Download or read book Salmon Escapement Estimates Into Togiak River Using Sonar Togiak National Wildlife Refuge Alaska 1987 1988 and 1990 written by David B. Irving and published by . This book was released on 1995 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides results of a three year study to test the feasbility of using sonar in the Togiak River to estimate salmon escapements.
Download or read book Side scan Sonar Estimation of Salmon Escapements Into Togiak River Togiak National Wildlife Refuge Alaska written by James E. Finn and published by . This book was released on 1990 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Feasibility of Using Video Technology to Estimate Salmon Escapement in the Ongivinuk River a Clear water Tributary of the Togiak River written by Nicholas J. Hetrick and published by . This book was released on 2004 with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Review of Salmon Escapement Goals in Bristol Bay Alaska 2006 written by Timothy T. Baker and published by . This book was released on 2006 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report contains recommendations after the Alaska Department of Fish and Game Escapement Goal Review Committee reviewed Pacific salmon, Oncorhynchus spp., escapement goals for the major river systems in Bristol Bay. Spawner-return data were evaluated for: sockeye salmon, O. nerka, in the Ugashik, Egegik, Kvichak, Naknek, Alagnak, Wood, Nushagak, Igushik, Togiak, and Kulukak Rivers; chinook salmon, O. tshawytscha, in the Nushagak, Togiak, Alagnak, Naknek, and Egegik Rivers; chum salmon, O. keta, in the Nushagak River; coho salmon, O. kisutch, in the Togiak, Nushagak, and Kulukak Rivers; and pink salmon, O. gorbuscha, in the Nushagak River.
Download or read book Age Distribution of Chinook Salmon Escapement Samples Togiak National Wildlife Refuge Alaska 1992 1996 written by Rob MacDonald and published by . This book was released on 1997 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Abundance and Run Timing of Chinook Chum Coho Pink and Sockeye Salmon in the Kulukak River Togiak National Wildlife Refuge Alaska 1994 1996 written by Mary A. Price and published by . This book was released on 1999 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: "A counting tower was used to estimate escapement and run timing of five species of salmon into the Kulukak River on Togiak National Wildlife Refuge from 1994-1996"--Page 1.
Download or read book Estimation of Adult Sockeye Salmon Escapement Into Little River Lake Using a Flexible Picket Weir and a Remote Video Recorder Kodiak National Wildlife Refuge Alaska 2001 2003 written by Kenneth S. Gates and published by . This book was released on 2004 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Estimation of Late Run Sockeye and Coho Salmon Escapement in the Clark River a Tributary to Chignik Lake Alaska Peninsula National Wildlife Refuge 2002 written by Jeffry L. Anderson and published by . This book was released on 2003 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: In response to concerns expressed by subsistence fishers that the late run has declined in the Chignik Lake region, late run sockeye and coho salmon in the Clark River was estimated using stream walking surveys and Clark River sockeye salmon pass the Chignik weir (at the outlet of Chignik Lake) were studied using radio transmitters to estimate escapement and to determine run timing.
Download or read book The Estimation of Daily Escapement and Total Abundance from Catch Per Unit Effort of the Sockeye Salmon Fishery in Togiak Bay Alaska written by Linda Karen Brannian and published by . This book was released on 1982 with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sonar Enumeration of Pacific Salmon Escapement Into the Nushagak River Bristol Bay Alaska 2010 2012 written by Gregory B. Buck and published by . This book was released on 2019 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydroacoustic techniques were used to develop escapement estimates of sockeye (Oncorhynchus nerka), Chinook (O. tshawytscha), and chum (O. keta) salmon for the Nushagak River in Bristol Bay, Alaska during 2010?2012. Coho (O. kisutch) and pink salmon (O. gorbuscha) salmon escapements were estimated in 2012. A standard range dual-frequency identification sonar (DIDSON) was used to estimate salmon escapement on the left (south) bank, and a long range DIDSON was used to estimate salmon escapement on the right (north) bank. Estimates of species composition, age, sex, and size composition were derived from samples obtained using drift gillnets at the sonar site. Final escapement estimates for sockeye salmon were 468,696 (2010), 428,191 (2011), and 432,438 (2012). Final escapement estimates for chum salmon were 273,914 (2010), 248,278 (2011), and 395,165 (2012). Final escapement estimates for Chinook salmon were 60,185 (2010), 108,278 (2011), and 174,085 (2012). Coho and pink salmon escapements were 329,946 and 1,214,960 in 2012. The major age class estimated for sockeye salmon was age 1.3, which ranged from 65% to 93% of the escapement in 2010-2012. The major age class for Chinook salmon was age 1.3, which ranged from 40% to 53% of the escapement in 2010-2012. The major age class for chum salmon was age 0.3, which ranged from 54% to 65% of the escapement in 2010-2012.
