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Final report : environmental stresses and skeletal deformities in fish from the Willamette River, Oregon, USA

Creator:: Villeneuve, Daniel L., Curtis, Lawrence R., Jenkins, Jeffrey J., Warner, Kara E., Tilton, Fred A., Kent, Michael L., Watral, Virginia G., Cunningham, Michael E., Markle, Douglas F., Sethajintanin, Doolalai, Krissanakriangkrai, Oraphin, Johnson, Eugene R., Grove, Robert Allan, Anderson, Kim A., Oregon State University. Department of Microbiology, Oregon State University. Department of Environmental and Molecular Toxicology, Oregon State University. Department of Fisheries and Wildlife, and Institute for Natural Resources
Abstract:: The Willamette River, one of only 14 American Heritage Rivers, flows through the most densely populated and agriculturally productive region of Oregon. Previous biological monitoring of Willamette River fish detected elevated frequencies of skeletal deformities in fish from certain areas of the lower (NP [NP], rivermile [RM] 26-55) and middle...
Resource Type:: Technical Report
Full Text:: *†. Oregon State University Department of Environmental and Molecular Toxicology, ‡ Department of

Survey of Parasites In Threatened Stocks of Coho Salmon (Oncorhynchus kisutch) In Oregon By Examination of Wet Tissues and Histology

Creator:: Ferguson, Jayde A., St-Hilaire, Sophie, Peterson, Tracy S., Rodnick, Kenneth J., and Kent, Michael L.
Abstract:: We are conducting studies on the impacts of parasites on Oregon coastal coho salmon (Oncorhynchus kistuch). An essential first step is documenting the geographic distribution of infections, which may be accomplished by using different methods for parasite detection. Thus, the objectives of the current study were to (1) identify parasite...
Resource Type:: Article
Full Text:: -Hilaire�, Tracy S. Peterson, Kenneth J. Rodnick�, and Michael L. Kent Department of Microbiology, Oregon

Interactions between microbial dynamics, water flow, and solute transport in unsaturated porous media

Creator:: Yarwood, Rockie R.
Abstract:: Bioremediation in the vadose zone is unpredictable because of poor understanding of factors influencing microbial growth in this environment. A lab-scale experimental system was developed to examine, noninvasively, interactions between microbial growth, water flow, and solute transport in unsaturated porous media. Measurements of microbial colonization, and its impact on hydrology,...
Resource Type:: Dissertation
Full Text:: . APPROVED: Major Professor, representing f Department of Microbi Dean of th'ad'uate School I understand

Impacts of multispecies parasitism on coho salmon (Oncorhynchus kisutch) in Oregon

Creator:: Ferguson, Jayde A.
Abstract:: Diseases caused by parasites are recognized as significant sources of mortality in wild fish populations. I assessed the impacts of multispecies parasitism on a threatened stock of juvenile coho salmon (Oncorhynchus kisutch). A crucial prerequisite to this research was proper identification of parasites, which can be difficult for species lacking...
Resource Type:: Dissertation
Full Text:: project possible. Research personnel at Oregon Department of Fish and Wildlife (ODFW), in particular

The response of nitrifying bacteria to treatments of N-Serve and Roundup in continuous-flow soil columns

Creator:: Rhodes, Albert N.
Abstract:: This study examined the effects of Roundup [N-(phosphonomethyl) glycine] and N-Serve [2-chloro-6- (trichloromethyl) pyridine] on nitrifying organisms in static batch, perfusion soil columns, and a new continuous-flow soil column system. The continuous-flow method is new to nitrification studies and was shown to produce greater nitrifier activity than either static batch...
Resource Type:: Masters Thesis
Full Text:: counting of nitrifying organisms; The Air Force Institute of Technology and the Department of Biology, US

Effects of disturbance scale on soil microbial communities in the Western Cascades of Oregon

