Index Catalog // ScholarsArchive@OSU

Heat balance of alcoves on the Willamette River, Oregon

Creator:: Bryenton, Andrew G.
Abstract:: Alcoves in some river systems are cooler than the mainstem of the river and provide thermal refugia for aquatic species. An energy balance and sensitivity analysis on 3 alcoves in the Willamette River, Oregon indicate that alcove size and alcove flux determine the degree to which meteorological conditions affect the...
Resource Type:: Masters Thesis

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

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

Dynamics of the Laurentide Ice Sheet

Creator:: Carlson, Anders Eskil
Abstract:: This dissertation concentrates on the controlling factors on the instability of the Laurentide Ice Sheet (LIS) and their effects on abrupt climate change. Northern Hemisphere climate fluctuated abruptly during the last deglaciation possibly related to variability in Atlantic meridional overturning circulation (AMOC) and reduced aerial extent of the LIS. Reductions...
Resource Type:: Dissertation
Full Text:: interest, support and constructive criticism: Roy Haggerty, Andrew Meigs, Alan Mix, and Herbert

Investigation of the hydraulic, physical, and chemical buffering capacity of Missoula Flood Deposits for water quality and supply in the Willamette Valley of Oregon

Creator:: Iverson, Justin
Abstract:: The Willamette Silt is a surficial geologic unit composed of successive Missoula Flood Deposits that underlies 3100 km2 (1200 mil) of arable land in the Willamette Valley of Oregon. The Willamette Silt protects the underlying regionally important Willamette Aquifer from agricultural contamination while acting as a semi-confining unit and a...
Resource Type:: Masters Thesis
Full Text:: , Roy Haggerty, Lew Semprini, Andrew Meigs, and Herbert Huddleston, for their comments and constructive

Patterns and processes of sediment transport following sediment-filled dam removal in gravel bed rivers

Creator:: Stewart, Gregory B.
Abstract:: Dam removal is increasingly viewed as a river restoration tool because dams affect so many aspects of river hydrology, geomorphology, and ecology; but removal also has impacts. When a dam is removed, sediment accumulated over a dam’s lifetime may be transported downstream; and the timing, fate and consequences of this...
Resource Type:: Dissertation
Full Text:: macroinvertebrate sampling and who identified the majority of the invertebrates. Roy Haggerty and Jeff McDonnell

Ultraviolet radiation as an environmental stressor of amphibians

Creator:: Bancroft, Betsy A.
Abstract:: My thesis explored the effects of and potential mediating mechanisms for an important environmental stressor, ultraviolet-B (UVB) radiation. UVB radiation has negative effects on organisms in both terrestrial and aquatic systems. I used meta-analysis to quantify the effects of UVB radiation on a diversity of aquatic organisms (Chapter 2). UVB...
Resource Type:: Dissertation
Full Text:: Abstract approved: Andrew R. Blaustein My thesis explored the effects of and potential mediating

The value of recurring intradisciplinary meetings for preventing stagnation in natural resources education

Creator:: Loewenstein, Edward F., Lockhart, Brian Roy, Long, James N., and Ezell, Andrew W.
Abstract:: Most of the forces in academia work to develop highly specialized individuals. Training comes primarily from a single person, the dissertation advisor. Detailed field study of various forest types or physiographic provinces is often limited to where we trained and where we work (sometime both are in the same location...
Resource Type:: Presentation

Opportunities and limitations in teaching forest resource continuing education : experiences with southern bottomland hardwood workshops and shortcourses (an update)

Creator:: Lockhart, Brian Roy, Ezell, Andrew W., and Hodges, John D.
Abstract:: Presented at the 7th Biennial Conference on University Education in Natural Resources. March 13-15, 2008, Corvallis, Oregon.
Resource Type:: Presentation

Hydro-biogeochemical coupling at the hillslope and catchment scale

Creator:: van Verseveld, Willem J.
Abstract:: The specific objectives of this dissertation are to determine subsurface flow behaviors across different antecedent wetness conditions from a top-down perspective and to mechanistically assess the hydrological controls on DOC and N transport at the hillslope and catchment scale. The study area is a small catchment where hillslopes issue directly...
Resource Type:: Dissertation

ScholarsArchive@OSU

Heat balance of alcoves on the Willamette River, Oregon

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

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

Dynamics of the Laurentide Ice Sheet

Investigation of the hydraulic, physical, and chemical buffering capacity of Missoula Flood Deposits for water quality and supply in the Willamette Valley of Oregon

Patterns and processes of sediment transport following sediment-filled dam removal in gravel bed rivers

Ultraviolet radiation as an environmental stressor of amphibians

The value of recurring intradisciplinary meetings for preventing stagnation in natural resources education

Opportunities and limitations in teaching forest resource continuing education : experiences with southern bottomland hardwood workshops and shortcourses (an update)

Hydro-biogeochemical coupling at the hillslope and catchment scale

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