Physical Sciences and Mathematics Commons^™

The Phylogeography Of Rare Central Tennessee Glade Endemics Trifolium Calcaricum And Viola Egglestonii, Rachel Ann Lyman

Arts & Sciences Electronic Theses and Dissertations

Endemic species are range-restricted to a particular type of habitat and generally occur in a few small populations. Often endemic species are threatened or endangered due to their geographic isolation and limited habitat breadth. Despite the fact that understanding factors that may have shaped the evolutionary history of a species with a narrow distribution can provide important insights for their management and conservation, little is known about the historical forces that gave rise to many endemic species. Endemic species can arise because of factors such as variation in climate, geographic barriers, and habitat specificity, or the combination of several of …

Landesque Capital And Community Organization In A Maya Economic Center: A Case Study At Salinas De Los Nueve Cerros, Guatemala, Alexander Ernesto Rivas

Arts & Sciences Electronic Theses and Dissertations

Many ancient Maya lowland cities developed water-rich landscapes that met the multiple needs of growing populations. The development of landesque capital, in which permanent changes in infrastructure, water procurement, and agricultural productivity are best understood at sites with a long history of occupation. Salinas de los Nueve Cerros was an ancient Maya center that was occupied for approximately 2000 years, surviving the ‘Maya Collapse.’ This site, located in the Maya lowlands, had ties to both highland and lowland communities through its primacy in exporting salt. However, what is not yet understood is whether the commercial population of Nueve Cerros practiced …

Testing Assumptions On The Relationship Between Humans And Their Environment: Case Studies From Cahokia Mounds, Illinois, Caitlin Gail Rankin

Arts & Sciences Electronic Theses and Dissertations

Many archaeologists argue that studying past human response to climate change can be helpful in informing future strategies to adapt to modern effects of climate change; however, archaeological research is rarely utilized in climate change policy. Much of archaeological research involves forming hypotheses to explain observations of past phenomena. However, the advancement of knowledge requires a back and forth between hypothesis forming and hypothesis testing. I argue that a lack of engagement in hypothesis testing has stalled the advancement in archaeological knowledge on the relationship between humans and their environment. Ultimately, it is this stall in the advancement of knowledge …

Self-Assembly Of Conducting Polymer Nano- And Microstructures For Energy Storage, Luciano Matteo Santino

Arts & Sciences Electronic Theses and Dissertations

Plastics are materials composed of many long chains of molecules with repeating subunits; strong interactions between neighboring molecules lead to the material used throughout the world. Plastics are commonly thought to be insulating, in stark contrast to the conductivity of metals. However, certain polymer structures were discovered to exhibit semiconducting properties, the subject of the Nobel Prize in Chemistry in 2000. Conducting polymers have a unique molecular structure with an electronically conjugated backbone, allowing electrons to freely travel both across the chain and in between chains. This work focuses on controlling the kinetics of the reaction between the vapors of …

Understanding The Meaning Of Microbialites As Geobiological Archives, Scott Randall Beeler

Arts & Sciences Electronic Theses and Dissertations

Microbialites, sedimentary structures formed from the interaction of microorganisms with their environment, provide one of the oldest and most complete records of life on Earth, making them an invaluable tool in the field of geobiology. However, much of the information that could be gained from microbialites remains obscured due to our incomplete understanding of how variability in the microbial, geochemical, and physical processes driving their formation affect their morphological and geochemical characteristics. Modern environments of active microbialite formation provide the opportunity to study the relationship between variability in these environmental processes and the resultant mineral product and can act as …

Preventing Extinction Of At-Risk Plant Species In A Complex World, Holly Lee Bernardo

Arts & Sciences Electronic Theses and Dissertations

Earthճ current biodiversity crisis is now considered a true mass extinction event, with species level extinction rates well above background rates and population level extinction rates orders of magnitude more common that species extinctions. There are many threats driving this loss of biodiversity. How each threat impacts the viability of a species is highly context dependent, but all are anthropogenic in origin and so as the human population continues to increase, so too will the pressure of these threats on our natural systems. Ultimately, how much a threat decreases the viability of a species depends on how that threat influences …

Fundamental Controls On The Reactivity Of Aluminum Oxide And Hydroxide Surfaces: Contributions Of Surface Site Coordination States And Interfacial Water Structure, Tingying Xu

Arts & Sciences Electronic Theses and Dissertations

Chemical reactions at mineral-water interfaces are of great importance in many geological and environmental processes. Essential to many of these is adsorption because it directly controls contaminant fate and nutrient availability, promotes the nucleation and growth of minerals, initiates surface redox reactions, and plays a crucial role in carbon cycling and sequestration. These reactions occur at mineral surface sites having multiple possible coordination states that interact with both adsorbates and water. While general ion adsorption mechanisms and surface charging behaviors are well established, the roles of individual surface functional group types and water in affecting the structure and reactivity of …

Wild Primates In Documentary Films: Biodiversity, Behavior, And Pedagogical Applications, Crystal Marie Riley Koenig

Arts & Sciences Electronic Theses and Dissertations

The representation of wild primates in the nature documentary genre could have important implications for conservation and education. However, no prior research has looked at the content of this genre or its use in education. To fill this gap, the current research included a content analysis of all available documentaries focused on wild primates (n = 210) and a survey of 219 college-level anthropology instructors, with an emphasis on determining how primate biodiversity was portrayed, whether primate behavior was realistically depicted in documentaries, whether mistakes and inaccuracies were common, and how college instructors use primate documentaries as resources in their …

Dying Worlds: Environment, Ecology, And Empire In British Literature 1878-1919, Susanna Williams

