Seasonal diet and food selection of California quail (Callipepla
californica) were studied at E.E. Wilson Wildlife Area, Oregon,
during 1985 to 1987. Analysis of diets of 105 quail, along with
information from 117 quail taken during 1976 to 1978 revealed 14 key
plant foods. Collectively, the key foods composed 87%...
Sage grouse (Centrocercus urophasianus) populations in Oregon
declined during the past 30 years as a result of impaired productivity.
The western subspecies (C. u. phaios) was listed as a candidate for
threatened and endangered status by the Department of the Interior in
1985 because of declines in Oregon and Washington...
Lau Basin basalts host an array of geochemical signatures that suggest incorporation of enriched mantle source material often associated with intraplate hotspots, but the origin of these signatures remain uncertain. Geochemical signatures associated with mantle material entrained from the nearby Samoan hotspot are present in northwest Lau Basin lavas, and...
Individual quota (IQ) management systems in commercial marine fisheries are highly diverse, differing in the security, durability and exclusivity of the harvesting privilege and the transferability of quota units. This diversity in the degree of harvest rights may influence the effectiveness of IQ fisheries to meet management objectives. We conducted...
Rights-based approaches are potentially promising tools to meet conservation objectives in natural resource management. Here, we evaluated how population status and fishery production respond to catch shares, a rights-based policy instrument in fisheries whereby participants are granted a right to harvest a fraction of the allowable catch. By analyzing time...
This thesis argues that the first two novels of Cormac McCarthy’s The Border Trilogy mark a sharp turn from the antihumanism of his earlier ‘Southern’ novels to a more affective exploration of posthumanist subjectivity within a world dominated by social discourse and metanarratives. In my examination of All the Pretty...
Oceanic plateaus are regions of overthickened oceanic crust and are often thought to form from the interaction of mantle plumes with oceanic lithosphere. These regions can cover vast areas of the ocean basins and represent a highly elevated magmatic flux relative to normal mid-ocean ridge spreading. Oceanic plateaus are considered...
Much of the Columbia River Basin has been cultivated for agriculture, which has reduced and fragmented the native shrub-steppe habitats. As a result, the range of the Washington ground squirrel (Spermophilus washingtoni) has been significantly reduced, prompting the states of Washington and Oregon to review their status. Consequently, I investigated...
Evaporation ponds that dispose of agricultural drainwater provide attractive habitat for waterbirds but may result in contaminant exposure that impairs reproduction. I estimated post-hatching survival and evaluated productivity estimates for American avocets (Recurvirostra americana) nesting at evaporation ponds in the Tulare Basin, California from 1991 to 1993. Avocets and Black-necked...