Author: David B. IrvingPublisher:
ISBN:
Category : Escapement (Fisheries)
Languages : en
Pages : 110
Book Description
Provides results of a three year study to test the feasbility of using sonar in the Togiak River to estimate salmon escapements.
Salmon Escapement Estimates Into Togiak River Using Sonar, Togiak National Wildlife Refuge, Alaska, 1987, 1988, and 1990
Author: David B. IrvingPublisher:
ISBN:
Category : Escapement (Fisheries)
Languages : en
Pages : 110
Book Description
Provides results of a three year study to test the feasbility of using sonar in the Togiak River to estimate salmon escapements.
Side-scan Sonar Estimation of Salmon Escapements Into Togiak River, Togiak National Wildlife Refuge, Alaska
Author: James E. FinnPublisher:
ISBN:
Category : Escapement (Fisheries)
Languages : en
Pages : 64
Book Description
Feasibility of Using Video Technology to Estimate Salmon Escapement in the Ongivinuk River, a Clear-water Tributary of the Togiak River
Author: Nicholas J. HetrickPublisher:
ISBN:
Category : Escapement (Fisheries)
Languages : en
Pages : 47
Book Description
Review of Salmon Escapement Goals in Bristol Bay, Alaska, 2006
Author: Timothy T. BakerPublisher:
ISBN:
Category : Escapement (Fisheries)
Languages : en
Pages : 110
Book Description
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.
Age Distribution of Chinook Salmon Escapement Samples, Togiak National Wildlife Refuge, Alaska, 1992-1996
Author: Rob MacDonaldPublisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 17
Book Description
Abundance and Run Timing of Chinook, Chum, Coho, Pink and Sockeye Salmon in the Kulukak River, Togiak National Wildlife Refuge, Alaska, 1994-1996
Author: Mary A. PricePublisher:
ISBN:
Category : Escapement (Fisheries)
Languages : en
Pages : 54
Book Description
"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.
Estimation of Late Run Sockeye and Coho Salmon Escapement in the Clark River, a Tributary to Chignik Lake, Alaska Peninsula National Wildlife Refuge, 2002
Author: Jeffry L. AndersonPublisher:
ISBN:
Category : Coho salmon
Languages : en
Pages : 36
Book Description
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.
The Estimation of Daily Escapement and Total Abundance from Catch Per Unit Effort of the Sockeye Salmon Fishery in Togiak Bay, Alaska
Author: Linda Karen BrannianPublisher:
ISBN:
Category : Escapement (Fisheries)
Languages : en
Pages : 129
Book Description
Sonar Enumeration of Pacific Salmon Escapement Into the Nushagak River, Bristol Bay, Alaska, 2010-2012
Author: Gregory B. BuckPublisher:
ISBN:
Category : Escapement (Fisheries)
Languages : en
Pages : 73
Book Description
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.
Wenatchee River Salmon Escapement Estimates Using Video Tape Technology in 1990
Author: Douglas R. HatchPublisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 58
Book Description