Arts & Sciences Electronic Theses and Dissertations

This dissertation argues that models of approaching environmental crisis in late-nineteenth- and early-twentieth-century British literature have been obscured by a false, mid-twentieth century, American-centered genealogy of environmentalism. As Victorian scientists made discoveries about deep time, entropy, and tidal drag, scientific and popular writers in the following decades came to terms with ideas about an earth made unfit for human existence and humans’ imminent extinction. Writers grappled with feelings of loss and grief, and they felt disoriented by time scales and energetic processes that were beyond the scope of a single human life. This overwhelming information required them to take a …

Participation In Governance And Well-Being In The Yukon Flats, Jessica Charlene Black

Arts & Sciences Electronic Theses and Dissertations

This dissertation explains the relationship between participation in governance and well-being in the Yukon Flats. To garner a deeper understanding of this relationship, definitions of governance and well-being are sought from the participants, thus providing holistic, Indigenous definitions of these concepts. Both formal and informal governance are also explored to understand the important institutions that underpin these larger relationships. Lastly, this dissertation investigates the relationship between participation in traditional hunting, fishing, and gathering and well-being in the Yukon Flats. Qualitative methods, including semi-structured interviews, observations, and photographs are all used to document these relationships. Applied thematic analysis is used due …

Understanding Household, Network, And Organizational Drivers Of Adoption Of Cleaner Cooking Fuels In Rural India, Praveen Kumar

Arts & Sciences Electronic Theses and Dissertations

Adoption of evidence-based cleaner cooking systems such as Liquefied Petroleum Gas (LPG) is a crucial first step in eventually providing a sustainable solution for household air pollution. To promote adoption of LPG in below poverty line households, we require evidence-based implementation strategies. For these strategies to be feasible and scalable, they need to be grounded in a thorough understanding of the household, network, and organizational level drivers of LPG adoption. However, systematic research on adoption of LPG by poor communities is still lacking.

The overall objective of the study was to develop a better understanding about new insights on the …

How Do Environmental Changes And Shared Cultural Experiences Impact The Health Of Indigenous Peoples In South Louisiana?, Shanondora M. Billiot

Arts & Sciences Electronic Theses and Dissertations

Global environmental change is an ongoing and complex social problem that will continue to permeate all spheres of life on earth (Moran, 2010). Not all communities experience social and economic consequences of environmental change at the same level (Adger, 2006a; Cutter, Boruff, & Shirley, 2003; Gillespie, 2010; Nicholls et al., 2007; Vogel, Moser, Kasperson, & Dabelko, 2007). The variability of vulnerability, or potential for exposure or harm, stems from proximity to fragile ecosystems as well as social and economic differences across communities (Boruff, Emrich, & Cutter, 2005). Additionally, environmental changes are projected to have adverse impacts on marginalized populations through …

Environmentalism And The Music Of Sir Peter Maxwell Davies, Karen Olson

Arts & Sciences Electronic Theses and Dissertations

Music critics and scholars frequently present British composer Sir Peter Maxwell Davies (1934-2016) as a green composer, but little work has been done to determine the kinds of environmentalism his music supports. This dissertation focuses on the relationship between Davies’s music and British environmentalism, both as protest music and as government policy. Drawing on such diverse fields as philosophy of the environment, British political history, and environmental aesthetics, I examine how Davies’s music responded to the political climate of its times, and how its reception changed as certain environmental models, such as sustainable development, gained political relevance. Over the course …

Coexistence Of Confamilial, Folivorous Indriids, Propithecus Diadema And Indri Indri, At Betampona Strict Nature Reserve, Madagascar, Lana Kerker Oliver

Arts & Sciences Electronic Theses and Dissertations

In this dissertation, I examine how two confamilial and ecologically similar indriids, indri (Indri indri), and diademed sifakas (Propithecus diadema) maintain coexistence in Betampona Nature Reserve (BNR), an eastern lowland rainforest in Madagascar. These two species occur sympatrically throughout much of their species ranges and are similarly-sized folivorous primates. As anatomic folivores, they present an opportunity to investigate how niche differentiation and resource partitioning allow two sympatric primate species with similar feeding patterns to coexist. I examined coexistence strategies and the general behavioral ecology of each species by examining their activity patterns, dietary profiles, home range use, and daily path …

The Evolution Of Igneous Rocks On The Moon: Insights From Lunar Meteorites And Apollo 12, Sarah Valencia

Arts & Sciences Electronic Theses and Dissertations

Lunar samples are the “ground truth” that anchor our knowledge of lunar geology. Lunar rocks present many challenges in that they are often brecciated (composed of multiple rock types), and their location of formation on the Moon is not always known. The brecciated nature of lunar samples also has advantages – multiple lithologies that have a related petrogenetic history can occur in the same sample, allowing us to trace the petrogenetic history of evolving magmatic systems. In this dissertation, I examine two evolved magmatic systems, using samples from the Northwest Africa (NWA) 773 clan of lunar meteorites and Apollo 12 …

The Impacts Of Climate Change On The World’S Economic, Political, And Demographic Structures, Dino Kanlic

Arts & Sciences Electronic Theses and Dissertations

Climate change will have negative impacts on the political, economic, and demographic structures of society. These include a rise in ethnic tensions in the Indian Sub Continent, massive immigration to Europe, regional economic collapse and political destabilization in Africa, the inundation of island nations and economic losses in the Americas among many other changes which will combine to destabilize humanity for generations. International affairs has failed to come up with a solution because global warming is a universal prevention focused problem that trades short term gains for long term losses. Global warming will be solved by the onset of grid …