Index Catalog // ScholarsArchive@OSU

Measurement of Gas Exchange, Stream Metabolism, and Carbon Fluxes of Headwater Streams

Creator:: Pennington, Robert S.
Abstract:: Freshwater systems are an important component of the global carbon cycle as they outgas disproportionately large quantities of carbon compared to the terrestrial landscape. Of particular importance are headwater streams, which represent roughly 90% of the channel network by length and have been conservatively estimated to outgas roughly 36% of...
Resource Type:: Masters Thesis
Full Text:: Abstract approved: ______________________________________________________ Roy D. Haggerty

Hybridization between Castilleja levisecta and C. hispida : Implications for Pacific Northwest Prairie Management

Creator:: Sandlin, Isaac J., III
Abstract:: Conservation conflicts may develop on restoration sites with multiple species recovery objectives. For example, on Pacific Northwest prairies, the co-planting of the diploid cytotype of the common native wildflower Castilleja hispida with the endangered wildflower C. levisecta has resulted in putative Castilleja hybrids on restoration sites, prompting fears that genetic...
Resource Type:: Masters Thesis
Full Text:: Isaac Jerome Sandlin III for the degree of Master of Science in Botany and Plant Pathology presented on

Groundwater Flow Modeling at Santa Susana Field Laboratory

Creator:: Gardner, Gerrit T.
Abstract:: Understanding groundwater flow in faulted and fractured rock is an important frontier in the field of environmental remediation and in the management of water resources. One example of a site where this is particularly evident is the Santa Susana Field Laboratory (SSFL) in Ventura County, CA where environmental remediation activities...
Resource Type:: Masters Thesis
Full Text:: : ______________________________________________________ Roy Haggerty Understanding groundwater flow in faulted and fractured rock is an

An analysis of tree maintenance responsibility in California municipalities – do tree ordinances help or hinder urban tree canopy distribution?

Creator:: Franco, Yael
Abstract:: As urban populations increase, the presence of well-maintained trees provide a cost-effective solution to combat the effects of climate change, specifically the urban heat island effect. Unfortunately, the associated ecological, social and economic benefits of trees are not distributed equitably in the landscape due to lingering effects of redlining policies....
Resource Type:: Capstone Project

Temporal and spatial variability of groundwater nitrate in the southern Willamette Valley of Oregon

Creator:: Mutti, Jeffrey Glenn
Abstract:: Groundwater nitrate contamination is a well-documented issue in the Southern Willamette Valley (SWV) of Oregon, as a Groundwater Management Area (GWMA) has recently been declared. As a GWMA, groundwater nitrate monitoring must occur until regional concentrations are below 7 mg/L NO3-N. However, the presence of temporal variability can make it...
Resource Type:: Masters Thesis
Full Text:: Oregon Abstract approved: Roy D. Haggerty Groundwater nitrate contamination is a well

Application of ultrasonic welding to the rapid prototyping of microfluidic systems for biotechnology

Creator:: Aramphongphun, Chuckaphun
Abstract:: This paper introduces an alternative technique for the development of microfluidic systems for biotechnology based on mechanical machining and ultrasonic welding. Advantages of this approach over existing prototyping approaches involving the rapid development of tooling include: (a) short cycle time, (b) design flexibility, and (c) low cost manufacturing. In addition,...
Resource Type:: Masters Thesis
Full Text:: K. Paul This paper introduces an alternative technique for the development of microfluidic systems

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:: – Ground Water Interface. Abstract approved: Roy D. Haggerty The feedbacks between

Changes in hyporheic exchange flow following experimental large wood removal in a second order, low gradient stream, Chichagof Island, AK

Creator:: La Nier, Justin
Abstract:: Hyporheic Exchange Flow (HEF) is driven by head gradients defined by the hydro-topography of the stream surface, which is controlled by the particular geomorphology of the stream. We quantified the impact of large wood, which typically exerts a strong control on stream morphology, on HEF in a second order, low...
Resource Type:: Masters Thesis
Full Text:: : ________________________________________________________________________ Roy D. Haggerty Hyporheic Exchange Flow (HEF) is driven by head gradients defined by the

A preliminary assessment of hydrogeologic suitability for Aquifer Storage and Recovery (ASR) in Oregon

Creator:: Woody, Jen
Abstract:: An ASR metric and site rating index applied to over 120 municipal and agricultural locations across Oregon, combined with comparison to case study data from existing ASR sites, indicate that more than 50% of selected sites are hydrogeologically suitable for ASR. The ASR metric is a ratio of aquifer storage...
Resource Type:: Masters Thesis
Full Text:: Abstract approved: Dr. Roy Haggerty An ASR metric and site rating index applied to over 120

Hydrogeologic field investigation and groundwater flow model of the southern Willamette Valley, Oregon

Creator:: Craner, Jeremy D.
Abstract:: Elevated groundwater nitrate (NO3 -) concentrations in the Southern Willamette Valley (SWV) caused the Oregon Department of Environmental Quality (ODEQ) to declare a Groundwater Management Area (GWMA) in Spring, 2004. To better understand direction of groundwater flow, groundwater age, and nitrate transport pathways of the SWV we developed a steady-state...
Resource Type:: Masters Thesis
Full Text:: Southern Willamette Valley, Oregon. Abstract approved: Roy Haggerty Elevated

ScholarsArchive@OSU

Measurement of Gas Exchange, Stream Metabolism, and Carbon Fluxes of Headwater Streams

Hybridization between Castilleja levisecta and C. hispida : Implications for Pacific Northwest Prairie Management

Groundwater Flow Modeling at Santa Susana Field Laboratory

An analysis of tree maintenance responsibility in California municipalities – do tree ordinances help or hinder urban tree canopy distribution?

Temporal and spatial variability of groundwater nitrate in the southern Willamette Valley of Oregon

Application of ultrasonic welding to the rapid prototyping of microfluidic systems for biotechnology

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

Changes in hyporheic exchange flow following experimental large wood removal in a second order, low gradient stream, Chichagof Island, AK

A preliminary assessment of hydrogeologic suitability for Aquifer Storage and Recovery (ASR) in Oregon

Hydrogeologic field investigation and groundwater flow model of the southern Willamette Valley, Oregon

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