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: 2517
Development and corroboration of a bioenergetics model for northern pikeminnow (Ptychocheilus oregonensis) feeding on juvenile salmonids in the Columbia River Development and corroboration of a bioenergetics model for northern pikeminnow (Ptychocheilus oregonensis) feeding on juvenile salmonids in the Columbia River
A bioenergetics model was developed and corroborated for northern pikeminnow Ptychocheilus oregonensis, an important predator on juvenile salmonids in the Pacific Northwest. Predictions of modeled predation rate on salmonids were compared with field data from three areas of John Day Reservoir (Columbia River). To make bioenergetics model estimates of predation rate, three methods were...
Authors
J.H. Petersen, D.L. Ward
Characterization of branch complexity by fractal analyses and detect plant functional adaptations Characterization of branch complexity by fractal analyses and detect plant functional adaptations
The comparison between complexity in the sense of space occupancy (box-counting fractal dimension Dc and information dimension DI ) and heterogeneity in the sense of space distribution (average evenness index and evenness variation coefficient JCV) were investigated in mathematical fractal objects and natural branch ¯ J structures. In general, increased fractal dimension was paired with...
Authors
C.L. Alados, J. Escos, J.M. Emlen, D.C. Freeman
Pathogenecity of Ichthyophonus hoferi for laboratory-reared Pacific herring (Clupea pallasi) and its early appearance in wild Puget Sound herring Pathogenecity of Ichthyophonus hoferi for laboratory-reared Pacific herring (Clupea pallasi) and its early appearance in wild Puget Sound herring
Laboratory-reared pathogen-free Pacific herring were exposed to pure cultures of Ichthyophonus hoferi, and reproduced the disease seen in naturally infected fish--thus fulfilling Koch's Postulates. Pathogen-free herring used in this study were reared from artificially spawned eggs incubated in filtered, UV-sterilized seawater, eliminating the variables associated with multiple infections...
Authors
R. Kocan, P. Hershberger, T. Mehl, N. Elder, M. Bradley, D. Wildermuth, K. Stick
Fish assemblages and habitat relationships in a small northern Great Plains stream Fish assemblages and habitat relationships in a small northern Great Plains stream
We examined fish populations and environmental characteristics of pool and riffle habitats of Little Beaver Creek, Montana, a small northern Great Plains stream. We collected 4,980 fishes representing 20 species in eight families. The most abundant and species-rich family was Cyprinidae. Nearly 88% (4,369) of all fishes were collected in pools. Pools also supported greater numbers...
Authors
C.A. Barfoot, R.G. White
Outbreeding depression in hybrids between odd-and even-broodyear pink salmon Outbreeding depression in hybrids between odd-and even-broodyear pink salmon
Fewer F2 hybrids between even- and odd-broodline pink salmon (Oncorhynchus gorbuscha), which are lines that are genetically isolated by their strict two-year life cycle, survived than did F2 controls, indicating outbreeding depression. Cryopreserved sperm of 40 broodyear 1990 males and of 40 broodyear 1991 males fertilized equal subsamples of eggs from 40 broodyear 1992 females. Return...
Authors
A.J. Gharrett, W.W. Smoker, R.R. Reisenbichler, S.G. Taylor
Analysis of the nucleoprotein gene identifies three distinct lineages of viral haemorrhagic septicemia virus within the European marine environment Analysis of the nucleoprotein gene identifies three distinct lineages of viral haemorrhagic septicemia virus within the European marine environment
A ribonuclease (RNase) protection assay (RPA) has been used to detect nucleotide sequence variation within the nucleoprotein gene of 39 viral haemorrhagic septicaemia virus (VHSV) isolates of European marine origin. The classification of VHSV isolates based on RPA cleavage patterns permitted the identification of ten distinct groups of viruses based on differences at the molecular level...
Authors
M. Snow, C.O. Cunningham, W.T. Melvin, Gael Kurath
Estimation of fungal diversity via molecular methods Estimation of fungal diversity via molecular methods
No abstract available
Authors
R. J. Rodriguez, D. Cullen, C. Kurtzman, G. Khachatourians
Characteristics of upstream migrating Pacific lampreys (Lampetra tridentata) in the Columbia River Characteristics of upstream migrating Pacific lampreys (Lampetra tridentata) in the Columbia River
Abstract not available
Authors
J.M. Bayer, J.G. Seelye
Identification of the spawning, rearing, and migratory requirements of fall Chinook salmon in the Columbia River Basin. Annual report 1996-1997 Identification of the spawning, rearing, and migratory requirements of fall Chinook salmon in the Columbia River Basin. Annual report 1996-1997
Abstract not available
Authors
K.F. Tiffan, D.W. Rondorf, W.P. Connor, H.L. Burge
Behavior of juvenile Chinook salmon and steelhead relative to the log boom at Lower Granite Dam Behavior of juvenile Chinook salmon and steelhead relative to the log boom at Lower Granite Dam
Abstract not available
Authors
J.M. Plumb, N.S. Adams, D.W. Rondorf
Relative virulence of three isolates of Piscirickettsia salmonis for coho salmon Oncorhynchus kisutch Relative virulence of three isolates of Piscirickettsia salmonis for coho salmon Oncorhynchus kisutch
Piscirickettsia salmonis was first recognized as the cause of mortality among pen-reared coho salmon Oncorhynchus kisutch in Chile. Since the initial isolation of this intracellular Gram-negative bacterium in 1989, similar organisms have been described from several areas of the world, but the associated outbreaks were not reported to be as serious as those that occurred in Chile. To...
Authors
M.L. House, J. L. Bartholomew, J. R. Winton, J. L. Fryer
Wind River watershed project Wind River watershed project
Abstract not available
Authors
P.J. Connolly