Timothy Counihan (Former Employee)
Science and Products
Filter Total Items: 59
Survival estimates of migrant juvenile salmonids in the Columbia River from John Day Dam through Bonneville Dam using radio-telemetry. Annual report 2000 Survival estimates of migrant juvenile salmonids in the Columbia River from John Day Dam through Bonneville Dam using radio-telemetry. Annual report 2000
Abstract not available
Authors
T.D. Counihan, J.H. Petersen
Estimating the survival of juvenile salmonids passing through The Dalles Dam using radio-telemetry, 2001 Estimating the survival of juvenile salmonids passing through The Dalles Dam using radio-telemetry, 2001
Abstract not available
Authors
T.D. Counihan, K. Felton, G.S. Holmberg
Length changes in white sturgeon larvae preserved in ethanol or formaldehyde Length changes in white sturgeon larvae preserved in ethanol or formaldehyde
We examined the effects of two preservatives on the notochord and total lengths of white sturgeon (Acipenser transmontanus) larvae. White sturgeon larvae that were one, seven, and 14 days old were measured live and then preserved in 95% ethanol or 10% formaldehyde. Length changes were then determined at 20 and 95 days after preservation. We found mean length changes ranging from 0.4% to...
Authors
J.M. Bayer, T.D. Counihan
The effects of dissolved gas supersaturation on white sturgeon larvae The effects of dissolved gas supersaturation on white sturgeon larvae
Spill at dams has caused supersaturation of atmospheric gas in waters of the Columbia and Snake rivers and raised concerns about the effects of dissolved gas supersaturation (DGS) on white sturgeons Acipenser transmontanus. The timing and location of white sturgeon spawning and the dispersal of white sturgeon larvae from incubation areas makes the larval stage potentially vulnerable to...
Authors
T.D. Counihan, Allen I. Miller, M.G. Mesa, M.J. Parsley
Estimates of fish-, spill-, and sluiceway-passage efficiencies of radio-tagged juvenile steelhead and yearling Chinook salmon at The Dalles Dam, 1999 Estimates of fish-, spill-, and sluiceway-passage efficiencies of radio-tagged juvenile steelhead and yearling Chinook salmon at The Dalles Dam, 1999
Abstract not available
Authors
H.C. Hansel, J.W. Beeman, T.D. Counihan, J.M. Hardiman, B.D. Liedtke, M.S. Novick, J.M. Plumb
Movement, distribution, and behavior of radio-tagged sub-yearling Chinook salmon in the forebay of John Day Dam, 1999 Movement, distribution, and behavior of radio-tagged sub-yearling Chinook salmon in the forebay of John Day Dam, 1999
Abstract not available
Authors
H.C. Hansel, J.W. Beeman, T.D. Counihan, B.D. Liedtke, M.S. Novick, J.M. Plumb
Science and Products
Filter Total Items: 59
Survival estimates of migrant juvenile salmonids in the Columbia River from John Day Dam through Bonneville Dam using radio-telemetry. Annual report 2000 Survival estimates of migrant juvenile salmonids in the Columbia River from John Day Dam through Bonneville Dam using radio-telemetry. Annual report 2000
Abstract not available
Authors
T.D. Counihan, J.H. Petersen
Estimating the survival of juvenile salmonids passing through The Dalles Dam using radio-telemetry, 2001 Estimating the survival of juvenile salmonids passing through The Dalles Dam using radio-telemetry, 2001
Abstract not available
Authors
T.D. Counihan, K. Felton, G.S. Holmberg
Length changes in white sturgeon larvae preserved in ethanol or formaldehyde Length changes in white sturgeon larvae preserved in ethanol or formaldehyde
We examined the effects of two preservatives on the notochord and total lengths of white sturgeon (Acipenser transmontanus) larvae. White sturgeon larvae that were one, seven, and 14 days old were measured live and then preserved in 95% ethanol or 10% formaldehyde. Length changes were then determined at 20 and 95 days after preservation. We found mean length changes ranging from 0.4% to...
Authors
J.M. Bayer, T.D. Counihan
The effects of dissolved gas supersaturation on white sturgeon larvae The effects of dissolved gas supersaturation on white sturgeon larvae
Spill at dams has caused supersaturation of atmospheric gas in waters of the Columbia and Snake rivers and raised concerns about the effects of dissolved gas supersaturation (DGS) on white sturgeons Acipenser transmontanus. The timing and location of white sturgeon spawning and the dispersal of white sturgeon larvae from incubation areas makes the larval stage potentially vulnerable to...
Authors
T.D. Counihan, Allen I. Miller, M.G. Mesa, M.J. Parsley
Estimates of fish-, spill-, and sluiceway-passage efficiencies of radio-tagged juvenile steelhead and yearling Chinook salmon at The Dalles Dam, 1999 Estimates of fish-, spill-, and sluiceway-passage efficiencies of radio-tagged juvenile steelhead and yearling Chinook salmon at The Dalles Dam, 1999
Abstract not available
Authors
H.C. Hansel, J.W. Beeman, T.D. Counihan, J.M. Hardiman, B.D. Liedtke, M.S. Novick, J.M. Plumb
Movement, distribution, and behavior of radio-tagged sub-yearling Chinook salmon in the forebay of John Day Dam, 1999 Movement, distribution, and behavior of radio-tagged sub-yearling Chinook salmon in the forebay of John Day Dam, 1999
Abstract not available
Authors
H.C. Hansel, J.W. Beeman, T.D. Counihan, B.D. Liedtke, M.S. Novick, J.M. Plumb