Unalakleet River Chinook Salmon Escapement Monitoring And Assessment 2017 PDF Download
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| Author | : Ruslan I. Grigoriev |
| Publisher | : |
| Total Pages | : 19 |
| Release | : 2018 |
| Genre | : Chinook salmon |
| ISBN | : |
Download Unalakleet River Chinook Salmon Escapement Monitoring and Assessment, 2017 Book in PDF, ePub and Kindle
Declining run sizes and ensuing state and federal restrictions and closures to Unalakleet River Chinook salmon Oncorhynchus tshawytscha fisheries have highlighted the need to obtain more complete estimates of spawning escapement. In response, multiple agencies and entities began the Unalakleet River weir in 2010 funded by United States Fish and Wildlife Service Office of Subsistence Management. The goal was to obtain estimates of the Chinook salmon escapement and age, sex, and length composition. An estimated 2,934 Chinook salmon were enumerated during the 2017 season. The central 50% of the Chinook salmon run was enumerated between July 4 and July 8, which was earlier and of a shorter duration than the average run timing of all project years. Female Chinook salmon accounted for 49% of the fish sampled. Age composition of the sampled fish was 49% age-1.3 and 31% age-1.2 Chinook salmon.
| Author | : Scott Kent |
| Publisher | : |
| Total Pages | : 17 |
| Release | : 2014 |
| Genre | : Chinook salmon |
| ISBN | : |
Download Unalakleet River Chinook Salmon Escapement Monitoring and Assessment, 2011-2012 Book in PDF, ePub and Kindle
Declining run sizes, coupled with state and federal restrictions and closures to the Unalakleet River Chinook salmon fisheries, have highlighted the need to obtain more complete estimates of the magnitude and age, sex, and length (ASL) composition of the spawning escapement.
| Author | : Janet Bavilla |
| Publisher | : |
| Total Pages | : 17 |
| Release | : 2019 |
| Genre | : Chinook salmon |
| ISBN | : |
Download Unalakleet River Chinook Salmon Escapement Monitoring and Assessment, 2018 Book in PDF, ePub and Kindle
Declining run sizes and ensuing state and federal restrictions and closures to Unalakleet River Chinook salmon Oncorhynchus tshawytscha fisheries have highlighted the need to obtain more complete estimates of spawning escapement. In response, multiple agencies and entities began the Unalakleet River weir in 2010, funded by the United States Fish and Wildlife Service, Office of Subsistence Management. The goal was to obtain estimates of Chinook salmon escapement and age, sex, and length composition. An estimated 3,326 Chinook salmon were enumerated during the 2018 season. High water in June delayed the start date of the project. Therefore, there was uncertainty about whether the entire run was enumerated. Based on the shortened operational period, the central 50% of the Chinook salmon run was enumerated between July 13 and July 17. Female Chinook salmon accounted for 24.2% of the fish sampled. Age composition of the sampled Chinook salmon was 65.6% age-1.3, 19.9% age-1.2, and 13.6% age-1.4.
| Author | : Scott Kent |
| Publisher | : |
| Total Pages | : 15 |
| Release | : 2016 |
| Genre | : Chinook salmon |
| ISBN | : |
Download Unalakleet River Chinook Salmon Escapement Monitoring and Assessment, 2015 Book in PDF, ePub and Kindle
Declining run sizes and ensuing state and federal restrictions and closures to Unalakleet River Chinook salmon Oncorhynchus tshawytscha fisheries highlighted the need to obtain more complete estimates of spawning escapement. In response, multiple agencies and entities began the Unalakleet River weir in 2010 funded by United States Fish and Wildlife Service's Office of Subsistence Management. The goal was to obtain estimates of the mainstem Chinook salmon escapement and age, sex, and length composition. An estimated 2,789 Chinook salmon were enumerated during the 2015 season. The central 50% of the Chinook salmon run was enumerated 7 July to 15 July in 2015. Interpolation was not needed in 2015 because there were only minor breaches that were repaired quickly. Female Chinook salmon comprised 37% of the fish sampled for age, sex, and length data and age composition of the samples was 40% age-1.3 and 35% age-1.4 Chinook salmon.
| Author | : Jenefer Bell |
| Publisher | : |
| Total Pages | : 13 |
| Release | : 2017 |
| Genre | : Chinook salmon |
| ISBN | : |
Download Unalakleet River Chinook Salmon Escapement Monitoring and Assessment, 2016 Book in PDF, ePub and Kindle
Declining run sizes and ensuing state and federal restrictions and closures to Unalakleet River Chinook salmon Oncorhynchus tshawytscha fisheries highlighted the need to obtain more complete estimates of spawning escapement. In response, multiple agencies and entities began the Unalakleet River weir in 2010 funded by United States Fish and Wildlife Service's Office of Subsistence Management. The goal was to obtain estimates of the mainstem Chinook salmon escapement and age, sex, and length (ASL) composition. An estimated 505 Chinook salmon were enumerated during the 2016 season. High water and numerous pink salmon O. gorbuscha contributed to an incomplete count of Chinook salmon in 2016, therefore the escapement estimate should be considered a minimum count and run timing could not be determined. A total of 25 ASL samples were collected but did not meet minimum sample size requirements and could not be used to estimate female percentage or age composition. Despite issues with operations in 2016, the Unalakleet River weir is an important tool for fishery managers and increased oversight and training will ensure it remains a viable option for monitoring Chinook salmon in the Unalakleet River.
