Inriver Abundance and Distribution of Spawning Susitna River Sockeye Salmon Oncorhynchus Nerka, 2007 PDF Download
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Author: Richard Yanusz
Publisher:
ISBN:
Category : Escapement (Fisheries)
Languages : en
Pages : 44
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Book Description
Estimates of sockeye salmon Oncorhynchus nerka escapement to the Susitna River were determined via a capture-recapture experiment, which was conducted using radio tags, fish wheels, and weirs in 2007.
Author: Richard Yanusz
Publisher:
ISBN:
Category : Escapement (Fisheries)
Languages : en
Pages : 44
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Book Description
Estimates of sockeye salmon Oncorhynchus nerka escapement to the Susitna River were determined via a capture-recapture experiment, which was conducted using radio tags, fish wheels, and weirs in 2007.
Author: Richard Yanusz
Publisher:
ISBN:
Category : Escapement (Fisheries)
Languages : en
Pages : 38
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Book Description
Estimates of sockeye salmon Oncorhynchus nerka escapement to the Susitna River drainage were determined via a capture-recapture experiment, which was conducted using radio tags, fish wheels, and weirs in 2008.
Author: Richard Yanusz
Publisher:
ISBN:
Category : Escapement (Fisheries)
Languages : en
Pages : 60
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Book Description
Author: T. Mark Willette
Publisher:
ISBN:
Category : Escapement (Fisheries)
Languages : en
Pages : 56
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Book Description
Estimates of sockeye salmon Oncorhynchus nerka escapement to the Kenai River were determined using mark-recapture methods. Radiotelemetry was used to determine the distribution of sockeye salmon spawners within the Kenai River watershed and estimate the migratory timing of major spawning stocks and the migration rates of scokeye salmon in the Kenai River in 2006-2008.
Author: Robert J. Ellis
Publisher: Forgotten Books
ISBN: 9781333895938
Category : Business & Economics
Languages : en
Pages : 70
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Book Description
Excerpt from Distribution, Abundance, and Growth of Juvenile Sockeye Salmon, Oncorhynchus Nerka, and Associated Species in the Naknek River System, 1961-64 In the summers of 1961 to 1963, juvenile sockeye salmon in the pelagic areas had a characteristic pattern of abundance. For the entire system: abundance (catch per tow) of age 0 increased from early summer to midsummer and then declined to late August. The abundance in late August varied about threefold and, in general, was independent of variations in the number of parents from 1960 to 1963. In July the abundance of age 0 fish in each basin was proportional to the amount of known contiguous spawning ground, but by late August this relation no longer existed. This change was at least partly due to migration of the age 0 fish - generally from basins of greater abundance of fish to those of lesser abun dance. The larger and faster growing fish were the first to migrate. Not all basins were involved in these migrations. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author: Richard J. Yanusz
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 31
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Book Description
Between 2012 and 2014, information was collected on the distributions and abundances of adult Chinook (Oncorhynchus tshawytscha) and coho (O. kisutch) salmon as part of the Susitna-Watana Hydro studies conducted by the Alaska Department of Fish and Game in partnership with LGL Alaska Research Associates Inc. and the Alaska Energy Authority. Spawning distributions were assessed using radiotelemetry for Chinook salmon in the mainstem Susitna River in 2012-2014 and in the Yentna River in 2013 and 2014, and for coho salmon in the mainstem Susitna River in 2013 and 2014 only. Inriver abundances for both species were estimated using mark-recapture techniques in 2013 and 2014 for the mainstem Susitna River and for Chinook salmon in the Yentna River in 2014. For Chinook salmon, these abundance estimates were combined with telemetry data to estimate individual management unit-specific abundances which were then used to calculate the percent contribution of each to total abundance. In both 2013 and 2014, all units but unit 3 (upper Susitna River) contributed nearly equally (21-27%) to the total mainstem Susitna River Chinook salmon inriver run. When the Yentna River estimate was included with estimates for the other management units in 2014, the Yentna River contributed 25% to the drainagewide inriver run; units 1, 2, 5, and 6 contributed 15-19% each; and unit 3 contributed 7%. Sport harvest was subtracted from the mark-recapture inriver abundance to estimate escapement which was then compared to aerial indexes and weir counts. For Chinook salmon, index and weir counts counted 34-39% of the escapement on the mainstem Susitna River and 36% on the Yentna River. For coho salmon, the Deshka River weir counted 19% and 16% of the Sustina River escapements in 2013 and 2014, respectively. Foot counts of coho salmon escapement for 4 streams on the mainstem Susitna River accounted for an average of 0.9% of the escapement over 2013-2014.
Author: Kristin Courtney
Publisher:
ISBN:
Category : Fish stock assessment
Languages : en
Pages : 0
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Book Description
The 2022 forecast of Stikine River sockeye salmon, Oncorhynchus nerka, run abundance is poor and we anticipate very little harvest opportunity for either U.S. or Canadian fisheries. Since 1994, we have almost exclusively relied on the Canadian lower river commercial fishery to provide the stock-specific information that is used to complete the mixed stock run reconstruction for Stikine River sockeye salmon. It is highly likely there will be little commercial fishing opportunity in 2022 to gather this pertinent information. To obtain stock composition data necessary to estimate the inriver abundance, we will continue to conduct a sockeye salmon stock assessment program at Kakwan Point that began in 2021. The project will be conducted in conjunction with the existing Stikine River Chinook salmon, O. tshwaytscha, stock assessment program, and will extend the project through the end of the sockeye salmon run in mid-August. Tissue samples will be collected from sockeye salmon for genetic mixed stock analysis and for use in a genetic mark–recapture study to estimate inriver abundance based on an expansion of the Tahltan stock that is monitored via weir. We will also gather daily CPUE information, capture and spaghetti tag sockeye salmon, and estimate the age, sex, and length composition for sockeye salmon captured at Kakwan Point.
Author: Peter Mallon Cleary
Publisher:
ISBN:
Category : Chum salmon
Languages : en
Pages : 44
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Book Description
Author: Donovan R. Craddock
Publisher:
ISBN:
Category : Salmon
Languages : en
Pages : 16
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Book Description
Author: Robert J. Ellis
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 0
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Book Description
