Index Catalog // ScholarsArchive@OSU

Reconnaissance botany of alpine ecosystems on Prince of Wales Island, southeast Alaska

Creator:: Jaques, Dennis Randall
Abstract:: A study of the Prince of Wales Island alpine areas was undertaken to determine what species occur in the region and to describe plant communities making up the alpine vegetation. For one month in 1972, specimens were collected and 78 micro-plots were analyzed for cover, frequency and constancy data. Three...
Resource Type:: Masters Thesis

Biology of the two external Acarapis species of honey bees : Acarapis dorsalis Morgenthaler and Acarapis externus Morgenthaler (Acari: Tarsonemidae)

Creator:: Ibay, Lilia Armendez
Abstract:: The biology of the two external Acarapis mites of honey bees, Acarapis dorsalis Morgenthaler and Acarapis externus Morgenthaler was studied. It was observed that both Acarapis species have similar developmental period (8-9 days) with males emerging earlier than females. Mite load and infestation rate of A. dorsalis decreased as bees...
Resource Type:: Masters Thesis
Full Text:: privacy Ur. Dennis Michael Burgett The biology of the two external Acarapis mites of honey bees

Fish and amphibian use of intermittent streams within the upper Willamette Basin, Oregon

Creator:: Colvin, Randall William
Abstract:: In the fall through spring of 2002/03 and 2003/04, the composition of fish and amphibian communities were examined in intermittent streams in the upper Willamette river basin in western Oregon. I recorded standard aquatic habitat variables and water nutrient concentrations (nitrate and phosphate) and correlated them with fish and amphibian...
Resource Type:: Masters Thesis
Full Text:: Randall William Colvin for the degree of Master of Science in

An ecosystem service approach to inform reactive nitrogen management in the lower Yakima River Basin, Washington

Creator:: Crowell, Morgan
Abstract:: Spatially explicit ecosystem service valuation (ESV) allows for the identification of the location and magnitude of services provided by natural ecosystems to human activities along with a measure of their significance based upon economic valuation. While ESV has been used to provide new insight into land use management, few studies...
Resource Type:: Masters Thesis
Full Text:: throughout my academic adventures here at OSU. My academic committee members, Dr. Randall Rosenberger and Dr

A Methodology to directly input data from an uncontrolled aerial photograph into a vector based geographic information system

Creator:: Sneed, Jacquelin M.
Abstract:: Historically the U.S. Forest Service has used uncorrected aerial photographs to delineate proposed and past management activities on the land base it manages. Transferring a boundary from an image not planimetrically correct to a planimetrically corrected image introduces errors. Positional accuracy of boundaries affects the number of acres the Forest...
Resource Type:: Masters Thesis
Full Text:: Kimerling, Dr. Gordon Matzke, Dennis White and Dr. Alan Niem for their guidance and editorial help. Thanks

Eastward Routing of Glacial Lake Agassiz Runoff caused the Younger Dryas Cold Event

Creator:: Leydet, David J.
Abstract:: The purpose of this thesis is to analyze an abrupt case of climate change in the past as a means to understand the mechanisms that force climate change. By looking to past analogs of climate change, we hopefully will gain an understanding of these events, which could be used to...
Resource Type:: Masters Thesis
Full Text:: graduate studies. To my parents, Dennis and Theresa Leydet thank you for everything you have done for me

Conservation of Rorippa columbiae : an evaluation of reintroduction potential through the study of germination ecology, propagation methods, and habitat requirements

Creator:: Kentnesse, Laura E.
Abstract:: Rare plant reintroductions are a critical conservation tool for the augmentation of diminishing populations, or re-establishment of extirpated populations. Analysis of reintroduction failures suggests that a sophisticated understanding of species biology, ecology, and habitat is essential for producing self-sustaining rare plant populations. This study sought to generate that background knowledge...
Resource Type:: Masters Thesis
Full Text:: statistical testing and ecological insights. I thank Dr. Dennis Albert for his enthusiasm for playa species

Structure, function, and analysis of Coleoptera and Heteroptera assemblages on two species of hazelnut in Oregon

Creator:: Wetherill, Karen R.
Abstract:: The European hazelnut, Corylus avellana L., was imported into the U.S. in the late 1800's and is now grown throughout the Willamette Valley in Oregon. A native species of hazelnut, C. cornuta Marshall, is a common shrub found in forested areas of the Pacific Northwest. Foliage of both C. avellana...
Resource Type:: Masters Thesis
Full Text:: ] Hippodamia convergens Guerin-Meneville [s,v] Hippodamia sinuata Mulsant [u,v] Mulsantina picta (Randall) [u,b

Sulfur determinations by use of calcium hydride

Creator:: Majors, Forest Harmon
Resource Type:: Masters Thesis
Full Text:: Lewis aid Randall(8) that the free energy of the re- action of calcium and hydrogen is zero at a

Water use of cool season grasses and their effect on grapevine (Vitis vinifera) growth and development

Creator:: Doty, Jean A.
Abstract:: The use of grass cover crops is a recommended practice in nonirrigated vineyards in the Willamette Valley, Oregon. Two studies were initiated to investigate the competitive and noncompetitive effects of grass cover crops on the growth and development of Pinot noir grapevines. Two greenhouse pot culture experiments were performed to...
Resource Type:: Masters Thesis
Full Text:: deeper (0.81-1.93 m) (Jaques, 1941). Data on rooting depths under natural conditions show |\_ ovina and

ScholarsArchive@OSU

Reconnaissance botany of alpine ecosystems on Prince of Wales Island, southeast Alaska

Biology of the two external Acarapis species of honey bees : Acarapis dorsalis Morgenthaler and Acarapis externus Morgenthaler (Acari: Tarsonemidae)

Fish and amphibian use of intermittent streams within the upper Willamette Basin, Oregon

An ecosystem service approach to inform reactive nitrogen management in the lower Yakima River Basin, Washington

A Methodology to directly input data from an uncontrolled aerial photograph into a vector based geographic information system

Eastward Routing of Glacial Lake Agassiz Runoff caused the Younger Dryas Cold Event

Conservation of Rorippa columbiae : an evaluation of reintroduction potential through the study of germination ecology, propagation methods, and habitat requirements

Structure, function, and analysis of Coleoptera and Heteroptera assemblages on two species of hazelnut in Oregon

Sulfur determinations by use of calcium hydride

Water use of cool season grasses and their effect on grapevine (Vitis vinifera) growth and development

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