Geography Commons^™

Scaling Up The Relevance Of Land-Sea Connections In Coastal Bacteria Pollution Vulnerability, Bea E. Van Dam

Electronic Theses and Dissertations

Bacteria pollution closures of Maine’s coastal shellfish harvest areas have substantial negative consequences for coastal businesses and communities. Sustainability solutions for Maine’s shellfish harvesting areas and businesses require new types of knowledge and information to protect water quality and public health while avoiding unnecessary fishery closures. Coastal management agencies have interests in tools to support science-based management decision-making related to pollution and sustainability solutions for businesses and communities.

Prior research into land-sea connections has demonstrated uses of geographic information and statistical methods to facilitate management and science communication. Research in Maine has focused on identification and comparison of attributes influencing …

Quantifying Spatial Heterogeneity Of Wild Blueberries And Crop Water Stress Monitoring Using Remote Sensing Technologies, Kallol Barai

Electronic Theses and Dissertations

The wild blueberry is one of the major crops of Maine, with significant economic value and potential health benefits. Due to global climate change, drought impacts have been increasing significantly in recent years in the northeast region of the USA, causing significant economic losses in the agricultural sectors. It has been predicted to increase further in the future. Changing patterns of the elevated atmospheric temperatures, increased rainfall variabilities, and more frequent drought events have made the wild blueberry industry of Maine vulnerable, suggesting the adoption of novel approaches to mitigate the negative impacts of global climate changes. Also, wild blueberry …

Climate Care: Pathways For Coastal Community Resilience, Jessica Reilly-Moman

Electronic Theses and Dissertations

Climate change increasingly impacts coasts worldwide. The ability of coastal ecosystems and the human communities who are part of them to absorb disturbance and maintain function or transform, or resilience, is of critical importance to managing these impacts. However, to date, climate resilience largely has focused on biophysical impacts and technocratic solutions, while issues of social and environmental justice and human well-being become more acute and entrenched. Consequently, I ask: How can coastal communities cope with climate change? To answer this question, I leverage traditional, emergent, and novel social research methods in Mexico, Central America, and Maine. Using ethnography, interviews, …

Using Photovoice To Navigate Social-Ecological Change In Coastal Maine: A Case Study On Visibility, Visuality, And Visual Literacy, Kevin P. Duffy

Electronic Theses and Dissertations

Media representations of the environment support specific cultures of viewing that can create expectations about how to observe social-ecological interactions in everyday life. While public perceptions may appear, in some cases, to reflect these normative representations, more critical and participatory approaches to environmental research and management have begun to complicate these representations as they are negotiated through intrapersonal, interpersonal, and group communication. Working from a visual cultural approach that interrogates issues of visibility, visuality, and visual literacy, this dissertation theorizes how coastal residents represent their own observations and experiences of environmental change through photography and what impact their views have …

To Know The Land With Hands And Minds: Negotiating Agricultural Knowledge In Late-Nineteenth-Century New England And Westphalia, Justus Hillebrand

Electronic Theses and Dissertations

Ever since the eighteenth century, experts have tried to tell farmers how to farm. The agricultural enlightenment in Europe marked the beginning of a long arc of new experts aiming to change agricultural knowledge and practice. This dissertation analyzes the pivotal period in the late nineteenth and early twentieth century in Germany and the United States when scientists, improvers, and market agents began to develop comprehensive ways to communicate agricultural innovation to farmers. In a functional approach to analyzing the negotiation of agricultural knowledge through its communication in things, words, and practices, this dissertation argues that the process of change …

The Holocaust In Białystok: Urban, Rural, And Forest Environments As Spaces Of Resistance, Survival, And Persecution, Dakota Gramour

Electronic Theses and Dissertations

During the German occupation of Poland in World War II, thousands of Jews escaped city or ghetto life by seeking refuge within rural villages or fleeing to the forests. Numerous factors shaped individual survivor experiences within these spaces. In particular, gender, age or familial status, environmental factors like weather conditions or terrain, as well as personal politics and language or technical skills, all molded how one could act or was forced to react in these spaces. This study emphasizes the unique two-way relationships between experience and three kinds of environments found in the Białystok District: the city of Białystok, small …

