Kenneth Tiffan (Former Employee)
Science and Products
Filter Total Items: 111
Crims Island habitat restoration in the Columbia River estuary-fisheries monitoring and evaluation. 2003 Draft report of research
Abstract not available
Authors
C. A. Haskell, K.F. Tiffan, R.C. Koch, D.W. Rondorf
Water temperature effects on fall Chinook salmon in the Snake and Columbia Rivers. 2001 Final report of research
No abstract available
Authors
K.T. Tiffan, C. A. Haskell, J.A. Heinz, M.G. Mesa, D.W. Rondorf
Post-release attributes and survival of hatchery and natural fall Chinook salmon in the Snake River. Annual report 2000-2001
Abstract not available
Authors
K.F. Tiffan, D.W. Rondorf, W.P. Connor
Thermal exposure of juvenile fall chinook salmon migrating through a lower Snake River Reservoir
Impoundment of the Snake River, Washington, has resulted in high water temperatures and late seaward migration of juvenile fall chinook salmon during summer months. To determine if juvenile fall chinook salmon are exposed to temperatures higher than the upper incipient lethal, we tagged groups of fish with temperature-sensing radio tags and tracked them in Little Goose Reservoir on the...
Authors
K.F. Tiffan, C. A. Haskell, D.W. Rondorf
Quantifying flow-dependent changes in subyearling fall chinook salmon rearing habitat using two-dimensional spatially explicit modeling
We used an analysis based on a geographic information system (GIS) to determine the amount of rearing habitat and stranding area for subyearling fall chinook salmon Oncorhynchus tshawytscha in the Hanford Reach of the Columbia River at steady-state flows ranging from 1,416 to 11,328 m3/s. High-resolution river channel bathymetry was used in conjunction with a two-dimensional hydrodynamic...
Authors
K.F. Tiffan, R.D. Garland, D.W. Rondorf
Comparison of subyearling fall chinook salmon's use of riprap revetments and unaltered habitats in Lake Wallula of the Columbia river
Subyearling fall chinook salmon's Oncorhynchus tshawytscha use of unaltered and riprap habitats in Lake Wallula of the Columbia River was determined with point abundance data collected by electrofishing in May 1994 and 1995. We documented the presence or absence of subyearlings at 277 sample sites and collected physical habitat information at each site. Based on logistic regression, we...
Authors
R.D. Garland, K.F. Tiffan, D.W. Rondorf, L.O. Clark
Spatial, temporal, and community dynamics of zooplankton in McNary and John Day Reservoirs
Abstract not available
Authors
C. A. Haskell, D.W. Rondorf, K.F. Tiffan
Early life history attributes and run composition of PIT-tagged wild subyearling Chinook salmon recaptured after migrating downstream past Lower Granite Dam
Seaward migration timing of Snake River fall chinook salmon (Oncorhynchus tshawytscha) smolts is indexed using subyearling chinook salmon passage data collected at Lower Granite Dam. However, not all of the subyearlings are fall chinook salmon. For six years, we recaptured wild subyearling chinook salmon smolts, which had been previously PIT tagged in the Snake River, to genetically...
Authors
W.P. Connor, T.C. Bjornn, H.L. Burge, A.R. Marshall, H.L. Blankenship, R.K. Steinhorst, K.F. Tiffan
Post-release attributes and survival of hatchery and natural fall Chinook salmon in the Snake River
Abstract not available
Authors
K.F. Tiffan, D.W. Rondorf, H.L. Burge
Identification of juvenile fall versus spring chinook salmon migrating through the lower Snake River based on body morphology
We tested the use of body morphology to distinguish among subyearling fall-run, subyearling spring-run, and yearling spring-run smolts of chinook salmon Oncorhynchus tshawytscha at two lower Snake River dams during the summer emigration. Based on principal-components analysis, subyearling fall-run chinook salmon had smaller heads and eyes, deeper bodies, and shorter caudal peduncles than...
Authors
K.F. Tiffan, D.W. Rondorf, R.D. Garland, P.A. Verhey
Physiological development and migratory behavior of subyearling fall chinook salmon in the Columbia River
We describe the migratory behavior and physiological development of subyearling fall chinook salmon Oncorhynchus tshawytscha migrating through John Day Reservoir on the Columbia River, Washington and Oregon. Fish were freeze-branded and coded-wire-tagged at McNary Dam, Oregon, from 1991 to 1994, to determine travel time to John Day Dam and subsequent adult contribution. Stepwise multiple...
