Geography Commons^™

Just Open A Window: Understanding The Vulnerability To Summer Heat Of A Mountain Community In The Western United States, Missoula, Mt, Julie J. Tompkins

Graduate Student Theses, Dissertations, & Professional Papers

How do we conceptualize vulnerability or resiliency to a natural hazard when it has not historically been understood as such? This study focuses on Missoula, located in mountains of western Montana, which has steadily grown by 1-2% per year to almost 75,000 residents. The formerly temperate quality of its winters and summers has also been changing. Projections from the 2017 Montana Climate Assessment estimate the state will experience a 2-5°F increase in mean annual air temperature over the next two decades, prompting city and county officials to plan for scenarios not formerly in their consideration. Of further concern is the …

Glacial Deposits, Vol. 43, 2018, Department Of Geography, Geology, And The Environment

Glacial Deposits

Newsletter of the Department of Geography, Geology, and the Environment

Place Over Politics: Power, Strategy, Terrain, And Regime Type In Interstate War Outcomes, 1816-2003, Connor Joseph Sprayberry Sutton

Wayne State University Dissertations

While the study of war occurrence is among the primary considerations of the field of international relations, only recently has attention turned towards the study of war outcomes. This attention is best represented by the democratic victory proposition, which suggests that democracies win the majority of their wars by virtue of being democratic. However, elements of this study are currently incipient. In turn, this dissertation generates a novel set of variables to measure the impact of terrain on war outcomes, including measures of spatial extent, topographic heterogeneity, and land cover heterogeneity. These metrics are generated for all 94 interstate wars …

Community Development Corporations In The Right-Sizing City: Remaking The Cdc Model Of Urban Redevelopment, Melissa Heil

Faculty Publications - Geography, Geology, and the Environment

Right-sizing planning operates on a notion that investing in the built environment throughout the entirety of a depopulating city is detrimental to the city’s redevelopment and long-term stability. This notion is antithetical to the activities of many community development corporations (CDCs) that build and manage physical development projects in distressed and depopulating neighborhoods. As such, in cities dominated by right-sizing efforts, the role of CDCs is being reconsidered and reinvented. This article considers the case of Detroit’s community development system, identifying the constraints and opportunities for CDCs under the new political economic context of right-sizing. The findings demonstrate that the …

Volunteer Environmental Stewardship And Affective Labour In Philadelphia, Alec Foster

Faculty Publications - Geography, Geology, and the Environment

Recent research has critically evaluated the rapid growth of volunteer urban environmental stewardship. Framings of this phenomenon have largely focused upon environmentality and/or neoliberal environments, unfortunately often presenting a totalising picture of the state and/or market utilising power from above to create environmental subjects with limited agency available to local citizens. Based upon qualitative research with volunteer urban environmental stewards in Philadelphia, affective labour is proposed as an alternative explanation for participation. Stewards volunteered their time and labour due to the intense emotional attachments they formed with their neighbourhoods, neighbours, and nonhuman others in relationships of affective labour. Volunteer urban …

Crop Height Estimation With Unmanned Aerial Vehicles, Carrick Detweiler, David Anthony, Sebastian Elbaum

School of Computing: Faculty Publications

An unmanned aerial vehicle (UAV) can be configured for crop height estimation. In some examples, the UAV includes an aerial propulsion system, a laser scanner configured to face downwards while the UAV is in flight, and a control system. The laser scanner is configured to scan through a two-dimensional scan angle and is characterized by a maxi mum range. The control system causes the UAV to fly over an agricultural field and maintain, using the aerial propulsion system and the laser scanner, a distance between the UAV and a top of crops in the agricultural field to within a programmed …

Science At Engineer Cantonment, Hugh H. Genoways, Brett C. Ratcliffe, Carl R. Falk, Thomas E. Labedz, Paul R. Picha, John R. Bozell

University of Nebraska State Museum: Mammalogy Papers

Conclusions

It is our contention that Thomas Say, Titian Peale, Edwin James, and their colleagues of the Stephen Long Expedition of 1819–1820 were heavily engaged in scientific research, which took the form of the first biodiversity inventory undertaken in the United States. This accomplishment has been overlooked both by biologists and historians, but it should rank among the most significant accomplishments of the expedition. The results of this inventory continue to inform us today about environmental, faunal, and floral changes along the Missouri River in an area that is known to be an ecotone between the deciduous forests of the …

