Index Catalog // ScholarsArchive@OSU

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:: Department of Environmental Quality (ODEQ) bird/mammal screening levels soil concentrations (mg metal

Influence of log truck traffic and road hydrology on sediment yield in western Oregon

Creator:: Miller, Rebecca H.
Abstract:: An understanding of the factors that influence surface erosion from roads is necessary to prevent and mitigate sediment production from forest roads. This study investigated the impacts of log truck traffic and road hydrology on sediment yield from ten forest road segments in the foothills of the Cascade Mountains of...
Resource Type:: Masters Thesis
Full Text:: surface of bare soil which is then subject to erosion from surface runoff and raindrop splash

Vegetation and soil response to tree removal methods in invasive western juniper woodlands

Creator:: O'Connor, Casey A.
Abstract:: On piñon-juniper encroached sites that lack the understory fuels to carry a prescribed fire, treatment options are limited to mechanical methods. Cutting with chainsaws and leaving the trees on site has been the primary treatment method for such sites, however this method creates a potential fire hazard, particularly in the...
Resource Type:: Masters Thesis
Full Text:: Rangeland Ecology and Management presented on June 19, 2009 Title: Vegetation and Soil Response to Tree

Ammonia-oxidizer and denitrifier populations in boreal forest soils of differing nitrogen availability

Creator:: Burton, Marci S.
Abstract:: Nitrification and denitrification are major biological processes transforming nitrogen (N) in soils to plant available N, highly leachable nitrate (NO₃⁻) and gaseous N oxides. Although many studies in the past have studied N cycling communities, the effect of increased N inputs on ammonia-oxidizer and denitrifier population dynamics is still under...
Resource Type:: Masters Thesis
Full Text:: ). Ammonia-oxidizing and denitrifying processes in soil are influenced by environmental factors, primarily

Assessing Soil Salinity from Produced Water Spills with Electromagnetic Induction : A Case Study on Cropland in Bottineau County, North Dakota

Creator:: Erickstad, Karen M.
Abstract:: Produced water is a highly saline waste product of oil and gas production, which is generated in larger volumes than the hydrocarbons themselves in the United States. Spillage of produced water is of concern because its high salinity can contaminate soil, surface water and groundwater resources, and kill vegetation, including...
Resource Type:: Masters Thesis
Full Text:: Karen M. Erickstad for the degree of Master of Science in Environmental Sciences presented on June 15

A study of residual Cesium 137 contamination in southwestern Utah soil following the nuclear weapons tests at the Nevada Test Site in the 1950's and 1960's

Creator:: Bentley, R. Blair
Abstract:: The Nevada Test Site (NTS) was the location for at least 100 above ground Nuclear Weapons tests during the 1950's and early 1960's. Radioactive fallout from these tests spread to many areas north and west of the NTS. According to estimates from the NCI and DOE, Washington County, Utah was...
Resource Type:: Masters Thesis
Full Text:: 28, 2008 Title: A Study of Residual Cesium 137 Contamination in Southwestern Utah Soil Following

Response of soil microbial communities to physical and chemical disturbances: implications for soil quality and land use sustainability

Creator:: Chaer, Guilherme M.
Abstract:: The objectives of this thesis were to evaluate the responses of soil microbial communities to physical and chemical disturbances, and associate these responses with soil functional stability and changes in soil quality. The first study consisted of application of heat shocks (HS) to soils with contrasting land use history to...
Resource Type:: Dissertation
Full Text:: environmental impacts. Applied Soil Ecology 16, 49-61. Griffiths, B.S., Ritz, K., Bardgett, R.D., Cook, R

Spatial and temporal effects of atmospheric deposition, climate, and land management on forest nutrient cycling and biodiversity

Creator:: McDonnell, Todd C.
Abstract:: Emissions largely associated with the combustion of fossil fuels and agriculture has caused elevated atmospheric deposition of nitrogen (N) and sulfur (S) throughout much of the developed world. Increased atmospheric deposition of N and S can lead to soil and surface water acidification and affect forest soil nutrient supply. The...
Resource Type:: Dissertation
Full Text:: the developed world. Increased atmospheric deposition of N and S can lead to soil and surface water

Physiochemical mechanisms for the transport and retention of technetium

Creator:: Jansik, Danielle P.
Abstract:: Understanding the transport and retention of radionuclides in the environment is important for protecting freshwater supplies and minimizing impact to biologic systems. Technetium-99 (Tc⁹⁹) is a radionuclide of interest due to its long half-life (2.13 x 10⁵ years) and toxicity. In the form of pertechnetate (TcO₄⁻), Tc is expected to...
Resource Type:: Dissertation
Full Text:: Philosophy in Environmental Engineering presented on January 11, 2013. Title: Physiochemical Mechanisms

Four centuries of soil carbon and nitrogen change after severe fire in a Western Cascades forest landscape

Creator:: Giesen, Thomas William
Abstract:: Fire is a major disturbance process in many forests. Long-term studies of the biogeochemical effects of fires, especially on soils, are very rare. Consequently, long-term effects of fire on soils are often hypothesized from short-term effects. In a chronosequence study, I studied 24 western Cascades (Oregon) forest stands thought to...
Resource Type:: Masters Thesis
Full Text:: , and through the effects of soil heating (DeBano et al. 1998, Neary et al. 1999, Certini 2005). The

ScholarsArchive@OSU

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

Influence of log truck traffic and road hydrology on sediment yield in western Oregon

Vegetation and soil response to tree removal methods in invasive western juniper woodlands

Ammonia-oxidizer and denitrifier populations in boreal forest soils of differing nitrogen availability

Assessing Soil Salinity from Produced Water Spills with Electromagnetic Induction : A Case Study on Cropland in Bottineau County, North Dakota

A study of residual Cesium 137 contamination in southwestern Utah soil following the nuclear weapons tests at the Nevada Test Site in the 1950's and 1960's

Response of soil microbial communities to physical and chemical disturbances: implications for soil quality and land use sustainability

Spatial and temporal effects of atmospheric deposition, climate, and land management on forest nutrient cycling and biodiversity

Physiochemical mechanisms for the transport and retention of technetium

Four centuries of soil carbon and nitrogen change after severe fire in a Western Cascades forest landscape

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