| Author | : Scott Kent |
| Publisher | : |
| Total Pages | : 17 |
| Release | : 2016 |
| Genre | : Chinook salmon |
| ISBN | : |
Download Unalakleet River Chinook Salmon Escapement Monitoring and Assessment, 2013-2014 Book in PDF, ePub and Kindle
Declining run sizes and ensuing state and federal restrictions and closures to Unalakleet River Chinook salmon Oncorhynchus tshawytscha fisheries highlighted the need to obtain more complete estimates of spawning escapement. In response, multiple agencies and entities began the Unalakleet River weir project in 2010 funded by United States Fish and Wildlife Service's Office of Subsistence Management to obtain estimates of the mainstem Chinook salmon escapement and its age, sex, and length composition. An estimated 667 and 1,126 Chinook salmon were enumerated during the 2013 and 2014 seasons. The central 50% of the Chinook salmon run was enumerated 7 July-18 July in 2013 and could not be determined in 2014 because Chinook salmon passage was not fully evaluated. In 2013, there were 3 days of partial counts. Interpolation of missed counts could not be completed in 2014 because of incomplete information about the exact duration and extent of unmonitored periods. Age composition could not be determined from the 2013 escapement samples because the minimum sampling goal was not achieved; sex composition was 52% female. In 2014, age-1.3 Chinook salmon comprised the majority (68%) of the escapement samples.
| Author | : Jeffrey L. Estensen |
| Publisher | : |
| Total Pages | : 74 |
| Release | : 2006 |
| Genre | : Chinook salmon |
| ISBN | : |
Download A Summary of Harvest and Escapement Information and Recommendations for Improved Data Collection and Escapement Goals for Unalakleet River Chinook Salmon Book in PDF, ePub and Kindle
This report provides a description of the chinook salmon, Oncorhynchus tshawytscha, fisheries in the Unalakleet Area; summarizes available harvest, escapement, age and sex information for returns to the Unalakleet River; and provides recommendations for improved data collection and escapement goals.
| Author | : Klaus G. Wuttig |
| Publisher | : |
| Total Pages | : 44 |
| Release | : 1999 |
| Genre | : Chinook salmon |
| ISBN | : |
Download Escapement of Chinook Salmon in the Unalakleet River in 1998 Book in PDF, ePub and Kindle
| Author | : Brian W. Elliott |
| Publisher | : |
| Total Pages | : 0 |
| Release | : 2022 |
| Genre | : Chinook salmon |
| ISBN | : |
Download Operational Plan: Chilkat River Chinook Salmon Escapement Studies in 2021 Book in PDF, ePub and Kindle
Chilkat River large (age-1.3 and older) Chinook salmon Oncorhynchus tshawytscha inriver abundance and age and sex composition will be estimated using a 2-event mark-recapture experiment in 2019. Event 1 capture and marking will be conducted in the lower Chilkat River, and event 2 recapture will be conducted in principal spawning areas within the Chilkat River drainage. Data produced from this project will include spawning abundance of large Chinook salmon, age and sex compositions of the run, and when possible, age-1.2 abundance and length composition in the Chilkat River drainage. Chilkat River Chinook salmon are an exploitation rate and escapement indicator stock for the Pacific Salmon Commission Chinook Technical Committee, and it has been proposed that this stock be included in the coastwide Chinook salmon model used by the Pacific Salmon Commission to monitor coastwide abundance. Mark-recapture experiments have been conducted in the Chilkat River drainage since 1991; escapement estimates for 1991-2018 have an average coefficient of variation of 14%, which contributes toward precise stock assessment production estimates for the Chilkat River Chinook salmon stock. As part of the ongoing Chilkat River Chinook salmon coded wire tag studies, all Chinook salmon encountered in the mark-recapture experiment will be examined for adipose fin clips and the presence of a coded wire tag, which can be used for estimating juvenile production and marine harvest. Data collected from this project will be used to create full production estimates for the Chilkat stock.
| Author | : Dave Farout |
| Publisher | : |
| Total Pages | : 0 |
| Release | : 1998 |
| Genre | : Chinook salmon |
| ISBN | : |
Download Listed Stock Chinook Salmon Escapement Monitoring in the Secesh River, Idaho, 1997 Book in PDF, ePub and Kindle
