Publications
USGS divers in the Elwha River
WFRC zebrafish laboratory
Processing a Lost River sucker
Below is a list of available WFRC peer reviewed and published science.
Filter Total Items: 2528
Laboratory studies on the vulnerability of young white sturgeon to predation Laboratory studies on the vulnerability of young white sturgeon to predation
Despite evidence of annual spawning by white sturgeon Acipenser transmontanus in rivers of the northwestern United States and Canada, in some years and locations little or no recruitment of age-0 white sturgeon has been observed. We examined the vulnerability of white sturgeon larvae and juveniles to predation to further understand possible causes of mortality. We were particularly...
Authors
D.M. Gadomski, M.J. Parsley
Performance of juvenile steelhead trout (Oncorhynchus mykiss) produced from untreated and cryopreserved milt Performance of juvenile steelhead trout (Oncorhynchus mykiss) produced from untreated and cryopreserved milt
Despite the expanding use of milt cryopreservation in aquaculture, the performance of fish produced from this technique has not been fully explored beyond initial rearing stages. We compared the performance of juvenile steelhead Oncorhynchus mykiss produced from untreated (UM) and cryopreserved milt (CM) and reared for 4–9 months. For the 1996 brood, CM alevins were heavier (∼ 1.7%, P 0...
Authors
Michael C. Hayes, Stephen P. Rubin, Jay E. Hensleigh, Reginald R. Reisenbichler, Lisa A. Wetzel
Leaf fluctuating asymmetry, soil disturbance and plant stress: A multiple year comparison using two herbs, Ipomoea pandurata and Cnidoscolus stimulosus Leaf fluctuating asymmetry, soil disturbance and plant stress: A multiple year comparison using two herbs, Ipomoea pandurata and Cnidoscolus stimulosus
We studied Cnidoscolus stimulosus and Ipomoea pandurata, two common herbs of the Fall Line Sandhills to assess their potential as ecosystem level stress indicators. We focused on plants because they are among the most persistent organisms in terrestrial ecosystems. We used developmental instability as an indicator of plant population stress. Developmental instability is usually measured...
Authors
D.C. Freeman, M. L. Brown, J.J. Duda, J.H. Graraham, J.M. Emlen, A.J. Krzysik, H. Balbach, D.A. Kovacic, J.C. Zak
The Columbia River Research Laboratory The Columbia River Research Laboratory
The U.S. Geological Survey's Columbia River Research Laboratory (CRRL) was established in 1978 at Cook, Washington, in the Columbia River Gorge east of Portland, Oregon. The CRRL, as part of the Western Fisheries Research Center, conducts research on fishery issues in the Columbia River Basin. Our mission is to: 'Serve the public by providing scientific information to support the...
Authors
Alec Maule
A spatial model of potential jaguar habitat in Arizona A spatial model of potential jaguar habitat in Arizona
The jaguar (Panthera onca) is an endangered species that occasionally visits the southwestern United States from Mexico. The number of jaguar sightings per decade has declined over the last 100 years in Arizona, USA, raising conservation concerns for the species at a local and national level. In 1997, state, federal, and local governments with land-management responsibilities agreed to
Authors
J.R. Hatten, A. Averill-Murray, W.E. van Pelt
Assessment of low-level water chemistry in selected streams of the Washougal, Lewis, and Winder River watersheds, 2003 final report Assessment of low-level water chemistry in selected streams of the Washougal, Lewis, and Winder River watersheds, 2003 final report
No abstract available
Authors
M.G. Mesa, C.M Magie
Wind River Watershed Project: flow, temperature, and habitat conditions. Annual report April 2002-March 2003 Wind River Watershed Project: flow, temperature, and habitat conditions. Annual report April 2002-March 2003
Abstract not available
Authors
I.G. Jezorek, P.J. Connolly, K. Marens
Passage behavior of radio-tagged yearling Chinook salmon and steelhead at Bonneville Dam, 2004: Revised for corrected spill annual report Passage behavior of radio-tagged yearling Chinook salmon and steelhead at Bonneville Dam, 2004: Revised for corrected spill annual report
Flow augmentation, spill, surface collection, and improved turbine guidance systems have been identified as potential management actions to improve passage efficiency and survival of outmigrating juvenile salmonids. The U.S. Army Corps of Engineers (USACE), along with regional, state, and federal resource agencies, has designed and implemented studies to determine which management...
Authors
R.E. Reagan, S.D. Evans, L.S Wright, M.J. Farley, N.S. Adams, D.W. Rondorf
Monitoring and assessment of juvenile steelhead on Toppenish National Wildlife Refuge. Annual report 2003 Monitoring and assessment of juvenile steelhead on Toppenish National Wildlife Refuge. Annual report 2003
Abstract not available
Authors
I.G. Jezorek, P.J. Connolly
Genetic differences between sea-ranched and wild steelhead in survival and growth in the hatchery and seaward migration Genetic differences between sea-ranched and wild steelhead in survival and growth in the hatchery and seaward migration
No abstract available
Authors
S. Rubin, R. Reisenbichler, J. Hensleigh, L. Wetzel, B. Baker
Fish can get diseases too Fish can get diseases too
Infectious diseases are increasingly recognized as an important component of the ecology of fish in the wild. Many of the viral, bacterial, protozoan and fungal pathogens of fish that were initially discovered in captive fish have their origin among wild populations; however, the impact of disease among these free-ranging stocks has been difficult to study. At the WFRC, combinations of...
Authors
J. R. Winton, M. Mesa, G. Kurath, D. Elliot
Assessment of White Salmon watershed using the ecosystem diagnosis and treatment methodology (EDT) Assessment of White Salmon watershed using the ecosystem diagnosis and treatment methodology (EDT)
No abstract available
Authors
M.B. Allen, P.J. Connolly