The Clark fault is one of the primary dextral faults in the San Jacinto fault zone system, southern California. Previous mapping of the Clark fault at its southern termination in the San Felipe Hills reveals it as a broad right lateral shear zone that ends north of the crossing, northeast-striking, left-lateral Extra fault. We investigate the relationship between the dextral Clark fault and the sinistral Extra fault to determine whether the Clark fault continues to the southeast. We present new structural, geophysical and geomorphic data that show that the Extra fault is a ~7 km wide, coordinated fault array comprised of four to six left-lateral fault zones. Active strands of the Clark fault zone persists through the Extra fault array to the Superstition Hills fault in the subsurface and rotate overlying sinistral faults in a clockwise sense. New detailed structural mapping between the San Felipe and Superstition Hills confirms that there is no continuous trace of the Clark fault zone at the surface but the fault zone has uplifted an elongate region ~950 km. sq. of latest Miocene to Pleistocene basin-fill in the field area and far outside of it. Detailed maps and cross sections of relocated microearthquakes show two earthquake swarms, one in 2007 and another in 2008 that project toward the San Felipe Hills, Tarantula Wash and Powerline strands of the dextral Clark fault zone in the San Felipe Hills, or possibly toward the parts of the Coyote Creek fault zone. We interpret two earthquake swarms as activating the San Jacinto fault zone beneath the Extra fault array. These data coupled with deformation patterns in published InSAR data sets suggest the presence of possible dextral faults at seismogenic depths that are not evident on the surface. We present field, geophysical and structural data that demonstrate dominantly left-lateral motion across the Extra fault array with complex motion on secondary strands in damage zones. Slickenlines measured within three fault zones in the Extra fault array reveal primarily strike-slip motion on the principal fault strands. Doubly-plunging anticlines between right-stepping en echelon strands of the Extra fault zone are consistent with contraction between steps of left-lateral faults and are inconsistent with steps in dominantly normal faults. Of the 21 published focal mechanisms for earthquakes in and near the field area, all record strike-slip and only two have a significant component of extension. Although the San Sebastian Marsh area is dominated by northeast-striking leftlateral faults at the surface, the Clark fault is evident at depth beneath the field area, in rotated faults, in microseismic alignments, and deformation in the Sebastian uplift. Based on these data the Clark fault zone appears to be continuous at depth to the Superstition Hills fault, as Fialko (2006) hypothesized with more limited data sets.

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Small herds of cows were observed and spatially mapped over continuous twenty-four hour periods. Treatments were implemented that investigated the effect of water site and supplementation on animal distribution patterns. A series of six observation periods constituted each observation series. Observation series were repeated winter (January) and summer (July) for two years. Forage conditions varied considerably between years and seasons. Three regression models for different periods related forage variables to animal use with R�� values ranging from 0.51 to 0.77. A spatial point analysis, Ripley's K, also discerned differences in spatial point arrangements related to differences in forage and season. It detected and quantified changes caused by locating a high-protein supplement in the pasture. Swale sites and slopes of less than 10 percent were preferred for grazing in all seasons. Water sources and shade trees were distribution focal points for three observation series. In the winter of 1998, animals spent more time on warmer sites. We recorded more cow activity and movement at night than other researchers. Resting areas had aspect and elevation attributes that relate to temperature regulation. Animal positions were analyzed to determine cattle subgroups. Forage availability and thermoregulatory needs influenced the distance between associated members. Social dominance and subgroup membership were closely related to the age of individual animals. A geographic information system based technique called multi-criteria evaluation was used to develop temporal/spatial models predicting cattle distribution across the landscape. Summer models worked better than winter models because water sources and shade sites were more consistent as focal points for cattle activities. / Graduation date: 2002

As ecologists are being called upon to predict the consequences of human perturbations to natural communities, an important goal is to understand what factors drive variability or consistency in nature. In the rocky intertidal of San Juan Island, Washington, a comparative experimental approach was used to investigate spatial and temporal variation in community organization. The effect of predation on B. glandula varied dramatically over small spatial scales between microhabitats but was remarkably consistent over time withing a given microhabitat. The effects of predation on S. cariosus varied over time within the same microhabitat. By repeating previous landmark experiments at our study site, and replicating these experiments across microhabitats, the domain of applicability of previous experimental information was greatly expanded. In an early successional assemblage on the Oregon coast, I tested the hypothesis that, when the direct effect of one species on another increases in relative strength, its total effect (direct + indirect) is less variable or conditional than if the link between those species is weak. The effect of strong predation by whelks was less sensitive to the presence of additional species and more consistently dampened natural variation between experimental starting dates and between individual replicates within a given experiment. In contrast, the outcome of weak predation was more spatially and temporally variable in sign, and whether it magnified or dampened differences between individual replicates varied between experiments. Consequently the mean total effect of weak predation generally did not differ significantly from zero. However, in some cases, the range of variation (both within and between experiments) in the effect of weak predation exceeded the magnitude of the strongest total effect observed. Longer term results of the experiments on the Oregon coast examined the role of historic factors in influencing the degree to which successional paths are canalized and repeatable or contingent and variable. Succession in mid-intertidal patches in the mussel bed displayed complex patterns of historic effects that varied between species and between different stages of succession. Despite its potential complexity, this system exhibited some consistent and repeatable patterns of succession. Some important canalizing, or noise-dampening forces in this system included: 1) physiological and life-history constraints, 2) compensatory responses of functionally redundant species, and 3) strong interactions between species. / Graduation date: 1996

Thesis (M.A. in anthropology)--Washington State University, May 2007. / Includes bibliographical references (p. 121-133).

Thesis (Ph. D.)--University of Oregon, 2006. / Typescript. Includes vita and abstract. Includes bibliographical references (leaves 145-149). Also available for download via the World Wide Web; free to University of Oregon users.

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Diss.--Gesellschaftswissenschaften und Philosophie--Marburg--Phillips-Universität. / Bibliogr. p. 287-297.

Thesis (Ph. D.)--University of Texas at Austin, 2005. / Includes bibliographical references (leaves 210-223).

This dissertation examines the intersections of urban redevelopment and sexual politics in San Francisco from the first calls for a comprehensive land-use plan in the early 1940s to the highpoint of landscape destruction in the mid 1960s. During the war years, city leaders and prominent citizens compiled and prioritized a list of postwar planning projects that included improvements to the mass transit system, redevelopment of the downtown waterfront, and expansion of the city’s tourism and convention facilities. The footprint of these projects necessitated the destruction of significant elements of the built environment, including cable car lines, low rent hotels, industrial zones, and nighttime entertainment districts. After the war, civic leaders, elected officials, business interests and newspaper publishers attempted to rally support for these projects and searched for new ways to assert control over the urban landscape. San Franciscans, however, resisted significant components of the post-war civic improvement program by mobilizing against plans to replace cable cars with buses, by voting down schemes to redevelop the waterfront, and by blocking efforts to expand the freeway network. In this larger context, gays and lesbians in San Francisco in the early 1960s organized as a response to displacement from the low-rent hotel and bar districts on the edge of an expanding downtown. Specific examples of the loss of gay social spaces due to redevelopment pressures include the destruction of a popular gay bar to make way for a new airline bus terminal; the acquisition and razing of several businesses on the waterfront that hosted a thriving gay subculture; and the closure of a gay-oriented movie house after it aroused the ire of neighborhood activists in the Haight Ashbury district. This dissertation builds on previous work that examines the cultural politics of urban landscape change, as well as literature on the formation of urban sexuality-base subcultures to argue that the material transformation of urban space played a fundamental role in the emergence of contemporary notions of sexual difference. / text