American Black Bear Den-Site Selection And Characteristics In An Urban Environment, Toryn L. J. Schafer, Stewart W. Breck, Sharon Baruch-Mordo, David L. Lewis, Kenneth R. Wilson, Julie S. Mao, Thomas L. Day

United States Department of Agriculture Wildlife Services: Staff Publications

Selection of den sites is a crucial aspect of American black bear (Ursus americanus) life history. High-quality dens provide thermal insulation, protection from disturbance, suitable environment for parturition and cub development, and proximity to available forage upon emergence. Black bears are increasingly coexisting with people in human-dominated landscapes; however, little is known about whether urban environments influence characteristics of dens and den site selection. Our objective was to determine the effect of housing density (a proxy for human activity and availability of anthropogenic resources) on selection of den sites in years of good and poor natural forage.We additionally …

Exploring Spatial And Temporal Variability Of Soil And Crop Processes For Irrigation Management, Javier Reyes

Theses and Dissertations--Plant and Soil Sciences

Irrigation needs to be applied to soils in relatively humid regions such as western Kentucky to supply water for crop uptake to optimize and stabilize yields. Characterization of soil and crop variability at the field scale is needed to apply site specific management and to optimize water application. The objective of this work is to propose a characterization and modeling of soil and crop processes to improve irrigation management. Through an analysis of spatial and temporal behavior of soil and crop variables the variability in the field was identified. Integrative analysis of soil, crop, proximal and remote sensing data was …

Cross-Scale Correlation Between In Situ Measurements Of Canopy Gap Fraction And Landsat-Derived Vegetation Indices With Implications For Monitoring The Seasonal Phenology In Tropical Forests Using Modis Data, Nicholas Cuba, John Rogan, Deborah Lawrence, Christopher A. Williams

Geography

Deciduousness in dry tropical forests results in substantial seasonal changes to canopy gap fractions. The characterization of such structural properties over large areas is necessary for understanding energy and nutrient distribution within forest ecosystems. However, a spatial extrapolation of measurements from relatively few, spatially-concentrated field observations can yield estimated values that have questionable accuracy and precision at regional scales. This paper uses linear regression models to compare measurements of canopy gap fraction from in situ digital cover photography in the dry tropical forest of the Southern Yucatán, Mexico, to measurements of seasonal vegetation change based on three vegetation indices-the Normalized …

Upside-Down Fluxes Down Under: Co2 Net Sink In Winter And Net Source In Summer In A Temperate Evergreen Broadleaf Forest, Alexandre A. Renchon, Anne Griebel, Daniel Metzen, Christopher A. Williams, Belinda Medlyn, Remko A. Duursma, Craig V.M. Barton, Chelsea Maier, Matthias M. Boer, Peter Isaac, David Tissue, Victor Resco De Dios, Elise Pendall

Geography

Predicting the seasonal dynamics of ecosystem carbon fluxes is challenging in broadleaved evergreen forests because of their moderate climates and subtle changes in canopy phenology. We assessed the climatic and biotic drivers of the seasonality of net ecosystem-atmosphere CO2 exchange (NEE) of a eucalyptus-dominated forest near Sydney, Australia, using the eddy covariance method. The climate is characterised by a mean annual precipitation of 800mm and a mean annual temperature of 18°C, hot summers and mild winters, with highly variable precipitation. In the 4-year study, the ecosystem was a sink each year (-225gCm-2yr-1 on average, with a standard deviation of 108gCm-2yr-1); …

Evaluating Wildlife Vulnerability To Mercury Pollution From Artisanal And Small-Scale Gold Mining In Madre De Dios, Peru, K. E. Markham, Florencia Sangermano

Geography

Illegal, artisanal and small-scale gold mining (ASGM) often occurs in remote highly biodiverse areas, such as the Madre de Dios region of Peru. Mercury used in gold mining bioaccumulates in the environment and poses developmental, hormonal, and neurological threats to wildlife. The impact of ASGM on biodiversity remains largely unknown. We used geographic information science to create a spatial model of pollution risk from mining sites, in order to predict locations and species assemblages at risk. Multicriteria evaluation was used to determine how flow accumulation, distance from mining areas, total suspended sediment load, and soil porosity influenced the vulnerability of …