Authors
K.F. Tiffan, D.W. Rondorf, P.G. Wagner
Pre-dredging assessment of Messner Cove, Port of Morrow, Oregon on benthic invertebrate community and subyearling Chinook salmon rearing habitat. 1999 Final report
Abstract not available
Authors
C. A. Haskell, K.F. Tiffan, D.W. Rondorf
Science and Products
Filter Total Items: 111
Crims Island habitat restoration in the Columbia River estuary-fisheries monitoring and evaluation. 2003 Draft report of research
Abstract not available
Authors
C. A. Haskell, K.F. Tiffan, R.C. Koch, D.W. Rondorf
Water temperature effects on fall Chinook salmon in the Snake and Columbia Rivers. 2001 Final report of research
No abstract available
Authors
K.T. Tiffan, C. A. Haskell, J.A. Heinz, M.G. Mesa, D.W. Rondorf
Post-release attributes and survival of hatchery and natural fall Chinook salmon in the Snake River. Annual report 2000-2001
Abstract not available
Authors
K.F. Tiffan, D.W. Rondorf, W.P. Connor
Thermal exposure of juvenile fall chinook salmon migrating through a lower Snake River Reservoir
Impoundment of the Snake River, Washington, has resulted in high water temperatures and late seaward migration of juvenile fall chinook salmon during summer months. To determine if juvenile fall chinook salmon are exposed to temperatures higher than the upper incipient lethal, we tagged groups of fish with temperature-sensing radio tags and tracked them in Little Goose Reservoir on the...
Authors
K.F. Tiffan, C. A. Haskell, D.W. Rondorf
Quantifying flow-dependent changes in subyearling fall chinook salmon rearing habitat using two-dimensional spatially explicit modeling
We used an analysis based on a geographic information system (GIS) to determine the amount of rearing habitat and stranding area for subyearling fall chinook salmon Oncorhynchus tshawytscha in the Hanford Reach of the Columbia River at steady-state flows ranging from 1,416 to 11,328 m3/s. High-resolution river channel bathymetry was used in conjunction with a two-dimensional hydrodynamic...
Authors
K.F. Tiffan, R.D. Garland, D.W. Rondorf
Comparison of subyearling fall chinook salmon's use of riprap revetments and unaltered habitats in Lake Wallula of the Columbia river
Subyearling fall chinook salmon's Oncorhynchus tshawytscha use of unaltered and riprap habitats in Lake Wallula of the Columbia River was determined with point abundance data collected by electrofishing in May 1994 and 1995. We documented the presence or absence of subyearlings at 277 sample sites and collected physical habitat information at each site. Based on logistic regression, we...
Authors
R.D. Garland, K.F. Tiffan, D.W. Rondorf, L.O. Clark
Spatial, temporal, and community dynamics of zooplankton in McNary and John Day Reservoirs
Abstract not available
Authors
C. A. Haskell, D.W. Rondorf, K.F. Tiffan
Early life history attributes and run composition of PIT-tagged wild subyearling Chinook salmon recaptured after migrating downstream past Lower Granite Dam
Seaward migration timing of Snake River fall chinook salmon (Oncorhynchus tshawytscha) smolts is indexed using subyearling chinook salmon passage data collected at Lower Granite Dam. However, not all of the subyearlings are fall chinook salmon. For six years, we recaptured wild subyearling chinook salmon smolts, which had been previously PIT tagged in the Snake River, to genetically...
Authors
W.P. Connor, T.C. Bjornn, H.L. Burge, A.R. Marshall, H.L. Blankenship, R.K. Steinhorst, K.F. Tiffan
Post-release attributes and survival of hatchery and natural fall Chinook salmon in the Snake River
Abstract not available
Authors
K.F. Tiffan, D.W. Rondorf, H.L. Burge
Identification of juvenile fall versus spring chinook salmon migrating through the lower Snake River based on body morphology
We tested the use of body morphology to distinguish among subyearling fall-run, subyearling spring-run, and yearling spring-run smolts of chinook salmon Oncorhynchus tshawytscha at two lower Snake River dams during the summer emigration. Based on principal-components analysis, subyearling fall-run chinook salmon had smaller heads and eyes, deeper bodies, and shorter caudal peduncles than...
Authors
K.F. Tiffan, D.W. Rondorf, R.D. Garland, P.A. Verhey
Physiological development and migratory behavior of subyearling fall chinook salmon in the Columbia River
We describe the migratory behavior and physiological development of subyearling fall chinook salmon Oncorhynchus tshawytscha migrating through John Day Reservoir on the Columbia River, Washington and Oregon. Fish were freeze-branded and coded-wire-tagged at McNary Dam, Oregon, from 1991 to 1994, to determine travel time to John Day Dam and subsequent adult contribution. Stepwise multiple...
Authors
K.F. Tiffan, D.W. Rondorf, P.G. Wagner
Pre-dredging assessment of Messner Cove, Port of Morrow, Oregon on benthic invertebrate community and subyearling Chinook salmon rearing habitat. 1999 Final report
Abstract not available
Authors
C. A. Haskell, K.F. Tiffan, D.W. Rondorf