Index Catalog // ScholarsArchive@OSU

Functional relationships among vegetation, nocturnal insects, and bats in riparian areas of the Oregon Coast Range

Creator:: Ober, Holly K.
Abstract:: Vegetation provides food for many insects, and many insects serve as food for bats. We investigated the linkages among these three trophic levels in riparian areas throughout the Oregon Coast Range by examining the influence of vegetation cover, composition, and structure on the activity of nocturnal insects and bats, the...
Resource Type:: Dissertation
Full Text:: :______________________________________________________ John P. Hayes Vegetation provides food for many insects, and many insects serve as food

Breeding season habitat use and response to management activities by greater sage-grouse on Sheldon National Wildlife Refuge, Nevada

Creator:: Davis, Dawn M.
Abstract:: Greater Sage-Grouse (Centrocercus urophasianus) have experienced declines throughout their range over the last 50 years. Long-term declines in sage-grouse abundance in Nevada and Oregon have been attributed to reduced productivity. From 1995-1997, sage-grouse production on Sheldon National Wildlife Refuge (SNWR), Nevada was greater compared to Hart Mountain National Antelope Refuge...
Resource Type:: Masters Thesis
Full Text:: . Abstract approved: John Greater Sage-Grouse (Centrocercus urophasianus) have experienced declines

Demography, home range, and habitat selection of northern spotted owls in the Ashland Watershed

Creator:: Schilling, Jason W.
Abstract:: Northern Spotted Owls (Strix occidentalis caurina) inhabit productive forests that historically supported frequent, large, variable-severity fires in the Klamath province of southwestern Oregon occur in complex. The potential for high-severity wildfire remains high throughout this region, so remaining spotted owl habitat is at risk. An adaptive management approach to fire...
Resource Type:: Masters Thesis
Full Text:: during the course of this study. I am grateful to my committee members Dr. John Bailey and Dr. Eric

Floodplain vegetation following over 80 years of intensive land use and de-watering : Lower Owens River, California

Creator:: Risso, Derek A.
Abstract:: Riparian areas in the arid western United States are critical ecosystems that have been severely degraded by a variety of land and water uses over the last 100 years. In this study, the composition and structure of floodplain vegetation along the Lower Owens River in eastern California was quantitatively described...
Resource Type:: Masters Thesis
Full Text:: : _________________________________________________ J. Boone Kauffman Riparian areas in the arid western United States are critical ecosystems

The relationship between the gut and the water-electrolyte balance of a marine teleost, Enophrys bison (Girard)

Creator:: Sleet, Randolph Bullock
Abstract:: In higher vertebrates, normal digestion and absorption by the gastrointestinal tract are dependent on the orderly and controlled transit of intraluminal contents. A relationship between fluid passage through the gut and absorption from the gut has yet to be examined in fish. In marine teleosts, the osmolality and ion concentration...
Resource Type:: Dissertation
Full Text:: ) Abstract approved: Redacted for Privacy Lavern J. Weber In higher vertebrates, normal digestion and

Improving Projections of Tidal Marsh Persistence under Climate Change with Remote Sensing and Site-Specific Data

Creator:: Buffington, Kevin J.
Abstract:: Tidal marshes are dynamic ecosystems that are threatened by climate change and sea-level rise. To characterize baseline condition and historic climate sensitivities, and improve projections into the future, new methods are required that integrate data from the field and remote sensing platforms. Marsh elevation response models can be calibrated with...
Resource Type:: Dissertation
Full Text:: ABSTRACT OF THE DISSERTATION OF Kevin J. Buffington for the degree of Doctor of Philosophy in Wildlife

California condors in the Pacific Northwest : integrating history, molecular ecology, and spatial modeling for reintroduction planning

Creator:: D'Elia, Jesse
Abstract:: Reintroduction programs are increasingly being used to save animals from extinction and aid in their recovery. The California Condor (Gymnogyps californianus), one of the most endangered birds in the world, is a remarkable example of how reintroduction programs can help rapidly increase a species' population numbers and range following a...
Resource Type:: Dissertation
Full Text:: Thorson, Richard Hannan, Theresa Rabot, Paul Henson, Patrick Sousa, John McCamman, Scott McCarthy

Estimation of transmission dynamics of the Ceratomyxa shasta actinospore to the salmonid host

Creator:: Ray, R. A. and Bartholomew, J. L.
Abstract:: Transmission dynamics of the actinospore stage of Ceratomyxa shasta to the salmonid host were investigated under field and laboratory conditions. The number of parasites transmitted and the transmission rate were compared between 2 different exposure durations and also among different water velocities, by means of field exposures. Under laboratory conditions,...
Resource Type:: Article
Full Text:: Ceratomyxa shasta actinospore to the salmonid host R. A. RAY1 and J. L. BARTHOLOMEW2* 1Department of

The Influence of Wildfire and Invasive Vegetation on Mule Deer

Creator:: Schuyler, Elizabeth
Abstract:: The western United States has experienced large-scale degradation due to land use and land cover changes, invasion of annual grasses, and expansion of woody plants into grass and shrublands and the resultant altered fire regimes. These landscape-scale changes have coincided with declining mule deer (Odocoileus hemionus) populations, making habitat loss...
Resource Type:: Dissertation
Full Text:: migratory population of mule deer in the John Day Basin, Oregon, USA. In addition, I compared forage

A geographical framework for assessing longitudinal patterns in stream habitat and fish distribution

Creator:: Torgersen, Christian E.
Abstract:: New approaches are needed to quantify and understand spatial patterns of stream fishes and their environment. Concepts in riverine ecology emphasize the importance of thermal zones and gradual longitudinal changes in physical habitat and biota, but little is known about spatial variability within the river continuum. I present a conceptual...
Resource Type:: Dissertation
Full Text:: temperature (Tk) in the McKenzie River (A) and the Middle Fork John Day River (B) ......................62

ScholarsArchive@OSU

Functional relationships among vegetation, nocturnal insects, and bats in riparian areas of the Oregon Coast Range

Breeding season habitat use and response to management activities by greater sage-grouse on Sheldon National Wildlife Refuge, Nevada

Demography, home range, and habitat selection of northern spotted owls in the Ashland Watershed

Floodplain vegetation following over 80 years of intensive land use and de-watering : Lower Owens River, California

The relationship between the gut and the water-electrolyte balance of a marine teleost, Enophrys bison (Girard)

Improving Projections of Tidal Marsh Persistence under Climate Change with Remote Sensing and Site-Specific Data

California condors in the Pacific Northwest : integrating history, molecular ecology, and spatial modeling for reintroduction planning

Estimation of transmission dynamics of the Ceratomyxa shasta actinospore to the salmonid host

The Influence of Wildfire and Invasive Vegetation on Mule Deer

A geographical framework for assessing longitudinal patterns in stream habitat and fish distribution

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