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Smallmouth Bass diet data in Lower Granite Reservoir, 2012-2015
|Dates of Data
||2012 TO 2015
|Data Set Status
|Data Set Update Schedule
|Date Data Set Published on StreamNet Data Store
|Project Name & Number
|Purpose of Data Set
||This contains diet data obtained from smallmouth bass collected in Hells Canyon and Lower Granite Reservoir as part of a study to estimate juvenile Snake River fall Chinook salmon loss to predation
|Summary / Abstract
||This data set contains the weights of different taxa consumed by smallmouth bass in Lower Granite Reservoir and Hells Canyon on the Snake River.
|Broad Biological Groups
||Banded killifish Fundulus diaphanus (Lesueur, 1817)
Bluegill Lepomis macrochirus Rafinesque, 1819
Channel catfish Ictalurus punctatus (Rafinesque, 1818)
Chinook salmon Oncorhynchus tshawytscha (Walbaum, 1792)
Chiselmouth Acrocheilus alutaceus Agassiz and Pickering, 1855
Largescale sucker Catostomus macrocheilus Girard, 1856
Mountain whitefish Prosopium williamsoni (Girard, 1856)
Northern pikeminnow Ptychocheilus oregonensis (Richardson, 1836)
Peamouth Mylocheilus caurinus (Richardson, 1836)
Sand roller Percopsis transmontana (Eigenmann and Eigenmann, 1892)
Smallmouth bass Micropterus dolomieu Lacepède, 1802
Steelhead Oncorhynchus mykiss (Walbaum, 1792)
Pumpkinseed Lepomis gibbosus (Linnaeus, 1758)
Signal crayfish Pacifastacus leniusculus (Dana, 1852)
Opossum shrimp Neomysis mercedis (Holmes, 1987)
||Mainstem Snake River from Port of Wilma (river mile 133 to Sheep Creek Rapid (RM 229) in Hells Canyon and from RM 0 to RM 2.5 on the lower Clearwater River (Idaho).
|NPCC Subbasins (2001 Subbasins)
Columbia Plateau: Snake lower
Middle Snake: Snake lower middle
Mountain Snake: Clearwater
Middle Snake: Snake upper middle
Fall Chinook salmon
Lower Granite Reservoir
|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
Organization: U.S. Geological Survey
Address: 5501A Cook-Underwood Rd.
Phone: 509-538-2299 x279
|Broad Category of Methods
|Data Collection Methods
||Angling and electrofishing were used to collect fish in the field. Smallmouth bass stomach contents were identified to major taxomonic group: insects, crustaceans, fish, and other. Fish species and length at ingestion were identified from diagnostic bones and associated regressions (Hansel et al. 1988; Rogers and Burley 1991; Rieman et al. 1991; Vigg et al. 1991; Parrish et al. 2006). Consumption of different prey taxa was expressed as percent frequency of occurrence and percent weight on a seasonal basis.
||Microsoft Excel 2000 or later.
|Data structure description
||This is the companion data set to the smallmouth bass catch data. Both data sets are linked by the "Sample" number. It is important to read the "Read me" tab where you will find the definitions of all the column names.
|URL where updated data may be available
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