Myxobolus cerebralis, the causative agent of whirling disease, has been a major contributor to the loss of young trout in numerous streams within the Intermountain West (Colorado, Idaho, Montana, Utah, Wyoming). Currently there are no effective management procedures for mitigating the effects of thi

A Thesis submitted to the faculty of the Graduate School of the University of Minnesota by Ryan Eric Erickson in partial fulfillment of the requirements for the degree of Master of Science, October 2007.

The current understanding of magmatic-hydrothermal processes resulting in the formation of porphyry and epithermal deposits is based on case studies that focused on deposits such as Santa Rita porphyry copper deposit in New Mexico, the Refugio porphyry gold deposit in Chile, and the Summitville high

The Mesaverde Group in the Piceance Basin of northwestern Colorado is a continuous tight gas accumulation that has established itself as one of the more prolific producers of natural gas in the Rocky Mountain Region.In the Piceance Basin, the most significant producing intervals within the Mesaverde

The Permian to Jurassic stratigraphy of the Colorado Plateau includes a number of units that were deposited under arid depositional conditions. These units each show distinctive weathering characteristics which cannot solely be attributed to variation in depositional environment or burial history. T

The Green River Formation is an Eocene lacustrine deposit that is present in several Rocky Mountain basins.In the Uinta basin, the Green River Formation has produced large amounts of oil and gas from many fields, the largest being the Greater Altamont-Bluebell field in the northern margin of the bas

o c i e t y ^" P o rk L overs Are No C r e d it to Our D em ocracy," Life, LV (S ep te m b er 6 , 1 9 6 3 ), I4., * Ib id .

Climate models forecast that headwater catchments in the western U.S. will undergo a reduction in snowpack, early season snowmelt, and increases in evapotranspiration. The resulting extended dry season will stress vegetation in mountainous watersheds throughout the Upper Colorado River Basin. We inv

The natural world is inherently complex, and the application of theories that reduce complexity may reveal general biological patterns that are otherwise obscured. The theoretical framework of ecological stoichiometry provides a lens through which to broaden understanding of complex ecological dynam

Pennsylvanian (Desmoinesian) sedimentary rocks within the Paradox Basin Four Corners area of the western United States afford a unique opportunity to study the development of sedimentary successions in a complex marine to nonmarine depositional setting. The close association of thick intervals of no

In 1846, the United States of America began a war with the Republic of Mexico. When it was over, one of the results was the acquisition of much of current California, Arizona, Nevada, Utah, southern Colorado and New Mexico. The region was occupied by Catholic Mexicans, a fact not lost on the America

This thesis explores preservation issues regarding modernist architecture in Chicago. As urban and public history research, the project examines the new questions brought to the forefront by recent controversies over the preservation of modernist architecture. Modernism, and an "all concrete" varian

Hidden River Cave is a stream cave system found in Horse Cave, KY with continuous water flow of its two branches, Wheet River and East River. The infrastructure of the city of Hose Cave, KY was originally designed to utilize natural sinkholes for drainage of all wastewaters. The city uses many of th

The Global list of endangered species of flora and fauna is growing, with the most highly specialized species often at ‘critically endangered’ status. Managing these populations effectively involves numerous and varied organizations, conflicting motivations, arbitrary anthropogenic boundaries and of

This collection of short literary fiction springs loosely from a contemplation of the enduring influence of Washington Irving’s Gothic in the Hudson Valley. The first story, “Life Is Good,” centers on a fictionalized account of a morbidly obese bear named Allen and a resilient child, Henny, who form

In Colorado and the southwestern United States, quaking aspen (Populus tremuloides Michx.) is a species of high ecological, economic, and aesthetic importance. In response to the interests of several landowners and land managers in my study sites, this thesis describes my efforts to identify differe

Deserving of much appreciation are Russell K. Murphy, who assisted in navigating the rugged field terrain, and the E. C. Lorig family of Eagle, Colorado, whose friendship, generosity, and guidance were extremely valuable

Snowfall, temperature and wind are three factors that quickly change avalanche conditions. Ridge-top winds have been used to assess avalanche conditions with mixed success due to high variability. Few analyses have tested the effect upper atmospheric winds have on avalanche conditions. This study at