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Book Spawning Distribution and Run Timing of Copper River Sockeye Salmon

Download or read book Spawning Distribution and Run Timing of Copper River Sockeye Salmon written by Jason J. Smith and published by . This book was released on 2006 with total page 55 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Specific objectives were to: (1) estimate the proportions of sockeye salmon returning to major spawning areas of the Copper River (Lower Copper, Chitina, Tonsina, Klutina, Tazlina, Gulkana, nad Upper Copper rivers) ... ; and (2) describe the stock-specific, migratory timing profile of sockeye salmon in the Copper River at the point of capture in Baird Canyon"--P. viii.

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

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.

Book Operational Plan Amendment

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.

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

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.

Book Gulkana River Chinook Salmon Spawning Distribution and Run Timing 2013 2015

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.

Book Estimation of Late Run Sockeye Salmon Spawning Distribution in the Chignik River Watershed 2004

Download or read book Estimation of Late Run Sockeye Salmon Spawning Distribution in the Chignik River Watershed 2004 written by Jeffry L. Anderson and published by . This book was released on 2005 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: Radio telemetry was used to determine the spawning distribution of sockeye salmon that passed the Chignik weir in Aug. and early Sept. 2004 in response to concerns expressed by subsistence fishers that the late run has declined.

Book Run Timing and Spawning Distribution of Coho Salmon Oncorhynchus Kisutch in the Kenai River Alaska and Their Relation to Harvest Strategies

Download or read book Run Timing and Spawning Distribution of Coho Salmon Oncorhynchus Kisutch in the Kenai River Alaska and Their Relation to Harvest Strategies written by Jeffrey Allan Booth and published by . This book was released on 1990 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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

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:

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

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:

Book Spawning Distribution of Coho Salmon in the Upper Copper River Drainage 2005

Download or read book Spawning Distribution of Coho Salmon in the Upper Copper River Drainage 2005 written by James William Savereide and published by . This book was released on 2007 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report discusses the results of the 2005 radiotelemetry methods which were used to determine the majority of spawning locations of coho salmon, Oncorhynchus kisutch, in the Upper Copper River, Alaska.

Book Migratory Timing of Upper Copper River Sockeye Salmon Oncorhynchus Nerka Stocks and Its Management Implications to the Commercial Fishery

Download or read book Migratory Timing of Upper Copper River Sockeye Salmon Oncorhynchus Nerka Stocks and Its Management Implications to the Commercial Fishery written by Margaret Faye Merritt and published by . This book was released on 1983 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Recommended Spawning Flows for Cedar River Sockeye Salmon

Download or read book Recommended Spawning Flows for Cedar River Sockeye Salmon written by Jim Ames (Fisheries biologist) and published by . This book was released on 1995 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: