Timothy Counihan (Former Employee)
Science and Products
Filter Total Items: 59
Estimates of fish and spill passage efficiency of radio-tagged juvenile steelhead and yearling Chinook salmon at John Day Dam, 1999 Estimates of fish and spill passage efficiency of radio-tagged juvenile steelhead and yearling Chinook salmon at 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
Influence of externally attached trasmitters on the swimming performance of juvenile white sturgeon Influence of externally attached trasmitters on the swimming performance of juvenile white sturgeon
We measured the critical swimming speed of juvenile white sturgeons Acipenser transmontanus equipped with externally attached dummy ultrasonic transmitters and of untagged control fish in the laboratory. White sturgeons ranging from 31.9 to 37.0 cm fork length were subjected to one of three treatments: Control (handled but not tagged), tag attached below the dorsal fin, and tag attached...
Authors
T.D. Counihan, C.N. Frost
Indexing the relative abundance of age-0 white sturgeons in an impoundment of the lower Columbia River from highly skewed trawling data Indexing the relative abundance of age-0 white sturgeons in an impoundment of the lower Columbia River from highly skewed trawling data
The development of recruitment monitoring programs for age-0 white sturgeons Acipenser transmontanus is complicated by the statistical properties of catch-per-unit-effort (CPUE) data. We found that age-0 CPUE distributions from bottom trawl surveys violated assumptions of statistical procedures based on normal probability theory. Further, no single data transformation uniformly satisfied...
Authors
T.D. Counihan, Allen Miller, M.J. Parsley
Feasibility of extracting survival information from radio-telemetry studies at the John Day Dam Feasibility of extracting survival information from radio-telemetry studies at the John Day Dam
Abstract not available
Authors
T.D. Counihan, J.H. Petersen, N.S. Adams, R.S. Shively, H.C. Hansel
Effects of mitigative measures on productivity of white sturgeon populations in the Columbia River downstream from McNary Dam, and status and habitat requirements of white sturgeon populations in the Columbia and Snake rivers upstream from McNary Dam Effects of mitigative measures on productivity of white sturgeon populations in the Columbia River downstream from McNary Dam, and status and habitat requirements of white sturgeon populations in the Columbia and Snake rivers upstream from McNary Dam
Abstract not available
Authors
M.J. Parsley, T.D. Counihan, M.N. Morgan, D. Gallion
Effects of mitigative measures on productivity of white sturgeon populations in the Columbia River downstream from McNary Dam, and status and habitat requirements of white sturgeon populations in the Columbia and Snake rivers upstream from McNary Dam Effects of mitigative measures on productivity of white sturgeon populations in the Columbia River downstream from McNary Dam, and status and habitat requirements of white sturgeon populations in the Columbia and Snake rivers upstream from McNary Dam
No abstract available
Authors
M.J. Parsley, Allen Miller, T.D. Counihan, M.N. Morgan, D. Gallion
Effects of mitigative measures on productivity of white sturgeon populations in the Columbia River downstream from McNary Dam and status and habitat requirements of white sturgeon populations in the Columbia and Snake rivers upstream from McNary Dam. Repo Effects of mitigative measures on productivity of white sturgeon populations in the Columbia River downstream from McNary Dam and status and habitat requirements of white sturgeon populations in the Columbia and Snake rivers upstream from McNary Dam. Repo
Not abstract available
Authors
M.J. Parsley, T.D. Counihan, Allen Miller, M.N. Morgan, D. Gallion
Effects of mitigative measures on productivity of white sturgeon populations in the Columbia River downstream from McNary Dam and status and habitat requirements of white sturgeon populations in the Columbia and Snake Rivers upstream from McNary Dam Effects of mitigative measures on productivity of white sturgeon populations in the Columbia River downstream from McNary Dam and status and habitat requirements of white sturgeon populations in the Columbia and Snake Rivers upstream from McNary Dam
No abstract available
Authors
T.D. Counihan, Allen Miller, M.J. Parsley, L.G. Beckman
Columbia River Basin white sturgeon Columbia River Basin white sturgeon
White sturgeon (Acipenser transmontanus), the largest freshwater fish in North America, live along the west coast from the Aleutian Islands to central California (Scott and Crossman 1973). Genetically similar reproducing populations inhabit three major river basins: Sacramento-San Joaquin, Columbia, and Fraser. The greatest number of white sturgeon are in the Columbia River Basin.
Authors
Allen Miller, Timothy Counihan, Michael Parsley, Lance Beckman
Effects of mitigative measures on productivity of white sturgeon populations in the Columbia River downstream from McNary Dam, and status and habitat requirements of white sturgeon populations in the Columbia and Snake rivers upstream from McNary Dam Effects of mitigative measures on productivity of white sturgeon populations in the Columbia River downstream from McNary Dam, and status and habitat requirements of white sturgeon populations in the Columbia and Snake rivers upstream from McNary Dam
No abstract available
Authors
M.J. Parsley, T.D. Counihan, Allen Miller
Effects of mitigative measures on productivity of white sturgeon populations in Columbia River downstream from McNary Dam Effects of mitigative measures on productivity of white sturgeon populations in Columbia River downstream from McNary Dam
No abstract available
Authors
Allen Miller, T.D. Counihan, M.J. Parsley, L.G. Beckman
Science and Products
Filter Total Items: 59
Estimates of fish and spill passage efficiency of radio-tagged juvenile steelhead and yearling Chinook salmon at John Day Dam, 1999 Estimates of fish and spill passage efficiency of radio-tagged juvenile steelhead and yearling Chinook salmon at 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
Influence of externally attached trasmitters on the swimming performance of juvenile white sturgeon Influence of externally attached trasmitters on the swimming performance of juvenile white sturgeon
We measured the critical swimming speed of juvenile white sturgeons Acipenser transmontanus equipped with externally attached dummy ultrasonic transmitters and of untagged control fish in the laboratory. White sturgeons ranging from 31.9 to 37.0 cm fork length were subjected to one of three treatments: Control (handled but not tagged), tag attached below the dorsal fin, and tag attached...
Authors
T.D. Counihan, C.N. Frost
Indexing the relative abundance of age-0 white sturgeons in an impoundment of the lower Columbia River from highly skewed trawling data Indexing the relative abundance of age-0 white sturgeons in an impoundment of the lower Columbia River from highly skewed trawling data
The development of recruitment monitoring programs for age-0 white sturgeons Acipenser transmontanus is complicated by the statistical properties of catch-per-unit-effort (CPUE) data. We found that age-0 CPUE distributions from bottom trawl surveys violated assumptions of statistical procedures based on normal probability theory. Further, no single data transformation uniformly satisfied...
Authors
T.D. Counihan, Allen Miller, M.J. Parsley
Feasibility of extracting survival information from radio-telemetry studies at the John Day Dam Feasibility of extracting survival information from radio-telemetry studies at the John Day Dam
Abstract not available
Authors
T.D. Counihan, J.H. Petersen, N.S. Adams, R.S. Shively, H.C. Hansel
Effects of mitigative measures on productivity of white sturgeon populations in the Columbia River downstream from McNary Dam, and status and habitat requirements of white sturgeon populations in the Columbia and Snake rivers upstream from McNary Dam Effects of mitigative measures on productivity of white sturgeon populations in the Columbia River downstream from McNary Dam, and status and habitat requirements of white sturgeon populations in the Columbia and Snake rivers upstream from McNary Dam
Abstract not available
Authors
M.J. Parsley, T.D. Counihan, M.N. Morgan, D. Gallion
Effects of mitigative measures on productivity of white sturgeon populations in the Columbia River downstream from McNary Dam, and status and habitat requirements of white sturgeon populations in the Columbia and Snake rivers upstream from McNary Dam Effects of mitigative measures on productivity of white sturgeon populations in the Columbia River downstream from McNary Dam, and status and habitat requirements of white sturgeon populations in the Columbia and Snake rivers upstream from McNary Dam
No abstract available
Authors
M.J. Parsley, Allen Miller, T.D. Counihan, M.N. Morgan, D. Gallion
Effects of mitigative measures on productivity of white sturgeon populations in the Columbia River downstream from McNary Dam and status and habitat requirements of white sturgeon populations in the Columbia and Snake rivers upstream from McNary Dam. Repo Effects of mitigative measures on productivity of white sturgeon populations in the Columbia River downstream from McNary Dam and status and habitat requirements of white sturgeon populations in the Columbia and Snake rivers upstream from McNary Dam. Repo
Not abstract available
Authors
M.J. Parsley, T.D. Counihan, Allen Miller, M.N. Morgan, D. Gallion
Effects of mitigative measures on productivity of white sturgeon populations in the Columbia River downstream from McNary Dam and status and habitat requirements of white sturgeon populations in the Columbia and Snake Rivers upstream from McNary Dam Effects of mitigative measures on productivity of white sturgeon populations in the Columbia River downstream from McNary Dam and status and habitat requirements of white sturgeon populations in the Columbia and Snake Rivers upstream from McNary Dam
No abstract available
Authors
T.D. Counihan, Allen Miller, M.J. Parsley, L.G. Beckman
Columbia River Basin white sturgeon Columbia River Basin white sturgeon
White sturgeon (Acipenser transmontanus), the largest freshwater fish in North America, live along the west coast from the Aleutian Islands to central California (Scott and Crossman 1973). Genetically similar reproducing populations inhabit three major river basins: Sacramento-San Joaquin, Columbia, and Fraser. The greatest number of white sturgeon are in the Columbia River Basin.
Authors
Allen Miller, Timothy Counihan, Michael Parsley, Lance Beckman
Effects of mitigative measures on productivity of white sturgeon populations in the Columbia River downstream from McNary Dam, and status and habitat requirements of white sturgeon populations in the Columbia and Snake rivers upstream from McNary Dam Effects of mitigative measures on productivity of white sturgeon populations in the Columbia River downstream from McNary Dam, and status and habitat requirements of white sturgeon populations in the Columbia and Snake rivers upstream from McNary Dam
No abstract available
Authors
M.J. Parsley, T.D. Counihan, Allen Miller
Effects of mitigative measures on productivity of white sturgeon populations in Columbia River downstream from McNary Dam Effects of mitigative measures on productivity of white sturgeon populations in Columbia River downstream from McNary Dam
No abstract available
Authors
Allen Miller, T.D. Counihan, M.J. Parsley, L.G. Beckman