Index Catalog // ScholarsArchive@OSU

Laboratory and field investigations on the movement of sand tracer under the influence of water waves : ripple development and longitudinal spreading of tracer material

Creator:: Miller, Martin C.
Resource Type:: Dissertation
Full Text:: : LABORATORY AND FIELD INVESTIGATIONS ON THE MOVEMENT OF SAND UNDER THE INFLUENCE OF WATER WAVES: RIPPLE

Relationships between grass canopy characteristics and Landsat Thematic Mapper bands

Creator:: Ripple, William J.
Abstract:: The relationships between spectral reflectance in the Landsat Thematic Mapper (TM) bands and grass canopy variables were evaluated using in situ remote sensing techniques. Reflectance data were collected from experimental plots of annual ryegrass (Lolium multiflorum) and tall fescue (Festuca arundinacea) using a Barnes Modular Multiband Radiometer (MMR). The canopy...
Resource Type:: Dissertation

Multi-scale relationships between aspen and birds in the northern Yellowstone ecosystem

Creator:: Hollenbeck, Jeff P., 1967-
Abstract:: I conducted a multi-scale evaluation of aspen – bird relationships in the northern ungulate winter range of the northern Yellowstone ecosystem during June 2001-03. Questions addressed were: (1) Does bird diversity increase with conifer presence in aspen stands? (2) Given known habitat selection cues, are migrating birds passively intercepted by...
Resource Type:: Dissertation
Full Text:: Birds in the Northern Yellowstone Ecosystem. Abstract approved: William J. Ripple

Landscape patterns of pre-logging forest conditions in western Oregon

Creator:: Rasmussen, Mary C.
Abstract:: Using historical maps and tools provided by GJS, the spatial patterns of pre-logging forest conditions were quantified for three landscapes in western Oregon. The spatial coincidence between forest patches and topographic features was determined for slope gradient, aspect, elevation, and distance from streams. Pre-logging and current forest compositions were compared....
Resource Type:: Masters Thesis

Trophic cascades and large mammals in the Yellowstone ecosystem

Creator:: Painter, Luke E.
Abstract:: Reintroduction of wolves to Yellowstone National Park (YNP) in 1995-96 provided a rare opportunity to observe the response of an ecosystem to the return of a top predator, including possible reversal of decades of decline of aspen, cottonwood, and tall willows suppressed by intensive herbivory on elk winter ranges. To...
Resource Type:: Dissertation
Full Text:: : William J. Ripple Reintroduction of wolves to Yellowstone National Park (YNP) in 1995-96 provided a

Analyzing fire mosaics in temperate coniferous forests with GIS and remote sensing

Creator:: Kushla, John D.
Abstract:: This investigation on fire mosaics addressed several aspects: (1) quantifying the role of terrain variables in fire-related mortality and historical mean fire return interval (MFRI), (2) comparing post-burn Landsat Thematic Mapper (TM) imagery, TM difference imagery, and aerial photo interpretation to map forest survival after wildfire, and (3) to describe...
Resource Type:: Dissertation

Quaking aspen persistence in three Oregon landscapes

Creator:: Seager, S. Trent
Abstract:: Quaking aspen (Populus tremuloides) is an important tree species in the western United States and there has been much concern about its persistence. In this thesis, I report on aspen in a portion of its range that has not been previously evaluated: the eastern and western slopes of the Central...
Resource Type:: Masters Thesis
Full Text:: : _________________________________________________________________ William J. Ripple Quaking aspen (Populus tremuloides) is an important tree species

Evidence of a trophic cascade among wolves, elk, and aspen in Yellowstone National Park, USA

Creator:: Halofsky, Joshua S.
Abstract:: According to general top-down trophic theory, in the presence of carnivores, herbivore behavior and/or densities could change and result in an overall decrease in herbivory on plant communities. In this dissertation, I examined the potential relationship between gray wolf (Canis lupus) presence and absence on elk (Cervus elaphus) herbivory of...
Resource Type:: Dissertation
Full Text:: : _________________________________________________________________ William J. Ripple According to general top-down trophic theory, in the presence of

Land cover at northern spotted owl nest and non-nest sites, east-central Coast Ranges, Oregon

Creator:: Perkins, John P.
Abstract:: This study examined the differences, at various scales, between northern spotted owl (Strix occidentalis caurina) nest sites and non-nest sites, i.e., sites where no nests were found during surveys, in the Coast Ranges of Oregon. I compared land cover around 41 owl nest sites (ONS) and 41 non-nest sites (NNS)...
Resource Type:: Masters Thesis
Full Text:: : Signature redacted for privacy. T William}: Ripple This study examined the differences, at various

Innate behavioral responses to extirpated mammalian apex predators : can fear be utilized to manage populations and protect sensitive habitats

Creator:: Ruch, Zachary
Abstract:: I conducted a field study using gray wolf and mountain lion urine to investigate white-tailed deer and mesopredator behavioral responses to novel predator cues in a natural setting and to see if any changes in wildlife activity correspond to changes in the local biodiversity of a wetland environment. I created...
Resource Type:: Capstone Project
Full Text:: ACKNOWLEDGEMENTS: I would like to take this moment to show my appreciation to Dr. William Ripple, who served

ScholarsArchive@OSU

Laboratory and field investigations on the movement of sand tracer under the influence of water waves : ripple development and longitudinal spreading of tracer material

Relationships between grass canopy characteristics and Landsat Thematic Mapper bands

Multi-scale relationships between aspen and birds in the northern Yellowstone ecosystem

Landscape patterns of pre-logging forest conditions in western Oregon

Trophic cascades and large mammals in the Yellowstone ecosystem

Analyzing fire mosaics in temperate coniferous forests with GIS and remote sensing

Quaking aspen persistence in three Oregon landscapes

Evidence of a trophic cascade among wolves, elk, and aspen in Yellowstone National Park, USA

Land cover at northern spotted owl nest and non-nest sites, east-central Coast Ranges, Oregon

Innate behavioral responses to extirpated mammalian apex predators : can fear be utilized to manage populations and protect sensitive habitats

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