Unalakleet River Chinook Salmon Escapement Monitoring And Assessment 2013 2014

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Unalakleet River Chinook Salmon Escapement Monitoring and Assessment, 2013-2014

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Author : Scott Kent
Publisher :
ISBN 13 :
Total Pages : 17 pages
Book Rating : 4.:/5 (964 download)

Book Synopsis Unalakleet River Chinook Salmon Escapement Monitoring and Assessment, 2013-2014 by : Scott Kent

Download or read book Unalakleet River Chinook Salmon Escapement Monitoring and Assessment, 2013-2014 written by Scott Kent and published by . This book was released on 2016 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Unalakleet River Chinook Salmon Escapement Monitoring and Assessment, 2011-2012

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Author : Scott Kent
Publisher :
ISBN 13 :
Total Pages : 17 pages
Book Rating : 4.:/5 (894 download)

Book Synopsis Unalakleet River Chinook Salmon Escapement Monitoring and Assessment, 2011-2012 by : Scott Kent

Download or read book Unalakleet River Chinook Salmon Escapement Monitoring and Assessment, 2011-2012 written by Scott Kent and published by . This book was released on 2014 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Unalakleet River Chinook Salmon Escapement Monitoring and Assessment, 2016

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Author : Jenefer Bell
Publisher :
ISBN 13 :
Total Pages : 13 pages
Book Rating : 4.:/5 (12 download)

Book Synopsis Unalakleet River Chinook Salmon Escapement Monitoring and Assessment, 2016 by : Jenefer Bell

Download or read book Unalakleet River Chinook Salmon Escapement Monitoring and Assessment, 2016 written by Jenefer Bell and published by . This book was released on 2017 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Unalakleet River Chinook Salmon Escapement Monitoring and Assessment, 2015

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Author : Scott Kent
Publisher :
ISBN 13 :
Total Pages : 15 pages
Book Rating : 4.:/5 (964 download)

Book Synopsis Unalakleet River Chinook Salmon Escapement Monitoring and Assessment, 2015 by : Scott Kent

Download or read book Unalakleet River Chinook Salmon Escapement Monitoring and Assessment, 2015 written by Scott Kent and published by . This book was released on 2016 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Unalakleet River Chinook Salmon Escapement Monitoring and Assessment, 2018

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Author : Janet Bavilla
Publisher :
ISBN 13 :
Total Pages : 17 pages
Book Rating : 4.:/5 (114 download)

Book Synopsis Unalakleet River Chinook Salmon Escapement Monitoring and Assessment, 2018 by : Janet Bavilla

Download or read book Unalakleet River Chinook Salmon Escapement Monitoring and Assessment, 2018 written by Janet Bavilla and published by . This book was released on 2019 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Unalakleet River Chinook Salmon Escapement Monitoring and Assessment, 2017

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Author : Ruslan I. Grigoriev
Publisher :
ISBN 13 :
Total Pages : 19 pages
Book Rating : 4.:/5 (15 download)

Book Synopsis Unalakleet River Chinook Salmon Escapement Monitoring and Assessment, 2017 by : Ruslan I. Grigoriev

Download or read book Unalakleet River Chinook Salmon Escapement Monitoring and Assessment, 2017 written by Ruslan I. Grigoriev and published by . This book was released on 2018 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

A Summary of Harvest and Escapement Information and Recommendations for Improved Data Collection and Escapement Goals for Unalakleet River Chinook Salmon

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Author : Jeffrey L. Estensen
Publisher :
ISBN 13 :
Total Pages : 74 pages
Book Rating : 4.:/5 (319 download)

Book Synopsis A Summary of Harvest and Escapement Information and Recommendations for Improved Data Collection and Escapement Goals for Unalakleet River Chinook Salmon by : Jeffrey L. Estensen

Download or read book A Summary of Harvest and Escapement Information and Recommendations for Improved Data Collection and Escapement Goals for Unalakleet River Chinook Salmon written by Jeffrey L. Estensen and published by . This book was released on 2006 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Escapement of Chinook Salmon in the Unalakleet River in 1998

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Author : Klaus G. Wuttig
Publisher :
ISBN 13 :
Total Pages : 44 pages
Book Rating : 4.:/5 (419 download)

