Gulkana River Chinook Salmon Spawning Distribution and Run Timing, 2013-2015

Download Gulkana River Chinook Salmon Spawning Distribution and Run Timing, 2013-2015 PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 40 pages
Book Rating : 4.:/5 (18 download)

DOWNLOAD NOW!


Book Synopsis Gulkana River Chinook Salmon Spawning Distribution and Run Timing, 2013-2015 by : Corey J. Schwanke

Download or read book Gulkana River Chinook Salmon Spawning Distribution and Run Timing, 2013-2015 written by Corey J. Schwanke and published by . This book was released on 2018 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chinook salmon were radiotagged near the confluence of the Gulkana and Copper rivers from 2013-2015 to determine run timing and spawning distribution in the Gulkana River. The main goal was estimating what proportion of the Chinook salmon escapement spawned above an ADF&G operated counting tower located approximately 79.5 rkm up the Gulkana River. Age, sex, and length composition of the escapement was also estimated. A total of 412 Chinook salmon were radiotagged from 2013?2015 using dip nets and hook and line as capture gear. The proportion of Chinook salmon that spawned above the ADF&G counting tower was 0.51 (SE = 0.072) in 2013, 0.45 (SE = 0.073) in 2014, and 0.54 (SE = 0.038) in 2015. Fish spawning above the ADF&G counting tower had a slightly earlier run timing than fish spawning below the counting tower with annual mean dates of passage past the lowest inriver tracking station being 0?7 days earlier. Further examining run timing by river reach, Chinook salmon that spawned in the tributaries and upper mainstem of the Gulkana River had earlier run timing than those spawning in the middle to lower mainstem. The estimated percentage of females that spawned above the counting tower varied by year. Females comprised an estimated 53% (SE = 6%) of the escapement in 2013, 29% (SE = 10%) in 2014, and 51% (SE = 4%) in 2015. Age-1.3 Chinook salmon was the most abundant age class, accounting for 81% (SE = 5%) of the estimated escapement in 2013, 48% (SE = 6%) in 2014, and 88% (SE = 3%) in 2015. Chinook salmon in the length class 751-850 mm mid eye to tail fork accounted for the majority of the estimated annual escapement, ranging between 46% (SE = 6%) and 63% (SE = 4%). This study found several positive relationships with fish traits (e.g., sex, length, and run timing) and spawning success specific to the Gulkana River. Male fish, longer fish, and fish with earlier run timings all had better chances of spawning during this study.

Gulkana River Chinook Salmon Distribution

Download Gulkana River Chinook Salmon Distribution PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 16 pages
Book Rating : 4.:/5 (852 download)

DOWNLOAD NOW!


Book Synopsis Gulkana River Chinook Salmon Distribution by : Corey J. Schwanke

Download or read book Gulkana River Chinook Salmon Distribution written by Corey J. Schwanke and published by . This book was released on 2013 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study estimates the spawning distribution and run timing patterns of Chinook salmon in the Gulkana River and it also estimates proportions of Chinook salmon spawning above and below the counting tower. The study also discusses age, sex, and length (ASL) information collected from Chinook salmon. This information is used to characterize the composition of the Chinook salmon escapement and use that information in an age-structured model to evaluate the escapement goal and forecast returns.

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

Download Chinook Salmon Escapement and Run Timing in the Gulkana River, 2013-2015 PDF Online Free

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

DOWNLOAD NOW!


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.

Chinook Salmon Escapement and Run Timing in the Gulkana River, 2011-2012

Download Chinook Salmon Escapement and Run Timing in the Gulkana River, 2011-2012 PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 29 pages
Book Rating : 4.:/5 (84 download)

DOWNLOAD NOW!