Download or read book Wenatchee River Salmon Escapement Estimates Using Video Tape Technology in 1990 written by Douglas R. Hatch and published by . This book was released on 1991 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Operational Plan written by Greg Buck and published by . This book was released on 2013 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Alaska Department of Fish and Game, Division of Commercial Fisheries, monitors annual escapements of salmon returning to the Nushagak River system near Dillingham, Alaska. Hydroacoustic techniques, dual frequency identification sonar (DIDSON), are used to develop escapement estimates of sockeye Oncorhynchus nerka, Chinook O. Tshawytscha, chum O. keta, coho O. kisutch, and pink O. gorbuscha salmon into the Nushagak River. Sonar passage estimates are used for inseason management of commercial fisheries in the Nushagak District. Estimates of species composition, age, sex, and length, are derived from samples obtained with drift gillnets. This report provides operational guidelines for the Nushagak River sonar project, estimation of salmon escapement, and sampling procedures, as well as general camp policies.
Download or read book Sonar Enumeration of Pacific Salmon Escapement Into the Nushagak River 2003 written by Charles E. Brazil and published by . This book was released on 2007 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt: Estimates of Pacific salmon escapement for the Nushagak River in Bristol Bay, Alaska, were determined via hydroacoustic techniques. Estimates of species, age, sex and size composition were derived from samples obtained with drift gillnets.
Download or read book Sonar Enumeration of Pacific Salmon Escapement Into the Nushagak River 2008 written by Gregory B. Buck and published by . This book was released on 2013 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt: Estimates of Pacific salmon escapement for the Nushagak River in Bristol Bay, Alaska, were determined via hydroacoustic techniques from June 6 through July 18, 2008. Estimates of species composition, age, sex and size composition were derived from samples obtained with drift gillnets and a beach seine at the sonar site.
Download or read book Sonar Enumeration of Pacific Salmon Escapement Into the Nushagak River 2007 written by Gregory B. Buck and published by . This book was released on 2013 with total page 79 pages. Available in PDF, EPUB and Kindle. Book excerpt: Estimates of Pacific salmon escapement for the Nushagak River in Bristol Bay, Alaska, were determined via hydroacoustic techniques from June 4 through July 19, 2007. Estimates of species composition, age, sex and size composition were derived from samples obtained with drift gillnets and a beach seine at the sonar site.
Download or read book Sonar Enumeration of Pacific Salmon Escapement Into the Nushagak River 2004 written by Charles E. Brazil and published by . This book was released on 2008 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: Estimates of Pacific salmon escapement for the Nushagak River in Bristol Bay, Alaska, were determined via hydroacoustic techniques. Estimates of species, age, sex and size composition were derived from samples obtained with drift gillnets at the sonar site.
Download or read book Sonar Enumeration of Pacific Salmon Escapement Into the Nushagak River 2006 written by Charles E. Brazil and published by . This book was released on 2011 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: Estimates of Pacific salmon escapement for the Nushagak River in Bristol Bay, Alaska, were determined via hydroacoustic techniques from June 8 through July 17, 2006. Estimates of species composition, age, sex and size composition were derived from samples obtained with drift gillnets at the sonar site.