Book Synopsis Escapement of Chinook Salmon in the Unalakleet River in 1998 by : Klaus G. Wuttig

Download or read book Escapement of Chinook Salmon in the Unalakleet River in 1998 written by Klaus G. Wuttig and published by . This book was released on 1999 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Anchor River Chinook Salmon Escapement, 2013

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Author : Carol M. Kerkvliet
Publisher :
ISBN 13 :
Total Pages : 73 pages
Book Rating : 4.:/5 (112 download)

Book Synopsis Anchor River Chinook Salmon Escapement, 2013 by : Carol M. Kerkvliet

Download or read book Anchor River Chinook Salmon Escapement, 2013 written by Carol M. Kerkvliet and published by . This book was released on 2018 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 2013 Anchor River Chinook salmon (Oncorhynchus tshawytscha) escapement (4,401 fish, SE 117) fell within the sustainable escapement goal (SEG) range of 3,800?10,000 fish. High river flows changed the channel morphology at the confluence of the north and south forks, which rendered the 2003?2012 mainstem dual-frequency identification sonar (DIDSON) site unsuitable for monitoring escapement. Thus, for the 2013 season, the DIDSON was relocated about 0.3 RKM downstream and was operated throughout the high-water period. Once flows subsided, 2 alternative escapement monitoring sites were identified upstream: 1 on the south fork and 1 on the north fork. The north fork site was located approximately 1.5 RKM upstream from the confluence and the south fork site was located approximately 0.2 RKM upstream of the confluence. Weirs and underwater video systems were used at both sites to monitor escapement. The midpoint of the Chinook salmon run was 19 June. The daily Chinook salmon escapement counts were positively correlated with daily average river stage, but not with daily average river temperature. The dominant age class was ocean age 3 (43.5%, SE 4.1%). Overall mean length of males (604 mm, SE 15) was smaller than that of females (734 mm, SE 25). The inriver sport fishery was restricted by a series of emergency orders that probably resulted in a near record low harvest of 97 fish.

Salmon Escapement Monitoring on the Kuskokwim River, 2013

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Author : Tracy R. Hansen
Publisher :
ISBN 13 :
Total Pages : 109 pages
Book Rating : 4.:/5 (94 download)

Book Synopsis Salmon Escapement Monitoring on the Kuskokwim River, 2013 by : Tracy R. Hansen

Download or read book Salmon Escapement Monitoring on the Kuskokwim River, 2013 written by Tracy R. Hansen and published by . This book was released on 2014 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Kuskokwim River drainage is a remote area in western Alaska where Pacific salmon Oncorhynchus spp. return to spawn and play a fundamental role in the local economy and food supply. Each year the Alaska Department of Fish and Game, in collaboration with other entities, operates escapement monitoring projects throughout Kuskokwim River tributaries.

Operational Plan: Chilkat River Chinook Salmon Escapement Studies in 2021

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Author : Brian W. Elliott
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (134 download)

Book Synopsis Operational Plan: Chilkat River Chinook Salmon Escapement Studies in 2021 by : Brian W. Elliott

Download or read book Operational Plan: Chilkat River Chinook Salmon Escapement Studies in 2021 written by Brian W. Elliott and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Chinook Salmon Escapement and Run Timing in the Gulkana River, 2013-2015

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Author : Corey J. Schwanke
Publisher :
ISBN 13 :
Total Pages : 32 pages
Book Rating : 4.:/5 (12 download)

Book Synopsis Chinook Salmon Escapement and Run Timing in the Gulkana River, 2013-2015 by : Corey J. Schwanke

Download or read book Chinook Salmon Escapement and Run Timing in the Gulkana River, 2013-2015 written by Corey J. Schwanke and published by . This book was released on 2016 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Counting tower techniques were used to estimate Chinook salmon Oncorhynchus tshawytscha escapement at the Gulkana River for 2013, 2014 and 2015. The counting tower was located in the mainstem Gulkana River about 2.5 rkm upstream of the West Fork Gulkana River confluence. The counting tower was operational for all 3 years for the entire Chinook salmon run and a portion of the sockeye salmon O. nerka run. The estimated escapement of Chinook salmon was 3,936 (SE = 215; 95% CI = 3,515-4,357) in 2013, 3,478 (SE = 271; 95% CI = 2,947-4,009) in 2014, and 3,738 (SE = 251; 95% CI = 3,246-4,230) in 2015. These numbers do not represent total inriver escapement, just passage above the counting tower site. The date of 50th percentile passage of Chinook salmon varied from 14 July in 2013 to 5 July in 2015. The estimated escapement of sockeye salmon during the counting tower's operational period was 48,024 (SE = 1,834; 95% CI = 44,429-51,619) in 2013, 27,186 (SE = 1,236; 95% CI = 24,763-29,609) in 2014 and 24,624 (SE = 970; 95% CI = 22,723-26,525) in 2015.