Book Synopsis Chinook Salmon Escapement and Run Timing in the Gulkana River, 2011-2012 by : Scott H. Maclean

Download or read book Chinook Salmon Escapement and Run Timing in the Gulkana River, 2011-2012 written by Scott H. Maclean and published by . This book was released on 2013 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Run Timing and Spawning Distribution of Copper River Chinook Salmon, 2019-2021

Download Run Timing and Spawning Distribution of Copper River Chinook Salmon, 2019-2021 PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (139 download)

DOWNLOAD NOW!


Book Synopsis Run Timing and Spawning Distribution of Copper River Chinook Salmon, 2019-2021 by : Corey J. Schwanke

Download or read book Run Timing and Spawning Distribution of Copper River Chinook Salmon, 2019-2021 written by Corey J. Schwanke and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A total of 1,975 radio tags were placed in migrating Chinook salmon Oncorhynchus tshawytscha in the Copper River from 2019 through 2021 to examine spawning distribution and run timing. Chinook salmon were captured with fish wheels in the Lower Copper River near Baird Canyon and tracked to upriver destinations with 10 fixed-tracking stations and a series of aerial surveys. Spawning distribution was estimated for 6 major spawning tributaries/areas each year using a weighting process. Estimated annual proportions of the escapement ranged from 0.19 to 0.24 for the Upper Copper River area, 0.19–0.27 for the Gulkana River, 0.01–0.05 for the Tazlina River, 0.10–0.19 for the Tonsina River, 0.19–0.28 for the Chitina River, and was 0.14 all 3 years for the Klutina River. Estimated annual abundances for the 6 major spawning tributary/areas from 2019 through 2021 were 3,410–8,369 for the Upper Copper River area, 4,419–6,548 for the Gulkana River, 289–961 for the Tazlina River, 2,171–4,591 for the Tonsina River, 3,535–9,767 for the Chitina River, and 2,608–4,909 for the Klutina River. The annual estimated proportions of the total escapement that returned to 1 of the 9 original aerial index streams ranged from 0.39 to 0.47. The estimated annual proportion of the Gulkana River fish that spawned above the Alaska Department of Fish & Game (ADF&G) counting tower ranged from 0.58 to 0.68. Run timing patterns were similar during all 3 years with the Upper Copper River fish having the earliest run timings, followed by the Gulkana, Chitina, Tazlina, Tonsina, and Klutina Rivers. A secondary analysis was performed weighting each radiotagged fish using adaptive resolution imaging sonar (ARIS) estimates of “large” fish, which are all presumed to be Chinook salmon. These results are presented in this report as Appendix A.

Operational Plan Amendment

Download Operational Plan Amendment PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 22 pages
Book Rating : 4.:/5 (125 download)

DOWNLOAD NOW!


Book Synopsis Operational Plan Amendment by : Corey J. Schwanke

Download or read book Operational Plan Amendment written by Corey J. Schwanke and published by . This book was released on 2021 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: The primary purpose of this study is to continue to update the spawning distribution and run timing of Chinook salmon in the Copper River drainage. These stock specific traits were previously estimated from 1999–2004, then again in 2019 and 2020. The purpose of this amendment is to formally acknowledge additional funding for a final year (2021) of the project through the ADF&G Operational Plan process. This amendment updates ROP.SF.3F.2019.04.

Gulkana River Chinook Salmon Escapement Estimation, 2022-2026

Download Gulkana River Chinook Salmon Escapement Estimation, 2022-2026 PDF Online Free

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

DOWNLOAD NOW!


