Index Catalog // ScholarsArchive@OSU

The Effects of Biofilm on Sandy Soil Hydrology

Creator:: Runion, Danielle N.
Abstract:: It is known that soil biota affects water dynamics through various complex mechanisms. The impact on retention by soil biota are due to a combination of changes to pore geometry, pore clogging by biofilms, biofilms that serve to connect thin water films across many pores as the soil dries, and...
Resource Type:: Masters Thesis
Full Text:: : ______________________________________________________________ Maria I. Dragila

Evaporation synergy in a bi-textured soil system

Creator:: Fisher, Arthur J.
Abstract:: Evaporation synergy is the phenomenon in which two porous medium textures that share a common vertical boundary experience a higher cumulative evaporation than either homogeneous texture can produce. Studies that have been conducted to date address this phenomenon in relatively fine and coarse sands but not in finer textured soils...
Resource Type:: Masters Thesis
Full Text:: : Maria I. Dragila Evaporation synergy is the phenomenon in which two porous medium textures that share

Plot-Scale Field Investigation : Characterizing Water Motion in Sandy Agricultural Soils

Creator:: Nolasco, Stephanie M.
Abstract:: Irrigated agricultural production in sandy soils presents several unique challenges to growers, including naturally high permeability, low native water retention, as well as high rates of water drainage losses and leaching of chemicals to the shallow aquifers. This study is an initial investigation into water motion in the sandy agricultural...
Resource Type:: Masters Thesis
Full Text:: Abstract approved: ______________________________________________________ Maria I. Dragila

Solarization in the Pacific Northwest: A Mathematical Field Model for Accumulation of Linearized Mortality from Variable Intermittent Heat

Creator:: Hill, Brian C.
Abstract:: Soil solarization trials were conducted during the growing seasons of 2016-2018 with the purpose of determining if solarization was an effective pre-planting soil disinfestation technique for tree nurseries in the Pacific Northwest. A large data set was collected on soil properties and biological indicators from 5 interdisciplinary experiments. This thesis...
Resource Type:: Masters Thesis
Full Text:: : ______________________________________________________ Maria Ines Dragila Soil solarization trials were conducted during the growing seasons of 2016

Migration of E. coli and solutes to tile drains via preferential and matrix flow

Creator:: Moreno, Daniel
Abstract:: The extent of agricultural drainage has created concern for its potential undesirable effects on surface water quality. Land applications of liquid manure on tile drain fields have the potential to transport solutes and bacteria to the drains following precipitation or irrigation events and many times are directly sent to a...
Resource Type:: Masters Thesis
Full Text:: to Tile Drains via Preferential and Matrix Flow. Abstract approved: Maria I. Dragila The extent of

The effect of burrowing mammals on the hydrology of a drained riparian ecosystem

Creator:: Cassidy, James Richard
Abstract:: Many species of rodents and insectivores live in subterranean burrows in soils throughout the world. The soil surface perforations of burrow entrances are often connected to complex, subsurface tunnel networks. Burrow entrances and associated subsurface tunnel networks represent a link between surface and subsurface ecological function. Anecdotal observations of surface-water...
Resource Type:: Masters Thesis
Full Text:: Mammals on the Hydrology of a Drained Riparian Ecosystem. Abstract approved Maria I. Dragila Many

Calcium Ion Transport via Seeping Flow Events through Epikarst Microfissures

Creator:: Windom, Lisa M.
Abstract:: Solute transport models in karst groundwater must consider variable and complex flow regimes. Within fissures less than 2 mm in aperture, during unsaturated flow events, seeping flow may flow as films or under capillary tension as a capillary rivulet. This project focuses on exploring the mass transport characteristics of seeping...
Resource Type:: Masters Thesis
Full Text:: : ______________________________________________________ Maria Dragila John Selker Solute

A study of single-family residences in Corvallis, Oregon : identifying predisposing factors of declining residential exterior conditions

Creator:: Davila-Ash, Maria I.
Abstract:: Americans perceive renters as less interested and less vested in their residences than owner-occupants. These perceptions stem in part from historical and current day promotion of the homeownership tenure norm. Although this has achieved its main goal, that of reinforcing owner occupancy as the societal tenure norm, it has also...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Maria I. Davila-Ash for the degree

Evaporation from bare soil and soil cracks: a numeric study

Creator:: Graham, Christopher Brian
Abstract:: Evaporation from bare soil was investigated using a numeric model In one set of simulations, texture and evaporative demand were analyzed as they impacted short and long term evaporation. The effect of these factors on water redistribution was also analyzed. A second set of simulations was run to determine the...
Resource Type:: Masters Thesis
Full Text:: . Title: Evaporation from Bare Soil and Soil Cracks: A Numeric Study Abstract approved: Maria Ines

Oceanographic Drivers of Northern California Current Phytoplankton Communities and their Fatty Acid Composition: Implications for Northwest Fisheries

Creator:: Smoak, Rebecca T.
Abstract:: Micro-plankton are a crucial component of pelagic food webs, responding rapidly to environmental changes, and providing a first step in the acquisition and transfer of nutrients to life in the ocean. In addition to the uptake of carbon, phytoplankton provide essential fatty acids (FAs) that can limit the growth of...
Resource Type:: Masters Thesis
Full Text:: , my advisor, Dr. Maria Kavanaugh, thank you for believing in me. I find myself indebted to you for

ScholarsArchive@OSU

The Effects of Biofilm on Sandy Soil Hydrology

Evaporation synergy in a bi-textured soil system

Plot-Scale Field Investigation : Characterizing Water Motion in Sandy Agricultural Soils

Solarization in the Pacific Northwest: A Mathematical Field Model for Accumulation of Linearized Mortality from Variable Intermittent Heat

Migration of E. coli and solutes to tile drains via preferential and matrix flow

The effect of burrowing mammals on the hydrology of a drained riparian ecosystem

Calcium Ion Transport via Seeping Flow Events through Epikarst Microfissures

A study of single-family residences in Corvallis, Oregon : identifying predisposing factors of declining residential exterior conditions

Evaporation from bare soil and soil cracks: a numeric study

Oceanographic Drivers of Northern California Current Phytoplankton Communities and their Fatty Acid Composition: Implications for Northwest Fisheries

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