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This dissertation explores vulnerability to extreme heat hazards in the Maricopa County, Arizona metropolitan region. By engaging an interdisciplinary approach, I uncover the epidemiological, historical-geographical, and mitigation dimensions of human vulnerability to extreme heat in a rapidly urbanizing region characterized by an intense urban heat island and summertime heat waves.

This dissertation explores vulnerability to extreme heat hazards in the Maricopa County, Arizona metropolitan region. By engaging an interdisciplinary approach, I uncover the epidemiological, historical-geographical, and mitigation dimensions of human vulnerability to extreme heat in a rapidly urbanizing region characterized by an intense urban heat island and summertime heat waves. I first frame the overall research within global climate change and hazards vulnerability research literature, and then present three case studies. I conclude with a synthesis of the findings and lessons learned from my interdisciplinary approach using an urban political ecology framework. In the first case study I construct and map a predictive index of sensitivity to heat health risks for neighborhoods, compare predicted neighborhood sensitivity to heat-related hospitalization rates, and estimate relative risk of hospitalizations for neighborhoods. In the second case study, I unpack the history and geography of land use/land cover change, urban development and marginalization of minorities that created the metropolitan region's urban heat island and consequently, the present conditions of extreme heat exposure and vulnerability in the urban core. The third study uses computational microclimate modeling to evaluate the potential of a vegetation-based intervention for mitigating extreme heat in an urban core neighborhood. Several findings relevant to extreme heat vulnerability emerge from the case studies. First, two main socio-demographic groups are found to be at higher risk for heat illness: low-income minorities in sparsely-vegetated neighborhoods in the urban core, and the elderly and socially-isolated in the expansive suburban fringe of Maricopa County. The second case study reveals that current conditions of heat exposure in the region's urban heat island are the legacy of historical marginalization of minorities and large-scale land-use/land cover transformations of natural desert land covers into heat-retaining urban surfaces of the built environment. Third, summertime air temperature reductions in the range 0.9-1.9 °C and of up to 8.4 °C in surface temperatures in the urban core can be achieved through desert-adapted canopied vegetation, suggesting that, at the microscale, the urban heat island can be mitigated by creating vegetated park cool islands. A synthesis of the three case studies using the urban political ecology framework argues that climate changed-induced heat hazards in cities must be problematized within the socio-ecological transformations that produce and reproduce urban landscapes of risk. The interdisciplinary approach to heat hazards in this dissertation advances understanding of the social and ecological drivers of extreme heat by drawing on multiple theories and methods from sociology, urban and Marxist geography, microclimatology, spatial epidemiology, environmental history, political economy and urban political ecology.
ContributorsDeclet-Barreto, Juan (Author) / Harlan, Sharon L (Thesis advisor) / Bolin, Bob (Thesis advisor) / Hirt, Paul (Committee member) / Boone, Christopher (Committee member) / Arizona State University (Publisher)
Created2013
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The State of California has made great strides in reducing greenhouse gas (GHG) emissions through mandated, rate-payer funded Investor Owned Utility (IOU) electricity Demand Side Management (DSM) programs. This study quantifies the amount of reduced GHG emissions in Arizona that result from DSM in that state, as well as the

The State of California has made great strides in reducing greenhouse gas (GHG) emissions through mandated, rate-payer funded Investor Owned Utility (IOU) electricity Demand Side Management (DSM) programs. This study quantifies the amount of reduced GHG emissions in Arizona that result from DSM in that state, as well as the DSM reductions within Southern California Edison (SCE), Pacific Gas and Electric (PG&E;), and San Diego Gas and Electric (SDG&E;) during the 2010 through 2012 California Public Utilities Commission (CPUC) DSM program cycle. To accomplish this quantification, it develops a model to allocated GHG emissions based on "operating margin" resources requirements specific to each utility in order to effectively track, monitor, and quantify avoided emissions from grid-based utility resources. The developed model estimates that during the 2010-2012 program cycle, 5,327.12 metric tons (MT) of carbon dioxide equivalents (CO2e) in GHG reductions (or 1.8 percent of total reductions) can be attributed to reduced demand from Arizona--based resources by California IOUs. By focusing on the spatial context of GHG emission reductions, this study models and quantifies the spill-over effect of California's regulatory environment into neighboring states.
ContributorsLandry, Bryan (Author) / Pasqualetti, Martin J. (Thesis advisor) / Pijawka, K. David (Committee member) / Hirt, Paul (Committee member) / Arizona State University (Publisher)
Created2013
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This dissertation explores how the written word and natural and cultural landscapes entwine to create a place, the process by which Arizona's landscapes affected narratives written about the place and how those narratives created representations of Arizona over time. From before Arizona became a state in 1912 to the day

This dissertation explores how the written word and natural and cultural landscapes entwine to create a place, the process by which Arizona's landscapes affected narratives written about the place and how those narratives created representations of Arizona over time. From before Arizona became a state in 1912 to the day its citizens celebrated one hundred years as a state in 2012, words have played a role in making it the place it is. The literature about Arizona and narratives drawn from its landscapes reveal writers' perceptions, what they believe is important and useful, what motivates or attracts them to the place. Those perceptions translated into words organized in various ways create an image of Arizona for readers. I explore written works taken at twenty-five year intervals--1912 and subsequent twenty-five year anniversaries--synthesizing narratives about Arizona and examining how those representations of the place changed (or did not change). To capture one hundred years of published material, I chose sources from several genres including official state publications, newspapers, novels, poetry, autobiography, journals, federal publications, and the Arizona Highways magazine. I chose sources that would have been available to the reading public, publications that demonstrated a wide readership. In examining the words about Arizona that have been readily available to the English-reading public, the importance of the power of the printed word becomes clear. Arizona became the place it is in the twenty-first century, in part, because people with power--in the federal and state governments, boosters, and business leaders--wrote about it in such a way as to influence growth and tourism sometimes at the expense of minority groups and the environment. Minority groups' narratives in their own words were absent from Arizona's written narrative landscape until the second half of the twentieth century when they began publishing their own stories. The narratives about Arizona changed over time, from literature dominated by boosting and promotion to a body of literature with many layers, many voices. Women, Native American, and Hispanic narratives, and environmentalists' and boosters' words created a more complex representation of Arizona in the twenty-first century, and more accurately reflected its cultural landscape, than the Arizona represented in earlier narratives.
ContributorsEngel-Pearson, Kimberli (Author) / Pyne, Stephen (Thesis advisor) / Hirt, Paul (Thesis advisor) / Adamson, Joni (Committee member) / Arizona State University (Publisher)
Created2014
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Description
Growers and the USDA showed increasing favor for agricultural chemicals over cultural and biological forms of pest control through the first half of the twentieth century. With the introduction of DDT and other synthetic chemicals to commercial markets in the post-World War II era, pesticides became entrenched as the primary

