@mastersthesis {557, title = {Twentieth Century Fire Patterns in the Gila/Aldo Leopold Wilderness Areas, New Mexico and the Selway-Bitterroot Wilderness Area, Idaho/Montana}, volume = {PhD}, year = {2000}, school = {University of Arizona}, abstract = {I used archives of wildfire perimeters (fire atlases) within a geographic information system (GIS) to describe and evaluate fire frequency patterns for the 20 th century in the 486,673-ha Gila/Aldo Leopold Wilderness Complex (GALWC), New Mexico and the 785,090-ha Selway-Bitterroot Wilderness Complex (SBWC) in Idaho and Montana. I addressed questions about changing 20 th century fire frequencies and landscape-scale controls of fire frequency by analyzing fire atlases along with data for topography, vegetation, and climate. Similarities and differences in comparisons between study areas highlight important aspects of fire regimes and strengthen my interpretation and inference. In the GALWC, fire rotations were shortest during the recent wildfire use period (1975-1993) and longest during the pre-modern suppression period (1909-1946). In the SBWC, fire rotations were shortest during the pre-modern suppression period (1880-1934) and longest during the modern suppression period (1935-1975). Elevations with the highest fire frequencies differed between study areas. However, forest types found at these elevations are characterized by similar overstory tree species. Steeper northeastern slopes in the GALWC and southwestern slopes in the SBWC burned most frequently. I assert that, in the GALWC, horizontal fuel continuity is a main factor determining fire frequency. In the SBWC, fuel moisture status limits fire frequency. Fires are most frequent in areas where ignitions occur and neither fuel continuity nor fuel moisture are likely to limit fire spread. Three statistical modeling approaches were used to produce maps of reburn probabilities. Log-likelihood modeling provided the most satisfactory results, while logistic regression and classification and regression trees yielded statistically insignificant models. Empirical models contributed to the assertion that fuel continuity limits fire frequency in the GALWC while fuel moisture limits fire frequency in the SBWC. Mapped fire perimeters provide a valuable source of spatial historical information for describing the role of large fires over broad areas. This dissertation enhances scientific knowledge about broad scale changes in fire regimes. Comparisons between areas facilitate identification of unique versus general patterns. Results provide a contemporary baseline for comparison with estimates of Pre-EuroAmerican fire frequencies, and a historical, spatial context for modeling and managing future fire regimes.}, keywords = {Watershed Management}, url = {http://ezproxy.library.arizona.edu/login?url=http://proquest.umi.com/pqdweb?did=728349901\&sid=9\&Fmt=2\&clientId=43922\&RQT=309\&VName=PQD}, author = {Rollins, Mathew Gregory} } @mastersthesis {656, title = {The architecture of Grasshopper Pueblo: Dynamics of form, function, and use of space in a prehistoric community}, volume = {Phd}, year = {1999}, school = {University of Arizona}, abstract = {Architecture can be an enigmatic class of material culture to understand archaeologically and a single approach to its analysis has defied archaeologists. This study views pueblos as analogous to organisms that are constantly developing and degenerating. The ability to draw behavioral inferences from the architecture of Grasshopper Pueblo (A.D. 1300-1400) is impacted not only by these everyday processes of growth and degeneration, but also by the activities of the different social or ethnic groups who were responsible for assembling the pueblo. Fortunately, this study benefits from a long and productive history of architectural research in the American Southwest and from a thirty-year excavation program at Grasshopper itself, which produced a large and representative sample of this complex architectural organism. This extensive sample insures reliable inferences about the growth and degeneration of Grasshopper Pueblo because it is representative of the parameters of time, space, and behavior at the site. This study reinforces previous work at Grasshopper and provides new insights into intrasite community dynamics that have implications for both Grasshopper research and for studies of architecture and community patterns at other southwestern pueblo sites.}, keywords = {Architecture, Arizona, Grasshopper Pueblo, Prehistoric, Use of space}, url = {http://ezproxy.library.arizona.edu/login?url=http://proquest.umi.com/pqdweb?did=733967641\&sid=16\&Fmt=2\&clientId=43922\&RQT=309\&VName=PQD}, author = {Charles Riggs} } @mastersthesis {558, title = {Tree-Ring Reconstruction of Western Spruce Budworm Outbreaks in the Rio Grande National Forest, Colorado}, volume = {Master of Science}, year = {1999}, pages = {97}, school = {University of Arizona}, address = {Tucson}, abstract = {

