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File Size: 130 KB

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HTTP url: https://app.streamnet.org/files/794/794.zip


Lower Granite Fall Chinook Prey Data (2019-2021)


Data Categories Diet, zooplankton, invertebrate drift
Dates of Data 2019 TO 2020
Data Set Status Complete
Data Set Update Schedule Annually
Date Data Set Published on StreamNet Data Store 04-19-2022
Project Name & Number 1991-029-00
Purpose of Data Set These data were collected to better understand the diets of juvenile fall Chinook salmon that potentially delay their migration in Lower Granite Reservoir and become holdovers. In addition, we sought to better understand the prey resources that these fish use during summer when they are pelagically oriented in the reservoir.
Summary / Abstract In 2019 and 2020, data were collected on juvenile fall chinook salmon diets and prey in Lower Granite Reservoir during summer. Prey data include zooplankton and surface drift invertebrates.
Broad Biological Groups Fishes, Invertebrates
Taxa Chinook salmon Oncorhynchus tshawytscha (Walbaum, 1792)
Insects Insecta
Mixed invertebrates
Location Lower Granite Reservoir, Snake River
NPCC Subbasins (2001 Subbasins) Columbia Plateau: Snake lower
Hatcheries
Dams
Keywords Diet, Chinook salmon, zooplankton, invertebrates, Lower Granite Reservoir, Snake River
Lead Person and Organization That Created the Data Set US Geological Survey (USGS)
Other Participating Organizations Funding provided by Bonneville Power Administration
Contact Person for Questions About the Data Name:  Ken Tiffan
Position:  
Organization:  U.S. Geological Survey
Address:  5501A Cook-Underwood Rd.
Cook, WA  98605
USA
Phone:  509-538-2972
email:  ktiffan@usgs.gov
Broad Category of Methods Field and Lab
Data Collection Methods Angling, zooplankton nets, drift nets
File Formats Microsoft Excel 2000 or later
Data structure description There are six main tabs in the spreadsheet and a "Readme" tab that explains all the column names in each sheet. The "lavage Field" contains all the information pertinent to the collection of fall chinook salmon diets. The "Lavage Lab" contains all the taxa, numbers, and weights of prey found in Chinook salmon diets. The "Zoo Field" sheet contains information related to the field collection of zooplankton samples. The "Zoo Lab" sheet contains all the analyzed data from the zooplankton samples. The "Drift Field" sheet contains all the data related to collection of drift samples in the field. The "Drift Lab" sheet contains all the analyzed drift data.
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File Size: 130 KB