Growers and the USDA showed increasing favor for agricultural chemicals over cultural and biological forms of pest control through the first half of the twentieth century. With the introduction of DDT and other synthetic chemicals to commercial markets in the post-World War II era, pesticides became entrenched as the primary form of pest control in the industrial agriculture production system. Despite accumulating evidence that some pesticides posed a threat to human and environmental health, growers and government exercised path-dependent behavior in the development and implementation of pest control strategies. As pests developed resistance to regimens of agricultural chemicals, growers applied pesticides with greater toxicity in higher volumes to their fields with little consideration for the unintended consequences of using the economic poisons. Consequently, pressure from non-governmental organizations proved a necessary predicate for pesticide reform. This dissertation uses a series of case studies to examine the role of non-governmental organizations, particularly environmental organizations and farmworker groups, in pesticide reform from 1962 to 2011. For nearly fifty years, these groups served as educators, communicating scientific and experiential information about the adverse effects of pesticides on human health and environment to the public, and built support for the amendment of pesticide policies and the alteration of pesticide use practices. Their efforts led to the passage of more stringent regulations to better protect farmworkers, the public, and the environment. Environmental organizations and farmworker groups also acted as watchdogs, monitoring the activity of regulatory agencies and bringing suit when necessary to ensure that they fulfilled their responsibilities to the public. This dissertation will build on previous scholarly work to show increasing collaboration between farmworker groups and environmental organizations. It argues that the organizations shared a common concern about the effects of pesticides on human health, which enabled bridge-builders within the disparate organizations to foster cooperative relationships. Bridge-building proved a mutually beneficial exercise. Variance in organizational strategies and the timing of different reform efforts limited, but did not eliminate, opportunities for collaboration. Coalitions formed when groups came together temporarily, and then drifted apart when a reform effort reached its terminus, leaving future collaboration still possible.
ContributorsTompkins, Adam (Author) / Hirt, Paul (Thesis advisor) / Rome, Adam (Committee member) / Adamson, Joni (Committee member) / Rosales, F (Committee member) / Arizona State University (Publisher)
Created2011
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The rights of American Indians occupy a unique position within the legal framework of water allocations in the western United States. However, in the formulation and execution of policies that controlled access to water in the desert Southwest, federal and local governments did not preserve the federal reserved water rights

The rights of American Indians occupy a unique position within the legal framework of water allocations in the western United States. However, in the formulation and execution of policies that controlled access to water in the desert Southwest, federal and local governments did not preserve the federal reserved water rights that attached to Indian reservations as part of their creation. Consequentially, Indian communities were unable to access the water supplies necessary to sustain the economic development of their reservations. This dissertation analyzes the legal and historical dimensions of the conflict over rights that occurred between Indian communities and non-Indian water users in Arizona during the second half of the twentieth century. Particular attention is paid to negotiations involving local, state, federal, and tribal parties, which led to the Congressional authorization of water rights settlements for several reservations in central Arizona. The historical, economic, and political forces that shaped the settlement process are analyzed in order to gain a better understanding of how water users managed uncertainty regarding their long-term water supplies. The Indian water rights settlement process was made possible through a reconfiguration of major institutional, legal, and policy arrangements that dictate the allocation of water supplies in Arizona.
ContributorsKilloren, Daniel (Author) / Hoerder, Dirk (Thesis advisor) / Hirt, Paul (Committee member) / Smith, Karen (Committee member) / Arizona State University (Publisher)
Created2011
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The Energiewende aims to drastically reduce Germany’s greenhouse gas emissions, without relying on nuclear power, while maintaining a secure and affordable energy supply. Since 2000 the country’s renewable-energy share has increased exponentially, accounting in 2017 for over a third of Germany's gross electricity consumption. This unprecedented achievement is the result

The Energiewende aims to drastically reduce Germany’s greenhouse gas emissions, without relying on nuclear power, while maintaining a secure and affordable energy supply. Since 2000 the country’s renewable-energy share has increased exponentially, accounting in 2017 for over a third of Germany's gross electricity consumption. This unprecedented achievement is the result of policies, tools, and institutional arrangements intended to steer society to a low-carbon economy. Despite its resounding success in renewable-energy deployment, the Energiewende is not on track to meet its decarbonization goals. Energiewende rules and regulations have generated numerous undesired consequences, and have cost much more than anticipated, a burden borne primarily by energy consumers. Why has the Energiewende not only made energy more expensive, but also failed to bring Germany closer to its decarbonization goals? I analyzed the Energiewende as a complex socio-technical system, examining its legal framework and analyzing the consequences of successive regulations; identifying major political and energy players and the factors that motivated them to pursue socio-technical change; and documenting the political trends and events in which the Energiewende is rooted and which continue to shape it. I analyzed the dynamics and the loopholes that created barriers to transition, pushed the utility sector to the brink of dissolution, and led to such undesirable outcomes as negative wholesale prices and forced exports of electricity to Germany’s European neighbors. Thirty high-level energy experts and stakeholders were interviewed to find out how the best-informed members of German society perceive the Energiewende. Surprisingly, although they were highly critical of the way the transition has unfolded, most were convinced that the transition would eventually succeed. But their definitions of success did not always depend on achieving carbon-mitigation targets. Indeed, Germany jeopardizes the achievement of these targets by changing too many policy and institutional variables at too fast a pace. Good intentions and commitment are not enough to create economies based on intermittent energy sources: they will also require intensive grid expansion and breakthroughs in storage technology. The Energiewende demonstrates starkly that collective action driven by robust political consensus is not sufficient for steering complex socio-technical systems in desired directions.
ContributorsSturm, Christine (Author) / Sarewitz, Daniel (Thesis advisor) / Miller, Clark (Committee member) / Anderies, John (Committee member) / Hirt, Paul (Committee member) / Arizona State University (Publisher)
Created2018
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Since the late 1990s thousands of new Border Patrol agents, hundreds of miles of fencing, and additional immigration checkpoints have been added to the Mexico-U.S. border region. This unprecedented increase in boundary enforcement has strained existing relationships and created new separations between people and places in the borderlands. Southwestern Arizona