Tree-ring records were used to reconstruct the spatial and temporal patterns of western spruce budworm (Choristoneura occidentalis Freeman) outbreaks in the Rio Grande National Forest (RGNF) of southern Colorado. Reconstructions at 11 host stands showed a synchronous pattern of outbreaks with a peak in the number of trees recording outbreaks over the entire RGNF on average every 24 years. These synchronous periods of outbreaks coincided with periods of increased moisture as indicated by an independently reconstructed summer Palmer Drought Severity Index, while relatively few trees recorded outbreaks during dry periods. The reconstruction on the RGNF does not support the hypothesis that human land use has significantly altered outbreak patterns. Tree response to outbreaks in the RGNF was different from prior studies as reductions in the growth were typically detectable only when growth was compared to that of nonhost tree species.

}, keywords = {colorado, dendrochronology, department of agriculture, forest service, national forest, outbreak, palmer drought severity index, RGNF, rio grande, tree ring, western spruce budworm}, author = {Ryerson, Daniel E.} } @mastersthesis {553, title = {A Quantitative Analysis of a Physically Based Predictive Model of Sediment Yield for Small Mountainous Watersheds in Southern California}, volume = {MA}, year = {1988}, school = {University of California}, author = {Rees, Kathleen Anne} } @mastersthesis {733, title = {Little archaeology, big archaeology : the changing context of archaeological research}, volume = {PhD}, year = {1983}, school = {University of Arizona}, url = {no copy on file in LTRR}, author = {Eugene Rogge} } @mastersthesis {552, title = {An Analysis of Radial Growth of Chestnut Oak and Pitch Pine}, volume = {MS}, year = {1977}, school = {Virginia Polytech Institute and State University}, keywords = {Forestry and Forest Products}, author = {Rauscher, Harald M.} } @mastersthesis {554, title = {Contributions Pollen Analytique A L{\textquoteright}Histoire Tardiglaciaire Et Holocene De La Vegetation De La Montagne Corse}, volume = {PhD}, year = {1975}, school = {Universit{\'e} d{\textquoteright}Aix-Marseille III}, author = {Reille, Maurice} } @mastersthesis {453, title = {Tree-Ring Dating of the Bald Cypress (Taxodium Distichum [L] Rich.) in the Lower Mississippi Valley}, volume = {MS}, year = {1973}, school = {Arkansas State University}, abstract = {The purpose of this study is to determine if bald cypress (Taxodium distichum [L] Rich.) can be used satisfactorily for tree ring dating and, if so, to establish a master tree ring chronology for the area referred to as the {\textquotedblleft}sunk lands.{\textquotedblright} (no abstract provided, taken from introduction p.1)}, author = {Bowers, Lynne Jordan} } @mastersthesis {555, title = {An Assessment of the Role of Volcanic Dust in Determining Modern Changes in the Temperature of the Northern Hemisphere}, volume = {PhD}, year = {1971}, school = {University of Wisconsin}, keywords = {Meterology}, url = {http://ezproxy.library.arizona.edu/login?url=http://proquest.umi.com/pqdweb?did=756913801\&sid=8\&Fmt=1\&clientId=43922\&RQT=309\&VName=PQD}, author = {Reitan, Clayton Harold} } @mastersthesis {556, title = {Tree-Ring Materials as a Basis for Cultural Interpretations}, volume = {PhD}, year = {1967}, school = {University of Arizona}, abstract = {

Since 1963, the Laboratory of Tree-ring Research has been engaged in a systematic reanalysis of all samples from the prehistoric Southwest. Particular emphasis has been placed on archaeological controls of the samples to enhance the chronological interpretations. In the course of this work, other characteristics of the samples were noted that opened the way for deductions regarding nonchronological attributes of the prehistorically-used wood\…

}, author = {Robinson, William J.} }