Creator:: Kageyama, Stacie A., Posavatz, Nancy R., Jones, Sarah S., Waterstripe, Kirk E., Bottomley, Peter J., Cromack Jr., Kermit, and Myrold, David D.
Abstract:: To gain a better understanding of how rapidly microbial communities respond to different magnitudes of perturbation that mimic minor or catastrophic disturbances. Two montane sites in the western Cascade Mountains of Oregon with adjacent areas of forest and meadow vegetation were studied. A reciprocal transplant experiment evaluated both minor (soil...
Resource Type:: Article
Full Text:: Group, Inc., 234 Midtown Dr., Traverse City, MI 49684, USA S. S. Jones Oregon Department of Agriculture

Predicted Redistribution of Ceratomyxa shasta Genotypes with Salmonid Passage in the Deschutes River, Oregon

Creator:: Stinson, Matthew E. T. and Bartholomew, Jerri L.
Abstract:: Aseries of dams on the Deschutes River, Oregon, act as migration barriers that segregate the river system into upper and lower basins. Proposed fish passage between basins would reunite populations of native potamodromous fish and allow anadromous fish of Deschutes River origin access to the upper basin. We assessed the...
Resource Type:: Article
Full Text:: Deschutes River, Oregon Matthew E. T. Stinson and Jerri L. Bartholomew* Department of Microbiology, Oregon

Impacts of Multispecies Parasitism on Juvenile Coho Salmon (Oncorhynchus kisutch) in Oregon

Creator:: Ferguson, Jayde, Romer, Jeremy, Sifneos, Jean C., Madsen, Lisa, Schreck, Carl B., Glynn, Michael, and Kent, Michael L.
Abstract:: We are studying the impacts of parasites on threatened stocks of Oregon coastal coho salmon (Oncorhynchus kisutch). In our previous studies, we have found high infections of digeneans and myxozoans in coho salmon parr from the lower main stem of West Fork Smith River (WFSR), Oregon. In contrast parr from...
Resource Type:: Article

Dam Removal and Implications for Fish Health: Ceratomyxa shasta in the Williamson River, Oregon, USA

Creator:: Hurst, Charlene N., Holt, Richard A., and Bartholomew, Jerri L.
Abstract:: The removal of dams on a river is one potential tool for the ecological restoration of native salmonid fishes. However, the removal of barriers also introduces risks, such as the introduction of fish pathogens into previously isolated populations. The proposed removal of four dams on the Klamath River, Oregon–California, provides...
Resource Type:: Article
Full Text:: , Oregon, USA Charlene N. Hurst, Richard A. Holt, and Jerri L. Bartholomew* Department of Microbiology

Growth and development of tetracycline resistant Chlamydia suis

Creator:: Lenart, Jennifer
Abstract:: Tetracycline is a front line antibiotic for the treatment of chlamydial infections in both humans and animals, and the emergence of tetracycline resistant (tet[superscript R]) Chlamydia is of significant clinical importance. Recently, several tet[superscript R] chlamydial strains have been isolated from swine (Sus scrofa) raised in production facilities in Nebraska....
Resource Type:: Masters Thesis
Full Text:: Oregon State University In partial fulfillment of the requirements for the degree of Master of

ScholarsArchive@OSU

Final report : environmental stresses and skeletal deformities in fish from the Willamette River, Oregon, USA

Survey of Parasites In Threatened Stocks of Coho Salmon (Oncorhynchus kisutch) In Oregon By Examination of Wet Tissues and Histology

Interactions between microbial dynamics, water flow, and solute transport in unsaturated porous media

Impacts of multispecies parasitism on coho salmon (Oncorhynchus kisutch) in Oregon

The response of nitrifying bacteria to treatments of N-Serve and Roundup in continuous-flow soil columns

Effects of disturbance scale on soil microbial communities in the Western Cascades of Oregon

Predicted Redistribution of Ceratomyxa shasta Genotypes with Salmonid Passage in the Deschutes River, Oregon

Impacts of Multispecies Parasitism on Juvenile Coho Salmon (Oncorhynchus kisutch) in Oregon

Dam Removal and Implications for Fish Health: Ceratomyxa shasta in the Williamson River, Oregon, USA

Growth and development of tetracycline resistant Chlamydia suis

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