Survival Estimates for the Passage of Juvenile Chinook Salmon Through Snake River Dams and Reservoirs, 1997 PDF Download
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Author: Eric Hockersmith
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 120
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Book Description
Author: Eric Hockersmith
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 120
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Author: Otzar hahochma
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Category :
Languages : en
Pages :
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Author:
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Category :
Languages : en
Pages : 130
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Author:
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Category :
Languages : en
Pages : 154
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A pilot study was conducted to estimate survival of hatchery-reared yearling chinook salmon through dams and reservoirs on the Snake River. The goals of the study were to: (1) field test and evaluate the Single-Release, Modified-Single-Release, and Paired-Release Models for the estimation of survival probabilities through sections of a river and hydroelectric projects; (2) identify operational and logistical constraints to the execution of these models; and (3) determine the usefulness of the models in providing estimates of survival probabilities. Field testing indicated that the numbers of hatchery-reared yearling chinook salmon needed for accurate survival estimates could be collected at different areas with available gear and methods. For the primary evaluation, seven replicates of 830 to 1,442 hatchery-reared yearling chinook salmon were purse-seined from Lower Granite Reservoir, PIT tagged, and released near Nisqually John boat landing (River Kilometer 726). Secondary releases of PIT-tagged smolts were made at Lower Granite Dam to estimate survival of fish passing through turbines and after detection in the bypass system. Similar secondary releases were made at Little Goose Dam, but with additional releases through the spillway. Based on the success of the 1993 pilot study, the authors believe that the Single-Release and Paired-Release Models will provide accurate estimates of juvenile salmonid passage survival for individual river sections, reservoirs, and hydroelectric projects in the Columbia and Snake Rivers.
Author:
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ISBN:
Category : Chinook salmon
Languages : en
Pages : 140
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Author: Steven Glen Smith
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Category : Chinook salmon
Languages : en
Pages : 160
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Author:
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Category :
Languages : en
Pages : 165
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Documentation is provided for the third of a multiyear study to estimate the survival of juvenile salmonids passing through dams and reservoirs on the Snake River.
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Languages : en
Pages :
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Author:
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ISBN:
Category : Chinook salmon
Languages : en
Pages : 900
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Author:
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Category :
Languages : en
Pages : 88
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This report provides reach survival and travel time estimates for PIT-tagged hatchery and wild juvenile steelhead and yearling chinook salmon in the Snake and Columbia Rivers during 1998. Estimates of post-detection bypass survival for yearling chinook salmon at McNary Dam are also reported. Results are reported primarily in the form of data tables and figures with minimal description of methods and analysis. Detailed information on the methodology and statistical models used for this report is provided in five previous annual reports on this study, which are cited here.