Use Of Gis To Find Optimum Locations For Anaerobic Digestion Or Composting Facilities In Maine, Usha Humagain

Electronic Theses and Dissertations

As per US EPA, in 2017, 41 million tons of food waste was generated, but only 6.3% was diverted from landfills (US EPA, 2020). When landfilled or incinerated, organic waste (food waste, sludge, manure, agricultural waste) causes environmental pollution through greenhouse gas emissions, land, water, and air pollution. In contrast, if we compost or digest organic waste, we can generate soil additives and a mixture of methane and carbon dioxide gas to produce electricity or energy. Both digestion and composting reduce greenhouse gas emissions, improve the land through additives, and boost the economy. Many countries are adopting anaerobic digestion and …

Integrating Local Ecology And Human Dimensions To Understand A Tidally Dynamic Ecosystem In Downeast Maine, Gabriella Marafino

Electronic Theses and Dissertations

Coastal community resilience requires connecting people with useful information that reflects their needs and interests and empowers them to make informed marine resource decisions. In this thesis, I explore how to effectively integrate disparate data from different disciplines and sources to make information more useful and usable at federal, state, tribal, and local levels in order to support more holistic and integrated management. To accomplish this, I draw on different types of knowledge and approaches, including Western science, local ecological knowledge, traditional ecological knowledge, and citizen science, to incorporate the social perspective and community values for holistic marine resource management. …

Social-Ecological Heterogeneity Shapes Resilience Of Small-Scale Fisheries: An Interdisciplinary Analysis Of The Mexican Chocolate Clam Fishery In Loreto, Mexico, Kara E. Pellowe

Electronic Theses and Dissertations

All benefits provided by natural systems are embedded within coupled social-ecological systems (SESs). Fisheries are clear examples of SESs: through fishing, humans affect ecosystem structure and functioning, and in turn, receive benefits, including sustenance, employment, and cultural value. Resilience, the ability to maintain structure and function in the face of change, is key to sustaining the social and ecological components of fisheries-related SESs and their interactions. Many factors contribute to resilience, including heterogeneity. By identifying heterogeneity in these complex systems, we are better able to understand the capacity of fishery-related SESs to adapt to change, and contribute to management that …

Mountain Livelihoods In A Time Of Change: A Case Study Of Upper Mustang In Nepal, Sandesh Shrestha

Electronic Theses and Dissertations

A case study was conducted in a remote Himalayan village—Yara—in the Upper Mustang region of Nepal. The goal of this study was to understand and assess the livelihood strategies of local people in the village. The study focused on understanding the socio-economic and environmental driving factors of livelihood vulnerability, prevalent livelihood activities, emergent livelihood strategies, and resulting livelihood outcomes in the village. We used multiple data generation methods, which included both qualitative social science and quantitative biophysical components. For the qualitative component, we utilized multiple data generation methods including key informant interviews, semi-structured household interviews, group discussions, and field observations. …

Battle Over Black Bears: Investigating Perceptions Of The Black Bear Hunting Referendums In Maine, Francesca A. Gundrum

Electronic Theses and Dissertations

Human dimensions of wildlife is an emerging discipline that seeks to understand the complex relationships between people, wildlife, and their conflicts and/or interactions (Decker, Riley, & Siemer, 2012). Human dimensions utilizes several tested theoretical frameworks to investigate these complexities, such as cognitive hierarchy theory and wildlife value orientations (WVOs). Both of these theoretical frameworks were examined in this study, which investigated the content of news media during controversial American black bear (Ursus americanus) hunting referenda in Maine, and key stakeholder perceptions of black bear management. Maine is the only state that allows hunters to take a black bear over bait, …

Climate Resilient Development And Discourse In The Peruvian Highlands, Jamie A. Haverkamp