Measurements And Observations In The Xxi Century (Moxxi): Innovation And Multi-Disciplinarity To Sense The Hydrological Cycle, Flavia Tauro, John Selker, Nick Van De Giesen, Tommaso Abrate, Remko Uijlenhoet, Maurizio Porfiri, Salvatore Manfreda, Kelly Caylor, Tommaso Moramarco, Jerome Benveniste, Giuseppe Ciraolo, Lyndon Estes, Alessio Domeneghetti, Matthew T. Perks, Chiara Corbari, Ehsan Rabiei, Giovanni Ravazzani, Heye Bogena, Antoine Harfouche, Luca Broccai, Antonino Maltese, Andy Wickert, Angelica Tarpanelli, Stephen Good, Jose Manuel Lopez Alcala, Andrea Petroselli, Christophe Cudennec, Theresa Blume, Rolf Hut, Salvatore Grimaldia

Geography

To promote the advancement of novel observation techniques that may lead to new sources of information to help better understand the hydrological cycle, the International Association of Hydrological Sciences (IAHS) established the Measurements and Observations in the XXI century (MOXXI) Working Group in July 2013. The group comprises a growing community of techenthusiastic hydrologists that design and develop their own sensing systems, adopt a multidisciplinary perspective in tackling complex observations, often use low-cost equipment intended for other applications to build innovative sensors, or perform opportunistic measurements. This paper states the objectives of the group and reviews major advances carried out …

Regional Climate Model Evaluation System Powered By Apache Open Climate Workbench V1.3.0: An Enabling Tool For Facilitating Regional Climate Studies, Huikyo Lee, Alexander Goodman, Lewis Mcgibbney, Duane E. Waliser, Jinwon Kim, Paul C. Loikith, Peter B. Gibson, Elias C. Massoud

Geography Faculty Publications and Presentations

The Regional Climate Model Evaluation System (RCMES) is an enabling tool of the National Aeronautics and Space Administration to support the United States National Climate Assessment. As a comprehensive system for evaluating climate models on regional and continental scales using observational datasets from a variety of sources, RCMES is designed to yield information on the performance of climate models and guide their improvement. Here, we present a user-oriented document describing the latest version of RCMES, its development process, and future plans for improvements. The main objective of RCMES is to facilitate the climate model evaluation process at regional scales. RCMES …

Temporal Trends In Human Vulnerability To Excessive Heat, Scott C. Sheridan, Michael J. Allen

Political Science & Geography Faculty Publications

Over recent decades, studies have examined various morbidity and mortality outcomes associated with heat exposure. This review explores the collective knowledge of the temporal trends of heat on human health, with regard to the hypothesis that humans are less vulnerable to heat events presently than in the past. Using Web of Science and Scopus, the authors identified all peer-reviewed articles that contained keywords on human impact (e.g. mortality, morbidity) and meteorological component (e.g. heat, heatwave). After sorting, a total of 71 articles, both case studies and epidemiological studies, contained explicit assessments of temporal trends in human vulnerability, and thus were …

Cohens On The Move: Jewish Residential Dynamics In Cincinnati, Ohio, 1940-2000, Carmi J. Neiger

Graduate Research Theses & Dissertations

In the 1960s and 1970s, as many large US cities experienced rapid racial and ethnic demographic shifts, the intra-urban residential settlement and migration patterns of American Jews came to the attention of sociologists and urbanists. Although the interest in this population has waned in favor of more recent immigrant groups, patterns of Jewish residential dynamics continue to evolve, reflecting changes over time in both Jewish religious and ethnic identity and assimilation into mainstream American society. The lack of Census data identifying households by religious affiliation requires an alternative approach to the study of this group. In the first section of …

In Case Of Emergency: Local Medical Services And Emergency Air Transportation In Southeast Alaska, Kourtney B. Johnson

Graduate Student Theses, Dissertations, & Professional Papers

Alaska, often referred to as “The Last Frontier”, is a vast, geographically diverse and sparsely settled landscape. Although many popular reality shows tend to exaggerate and dramatize life in Alaska, they do point to an important fact: when an emergency occurs, or someone experiences serious health complications, immediate access to sufficient medical services may not be available. Much of the state’s population faces barriers to accessing needed medical care due to large distances between communities and limited road networks due to coastal locations or challenging terrain.

