that predominant age classes for sockeye salmon in the Kenai River were 1.2 (18.6%), 1.3 (47.5%), 2.2 (6.7%), and 2.3 (26.2%); Kasilof River 1.2 (21.0%), 1.3 (34.7%), and 2.2 (35.1%); Yentna River 1.2 (18.9%), 1.3 (62.3%), and 2.3 (9.5%). Length and sex ratio information were also collected for sockeye salmon at each river. Results of escapement projects conducted by other agencies and organizations are also briefly mentioned in this report.

Download or read book Biological Studies and Estimates of Optimum Escapements of Sockeye Salmon in the Major River Systems in Southwestern Alaska written by Robert Louis Burgner and published by . This book was released on 1969 with total page 55 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Sockeye Salmon Overescapement Kenai River Component Restoration Project 96258A 1 Final Report written by Alaska. Department of Fish and Game and published by Anchorage, Alaska : Alaska Department of Fish and Game, Division of Commercial Fisheries. This book was released on 2003 with total page 49 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Sockeye Salmon Overescapement Kenai River Component written by and published by . This book was released on 2003 with total page 49 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Russian River Early run Sockeye Salmon Run Timing Into the Kenai River 2018 2020 written by Anthony Alexander Eskelin and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Development and Implementation of Escapement Goals for the Early Return of Sockeye Salmon to the Russian River Alaska written by Doug Vincent-Lang and published by . This book was released on 1991 with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.