Since the late 1990s thousands of new Border Patrol agents, hundreds of miles of fencing, and additional immigration checkpoints have been added to the Mexico-U.S. border region. This unprecedented increase in boundary enforcement has strained existing relationships and created new separations between people and places in the borderlands. Southwestern Arizona has been impacted in especially dramatic ways, as the “hardening” of the international boundary has transformed conservation and indigenous spaces into theaters of drug interdiction and immigration control. This dissertation explores this transformation in southwestern Arizona, a region that was known by Spanish Colonial administrators as the Papaguería. With the community of Ajo at the center of the narrative, this dissertation explores the ways that industry and conservation have long shaped the social relations and the landscape of the region. The destruction of old borders, the creation of new borders, and the redefinition of space has been an ongoing process that continues to define some groups of people as insiders and other groups as outsiders. In the current era of border security echoes from earlier colonial encounters reverberate into the present, shaping landscapes and the lives of local residents in the contemporary Papaguería in significant ways.
ContributorsWarren, Scott (Author) / Arreola, Daniel D (Thesis advisor) / Klett, Mark (Committee member) / Hirt, Paul (Committee member) / McHugh, Kevin E (Committee member) / Arizona State University (Publisher)
Created2015
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The Grand Canyon is one of the most well-recognized natural features in the world, but it is also a cultural landscape. The way that the interpretation of this natural and cultural landscape has changed over time reveals a great deal about what values Americans place on scenic areas (especially national

The Grand Canyon is one of the most well-recognized natural features in the world, but it is also a cultural landscape. The way that the interpretation of this natural and cultural landscape has changed over time reveals a great deal about what values Americans place on scenic areas (especially national parks), how they want to experience them, what stories they want to be told there, and what cultural values were important in America at the time. This dissertation traces how the interpretation of Grand Canyon has changed over time from its earliest history until the present day, particularly focusing on National Park Service (NPS) interpretation of the site. It argues that the process involved in developing NPS interpretation at Grand Canyon National Park involved give and take between the local and national levels of the NPS, but also relied heavily on public engagement and interests. It also explores two sub themes, examining the degree to which Native American perspectives have been incorporated into Grand Canyon National Park interpretation, and how important individual personalities have been in shaping interpretation at the Park. Ultimately, the dissertation reveals that interpretation was a complex act, based upon dynamic interrelationships between author and audience, between professional objectives and public and private pressures, and between what messages the NPS wanted to convey and what visitors told the NPS they wanted to hear.
ContributorsGerke, Sarah Ruth (Author) / Hirt, Paul (Thesis advisor) / Warren-Findley, Janelle (Committee member) / Sargent Wood, Linda (Committee member) / Arizona State University (Publisher)
Created2010
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Natural resources management is a pressing issue for Native American nations and communities. More than ever before, tribal officials sit at the decision-making tables with federal and state officials as well as non-governmental natural resource stakeholders. This, however, has not always been the case. This dissertation focuses

