Estimation of Karluk Lake Early and Late Run Sockeye Returns Based on Scale Age Data, 1985-1994 PDF Download
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Author: Bruce M. Barrett
Publisher:
ISBN:
Category : Escapement (Fisheries)
Languages : en
Pages : 46
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Book Description
A natural age marker was used to estimate the number-by-age class of Karluk bound sockeye salmon harvested in the westside Kodiak commercial fishery from Raspberry Cape south to Sturgeon Head for 1985 through 1994. Early and late run numbers are estimated separately.
Author: Bruce M. Barrett
Publisher:
ISBN:
Category : Escapement (Fisheries)
Languages : en
Pages : 46
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Book Description
A natural age marker was used to estimate the number-by-age class of Karluk bound sockeye salmon harvested in the westside Kodiak commercial fishery from Raspberry Cape south to Sturgeon Head for 1985 through 1994. Early and late run numbers are estimated separately.
Author: Richard Gard
Publisher:
ISBN:
Category : Sockeye salmon
Languages : en
Pages : 428
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Book Description
Author: Michael L. Dahlberg
Publisher:
ISBN:
Category : Salmon fisheries
Languages : en
Pages : 24
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Book Description
Author: M. Birch Foster
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 39
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Book Description
Karluk Lake is located on the southwest side of Kodiak Island and supports the largest sockeye salmon (Oncorhynchus nerka) run in the Kodiak Management Area. Sockeye salmon smolt studies have been conducted sporadically on Karluk Lake since the 1920s. This project reinstituted a Karluk Lake sockeye salmon smolt program to estimate the size and condition of outmigrating smolt; in addition, individual smolt were collected on an annual basis for stable isotope analysis. Sockeye salmon smolt outmigrating from Karluk Lake were sampled for size and condition from 2011 to 2013. Annually, a total of three strata samples (early, middle, late), with a goal of 280 fish per stratum, were collected and used to quantify the average length, weight, and condition of the outmigration. Whole fish samples were frozen for isotope analysis. Modeling experiments using body size as a parameter in a total adult run forecasting were conducted. Results demonstrated no statistically significant differences in body size estimates between strata within years; however, 2013 body size was significantly larger than 2011 and 2012 and the largest recorded in the history of the project time series. Isotope analysis yielded variable results over years but, overall, demonstrated isotopic signatures differing between systems, years, outmigration timing, and size. The forecast model performed well, albeit under a limited range of climate variability as well as fairly robust escapements, but it is potentially suitable for forecasting future salmon returns.
Author: Heather Finkle
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 72
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Book Description
The 2014 Karluk Sockeye Salmon Smolt Enumeration project marked the third consecutive year of documenting the smolt outmigration from Karluk Lake since 2006. This report provides the daily and cumulative smolt outmigration estimates as well as biometric, age, and genetic stock composition information. Limnological data collected from Karluk Lake by the Kodiak Regional Aquaculture Association are also presented. The abundance of sockeye salmon smolt was estimated using a Canadian fan trap and mark-recapture techniques. In 2014, a total of 811,255 sockeye salmon smolt were estimated to pass downstream of the trap between May 13 and July 2. The majority of smolt sampled were freshwater-age-2 fish (70%), and average length and weight of each age class were some of the largest in the historical data series. The majority (78%) of outmigrating smolt belonged to the late-run stock, which were mostly freshwater-age-2 fish. The average weighted zooplankton biomass of 2,687 mg/m2 in 2014 suggests juvenile sockeye salmon in Karluk Lake reared in a healthy nursery environment prior to their outmigration.
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Author: N. D. Schubert
Publisher: New Westminster, B.C. : Fisheries and Oceans Canada
ISBN:
Category : Fish populations British Columbia Stuart River System
Languages : en
Pages : 66
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Book Description
Author: Douglas B. Molyneaux
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 5
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Book Description
At the height of production in the early part of the century, Karluk was probably the best North American producer of sockeye salmon for its size. Early catch and escapement figures are, however, sometimes unreliable and/or missing. Because of Karluk's former high importance in sockeye salmon production, the cause for the decline has been the subject of extensive studies by various agencies over the years. There has been much disagreement as to the solution for bringing the run back to a reasonable production level because of the complexity of the run and the lack of knowledge of many aspects of it. This report outlines the history of Karluk River sockeye salmon, the current management strategy, and the Karluk weir escapement goals.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: B. P. Fanos
Publisher:
ISBN:
Category : Fish populations
Languages : en
Pages : 66
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Book Description
Author: N. D. Schubert
Publisher:
ISBN:
Category : Fish populations
Languages : en
Pages : 0
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Book Description
