Index Catalog // ScholarsArchive@OSU

An investigation into the comparative utility of color infrared aerial photography and LANDSAT data for detailed surface cover type mapping within Crater Lake National Park, Oregon

Creator:: Walsh, Stephen Joseph, 1951-
Abstract:: The identification and mapping of surface cover types within Crater Lake National Park, Oregon, has been effectively completed through the utilization of LANDSAT digital data and NASA U-2 color infrared aerial photography. Classification of LANDSAT data for surface cover type identification and mapping was accomplished through use of the Interactive...
Resource Type:: Dissertation

Sound production in Leperisinus oregonous Blackman and L. californicus Swaine (Coleoptera:Scolytidae)

Creator:: Vernoff, Suellen
Abstract:: Both Leperisinus oregonus and L. californicus are bark beetle species which emerge from Fraxinus latifolia brood logs as sexually immature adults and disperse to living ash. Occasional field observations suggest that, for overwintering and maturation feeding, L. oregonus enter trunks and branches, whereas L.; californicus enter twig crotches, buds and...
Resource Type:: Masters Thesis
Full Text:: Sound production in Leperisinus oregonous Blackman and L

Influence of stocking density on grazing beef cattle performance, diet composition foraging efficiency, and diet quality on a late-spring early-summer native bunchgrass prairie

Creator:: Wyffels, Samuel A.
Abstract:: This study evaluated the influence of cattle stocking density on botanical composition of diet, diet preference, and cattle performance on the Zumwalt Prairie in Northeastern Oregon. In each of two years, 192 cow-calf pairs (549.27 kg, BCS = 4.89) and 48 yearling heifers (383.34 kg, BCS = 5.02) were stratified...
Resource Type:: Masters Thesis
Full Text:: Jersey Irwin, L. L., J. G. Cook, R. A. Riggs, J. M. Skovlin. 1994. Effects of long-term grazing by

Life-history, growth and interference of cheatgrass (Bromus tectorum L.) and yellow starthistle (Centaurea solstitialis L.)

Creator:: Sheley, Roger Leslie
Abstract:: Cheatgrass (Bromus tectorum L.) and yellow starthistle (Centaurea soistitialis L.) have invaded over 3 million ha of grasslands in the western U.S. Future management will require an understanding of the conditions, mechanisms, and processes which control species dominance, community dynamics, and desirable plant establishment in these alien dominated annual rangelands....
Resource Type:: Dissertation

Effects of wildfire on growth and demographics of coastal cutthroat trout in headwater streams

Creator:: Heck, Michael P.
Abstract:: Wildfire is a largely terrestrial perturbation broadly recognized as an agent of disturbance and ecological change in forested biomes. Effects of post-fire conditions on biotic components of aquatic systems have been less well-documented, although hypothetically, the two are strongly connected. In fact, the influence of wildfire may be most profound...
Resource Type:: Masters Thesis
Full Text:: following people were invaluable to this project: Bob Gresswell, Doug Bateman, Gary Larson, Doug Markle

Landscape occupancy by free ranging cattle in northeast Oregon

Creator:: Wilson, Kerry D.
Abstract:: Global Positioning System (GPS) and Geographic Information System (GIS) technologies were employed to evaluate cattle occupancy of three landscape attributes on three different grazing allotments administered by the Wallowa Whitman National Forest in Northeast Oregon. Topographic characteristics of slope; 0-4%, 4-12%, 12-35% and >35% were evaluated as well as north...
Resource Type:: Masters Thesis
Full Text:: . Landscape Occupancy by Free Ranging Cattle in Northeast Oregon. Abstract approved: Larry L. Larson

Nanotoxicology to Nanotherapeutics : Prioritizing Hazard and Anticancer Efficacy of Nanomaterials using the Embryonic Zebrafish Model

Creator:: Wehmas, Leah C.
Abstract:: The numerous different types of nanomaterials and paucity of reliable in vivo information on toxicity has resulted in enduring uncertainties associated with health and safety risks, thereby slowing progress in nanotherapeutic assessment and development. This dissertation explores how the embryonic zebrafish model can be applied to prioritize commonly used nanomaterial...
Resource Type:: Dissertation
Full Text:: Anticancer Efficacy of Nanomaterials using the Embryonic Zebrafish Model Abstract approved: Robert L

The isolation of Lactococcus lactis subsp. cremoris from nature with probes for 16S ribosomal RNAs

Creator:: Salama, Maysoon
Resource Type:: Dissertation
Full Text:: Schaup, Dr. Gary L. Taghon, and Dr. D. Mattson. I wish to express my sincere gratitude to Dr. J. L

Implications of dietary lipid and carbohydrate intake on the liver and the susceptibility of hatchery-reared rainbow trout (Salmo gairdneri) to vibriosis

Creator:: Heres E., Allan A.
Abstract:: The hypotheses to be tested in this investigation are: 1) there is a threshold level of liver lipid and glycogen content above which the health condition of hatchery-reared fish is impaired, 2) fatty and high glycogen livers impair liver function and structure, and 3) fatty and high glycogen livers increase...
Resource Type:: Masters Thesis

Sediment characteristics and the trophic status of four Oregon lakes

Creator:: Meyerhoff, Roger Dean
Abstract:: There is evidence that recent ecological changes in lakes and their watersheds can be detected from analysis of lake sediments. This study was initiated to correlate changes in some sediment characteristics of four Oregon lakes with past cultural developments of the lakes and their watersheds. The lakes chosen for this...
Resource Type:: Masters Thesis
Full Text:: appreciation to Drs. Gerald E. Davis, Gary L. Larson, and H.K. Phinney who served as members of my graduate

ScholarsArchive@OSU

An investigation into the comparative utility of color infrared aerial photography and LANDSAT data for detailed surface cover type mapping within Crater Lake National Park, Oregon

Sound production in Leperisinus oregonous Blackman and L. californicus Swaine (Coleoptera:Scolytidae)

Influence of stocking density on grazing beef cattle performance, diet composition foraging efficiency, and diet quality on a late-spring early-summer native bunchgrass prairie

Life-history, growth and interference of cheatgrass (Bromus tectorum L.) and yellow starthistle (Centaurea solstitialis L.)

Effects of wildfire on growth and demographics of coastal cutthroat trout in headwater streams

Landscape occupancy by free ranging cattle in northeast Oregon

Nanotoxicology to Nanotherapeutics : Prioritizing Hazard and Anticancer Efficacy of Nanomaterials using the Embryonic Zebrafish Model

The isolation of Lactococcus lactis subsp. cremoris from nature with probes for 16S ribosomal RNAs

Implications of dietary lipid and carbohydrate intake on the liver and the susceptibility of hatchery-reared rainbow trout (Salmo gairdneri) to vibriosis

Sediment characteristics and the trophic status of four Oregon lakes

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