Index Catalog // ScholarsArchive@OSU

Physiological and organism level endpoints in the beetle pterostichus oblongopunctatus (Coleoptera: Carabidae), inhabiting a gradient of heavy metal pollution

Creator:: Stone, David
Abstract:: Pollutant body burdens, ability to tolerate supplementary stressors, and biomarkers of physiological stress were investigated in the ground beetle, Pterostichus oblongopunctatus (Coleoptera: Carabidae), inhabiting a gradient of heavy metal contamination in Poland. The central question was to determine if beetles inhabiting polluted habitats incurred costs compared with beetles in less...
Resource Type:: Dissertation
Full Text:: Gradient of Heavy Metal Pollution. Abstract approved Paul Jepson Pollutant body burdens, ability to

Accumulation and effects of 4-nonylphenol in chinook salmon fry and their estuarine amphipod prey

Creator:: Hecht, Scott A.
Abstract:: 4-nonylphenol (NP), a surfactant degradation product, is an unregulated, ubiquitous aquatic contaminant and endocrine disruptor, for which aquatic life criteria are currently under development by U.S. EPA. The effects of NP on estuarine amphipods and chinook salmon fry were investigated, and this dissertation reports research into the impacts of NP...
Resource Type:: Dissertation
Full Text:: . Lamberson, Christian Schaffner, Walter Giger, and Paul C. Jepson ABSTRACT Nonyiphenol (NP) is a moderately

Susceptibility of riparian soil invertebrates to the herbicide triclopyr

Creator:: Moran, Patrick (Patrick William)
Abstract:: Riparian zones of Pacific Northwest forests have high species diversity and abundance and act as an important interface between the aquatic and terrestrial ecosystems. In addition, riparian zones comprise a significant portion of the total buffer zone established during commercial forest production to protect aquatic ecosystems from adjacent management activities....
Resource Type:: Masters Thesis
Full Text:: and time in sharing the cabinet sprayer. Most importantly, I would like to thank my advisors, Paul

Selenium and trace metal accumulation in detrital-benthic food webs of lotic and lentic wetlands, Utah, USA

Creator:: Hillwalker, Wendy E.
Abstract:: Concentrations of selenium (Se), manganese (Mn), zinc (Zn), cadmium (Cd), lead (Pb) and arsenic (As) were measured in the water column, sediment and biota, in conjunction with selected physicochemical data, from representative wetland types at a mining site within Salt Lake County, Utah, USA. The selected field sites included Oolitic...
Resource Type:: Dissertation
Full Text:: , the author is grateful to her major professors, Kim A. Anderson and Paul C. Jepson, for providing

Enhancing the predatory potential of hoverflies on aphids in Oregon broccoli fields with floral resources

Creator:: Ambrosino, Mario D.
Abstract:: Four key aspects of the relationship between predatory hoverflies and the aphid pest Brevicoryne brassicae L. on broccoli were investigated in the Willamette Valley, Oregon USA: 1) the relationship between aphid density and hoverfly oviposition, 2) the larval voracity of key hoverfly species, 3) the preferences of hoverflies and broccoli...
Resource Type:: Dissertation
Full Text:: Dr. Paul Jepson and Dr. John Luna for their support and edits. The valuable comments of Dr. Steve

The use of native macroinverebrates to assess pesticide risk to Oregon streams

Creator:: Peterson, Jennifer L.
Resource Type:: Dissertation

Habitat associations and life histories of odonata in riverine wetlands of the Willamette Valley, Oregon

Creator:: Beatty, Christopher D.
Abstract:: This thesis explored the distributions and life histories of dragonflies and damselflies (Insecta: Odonata) of the riverine wetlands of the Willamette Valley in western Oregon, USA. Odonate species distributions were characterized over two seasons in the autumn of 2000 and the spring of 2001-at twenty-seven wetlands located throughout the valley....
Resource Type:: Masters Thesis
Full Text:: privacy Redacted for privacy ACKNOWLEDGEMENTS I would like to thank my advisors, Dr. Paul C. Jepson

Effects of esfenvalerate on native macroinvertebrates representative of Pacific Northwest streams

Creator:: Johnson, Katherine R.
Abstract:: Aquatic insects are essential components of healthy stream ecosystems, contributing to nutrient cycling, trophic dynamics and other ecological functions. Aquatic insect species, particularly those in the orders Ephemeroptera, Plecoptera and Trichoptera (EPT taxa) are however, extremely sensitive to insecticide contamination. Given that urban and agricultural use of synthetic pyrethroid insecticides...
Resource Type:: Dissertation
Full Text:: : _____________________________________________________________________ Paul C. Jepson Jeffrey J. Jenkins Aquatic insects are essential components of

The suitability of optical particle counters for covariance estimates of the dry deposition velocity of particulate aerosols

Creator:: Hubbe, John McBain
Abstract:: Experimental work at the 1982 Dry Deposition Intercomparison Experiment (DDIEx) involved the use of optical particle counters for covariance estimates of dry deposition velocities of accumulation mode aerosols. Meteorological and particle flux observations are presented. Deposition velocity estimates exhibit scatter about zero. A formulation of the standard error of the...
Resource Type:: Masters Thesis
Full Text:: Abstract approved: Paul C. Katen Experimental 'ark at the 1982 Dry Deposition Intercomparison Experiment

An Evaluation of Design and Inference in Special Topics of Group Sequential Procedures

Creator:: Skalland, Timothy Michael
Abstract:: Randomized trials are the gold standard for the clinical assessment of a new treatment compared to a placebo or standard of care. Often in clinical trials, patients are accrued sequentially rather than all at once. Thus, the data from such a trial becomes available sequentially to the researcher. Monitoring and...
Resource Type:: Dissertation
Full Text:: : Sarah C. Emerson Randomized trials are the gold standard for the clinical assessment of a new treat

ScholarsArchive@OSU

Physiological and organism level endpoints in the beetle pterostichus oblongopunctatus (Coleoptera: Carabidae), inhabiting a gradient of heavy metal pollution

Accumulation and effects of 4-nonylphenol in chinook salmon fry and their estuarine amphipod prey

Susceptibility of riparian soil invertebrates to the herbicide triclopyr

Selenium and trace metal accumulation in detrital-benthic food webs of lotic and lentic wetlands, Utah, USA

Enhancing the predatory potential of hoverflies on aphids in Oregon broccoli fields with floral resources

The use of native macroinverebrates to assess pesticide risk to Oregon streams

Habitat associations and life histories of odonata in riverine wetlands of the Willamette Valley, Oregon

Effects of esfenvalerate on native macroinvertebrates representative of Pacific Northwest streams

The suitability of optical particle counters for covariance estimates of the dry deposition velocity of particulate aerosols

An Evaluation of Design and Inference in Special Topics of Group Sequential Procedures

Limit your search

Academic Affiliation

Advisor

Commencement Year

Committee Member

Creator

Date

Decade

Degree Field

Degree Level

Degree Name

File Format

Language

License

Non-Academic Affiliation

Peer Reviewed

Resource Type

Rights Statement

Subject

Search Constraints

Search Results

Limit your search