Natural resources management is a pressing issue for Native American nations and communities. More than ever before, tribal officials sit at the decision-making tables with federal and state officials as well as non-governmental natural resource stakeholders. This, however, has not always been the case. This dissertation focuses on tribal activism to demonstrate how and why tribal sovereignty, self-determination, and treaty rights protection are tied closely to contemporary environmental issues and natural resources management. With the Klamath Tribes of southern Oregon as a case study, this dissertation analyzes how a tribal nation garnered a political position in which it could both indirectly influence and directly orchestrate natural resource management within and outside of its sovereign boundaries. The Klamath Tribes experienced the devastating termination policy in the 1950s. Termination stripped them of their federal status as an Indian tribe, the government services offered to recognized tribes, and their 1.2-million-acre reservation. Despite this horrific event, the Klamaths emerged by the 2000s as leading natural resource stakeholders in the Klamath River Watershed, a region ten times larger than their former reservation. The Klamaths used tools, such as their treaty and water rights, and employed careful political, legal, and social tactics. For example, they litigated, appropriated science, participated in democratic national environmental policy processes, and developed a lexicon. They also negotiated and established alliances with non-governmental stakeholders in order to refocus watershed management toward a holistic approach that promoted ecological restoration.

This study applies spatial theory and an ethnohistorical approach to show how traditional values drove the Klamaths’ contemporary activism. From their perspective, healing the land would heal the people. The Klamaths’ history illuminates the active roles that tribes have had in the institutionalization of the federal self-determination policy as federal agencies resisted recognizing tribes and working with them in government-to-government relationships. Through their efforts to weave their interests into natural resource management with state, federal, and non-governmental stakeholders, the Klamaths took part in a much larger historical trend, the increased pluralization of American society.
ContributorsBilka, Monika (Author) / Fixico, Donald L (Thesis advisor) / Hirt, Paul (Committee member) / Tsosie, Rebecca (Committee member) / Arizona State University (Publisher)
Created2015
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The Wasatch Front is an environmentally complex region, this area of northern Utah is mountainous and fertile enough to support a varied ecology. It has also supported healthy human populations. The marshy lands surrounding the gigantic lake antecedent to Great Salt Lake and Utah Lake provided food and resources for

The Wasatch Front is an environmentally complex region, this area of northern Utah is mountainous and fertile enough to support a varied ecology. It has also supported healthy human populations. The marshy lands surrounding the gigantic lake antecedent to Great Salt Lake and Utah Lake provided food and resources for early peoples. Then, as the climate warmed and drought set in, the early Fremont culture was apparently unable to adapt. Now, the Wasatch Front is home to the majority of Utah’s population, putting this sensitive environment under considerable strain. When early Mormon settlers arrived to colonize the area in the mid nineteenth century, they set to work making the Wasatch Front into their idea of paradise. They borrowed language from the Hebrew Bible to describe the changes they had made, claiming they had made the desert “blossom as the rose.” The purpose of this dissertation is to examine the origins and manifestations of this complex ethos of “blossoming,” how Mormon culture has conceived and reconceived it, and how climatic realities have shaped and are shaping it. On one hand, “blossoming” entails a form of stewardship that encourages conservation and temperance. On the other hand, Mormons have continually sought to incorporate American ideals of abundance and mastery over the natural elements. Today, population pressure combined with the prospect of megadrought makes these tensions even more salient and threatens to recapitulate the maladaptations of earlier cultures in a pattern of withering rather than blossoming. This dissertation illustrates how the ill consequences of “blossoming” have repeatedly forced a pattern of return to the ethos of stewardship and might do so again.
ContributorsEngland, Jonathan (Author) / Hirt, Paul (Thesis advisor) / Osburn, Katherine (Thesis advisor) / Rogers, Jedediah (Committee member) / Arizona State University (Publisher)
Created2021