Book Synopsis Gulkana River Chinook Salmon Escapement Estimation, 2022-2026 by : Tracy R. Hansen

Download or read book Gulkana River Chinook Salmon Escapement Estimation, 2022-2026 written by Tracy R. Hansen and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Objectives of this study are to estimate the spawning escapement and run timing of Chinook salmon Oncorhynchus tshawytscha in an index area of the Gulkana River using counting tower methodology. In addition, sockeye salmon O. nerka escapement at the tower site will be estimated during the period of tower operation. The number of Chinook salmon and sockeye salmon passing the tower site will be estimated by visually counting fish as they pass 2 counting towers located approximately 2.5 km upstream of the confluence of the West Fork. Ten-minute visual counts will be conducted for each river channel every hour, 24 hours per day, 7 days per week. The abundance estimates will be stratified by day. Because counts are planned for all hours, daily estimates of abundance will be a single-stage direct expansion from the 10 min counting periods. The count schedule will start prior to the beginning of the Chinook salmon run, approximately 3 June, and continue until after 10 August when the run is complete. Tower operations may be extended to a later date to enumerate more of the sockeye salmon run if funding is provided by Prince William Sound Aquaculture Corporation.

Chinook Salmon Escapement and Run Timing in the Gulkana River, 2016-2018

Download Chinook Salmon Escapement and Run Timing in the Gulkana River, 2016-2018 PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 26 pages
Book Rating : 4.:/5 (114 download)

DOWNLOAD NOW!


Book Synopsis Chinook Salmon Escapement and Run Timing in the Gulkana River, 2016-2018 by : Corey J. Schwanke

Download or read book Chinook Salmon Escapement and Run Timing in the Gulkana River, 2016-2018 written by Corey J. Schwanke and published by . This book was released on 2019 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: Counting tower techniques were used to estimate Chinook salmon Oncorhynchus tshawytscha escapement in the Gulkana River during 2016, 2017, and 2018. The counting tower was located in the mainstem Gulkana River about 3.25 rkm upstream of the West Fork Gulkana River confluence. The estimated escapement of Chinook salmon was 1,122 (SE = 166; 95% CI = 796-1,447) in 2016, 3,336 (SE = 309; 95% CI = 2,730-3,942) in 2017, and 5,174 (SE = 344; 95% CI = 4,499-5,848) in 2018. These numbers do not represent total inriver escapement, just passage above the counting tower site. The 2016 estimated escapement of Chinook salmon was the lowest since the inception of the project in 2002, whereas the 2018 estimated escapement was the 2nd highest on record and had the latest run timing. The dates of 25th, 50th, and 75th percentile passage of Chinook salmon have been getting later since the project's inception in 2002. The estimated escapement of sockeye salmon O. nerka during the counting tower's operational period was 26,010 (SE = 1,157; 95% CI = 23,743-28,277) in 2016, 20,492 (SE = 927; 95% CI = 18,675-22,309) in 2017, and 12,436 (SE = 540; 95% CI = 11,377-13,494) in 2018. The partial sockeye salmon escapement estimate in 2018 was the 2nd lowest since the inception of this project in 2002.

Run Timing and Spawning Distribution of Coho and Late Run Chinook Salmon in the Kasilof River Watershed, Alaska, 1987

Download Run Timing and Spawning Distribution of Coho and Late Run Chinook Salmon in the Kasilof River Watershed, Alaska, 1987 PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 36 pages
Book Rating : 4.:/5 (278 download)

DOWNLOAD NOW!


Book Synopsis Run Timing and Spawning Distribution of Coho and Late Run Chinook Salmon in the Kasilof River Watershed, Alaska, 1987 by : Dave Faurot

Download or read book Run Timing and Spawning Distribution of Coho and Late Run Chinook Salmon in the Kasilof River Watershed, Alaska, 1987 written by Dave Faurot and published by . This book was released on 1990 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

A Comparison of Run Timing, Spawn Timing and Spawning Distribution of Natural and Hatchery Spring Chinook Salmon Oncorhynchus Tshawytscha in the Imnaha River, Oregon

Download A Comparison of Run Timing, Spawn Timing and Spawning Distribution of Natural and Hatchery Spring Chinook Salmon Oncorhynchus Tshawytscha in the Imnaha River, Oregon PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 22 pages
Book Rating : 4.:/5 (67 download)

DOWNLOAD NOW!