Operational Plan: Chilkat River Chinook Salmon Escapement Studies in 2019

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Author : Brian W. Elliott
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (133 download)

Book Synopsis Operational Plan: Chilkat River Chinook Salmon Escapement Studies in 2019 by : Brian W. Elliott

Download or read book Operational Plan: Chilkat River Chinook Salmon Escapement Studies in 2019 written by Brian W. Elliott and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Estimation of Chinook Salmon Escapement in the Taku River, 2013

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Author : Jeffrey Todd Williams
Publisher :
ISBN 13 :
Total Pages : 40 pages
Book Rating : 4.:/5 (858 download)

Book Synopsis Estimation of Chinook Salmon Escapement in the Taku River, 2013 by : Jeffrey Todd Williams

Download or read book Estimation of Chinook Salmon Escapement in the Taku River, 2013 written by Jeffrey Todd Williams and published by . This book was released on 2013 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Anchor River Chinook Salmon Escapement, 2014

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Author : Carol M. Kerkvliet
Publisher :
ISBN 13 :
Total Pages : 73 pages
Book Rating : 4.:/5 (124 download)

Book Synopsis Anchor River Chinook Salmon Escapement, 2014 by : Carol M. Kerkvliet

Download or read book Anchor River Chinook Salmon Escapement, 2014 written by Carol M. Kerkvliet and published by . This book was released on 2020 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 2014, the Anchor River Chinook salmon (Oncorhynchus tshawytscha) escapement was fully enumerated with combined daily counts from the north and south forks of the Anchor River using weirs fitted with underwater video systems. The 2014 escapement (2,499) fell below the sustainable escapement goal (SEG) range of 3,800-10,000 Chinook salmon. It was the lowest escapement observed since Chinook salmon were first fully enumerated on the Anchor River in 2003. A series of emergency orders were issued in 2014 that restricted the inriver and nearby marine sport fisheries. The midpoint of the combined north and south fork Chinook salmon runs occurred on 15 June. No correlation was detected between daily Chinook salmon counts on the south fork and average river stage or average river temperature. Age composition was estimated from samples collected during weekly beach seining in the mainstem, downstream of the weirs. The dominant age class was ocean age 3 (40.4%; SE 3.0%). No significant differences were detected between mean lengths of ocean-age-3 males and females or between ocean-age-4 males and females. There were no significant differences between the proportion Chinook salmon ≤508 mm total length collected from beach seine samples and video weir observations. The escapement and age composition data will be used in a spawner-recruit analysis to derive appropriate escapement goals.

Listed Stock Chinook Salmon Escapement Monitoring in the Secesh River, Idaho, 1997

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Author : Dave Farout
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (135 download)

Book Synopsis Listed Stock Chinook Salmon Escapement Monitoring in the Secesh River, Idaho, 1997 by : Dave Farout

Download or read book Listed Stock Chinook Salmon Escapement Monitoring in the Secesh River, Idaho, 1997 written by Dave Farout and published by . This book was released on 1998 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Escapement Monitoring of Adult Chinook Salmon in the Secesh River and Lake Creek, Idaho, 1999

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Author : Dave Faurot
Publisher :
ISBN 13 :
Total Pages : 80 pages
Book Rating : 4.:/5 (478 download)

Book Synopsis Escapement Monitoring of Adult Chinook Salmon in the Secesh River and Lake Creek, Idaho, 1999 by : Dave Faurot

Download or read book Escapement Monitoring of Adult Chinook Salmon in the Secesh River and Lake Creek, Idaho, 1999 written by Dave Faurot and published by . This book was released on 2001 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: