Index Catalog // ScholarsArchive@OSU

Characterizing grapevine canopy architecture

Creator:: Navarrete, Alejandra
Abstract:: Vertically shoot positioned (VSP) training systems are common in Oregon's Willamette Valley, where deep fertile soils and high regional precipitation task growers with curbing vegetative vigor within this system. Management strategies, such as canopy hedging and cluster-zone leaf removal, are used to improve microclimate within the canopy and around the...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Alejandra Navarrete for the

Physiological impacts of groundwater and surface water application on desert graminoids of different geographic origin

Creator:: Abdallah, Mohamed (Mohamed Ahmed B.)
Abstract:: Desert plant communities are among the most sensitive to changes in soil water conditions. In areas with shallow aquifers, it is important to understand both the effects of groundwater alterations on vegetation and how changes in surface-soil water affect plant water uptake. Studies in arid environments have evaluated the effect...
Resource Type:: Masters Thesis
Full Text:: : Ricardo Mata-Gonzalez Desert plant communities are among the most sensitive to changes in soil water

Aspen Drought Stress Response, Snow Cover and Soil Moisture Dynamics on an Oregon Bunchgrass Prairie

Creator:: Neary, Andrew
Abstract:: Quaking aspen, Populus tremuloides, has experienced severe declines in recent years in part due to the effects of changing climate and extreme drought. As the dominant deciduous tree in Western North American forests, aspen plays a critical role in forest biodiversity and ecosystem function. Therefore, the persistence of this species...
Resource Type:: Masters Thesis
Full Text:: : _____________________________________________________________________ Ricardo Mata-Gonzalez Quaking aspen, Populus tremuloides, has experienced severe declines

Restoration of Annual Grass-invaded Landscapes in the Sagebrush Steppe using Perennial Grass Seed Technologies and Wyoming Big Sagebrush Transplanting

Creator:: Holfus, Corinna M.
Abstract:: Within the sagebrush steppe ecosystem, invasive annual grasses are of growing management concern as they outcompete native vegetation, change the fundamental nutrient cycling processes, decrease biodiversity, and increase frequency of wildfires. The most widely used and effective management tool to decrease invasive annual grass abundance, is the use of pre-emergent...
Resource Type:: Masters Thesis
Full Text:: : ______________________________________________________ Chad S. Boyd Ricardo Mata-González Within the sagebrush steppe ecosystem, invasive

Grazing Effects on Fuels and Plant Community Characteristics across Three Community Types in Wyoming Big Sagebrush Steppe

Creator:: Thomas, Tyler W.
Abstract:: Livestock grazing is the prominent land use in Wyoming big sagebrush (Artemisia tridentata ssp. wyomingensis [Beetle & A. Young] S.L. Welsh) steppe and has been present since the late 1800’s. There have been calls to remove livestock grazing from rangelands as historic grazing practices resulted in the degradation of some...
Resource Type:: Masters Thesis
Full Text:: : ______________________________________________________ Kirk W. Davies Ricardo Mata-Gonzalez Livestock grazing is the prominent land use in

The Ecological Recovery of Saguaro National Park after Removal of Cattle Grazing and Associated Succession

Creator:: Summers, Ryan J.
Abstract:: In the area that is now Saguaro National Park East, grazing began in the 1880's. Because of the impact to the iconic saguaro cactus as well as all palatable plant species in the area, ecological damage in the park were determined to be so great that anti-grazing conservationists challenged the...
Resource Type:: Masters Thesis
Full Text:: Ricardo Mata-Gonzalez Abstract In the area that is now Saguaro National Park East, grazing began in

Establishing suitability of an ocean model for a poleward undercurrent study

Creator:: Duran, Rodrigo
Abstract:: Modifications of an ocean model are described, as the objective for which the model was used changed to study the kinematics and dynamics of an eastern-boundary poleward undercurrent.
Resource Type:: Capstone Project
Full Text:: Rodrigo Duran 1 Advisor: Prof. Roger M. Samelson Committee: Prof. Ricardo Matano and Dr. David Rivas

Nitrogen isotopes in a global ocean biogeochemical model : constraints on the coupling between denitrification and nitrogen fixation

Creator:: Somes, Christopher J.
Abstract:: We present a new nitrogen isotope model incorporated into the three-dimensional ocean component of a global Earth System Climate Model designed for millennial timescale simulations. The model includes prognostic tracers for the stable nitrogen isotopes, ¹⁴N and ¹⁵N, in the nitrate (NO₃ˉ), phytoplankton, zooplankton, and detritus variables of the marine...
Resource Type:: Masters Thesis
Full Text:: invaluable to my growth as a scientist. I would like to thank my committee members Alan Mix and Ricardo

Development of baseline data on Oregon's high desert vernal pools

Creator:: Wyland, Sara Alice
Abstract:: Vernal pools are ephemeral surface water wetlands with unique hydrology, ecology and species composition. Rare and endemic species rely on vernal pool habitat due to specialization traits the species possess because they are adapted to the extreme conditions. Many vernal pool basins have been topographically and hydrologically altered and are...
Resource Type:: Masters Thesis
Full Text:: members, Dr. Paul Adamus and Dr. Ricardo Mata-Gonzalez, for honoring me with their time, expertise and

Functional groups, traits, and the performance of species in restoration

Creator:: Roberts, Rachael E. (Rachael Elaine)
Abstract:: In ecological restoration, species that are sown to increase the native plant diversity range in establishment ability. Some species readily establish, while others rarely do. This study set out to investigate some of the potential processes influencing species establishment, as well as the traits that are associated with the success...
Resource Type:: Masters Thesis
Full Text:: members of my committee, Eric Seabloom and Ricardo Letelier also provided great suggestions and helped

ScholarsArchive@OSU

Characterizing grapevine canopy architecture

Physiological impacts of groundwater and surface water application on desert graminoids of different geographic origin

Aspen Drought Stress Response, Snow Cover and Soil Moisture Dynamics on an Oregon Bunchgrass Prairie

Restoration of Annual Grass-invaded Landscapes in the Sagebrush Steppe using Perennial Grass Seed Technologies and Wyoming Big Sagebrush Transplanting

Grazing Effects on Fuels and Plant Community Characteristics across Three Community Types in Wyoming Big Sagebrush Steppe

The Ecological Recovery of Saguaro National Park after Removal of Cattle Grazing and Associated Succession

Establishing suitability of an ocean model for a poleward undercurrent study

Nitrogen isotopes in a global ocean biogeochemical model : constraints on the coupling between denitrification and nitrogen fixation

Development of baseline data on Oregon's high desert vernal pools

Functional groups, traits, and the performance of species in restoration

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