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Historical alterations to the Columbia River Gorge as a result of transportation infrastructure, 1850-1900

Creator:: Daniel, Isaac B.
Abstract:: Featuring high waterfalls and forested cliffs, and displaying a remarkable transition between the Pacific and Interior west, the Columbia River Gorge reveals the grandeur of western landscapes. Yet the landscape that one sees today is an amalgamation of the Gorge's natural setting and its unique human history. Historical research on...
Resource Type:: Masters Thesis

Habitat use and selection by sage grouse broods in southeastern Oregon

Creator:: Drut, Martin S.
Abstract:: In Oregon, sage grouse (Centrocercus urophasianus) were common in the eastern portion of the state. Since 1940 populations declined because of decreased productivity. The western subspecies (C. u. phaios) was listed as a candidate for threatened and endangered status in 1985 because of declines in Oregon and Washington and extirpation...
Resource Type:: Masters Thesis
Full Text:: Southeastern Oregon Redacted for Privacy Abstract approved: U JOhn A. Cragrd In Oregon, sage grouse

Nitrogen and phosphorus uptake by Enteromorpha prolifera (Mull.) J. Ag.

Creator:: O'Brien, Margaret C. (Margaret Claire), 1954-
Resource Type:: Masters Thesis
Full Text:: tlptake by Enteromorpha prolifera (Mull.) J. Ag. Abstract approved: Patricia A. Wheeler The influence

Habitat alteration and human disturbance : their impact on cougar habitat utilization in southwest Oregon

Creator:: Gagliuso, Robert A.
Abstract:: Eight cougars were radio-collared and monitored during 1985 - 1987. Home range size, determined by minimum convex polygons, averaged 153.1 km2 for females, 543.5 km2 for males. Core home range size, determined by harmonic mean analysis, averaged 21.7 km2 for females, 17.9 km2 for males. Home ranges of males and...
Resource Type:: Masters Thesis

The conceptual development and use of ecoregion classifications

Creator:: Brewer, Isaac
Abstract:: This thesis explores the genesis of the ecoregion concept, examines the conceptual development of ecoregion classification systems, investigates applications of ecoregion classification systems for a broad range of purposes, and discusses the prospects for the further evolution of this concept. An ecoregion is an area that exhibits patterns of homogeneity...
Resource Type:: Masters Thesis

Variation in female reproductive success in amphibians

Creator:: Dyal, Leslie A.
Abstract:: My dissertation focuses on the factors that influence variation in female reproductive success in plethodontid salamanders and in toads. Variation in reproductive success fuels evolutionary change. Although, females often have been overlooked in studies of reproductive success due to perceived lower levels of variation when compared to variation in male...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Leslie A. Dyal for the

The asymmetric binding of Actinomycin D to DNA hexamers

Creator:: Ivancic, Monika
Abstract:: The solution structure determination of DNA molecules has been an important part of structural biology. NMR solution structures are a complement to structures solved via X-ray crystallography; the two methods are the only ways of obtaining three dimensional coordinates of macromolecules. Because of the nature of the molecule, the solution...
Resource Type:: Dissertation
Full Text:: molecules has been an important part of structural biology. NIVIR solution structures are a complement to

Landscape level patterns in biodiversity : plant species and biomass structure

Creator:: Heider, Christopher
Abstract:: In the tropics, widespread deforestation and conversion of primary forests to agricultural and pasture lands has resulted in losses of composition, structure, and functions of forest landscapes. Deforestation in the tropics is typically preformed via slash-and-burn practices; the byproducts from combustion have been identified as the second-highest form of anthropogenically...
Resource Type:: Masters Thesis
Full Text:: with respect to an array of environmental variables. These variables included a wide elevational range

Juvenile survival and birth-site selection of Rocky Mountain elk in northeastern Oregon

Creator:: Rearden, Spencer N.
Abstract:: With declining populations and low calf recruitment in northeastern Oregon, much interest has been generated to study the survival rates and causes of mortality of Rocky Mountain elk (Cervus elaphus nelsoni). I investigated the causes of elk calf mortality and the effects of predation risk on birth-site selection by cow...
Resource Type:: Masters Thesis
Full Text:: adjacent study areas, the Wenaha and Sled Springs, with the use of vaginal implant transmitters, a

Chemodetection of threatening chemical stimuli by juvenile coho salmon (Oncorhynchus kisutch)

Creator:: Stone, Steven L.
Resource Type:: Masters Thesis
Full Text:: chemical stimuli was assessed using a two-choice Y-maze. It was hypothesized that juvenile salmon would

ScholarsArchive@OSU

Historical alterations to the Columbia River Gorge as a result of transportation infrastructure, 1850-1900

Habitat use and selection by sage grouse broods in southeastern Oregon

Nitrogen and phosphorus uptake by Enteromorpha prolifera (Mull.) J. Ag.

Habitat alteration and human disturbance : their impact on cougar habitat utilization in southwest Oregon

The conceptual development and use of ecoregion classifications

Variation in female reproductive success in amphibians

The asymmetric binding of Actinomycin D to DNA hexamers

Landscape level patterns in biodiversity : plant species and biomass structure

Juvenile survival and birth-site selection of Rocky Mountain elk in northeastern Oregon

Chemodetection of threatening chemical stimuli by juvenile coho salmon (Oncorhynchus kisutch)

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