Book Synopsis A Comparison of Run Timing, Spawn Timing and Spawning Distribution of Natural and Hatchery Spring Chinook Salmon Oncorhynchus Tshawytscha in the Imnaha River, Oregon by : Timothy L. Hoffnagle

Download or read book A Comparison of Run Timing, Spawn Timing and Spawning Distribution of Natural and Hatchery Spring Chinook Salmon Oncorhynchus Tshawytscha in the Imnaha River, Oregon written by Timothy L. Hoffnagle and published by . This book was released on 2005 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Spawning Distribution and Run Timing of Copper River Sockeye Salmon, 2008 Annual Report

Download Spawning Distribution and Run Timing of Copper River Sockeye Salmon, 2008 Annual Report PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 38 pages
Book Rating : 4.:/5 (15 download)

DOWNLOAD NOW!


Book Synopsis Spawning Distribution and Run Timing of Copper River Sockeye Salmon, 2008 Annual Report by : Keith M. van den Broek

Download or read book Spawning Distribution and Run Timing of Copper River Sockeye Salmon, 2008 Annual Report written by Keith M. van den Broek and published by . This book was released on 2009 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spawning distribution and run timing of adult sockeye salmon were assessed in the Copper River, Alaska, using radiotelemetry techniques. The purposes were to estimate the proportions of sockeye salmon returning to major spawning areas of the Copper River (Lower Copper, Chitina, Tonsina, Klutina, Tazlina, Gulkana, and Upper Copper rivers) and to describe the stock-specific, migratory timing profiles of sockeye salmon in the Copper River at the point of capture in Baird Canyon.

Factors Influencing Chinook Salmon Spawning Distribution in the Togiak River, Alaska

Download Factors Influencing Chinook Salmon Spawning Distribution in the Togiak River, Alaska PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 148 pages
Book Rating : 4.:/5 (17 download)

DOWNLOAD NOW!


Book Synopsis Factors Influencing Chinook Salmon Spawning Distribution in the Togiak River, Alaska by : Stephanie L. Meggers

Download or read book Factors Influencing Chinook Salmon Spawning Distribution in the Togiak River, Alaska written by Stephanie L. Meggers and published by . This book was released on 2018 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: Salmonids are heavily dependent on specific habitat characteristics for survival, yet few studies in Alaska have examined the relationship between habitat and spawning distribution, using remote sensing approaches. To better understand the relationship between Chinook Salmon Oncorhynchus tshawytscha spawning distribution and environmental variables like habitat type (e.g., run, riffle, pool), temperature, and proximity to channel islands, optical and thermal imagery were collected on the Togiak and Ongivinuk rivers in southwest Alaska. Object-based image analysis was used to classify and quantify habitat types, while thermal characteristics and the proximity of spawning locations to channel islands were determined in a GIS framework. Object-based image analysis was useful for classifying habitat and may provide a better alternative to pixel-based image analysis. However, rule sets were nontransferable and inconsistent among river reaches, and caution should be taken when these methods are used on large river sections. Chinook Salmon showed a preference for spawning in river runs, 80% of fish spawned in water temperatures between 8.6° and 9.4°C, and nearly 61% of Chinook Salmon spawned within 100 m of a channel island. This study provided a baseline understanding of environmental correlates of spawning for Chinook Salmon at the northern extent of their range.

Chinook Salmon Escapement and Run Timing in the Gulkana River, 2019-2021

Download Chinook Salmon Escapement and Run Timing in the Gulkana River, 2019-2021 PDF Online Free

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

DOWNLOAD NOW!


