Index Catalog // ScholarsArchive@OSU

Hydrological and biogeochemical dynamics of nitrate production and removal at the stream – ground water interface

Creator:: Zarnetske, Jay P.
Abstract:: The feedbacks between hydrology and biogeochemical cycling of nitrogen (N) are of critical importance to global bioavailable N budgets. Human activities are dramatically increasing the amount of bioavailable N in the biosphere, which is causing increasingly frequent and severe impacts on ecosystems and human welfare. Streams are important features in...
Resource Type:: Dissertation
Full Text:: . Title: Hydrological and Biogeochemical Dynamics of Nitrate Production and Removal at the Stream

Analysis of Oregon's Domestic Well Testing Act data for use in a sentinel surveillance system for private well contaminants

Creator:: Hoppe, Brenda O.
Abstract:: The Safe Drinking Water Act ensures that public systems provide water that meets health standards. However, no such protection exists for millions of Americans who obtain water from private wells. Concern for safety is warranted as most wells draw from underground aquifers, and studies demonstrate that groundwater is affected by...
Resource Type:: Dissertation
Full Text:: – INTRODUCTION………………………………................. 1 Private Wells and Nitrate Contamination in Oregon………………… 8

The Effects of Nitrate and a Pathogenic Fungus, Batrachochytrium dendrobatidis, on Amphibians

Creator:: Negru, Delia
Abstract:: The current rate of global biodiversity loss and extinctions is unparalleled and a major concern. Freshwater organisms are facing particularly rapid rates of biodiversity loss. Amphibians, which require an aquatic environment for part of their life cycle, are one of the most vulnerable vertebrate groups. Amphibians are experiencing population declines,...
Resource Type:: Masters Thesis
Full Text:: ubiquitous environmental contaminant, nitrate, can increase mortality when larval amphibians are exposed to

Investigation of the environmental impact of wind energy and supplemental energy systems using a life cycle approach

Creator:: Prempreeda, Preedanood
Abstract:: Wind energy is a promising alternative energy source due to its environmental, economic, and social benefits and, as such, has garnered public support and government incentives for its development and implementation. With the growing number of wind parks in Oregon, a life cycle assessment (LCA) study for a representative new...
Resource Type:: Masters Thesis
Full Text:: Conclusion………………………………………………………………...45 CHAPTER 4 ENVIRONMENTAL IMPACT OF WIND ENERGY IN NORTHERN OREGON

Non-target Effects of Biological Control: Ecological Risk of Tyria jacobaeae (Lepidoptera: Erebidae) to Senecio triangularis (Asteraceae) in Western Oregon

Creator:: Rodman, Madison G.
Abstract:: Non-target effects are one of the greatest potential risks of weed biological control programs, and understanding non-target effects of biological control at the population level is crucial for predicting when they will occur and altering the perception of biological control as a whole. In this thesis, we assessed the ecological...
Resource Type:: Masters Thesis
Full Text:: : Erebidae) to Senecio triangularis (Asteraceae) in Western Oregon Abstract approved

Effect of livestock grazing on native bees in a Pacific Northwest bunchgrass prairie

Creator:: Kimoto, Chiho
Abstract:: Native bees play an important role as pollinators of natural vegetation and agricultural crops. Yet many pollinators, including some native bees, are declining in numbers. Some of the potential causes of these declines are habitat destruction and degradation by various human land uses, including urban development and sprawl, construction of...
Resource Type:: Masters Thesis
Full Text:: objectives: 1) describe the native bee community in the Zumwalt Prairie in northeastern Oregon, which is

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:: Yield in Western Oregon AN ABSTRACT OF THE THESIS OF Rebecca H. Miller for the

Development and decommissioning of small dams : analysis of impact and context

Creator:: Kibler, Kelly Maren
Abstract:: Management of small dams may have profound implications for the health and integrity of small rivers and freshwater diversity. Global indicators suggest future growth in the small hydropower sector, particularly in developing countries. As a renewable energy source, it is often presumed that small hydropower entails fewer and less severe...
Resource Type:: Dissertation
Full Text:: , streamlined permitting processes, relaxed requirements for environmental impact assessment and

Reallocating resources, rebuilding community : the Klamath Basin agreements and the emergence of adaptive governance

Creator:: Chaffin, Brian C.
Abstract:: The concept of "adaptive governance" represents a spectrum of hybrid approaches to environmental governance employed to guide management of complex social-ecological systems under conditions of high uncertainty. While the concept of adaptive governance has benefited from over a decade of theoretical development, empirical examples of transitions towards adaptive governance are...
Resource Type:: Dissertation
Full Text:: a spectrum of hybrid approaches to environmental governance employed to guide management of

Sediment Pulse Behavior in Gravel-bedded Rivers

Creator:: Pace, Kylie M.
Abstract:: As dams approach the end of their useful life, there is need to predict where and how accumulated sediment will move following their removal to estimate impacts on aquatic habitat and infrastructure. Flume studies suggest that sediment pulses disperse in place for most dams, but it is hypothesized that a...
Resource Type:: Masters Thesis
Full Text:: .!Pace! ! ! ! ! A!THESIS! ! submitted!to! ! Oregon!State!University! ! ! ! ! in!partial

ScholarsArchive@OSU

Hydrological and biogeochemical dynamics of nitrate production and removal at the stream – ground water interface

Analysis of Oregon's Domestic Well Testing Act data for use in a sentinel surveillance system for private well contaminants

The Effects of Nitrate and a Pathogenic Fungus, Batrachochytrium dendrobatidis, on Amphibians

Investigation of the environmental impact of wind energy and supplemental energy systems using a life cycle approach

Non-target Effects of Biological Control: Ecological Risk of Tyria jacobaeae (Lepidoptera: Erebidae) to Senecio triangularis (Asteraceae) in Western Oregon

Effect of livestock grazing on native bees in a Pacific Northwest bunchgrass prairie

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

Development and decommissioning of small dams : analysis of impact and context

Reallocating resources, rebuilding community : the Klamath Basin agreements and the emergence of adaptive governance

Sediment Pulse Behavior in Gravel-bedded Rivers

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