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Anthropologists, and increasingly archaeologists, are using the word 'ontology' with escalating frequency. In Philosophy, where it originated, several subdivisions exist within the discipline, all of which deal with grouping things that exist into categories. What can archaeologists learn by taking this concept from philosophy and applying it to archaeology? Further, how do we recognize the ontologies of others, particularly those who did not leave a written record, in the archaeological record? The way that people categorize things plays a role in how they are disposed. Patterns in depositional practices emerge as visible traces in the archaeological record that allow us to recognize other people's ontologies. This is an important concept for archaeologists interested in addressing prehistoric value, since the value of a given object cannot be assessed without knowing how people in the past categorized things. In my work with anthropomorphic Hohokam figurines from the Phoenix Basin, I use an ontological approach to explore the life histories of figurines from their manufacture, through deposition in the archaeological record, and subsequent excavation in modern times. I then compare the figurine assemblage from recent excavations at La Villa (AZ T:12:148[ASM]) to see how it fits in the identified pattern.

Thunderstorms that occur in areas of complex terrain are a major severe weather hazard in the intermountain western U.S. Short-term quantitative estimation (QPE) of precipitation in complex terrain is a pressing need to better forecast flash flooding. Currently available techniques for QPE, that utilize a combination of rain gauge and weather radar information, may underestimate precipitation in areas where gauges do not exist or there is radar beam blockage. These are typically very mountainous and remote areas, that are quite vulnerable to flash flooding because of the steep topography. Lightning has been one of the novel ways suggested by the scientific community as an alternative to estimate precipitation over regions that experience convective precipitation, especially those continental areas with complex topography where the precipitation sensor measurements are scarce. This dissertation investigates the relationship between cloud-to-ground lightning and precipitation associated with convection with the purpose of estimating precipitation- mainly over areas of complex terrain which have precipitation sensor coverage problems (e.g. Southern Arizona).The results of this research are presented in two papers. The first, entitled Toward Development of Improved QPE in Complex Terrain Using Cloud-to-Ground Lighting Data: A case Study for the 2005 Monsoon in Southern Arizona, was published in the Journal of Hydrometeorology in December 2012. This initial study explores the relationship between cloud-to-ground lightning occurrences and multi-sensor gridded precipitation over southern Arizona. QPE is performed using a least squares approach for several time resolutions (seasonal -June, July and August-, 24 hourly and hourly) and for a 8 km grid size. The paper also presents problems that arise when the time resolution is increased, such as the spatial misplacing of discrete lightning events with gridded precipitation and the need to define a "diurnal day" that is synchronized with the diurnal cycle of convection. The second manuscript (unpublished), entitled An Improved QPE Over Complex Terrain by Using Cloud-to-Ground Lightning Occurrences, provides a new method to retrieve lightning-derived precipitation at 5 minutes and 5 Km time and space resolutions. A stationary model that employs spatio-temporal neighboring (Space and Time Invariant model -STI) improves upon the least squares method in the first paper. By applying a Kalman filter to the STI model, lightning-precipitation is retrieved by a dynamic model that changes in time. The results for seasonal and 5 minutes time resolution show that the dynamic model improves the retrievals derived by the STI model.

The Wilderness Act of 1964 states the purpose of the National Wilderness Preservation System is "to secure for the American people of present and future generations the benefits of an enduring resource of wilderness." But, how to accomplish this mandate is a complex task. The application of the Ecosystem Services model is ideal for facilitating the complex duel goals of securing benefits and preserving wilderness resources. Ecosystem Services directly addresses benefits derived from a landscape, even if the specifics of the benefits change over time. This dissertation employs Ecosystem Services as a framework to provide a more complete understanding of wilderness values. In three separate studies conducted in wilderness areas in Southern Arizona, (Assessing Border-Related Human Impacts at Organ Pipe Cactus National Monument, Linking Visitor Flows and Patterns of Use with General Management Planning in Saguaro National Park and Monitoring and Estimating Visitor Use at the Madrona Ranger Station and Surrounding Landscape) elements of Cultural Ecosystem Services (CES) are illuminated.I found that the more holistic epistemology of Ecosystem Services allowed for the inclusion of better scientific data in the management process. The inclusion of quantitative, repeatable, defensible studies of user behavior in wildlands allows for dynamic management options that are rooted in real conditions (mutable, undesirable or unique). Specifically Cultural Ecosystem Services address the value and significance of the unique landscape of wilderness. Previous models for wildland management sought specific metrics of carrying capacity to limit use and control impact. Ecosystem Services combines diverse scientific fields to provide real understanding of the landscape. The addition of ES to manager's decision processes allows for better understanding of real conditions.

Project Completion Report, OWRT Project No. A-043-ARIZ / Agreement No. 14-31-0001-4003 / Project Dates: July 1973 - June 1974 / Acknowledgment: The work upon which this report is based was supported in large part by funds provided by the United States Department of the Interior, Office of Water Research and Technology, as authorized under the Water Resources Research Act of 1964. / A growing demand for energy production in Arizona has increased the need for assembling and analyzing water resource information relative to energy production, especially electrical power generation. Unit water requirements for cooling of electrical plants, combined with projections of future electrical power demands in Arizona, provide a perspective on future quantities of water needed for cooling. Probabilistic estimates of storage reserves in Arizona groundwater basins indicate that some prospective plant sites can be supplied from groundwater for the 30 -year life of the plant, while others cannot. An estimate of comparative cost for supplying groundwater versus municipal wastewater for cooling electrical plants at selected sites in Arizona showed that use of wastewater would result in considerable savings over use of groundwater, at all sites considered.

My research centers on changes in personhood, identity and funerary rituals from the Early Agricultural Period to the Classic Period in the Tucson Basin. The three core papers of my dissertation represent submissions to peer-review journals or book chapters, all of which are connected by similar research themes. The first paper examines changes in funerary rituals from the Early Agricultural Period (2100 B.C.-A.D. 50 ) to the Early Preclassic Period (A.D. 475-750) and how these changes modified social relationships between the dead, their families and the community. A total of 21 archaeological sites and 436 burials were analyzed. The predominant mortuary rituals in the Early Agricultural Period were inhumations characterized by variations in body position and location, possibly emphasizing individuality. These rituals changed in the Preclassic Period as cremation became the dominant practice. Cremations during this period were mainly secondary deposits with low quantities of bone located in cemeteries within habitation courtyard groups. Social group membership was emphasized through these cremations. Results suggest that triggers for changes in funerary rituals through time were multicausal, but these changes are reflective of emerging group identities with strong social cohesion, consistent with patterns observed in other archaeological evidence from the area. The second paper explores how the Preclassic Hohokam (A.D. 475-1150) of the Tucson Basin created different pathways to personhood for the dead. This consisted of examining how bodies were treated within cremation practices at four recently excavated Tucson Basin Hohokam archaeological sites and through consideration of different ethnographic accounts of cremation practices among Native American groups from the Southwestern United States. Historical accounts of cremation practices utilized in this work originate from the Pima (Akimel O'odham), Tohono O'odham, and several Yuman-speaking groups. Based on archaeological and linguistic evidence, the ancestors of these historic groups had ancestral connections with the Hohokam. Results of my research suggest dynamic transitions of personhood occurred at death while these transitions occurred both with the dead as well as the living. Subsequent to the cremation pyre bodies were transformed into "body-objects" and continued to evoke memories of the deceased person's life. Furthermore, at these events mutually-identifying relationships were created, transformed or destroyed through interactions of the community, family and deceased. The third paper examines the identification of and changes in aspects of personhood among the Tucson Basin Hohokam from the Preclassic (A.D. 475-1150) to Classic periods (A.D. 1150-1450/1500). This is done by examining the biological profile, posthumous treatment of the body and mortuary practices of remains of 764 individuals from seven sites. Cremation was the predominant mortuary practice in the Tucson Basin during the Preclassic and Classic periods. However, inhumation also co-occurred at lower frequencies, particularly for fetus and infants, possibly due to the undeveloped form of self that these individuals had within the society. Through time cremation rituals changed particularly for individuals older than 15 years at death and adults. In the Preclassic Period, after the body was burned, the remains were fragmented, divided and distributed as inalienable possessions among families and within specific networks. This suggests a social construction of self that was more relational, part-person and part-object. In the Classic Period, these practices decreased and the remains were not divided but left in place or transferred almost wholly to a single secondary deposit. The perceptions of personhood in the Classic Period changed to a self that was considered as bounded units and more-whole even after its transformation during the cremation fire. It is possible that this transition through time occurred as a result of more centralized and private rituals, and by a general decrease in emotive networks. The changes in mortuary rituals are similar to broader sociopolitical changes observed in the Classic Period where an increase in social differentiation and complexity has been postulated.

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