Book Synopsis Chinook Salmon Escapement and Run Timing in the Gulkana River, 2019-2021 by : Tracy R. Hansen

Download or read book Chinook Salmon Escapement and Run Timing in the Gulkana River, 2019-2021 written by Tracy R. Hansen and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Counting tower techniques were used to estimate Chinook salmon Oncorhynchus tshawytscha escapement in the Gulkana River during 2019, 2020, and 2021. The counting tower was located on the mainstem Gulkana River about 3.25 river kilometers upstream of the West Fork Gulkana River confluence. The estimated escapement of Chinook salmon was 8,400 (SE = 436; 95% CI = 7,546–9,254) in 2019, 2,504 (SE = 216; 95% CI = 2,080–2,928) in 2020, and 3,402 (SE = 273; 95% CI = 2,867–3,937) in 2021. These numbers do not represent total inriver escapement, just escapement above the counting tower site. The 2019 estimated escapement of Chinook salmon was the highest on record since the inception of the project in 2002, whereas the 2020 and 2021 estimated escapements were below the average for the years 2002–2018. The dates of the 25th, 50th, and 75th percentile of cumulative passage of Chinook salmon past the Gulkana River counting tower have been getting later since the project’s inception in 2002. The estimated escapement of sockeye salmon O. nerka during the counting tower’s operational period was 20,850 (SE = 661; 95% CI = 19,555–22,145) in 2019, 13,500 (SE = 574; 95% CI = 12,375–14,625) in 2020, and 13,924 (SE = 711; 95% CI = 12,531–15,317) in 2021. Counting tower operations were extended during 2019–2021 to enumerate more of the sockeye salmon return.

Migratory Timing and Distribution of Kenai River Chinook Salmon, 2010-2013

Download Migratory Timing and Distribution of Kenai River Chinook Salmon, 2010-2013 PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 68 pages
Book Rating : 4.:/5 (897 download)

DOWNLOAD NOW!


Book Synopsis Migratory Timing and Distribution of Kenai River Chinook Salmon, 2010-2013 by : Adam M. Reimer

Download or read book Migratory Timing and Distribution of Kenai River Chinook Salmon, 2010-2013 written by Adam M. Reimer and published by . This book was released on 2013 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: The migratory timing and distribution of Kenai River chinook salmon was examined using radio telemetry for early-run and late-run chinook salmon during the 2010-2013 seasons.

Inriver Abundance, Spawning Distribution, and Run Timing of Copper River Chinook Salmon in 2002

Download Inriver Abundance, Spawning Distribution, and Run Timing of Copper River Chinook Salmon in 2002 PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 38 pages
Book Rating : 4.:/5 (532 download)

DOWNLOAD NOW!


Book Synopsis Inriver Abundance, Spawning Distribution, and Run Timing of Copper River Chinook Salmon in 2002 by : James William Savereide

Download or read book Inriver Abundance, Spawning Distribution, and Run Timing of Copper River Chinook Salmon in 2002 written by James William Savereide and published by . This book was released on 2003 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Inriver Abundance, Spawning Distribution, and Run Timing of Copper River Chinook Salmon, 2002-2004

Download Inriver Abundance, Spawning Distribution, and Run Timing of Copper River Chinook Salmon, 2002-2004 PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 44 pages
Book Rating : 4.:/5 (622 download)

DOWNLOAD NOW!


Book Synopsis Inriver Abundance, Spawning Distribution, and Run Timing of Copper River Chinook Salmon, 2002-2004 by : James William Savereide

Download or read book Inriver Abundance, Spawning Distribution, and Run Timing of Copper River Chinook Salmon, 2002-2004 written by James William Savereide and published by . This book was released on 2005 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Temporal and Spatial Distribution of Fall Chinook Salmon Spawning in Elk River

Download Temporal and Spatial Distribution of Fall Chinook Salmon Spawning in Elk River PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 28 pages
Book Rating : 4.:/5 (689 download)

DOWNLOAD NOW!


Book Synopsis Temporal and Spatial Distribution of Fall Chinook Salmon Spawning in Elk River by : Wayne A. Burck

Download or read book Temporal and Spatial Distribution of Fall Chinook Salmon Spawning in Elk River written by Wayne A. Burck and published by . This book was released on 1978 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: