Index Catalog // ScholarsArchive@OSU

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:: AN ABSTRACT OF THE DISSERTATION OF Wendy E. Hillwalker for the

Characterization of rodent selenoprotein W promoter

Creator:: Amantana, Adams
Abstract:: Rat selenoprotein W (SeW) promoter activity was investigated using different concentrations of cadmium, copper, and zinc. Two fragments (404bp and 1265bp) of the SeW promoter, containing a single metal response element (MRE), were ligated into the multiple cloning site of a pGL3-Basic reporter plasmid. The constructs were transfected into cultured...
Resource Type:: Dissertation

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:: , support, friendship, and good humor. A big thank you to my lab mates Pat, Dr. Dave, Tony, and Wendy

From pesticide degradation products to legacy toxicants and emerging contaminants : novel analytical methods, approaches, and modeling

Creator:: Forsberg, Norman D.
Abstract:: Environmental toxicologists and public health officials are responsible for assisting in the identification, management, and mitigation of public health hazards. As a result, there is a continued need for robust analytical tools that can aid in the rapid quantification and characterization of chemical exposure. In the first research phase, we...
Resource Type:: Dissertation
Full Text:: , Katrina Waters, Julie Layshock, Angie Perez, and Wendy Hillwalker. I thank the members of my graduate

Continuous monitoring and modeling to assess pesticide exposure in critical habitat for Pacific salmonids

Creator:: Janney, Philip K.
Abstract:: Pacific Northwest and California freshwater resources are key elements in the life history and ecology of Pacific salmon and steelhead listed as threatened or endangered under the Endangered Species Act. Risk to listed Pacific salmonid species can be assessed by evaluating the spatial and temporal co-occurrence of salmonid species at...
Resource Type:: Dissertation
Full Text:: including Kevin Hobbie, Glenn Wilson, Dr. Julie Layshock, Dr. Wendy Hillwalker, Dr. Norman Forsburg, Dr

Development of innovative applications for passive sampling devices : monitoring bioavailability, risk from exposure and environmental mixture toxicity

Creator:: Allan, Sarah E.
Abstract:: Chemicals must be bioavailable for there to be a potential for exposure and consequent risk to human or environmental health. Passive sampling devices (PSDs) are used to quantify the time-integrated concentration of bioavailable contaminants. We demonstrate that PSDs can be paired with the zebrafish developmental toxicity bioassay to produce site-specific,...
Resource Type:: Dissertation
Full Text:: Little for his love, companionship, patience and unwavering support. Finally, to Wendy Hillwalker

Long-term fertilizer input influences total and bioavailable metal in agricultural soils and crops

Creator:: Pérez, Angela L.
Abstract:: Protection of the quality and integrity of food supplies is of global concern. Crops can accumulate non-nutritive and sometimes toxic metals and metalloids. Accumulated metals/metalloids can come in part, from fertilizers, which may contain variable levels of non-nutritive metals or metalloids such as arsenic (As), cadmium (Cd), lead (Pb), nickel...
Resource Type:: Dissertation
Full Text:: Quarles, for their efforts in the field and in the laboratory. I offer a special thanks to Dr. Wendy E

Advanced Approaches in Hazard Assessment of Polycyclic Aromatic Hydrocarbons Using Zebrafish

Creator:: Wilson, Lindsay B.
Abstract:: The field of toxicology is challenged with a vast number of environmental chemicals and mixtures to which humans and ecosystems are exposed with limited toxicity data available. Chemical hazard assessment traditionally utilizes mammalian models and can be both cost- and time-limiting and may pose ethical concerns. To rapidly tackle this...
Resource Type:: Dissertation
Full Text:: times and your never-ending encouragement is such a gift. To Wendy and Kelly, my OHS dog-walking

Semi-volatile organic compounds and developing organisms : accumulation in California mountain tadpoles in the field and fish embryo exposures in the laboratory

Creator:: Stanley, Kerri A.
Abstract:: The atmospheric transport and deposition of semi-volatile organic compounds (SOCs), including current and historic use pesticides, polychlorinated biphenyls (PCBs) and polycyclic aromatic hydrocarbons (PAHs), to mountain ecosystems may result in the exposure of tadpoles to these SOCs. This exposure has been implicated in amphibian population declines in California. Tadpoles encounter...
Resource Type:: Dissertation
Full Text:: Quarles, and Wendy Hillwalker, who have assisted me over the course of my studies; Rachel Huber for

Passive sampling devices as biological surrogates for evaluating seasonal bioavailability of hydrophobic organic contaminants in surface water

Creator:: Sethajintanin, Doolalai
Abstract:: The seasonal distribution of bioavailable organochiorine contaminants in surface water and the potential environmental factors influencing their bioavailability were evaluated. The study was carried at the lower Willamette River at Portland Harbor, Oregon where surface water runoff varied according to season. Bioavailable water concentrations of DDTs and PCBs were determined...
Resource Type:: Dissertation
Full Text:: Krissanakriangkrai, Lucas Quarles, and Dr. Wendy Hiliwalker. I am especially grateful to Eugene Johnson and Bobby

ScholarsArchive@OSU

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

Characterization of rodent selenoprotein W promoter

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

From pesticide degradation products to legacy toxicants and emerging contaminants : novel analytical methods, approaches, and modeling

Continuous monitoring and modeling to assess pesticide exposure in critical habitat for Pacific salmonids

Development of innovative applications for passive sampling devices : monitoring bioavailability, risk from exposure and environmental mixture toxicity

Long-term fertilizer input influences total and bioavailable metal in agricultural soils and crops

Advanced Approaches in Hazard Assessment of Polycyclic Aromatic Hydrocarbons Using Zebrafish

Semi-volatile organic compounds and developing organisms : accumulation in California mountain tadpoles in the field and fish embryo exposures in the laboratory

Passive sampling devices as biological surrogates for evaluating seasonal bioavailability of hydrophobic organic contaminants in surface water

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