Index Catalog // ScholarsArchive@OSU

The relationship of exchange acidity and exchangeable aluminum in limed and unlimed profile samples of soil from western Oregon to the yield and chemical composition of alfalfa

Creator:: Janghorbani, Morteza
Abstract:: Acidity distribution within any given soil profile is dependent on mineralogical make-up of the parent material as well as environmental conditions prevalent during the weathering history of the soil. An experiment was designed to study the distribution pattern of exchange acidity, exchangeable aluminum, exchangeable manganese and pH of six acid...
Resource Type:: Masters Thesis
Full Text:: WESTERN OREGON TO THE YIELD AND CHEMICAL COMPOSITION OF ALFALFA Abstract approved Steve Roberts

The effects of external salinity on carbon dioxide incorporation into free amino acids in Artemia nauplii

Creator:: Carpenter, John Frank
Abstract:: In Artemia salina nauplii acclimated in 0.25 M, 0.5 M, 1.0 M, 1.5 M, 2.0 M, and 2.5 M NaCl incorporation of ¹⁴CO₂ into free amino acids was greatly stimulated in the higher salinities. The ¹⁴C label was found in aspartic acid, serine, glutamic acid, proline and alanine. Hypersalinity also...
Resource Type:: Masters Thesis
Full Text:: grateful to Steve Hand and Joel Lowy for their assistance in lab and critical evaluations of proposed

Species Distribution Modeling of Citizen Science Data as A Classification Problem with Class-Conditional Label Noise

Creator:: He, Liqiang
Abstract:: Species distribution models (SDM), which quantify the correlation between the distribution of a species and environmental factors, are increasingly used to map and monitor animal and plant distributions in the context of awareness of environmental change and its ecological consequence. For perfect data, this is a straightforward classification problem from...
Resource Type:: Masters Thesis
Full Text:: gratitude to Dr. Sarah C. Emerson for the guidance and collaboration for my research. I would like to

Spreadsheet Explanation Through Table Abstraction

Creator:: Dan, Mihai
Abstract:: Spreadsheets are a pervasive technology throughout personal and industrial use. Often times, the user is not the author, contributing to a lack of understanding of the purpose and functionality of a spreadsheet. Furthermore, the lack of understanding is a major reason for mistakes in the use and maintenance of spreadsheets....
Resource Type:: Masters Thesis

Susceptibility of Pacific yew (Taxus brevifolia Nutt.) to Phytophthora lateralis

Creator:: Murray, Marion S.
Abstract:: In 1991 Pacific yew (Taxus brevifolia Nutt.) was reported as a new host for Phytophthora lateralis Tucker and Milbrath which is an aggressive root rot pathogen thought previously to be specific to Port-Orford-cedar. This study was designed to compare the pathogenicity of P. lateralis on the two hosts, and to...
Resource Type:: Masters Thesis
Full Text:: , OR, for sharing some of her Pacific yew seedlings and cuttings, and to Steve Feigner at Stone

Atlantic Puffin (Fratercula arctica) Foraging Ecology During Marine Heatwave Conditions

Creator:: Kennerley, William L.
Abstract:: Marine heatwaves (“MHWs”) are discrete periods of anomalously warm ocean conditions that can lead to shifts in the distribution and abundance of marine organisms. Low-trophic level, pelagic forage species are frequently among those affected by MHWs, often resulting in considerable impacts upon their predators. In the North Atlantic Ocean, Atlantic...
Resource Type:: Masters Thesis
Full Text:: my life in the best possible way. Thanks so much to Don Lyons, Steve Kress, Paula Shannon, Sue

Decomposition of organic matter in estuarine sediments by sulfate reduction : a field study from Yaquina Bay and sediment incubation experiments

Creator:: Powell, Heidi Sara
Resource Type:: Masters Thesis
Full Text:: , Steve Davis, Russ Flegal, Robin Brown, and Gary Hewitt for historical reasons. Mitch Lyle's office

The Response of Ventenata dubia to Prescribed Fire and Ungulate Grazing on the Pacific Northwest Bunchgrass Prairie

Creator:: Ridder, Luke W.
Abstract:: Ventenata dubia L. (ventenata) is an introduced, winter annual grass that has recently been raising concerns across the Pacific Northwest Bunchgrass Prairie and the Palouse Prairie. It is well established now in pasturelands, croplands, and a variety of ecosystems including grasslands, sagebrush steppe, ponderosa pine forests and woodlands. Ventenata is...
Resource Type:: Masters Thesis
Full Text:: Rygg, and Katie Emerson for assisting me with field sampling and data input. Finally, I would like to

Sharing the land : a 5th and 6th grade curricular unit for Minto-Brown Island Park, Salem, Oregon

Creator:: Hanson, Mette J.
Abstract:: The lack of first-hand experience or knowledge about farming in the general population of the United States is a concern among scientists as many current environmental issues are strongly linked to agriculture. Developing agricultural literacy and an appreciation for our dependance on limited resources is important for preparing future generations...
Resource Type:: Masters Thesis
Full Text:: Steve and Chiska, for their patience and encouragement while I devoted myself to this project. TABLE

Mental and biophysical terrains of biodiversity : conservation of oak woodland on family forest

Creator:: Fischer, Alexandra Paige
Abstract:: This research analyzes how family forest owners conceptualize biodiversity in one high-conservation value area of oak woodland in the Willamette Valley of Western Oregon. Oregon white oak (Quercus garyanna) woodland, one of the most biologically diverse ecotypes in the state of Oregon, is in decline. Much of the oak ecotype...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

The relationship of exchange acidity and exchangeable aluminum in limed and unlimed profile samples of soil from western Oregon to the yield and chemical composition of alfalfa

The effects of external salinity on carbon dioxide incorporation into free amino acids in Artemia nauplii

Species Distribution Modeling of Citizen Science Data as A Classification Problem with Class-Conditional Label Noise

Spreadsheet Explanation Through Table Abstraction

Susceptibility of Pacific yew (Taxus brevifolia Nutt.) to Phytophthora lateralis

Atlantic Puffin (Fratercula arctica) Foraging Ecology During Marine Heatwave Conditions

Decomposition of organic matter in estuarine sediments by sulfate reduction : a field study from Yaquina Bay and sediment incubation experiments

The Response of Ventenata dubia to Prescribed Fire and Ungulate Grazing on the Pacific Northwest Bunchgrass Prairie

Sharing the land : a 5th and 6th grade curricular unit for Minto-Brown Island Park, Salem, Oregon

Mental and biophysical terrains of biodiversity : conservation of oak woodland on family forest

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