Kenneth Tiffan
Snake River fall Chinook salmon were listed as “threatened” under the ESA in 1992. My entire career has focused conducting applied research to provide information that would increase our understanding of this unique stock and facilitate recovery efforts.
The work of myself and colleagues from other agencies have produced most of the contemporary information on Snake River fall Chinook salmon.
Research Interests:
The main focus of my work is understanding Snake River fall Chinook salmon life history and ecology to support recovery of this listed stock. Over the years research topics have included migratory behavior, habitat use and quantification, physiology, and feeding ecology of juvenile fish in the Snake and Columbia rivers. Other research areas have included understanding the effects of elevated flows on chum salmon spawning behavior, and investigating recent food web changes to lower Snake River reservoirs.
Professional Experience
1992 to Present – Research Fish Biologist, U.S. Geological Survey, Western Fisheries Research Center, Columbia River Research Laboratory, Cook, WA
Education and Certifications
M.S. 1992. Fishery Biology, Colorado State University, Fort Collins, CO
B.S. 1987. Fishery Biology, Colorado State University, Fort Collins, CO
Science and Products
Thermal exposure of juvenile fall Chinook salmon migrating through Little Goose Reservoir. Annual report 1998
Osmoregulatory performance and migration behavior of subyearling Chinook salmon. Annual report 1995
Early life history and survival of natural subyearling fall chinook salmon in the Snake and Clearwater rivers in 1995
Behavior of juvenile fall Chinook salmon in the forebay of a lower Snake River reservoir. Annual report 1995
Nearshore movements of juvenile fall Chinook salmon in the Columbia River. Annual report 1995
Nearshore movement and feeding behaviors of juvenile fall Chinook salmon in the Columbia River. Annual report 1994
Osmoregulatory performance and markings of subyearling Chinook salmon at McNary Dam to estimate adult contribution
Nearshore habitat use by subyearling Chinook salmon and non-native piscivores in the Columbia River. Annual report 1994
Osmoregulatory performance and marking of subyearling Chinook salmon at McNary Dam to estimate adult contribution. Annual report 1993
Osmoregulatory performance and marking of subyearling Chinook salmon at McNary Dam to estimate adult contribution. Annual report 1993
Comparison of field and In Situ acoustic target strengths of juvenile fall Chinook salmon and american shad. Annual report 1993
Nearshore habitat use by subyearling Chinook salmon in the Columbia and Snake Rivers. Annual report 1993
Science and Products
- Science
- Data
- Multimedia
- Publications
Filter Total Items: 109
Thermal exposure of juvenile fall Chinook salmon migrating through Little Goose Reservoir. Annual report 1998
Abstract not availableAuthorsC. Haskell, D.A. Venditti, M. Tennier, J. KrautOsmoregulatory performance and migration behavior of subyearling Chinook salmon. Annual report 1995
No abstract availableAuthorsK.F. Tiffan, R.D. Garland, D.W. RondorfEarly life history and survival of natural subyearling fall chinook salmon in the Snake and Clearwater rivers in 1995
Snake River fall chinook salmon Oncorhynchustshawytscha have declined in abundance the last three decades and now managers are seeking methods to restore the population, Estimates of adult fish returning to the Snake River prior to 1957 number in the tens of thousands (Irving and Bjornn 1981), compared to a range of about 300-750 for 1991-1995 (Lavoy 1995). As a result, Snake River fall chinook saAuthorsWilliam P. Connor, Theodore C. Bjornn, Howard L. Burge, Aaron P. Garcia, Dennis W. RondorfBehavior of juvenile fall Chinook salmon in the forebay of a lower Snake River reservoir. Annual report 1995
No abstract availableAuthorsD.A. Venditti, J.M. Kraut, D.W. RondorfNearshore movements of juvenile fall Chinook salmon in the Columbia River. Annual report 1995
No abstract availableAuthorsD.A. Venditti, M.A. Tennier, D.W. RondorfNearshore movement and feeding behaviors of juvenile fall Chinook salmon in the Columbia River. Annual report 1994
No abstract availableAuthorsD.A. Venditti, R.D. GarlandOsmoregulatory performance and markings of subyearling Chinook salmon at McNary Dam to estimate adult contribution
No abstract availableAuthorsK.F. Tiffan, R.D. Garland, P.G. WagnerNearshore habitat use by subyearling Chinook salmon and non-native piscivores in the Columbia River. Annual report 1994
No abstract availableAuthorsL.O. Key, R.D. Garland, K.M. KappenmanOsmoregulatory performance and marking of subyearling Chinook salmon at McNary Dam to estimate adult contribution. Annual report 1993
No abstract availableAuthorsK.F. Tiffan, P.G. WagnerOsmoregulatory performance and marking of subyearling Chinook salmon at McNary Dam to estimate adult contribution. Annual report 1993
No abstract availableAuthorsK.F. Tiffan, D.W. Rondorf, P.G. WagnerComparison of field and In Situ acoustic target strengths of juvenile fall Chinook salmon and american shad. Annual report 1993
No abstract availableAuthorsE.E. Kofoot, D.H. Feil, W.S. StastnyNearshore habitat use by subyearling Chinook salmon in the Columbia and Snake Rivers. Annual report 1993
No abstract availableAuthorsL.O. Key, R. Garland, E.E. Kofoot - News