Using Penchansky and Thomas’s five components of Access Theory (1981), this thesis explores factors …

Zoning And Complementary Incentives To Protect Farmland: A Case For Missoula County, Kaitlin Mccafferty

Graduate Student Theses, Dissertations, & Professional Papers

Urban sprawl reflects an inefficient use of land that diminishes both rural landscapes and quality of life turning farms, ranches and open space into siloed suburban communities. This results in less walkable cities with more traffic and air pollution, among other negative consequences. Farmland constitutes a particularly important resource that often faces degradation or loss due to sprawl. Higher quality agricultural soils are particularly desirable for development because they are flat and well-drained. Farmland is also important for urban communities concerning food security, environmental health, and economic well being. As American cities continue to grow, farmland around urban areas has …

Managing Mining Pollution: The Case Of Water Quality Governance In The Transboundary Kootenai/Y, Ashley Juric

Graduate Student Theses, Dissertations, & Professional Papers

This thesis addresses current water quality management challenges in the transboundary Kootenai/y River Basin, and how these challenges are shaped by historical, economic, political, and social factors. The water quality of this basin, both in the United State and Canada, has been severely affected by coal mining that has occurred in British Columbia over the last hundred years and continues to be threatened by several proposed mining expansion projects. The goals of this research are to uncover the forces shaping water management and to determine the potential for interested and affected parties to participate in crafting water quality protection measures. …

40 Years On The International Flathead: An Assessment Of Transboundary River Governance, Jedd Sankar-Gorton

Graduate Student Theses, Dissertations, & Professional Papers

Global population growth, climate change, and industrialization, are putting extreme pressures on worldwide freshwater supplies (Cosens 2010). Of the global freshwater supplies, transboundary water sources play a crucial role in sustaining populations. Over 40% of humans on Earth rely on a transboundary river or lake for access to water, and 90% of the world’s population lives in countries that share bodies of water with at least one other country (UN 2008). Taken together, the motivations for improving governance of transboundary water systems have never been stronger. To meet the challenges associated with transboundary water governance, researchers working at multiple scales …

Greening Of The Arctic: Plot-Scale Analysis Of Interactions Between Climate, Vegetation, And Permafrost At Toolik Lake, Alaska (1995 - 2017), Brianna Rick

Graduate Student Theses, Dissertations, & Professional Papers

Air temperatures across the Arctic have increased in recent decades, and through complex feedbacks, vegetation and permafrost (frozen ground) are actively responding as climate warming continues. This study investigates the trends and interactions of observed air, soil-surface temperature (SST), and active-layer thickness (ALT) at Toolik Lake on the Alaskan North Slope between 1995 and 2017, as well as vegetation change over time.

Time series between 1995 and 2017 at CALM site U12B, a 1 ha plot near Toolik Lake, reveal an increase (0.50 °C/decade) in mean summer (Jun-Aug) air temperatures and a decrease (­0.23 °C/decade) in mean summer SST. In …

Public Private Partnerships For Economic Development: Impacts On Shrinking Cities, Brenden M. Geraghty

Graduate Dissertations and Theses

Over the last few decades in the United States, Public Private Partnerships have become essential devices to city development and redevelopment. This study examines the uses of Public Private Partnerships within the discipline of Economic Development. The cities researched are located in the Rust Belt region of the United States and their economies have experienced a drastic decline over the last half-century. This research reveals the economic impacts on these shrinking cities that have had programs and projects implemented through the agreements and workings of the public and private sectors. Several factors are analyzed to determine what constitutes the (un)successful …

Affective Risk Perception In Automotive Environments, Dane Atkins

Dissertations and Theses @ UNI

Traversing the automotive environment exposes drivers to a risk of property damage, injury, and death. This risk varies across the road network. This research questions whether drivers are capable of accurately perceiving their own exposure to risk in this environment. Analysis begins with an assessment of risk exposure at roadway intersections (as measured in terms of crash frequency, severity, and mixed-weighting methods). This assessment provides risk indices for a cross-section of road intersections across an urban Iowa community. These indices are then used in the development of an experimental visual cognition survey used to record risk perceptions of roadway sites …

Spatial Disparities And Socio-Economic Conditions : A Food Desert Analysis Of Greater Des Moines, Iowa, David Jensen

