Index Catalog // ScholarsArchive@OSU

Field management effects on the thermal stability and activity of soil enzymes in whole soil and aggregates

Creator:: Bandick, Anna Katrina
Resource Type:: Masters Thesis
Full Text:: approved: Richard P. Dick Activities of 11 enzymes were measured on samples collected from two

Winter cover cropping effects on integrative biological indicators of soil quality

Creator:: Ndiaye, Evelyne L.
Abstract:: Responses of biological indicators of soil quality to winter cover cropping were measured on soil samples collected from 6 commercial growers' fields and two experiment research stations in the Willamette Valley of Oregon. The research stations were the North Willamette Research and Extension Center (Aurora, OR), and the Oregon State...
Resource Type:: Masters Thesis
Full Text:: Integrative Biological Indicators of Soil Quality Abstract approved: Richard P. Dick Responses of

Determinants of microbial community structure and substrate utilization potential in soils of vegetable cropping systems

Creator:: Schutter, Mary E.
Abstract:: The Oregon Long-Term Soil Quality Project was initiated to identify soil properties that respond rapidly to alternative management practices. Such practices included winter cover cropping, which was implemented at two experimental research stations and several grower fields throughout the Willamette Valley. The goal of this thesis was to identify the...
Resource Type:: Dissertation
Full Text:: approved: Richard P. Dick The Oregon Long-Term Soil Quality Project was initiated to identify soil

Interspecific carbon transfer in ectomycorrhizal tree species mixtures

Creator:: Simard, S. (Suzanne)
Abstract:: The overall goal of this study was to investigate influences of ectomycorrhizae (EM) and interspecific carbon transfer on seedling performance in species mixtures. The objectives were to: (I) determine the potential for EM to link paper birch and Douglas-fir, (ii) quantify gross and net interspecific carbon transfer, and (iii) evaluate...
Resource Type:: Dissertation

Top-Down Effects of Wildlife and Bottom-Up Drivers of Soils and Productivity in Intensively Managed Forest Plantations in the Northern Oregon Coast Range

Creator:: Frey, David W.
Abstract:: In intensively managed forest plantations in the northern Oregon Coast Range, herbicides are often applied during site preparation and early stand regeneration to reduce competition for resources for planted conifer seedlings. In addition to reducing competition for crop trees, herbicide applications may affect soil processes including decomposition and nutrient cycling,...
Resource Type:: Masters Thesis
Full Text:: THESIS OF David Frey for the degree of Master of Science in Sustainable Forest Management

High Strength Reinforcing Bars : Concrete Shear Friction Interface Behavior

Creator:: Nielson, Drew R.
Abstract:: Use of high-strength steel (HSS) reinforcing bars could provide constructability and economic benefits for the construction of structures, reducing the initial and ultimately the life-cycle cost of bridge and building structural elements. This thesis summarizes work performed in a research project on the use of HSS reinforcing bars for concrete...
Resource Type:: Masters Thesis
Full Text:: : High Strength Reinforcing Bars: Concrete Shear Friction Interface Behavior Abstract approved: David

Ecology and applications of cutaneous mechanisms of resistance to amphibian chytridiomycosis

Creator:: Nebergall, Emily E.
Abstract:: Amphibian biodiversity is in rapid global decline, due in part to the fungal disease chytridiomycosis, caused by Batrachochytrium dendrobatidis (Bd). Susceptibility to Bd and chytridiomycosis varies between species and populations. Skin peptides and symbiotic skin bacteria appear to be important mechanisms of Bd resistance. However, not much is known about...
Resource Type:: Masters Thesis
Full Text:: experimental bioaugmentation agent. I tested P. fluorescens alongside Janthinobacterium lividum in Bd

Land surface energy balance and surface soil moisture variation in HAPEX-MOBILHY

Creator:: Nichols, William E.
Abstract:: The HAPEX-MOBILHY regional experiment provided an significant opportunity to analyze the partition of energy and distribution of water over land surfaces. The combination of remotely sensed data and ground instrument networks over the large-scale in situ experiment allowed investigation of spatial and temporal variation of such hydrologic parameters as the...
Resource Type:: Masters Thesis
Full Text:: . David Myrold, and Dr. David Thomas, all merit appreciation for their time and suggestions. Thanks are

Data assessment in Oregon for SafetyAnalyst based on Highway Safety Manual Part B

Creator:: Li, Meng
Abstract:: The author of the Highway Safety Manual (HSM) Part B developed a predictive method for safety management. A software tool for highway safety system analysis called the SafetyAnalyst is developed basing on HSM Part B. The author describes an effort to evaluate the feasibility of SafetyAnalyst in Oregon. Seven sample...
Resource Type:: Masters Thesis

Environmental Stressors Influence Fabaceae Seedling Development

Creator:: Gerber, Kaitlin A.
Abstract:: Sites in need of restoration typically have one or more environmental factors that limit seedling establishment; identifying ecophysiological responses to environmental stressors can be advantageous in growing seedlings able to overcome such constraints on survival. To maximize survival after outplanting, seedlings should be grown in a manner that considers both...
Resource Type:: Masters Thesis
Full Text:: . The first study examined how koa seedlings responded to reduced water (W), reduced phosphorus (P

ScholarsArchive@OSU

Field management effects on the thermal stability and activity of soil enzymes in whole soil and aggregates

Winter cover cropping effects on integrative biological indicators of soil quality

Determinants of microbial community structure and substrate utilization potential in soils of vegetable cropping systems

Interspecific carbon transfer in ectomycorrhizal tree species mixtures

Top-Down Effects of Wildlife and Bottom-Up Drivers of Soils and Productivity in Intensively Managed Forest Plantations in the Northern Oregon Coast Range

High Strength Reinforcing Bars : Concrete Shear Friction Interface Behavior

Ecology and applications of cutaneous mechanisms of resistance to amphibian chytridiomycosis

Land surface energy balance and surface soil moisture variation in HAPEX-MOBILHY

Data assessment in Oregon for SafetyAnalyst based on Highway Safety Manual Part B

Environmental Stressors Influence Fabaceae Seedling Development

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