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: 2526
Status and habitat requirements of white sturgeon populations in the Columbia River downstream from McNary Dam Status and habitat requirements of white sturgeon populations in the Columbia River downstream from McNary Dam
No abstract available
Authors
S.D. Duke, T.J. Underwood, G.M. Asbridge, R.G. Griswold, M.J. Parsley, L.G. Beckman
Magnitude and dynamics of predation on juvenile salmonids in Columbia and Snake River reservoirs. Annual report 1989 Magnitude and dynamics of predation on juvenile salmonids in Columbia and Snake River reservoirs. Annual report 1989
No abstract available
Authors
J.H. Petersen, M.G. Mesa, J. Hall-Griswold, W.C. Schrader, G.W. Short, T.P. Poe
Spatial and temporal variation in proportional stock density and relative weight of smallmouth bass in a reservoir Spatial and temporal variation in proportional stock density and relative weight of smallmouth bass in a reservoir
Population data for smallmouth bass Micropterus dolomieui in 20,235 ha John Day Reservoir on the Columbia River were used to (1) determine whether Proportional Stock Density (PSD) and Relative Weight (Wr) varied spatially and temporally in two areas of the reservoir with established smallmouth bass fisheries; (2) explore possible causes of any observed variation; and (3) discuss some...
Authors
Matthew G. Mesa, S.D. Duke, David L. Ward
Assessment of smolt condition for travel time analysis. Annual report 1988 Assessment of smolt condition for travel time analysis. Annual report 1988
Estimates of migration rates and travel times of juvenile salmonids within index reaches of the Columbia River basin are collected through the Smolt Monitoring Program for use by the Fish Passage Center. With increased reliance upon travel time estimates in 1988 by the Fish Passage Center, this study was implemented to monitor the biological attributes of juvenile chinook salmon...
Authors
D.W. Rondorf, J.W. Beeman, J.C. Faler, M.E. Free, E.J. Wagner
Modeling the impact of SONGS on kelp beds: Application of RAMAS-K Modeling the impact of SONGS on kelp beds: Application of RAMAS-K
No abstract available
Authors
J.H. Petersen
Development of a population model of giant kelp Development of a population model of giant kelp
No abstract available
Authors
J.H. Petersen, M. Burgman, V. Gerard, L. Ginzburg
Juvenile fish transportation: Impact of bacterial kidney disease on survival of spring/summer Chinook salmon stocks. Annual report 1988 Juvenile fish transportation: Impact of bacterial kidney disease on survival of spring/summer Chinook salmon stocks. Annual report 1988
No abstract available
Authors
R.J. Pascho, D.G. Elliott
Species profiles: Life histories and environmental requirements of coastal fishes and invertebrates (Pacific Northwest)--ghost and blue mud shrimp Species profiles: Life histories and environmental requirements of coastal fishes and invertebrates (Pacific Northwest)--ghost and blue mud shrimp
Geographic range: The ghost shrimp is found in intertidal areas along the west coast of North America from Mutiny Bay, Alaska, to the mouth of the Tijuana River, San Diego County, California; MacGinitie (1934) and Ricketts and Calvin (1968) reported finding specimens as far south as El Estuario de Punto Banda, Baja California Norte, Mexico. The blue mud shrimp is found from southeastern...
Authors
S. Hornig, A. Sterling, Styles Smith
Interaction assessment: Rationale and a test using plants Interaction assessment: Rationale and a test using plants
A non-manipulative method for deriving empirical expressions of population growth parameters from simple field data is presented. The derived expressions can be used to assess the intensity and form of density dependence and interspecies interactions, and have potential for parameterizing more mechanistic models of population dynamics and for use in applied ecology, e.g. land management...
Authors
J.M. Emlen, D.C. Freeman, F. Wagstaff
Comparison of infectious hematopoietic necrosis in natural and experimental infections of spawning salmonids by infectivity and immunohistochemistry Comparison of infectious hematopoietic necrosis in natural and experimental infections of spawning salmonids by infectivity and immunohistochemistry
Infectious hematopoietic necrosis (IHN) continues to be a serious virus disease of salmonids with epizootics recorded in both wild and hatchery populations (Williams and Amend 1976; Carlisle et al 1979; Groberg and Fryer 1983; Saft and Pratt 1986; Traxler 1987; Follett et al 1987; Meyers et al 1988). While originally enzootic in western North America, the virus appears to be spreading...
Authors
T. Yamamoto, C.K. Arakawa, W.N. Batts, J. R. Winton
Enhanced detection of infectious hematopoietic necrosis virus by pretreatment of cell monolayers with polyethylene glycol Enhanced detection of infectious hematopoietic necrosis virus by pretreatment of cell monolayers with polyethylene glycol
To improve quantification of very low levels of infectious hematopoietic necrosis virus (IHNV) in samples of tissue, ovarian fluid, or natural water supplies, we tested the ability of polyethylene glycol (PEG) to enhance the sensitivity and speed of the plaque assay system. We compared 4, 7, and 10% solutions of PEG of molecular weight 6,000, 8,000, or 20,000 applied at selected volumes...
Authors
W.N. Batts, J. R. Winton
Animal population dynamics: Identification of critical components Animal population dynamics: Identification of critical components
There is a growing interest in the use of population dynamics models in environmental risk assessment and the promulgation of environmental regulatory policies. Unfortunately, because of species and areal differences in the physical and biotic influences on population dynamics, such models must almost inevitably be both complex and species- or site-specific. Given the emormous variety of...
Authors
J.M. Emlen, E.K. Pikitch