Dissertations and Theses @ UNI

Current research suggests that socioeconomic makeup of geographic areas within a city has implications on location and accessibility of food retail stores. Disadvantaged areas with relatively poor access to healthy and affordable food are what literature has identified as “food deserts”. The purpose of this research is to explore the relationships between geographic areas with relatively low socioeconomic characteristics and food stores within the greater Des Moines, Iowa area. By way of survey, grocery and convenience stores are measured on their healthy food quality, advertisements, and other factors. GIS techniques are then used to measure accessibility to stores by low …

Tweets About Tornado Warnings: A Spatiotemporal And Content Analysis, Raelene C. Campbell

Theses and Dissertations

Throughout the United States, tornadoes frequently occur throughout the entire year. With each tornado there is a tornado warning that the National Weather Service (NWS) issues with a goal of protecting life and property. By using social media, these messages quickly reach the public. By analyzing Twitter data, this study aims to gain a spatiotemporal understanding of tweets, including when and where they most frequently occur. Most tweets occur within the warning time (temporal) and inside the warning polygon (spatial). To gain a better understanding of the information the tweet contains, a content analysis shows key warning characteristics such as …

From Rhetoric To Response: Climate Change, Conflict, And Development In Karamoja, Uganda, Daniel Abrahams

Theses and Dissertations

This dissertation addresses the broad question: How do the discourses of climate change and conflict travel across time and space to become policy, programming, and ultimately a development initiative that exist on the ground? To answer this question, I broke the research into three separate papers. The first examines how the US policy community approaches, understands and seeks to address the discourses of climatesecurity. The second examines the ways in which climate change affects conflict outcomes in Karamoja, Uganda. And the third, using the efforts of Mercy Corps in Karamoja as a case study, examines the realities and opportunities in …

Anthropogenic Influences On Sedimentation In The Chicken Creek Watershed Of South Carolina, Tyler L. Dearman

Theses and Dissertations

Anthropogeomorphic changes in response to destructive agricultural practices followed the arrival of European settlers into the Americas. The southeastern Piedmont physiographic region of the USA was severely affected by erosion and sedimentation following settlement in the 1700s and farming up through the 1930s. Deep floodplain aggradation formed uninterrupted alluvial deposits that extended many km. This research examines anthropogenic impacts of land-use change on valley bottom sedimentation in the Chicken Creek Watershed of South Carolina. Abrupt contacts between pre-settlement floodplain soils and a thick overburden of legacy sediment are common throughout the two-km study reach and provide clear evidence of extensive …

Internal Gravity Wave Detection During The 21 August 2017 Total Solar Eclipse, Michael J.W. Stewart

Theses and Dissertations

Total solar eclipses supply both visual captivation and a controlled meteorological experiment through a sudden decrease in solar radiation. However, along with commonly expected changes in weather conditions, prior research suggests an adjustment of atmospheric dynamics caused by both a decrease in local incident solar radiation and the Moon’s sweeping shadow across the Earth at supersonic speed. The result is the potential production of internal gravity waves, which transfer both energy and momentum vertically to and from the upper levels of the atmosphere. A series of radiosondes were launched before, during, and after the 21 August 2017 eclipse in Batesburg, …

Analysis Of Evacuation Behaviors And Departure Timing For October 2016’S Hurricane Matthew, Erika O. Pham

Theses and Dissertations

During a hurricane, an individual’s risk perception does not remain static. Spatial and temporal variations of a hurricane will shift perceptions of risk, and complicating this dynamic are information-seeking processes increasingly reliant on the individual’s self-motivated interpretation of information sources. Initial evacuation resistance or willingness could change even after evacuations are ordered, affecting evacuation preferences and departure times. Because Hurricane Matthew’s continually shifting track had virtually nonstop coverage, evacuation decisions were also being modified as residents either grew more or less certain of their safety.

This research investigates the evacuation behaviors associated with Hurricane Matthew in October of 2016. It …

“We’Re Being Left To Blight”: Green Urban Development And Racialized Space In Kansas City, Chhaya Kolavalli

Theses and Dissertations--Anthropology

In this dissertation, I explore ‘green’ urban development and urban agriculture projects from the perspective of residents of an African American majority neighborhood in Kansas City—who reside in an area referred to as a ‘blighted food desert’ by local policy makers. In Kansas City, extensive city government support exists for urban agricultural projects, which are touted not just as a solution to poverty associated issues such food insecurity and obesity, but also as a remedy for ‘blight,’ violence and crime, and vacant urban land. Specific narratives of Kansas City’s past are used to prop up and legitimate these future visions …