Electronic Theses and Dissertations

This dissertation strives to rethink apolitical and ahistorical efforts for adapting to climate change in terms of a political struggle for survival in times of radical global environmental change. Drawing on ethnographic and participatory fieldwork with agro-pastoralists of the Peruvian Andes, government officials and international NGO actors, this dissertation follows emergent climate-resilient discourse of rapid glacier retreat as it travels from global origins and articulates with local culture and indigenous ecologies in the Cordillera Blanca. Through this research, I offer a critical interpretive analysis of modern, capitalist and rationalist ways of knowing and planning for climate change, finding that such …

Navigating Wilderness And Borderland: Environment And Culture In The Northeastern Americas During The American Revolution, Daniel S. Soucier

Electronic Theses and Dissertations

This dissertation examines the evolving interactions of nature and humans during the major military campaigns in the northern theatre of the American War for Independence (1775 – 1783) as local people, local environments, and military personnel from outside the region interacted with one another in complex ways. Examining the American Revolution at the convergence of environmental, military, and borderlands history, it elucidates the agency of nature and culture in shaping how three military campaigns in the “wilderness” unfolded. The invasion of Canada in 1775, the expedition from Quebec to Albany in 1777, and the invasion of Iroquoia in 1779 are …

Challenges To Economic Resiliency And Performance: Measuring The Regional Impacts Of Rurality And Space, Elena S. Smith

Electronic Theses and Dissertations

It is commonly observed that there are inequalities found in economic growth, development, and performance between different regions. Because of this, it is vital for regional planners to have knowledge to which economic problems are present (Armstrong and Taylor, 2000; Martin, 2005). With such knowledge, planners are able to tailor and implement regional policies in an informed manner that is better suited to address economic problems. Found in this work are two studies that contextualize separate economic problems which have been extensively discussed within regional sciences and rural studies.

The first study seeks to assess how a county’s degree of …

Envisioning Recovery: A Social-Ecological Systems Analysis Of Maine’S Co-Managed Sea Urchin Fishery, Kimberly L. Ovitz

Electronic Theses and Dissertations

Maine’s sea urchin resource has provided a critical source of income and cultural value to resource harvesters across the state, yet in the absence of adequate governance mechanisms, the urchin resource quickly succumbed to overharvest and persisting stock decline. Following collapse, the urchin fishery transitioned to an advisory co-management system characterized by increased collaboration between urchin harvesters and resource managers. As collaborative dialogue and decision-making continue, fishery participants are collectively envisioning a more sustainable future for this important natural resource.

This master’s thesis explores Maine’s urchin fishery as a complex and coupled social-ecological system (SES) and documents harvester and scientist …

Party Development And Political Conflict In Maine 1820-1860 From Statehood To The Civil War, Lee D. Webb

Electronic Theses and Dissertations

This dissertation is a history of politics in Maine during the state’s formative period, the years from statehood until 1860. The history focuses on party conflict and on the development of organized political parties, particularly the Democratic and Republican parties. It concentrates on the structures and processes that politicians built, including party newspapers, county conventions, state conventions, legislative caucuses, and ultimately state committees and the office of state committee chair – all to compete effectively for power. During this 40-year period, parties also develop powerful new messages, campaign strategies, and developed leaders with the skills to accomplish these tasks.

I …

Improving The Performance Of Ice Sheet Modeling Through Embedded Simulation, Christopher G. Dufour

Electronic Theses and Dissertations

Understanding the impact of global climate change is a critical concern for society at large. One important piece of the climate puzzle is how large-scale ice sheets, such as those covering Greenland and Antarctica, respond to a warming climate. Given such ice sheets are under constant change, developing models that can accurately capture their dynamics represents a significant challenge to researchers. The problem, however, is properly capturing the dynamics of an ice sheet model requires a high model resolution and simulating these models is intractable even for state-of-the-art supercomputers.

This thesis presents a revolutionary approach to accurately capture ice sheet …

Evaluation Of Multi-Level Cognitive Maps For Supporting Between-Floor Spatial Behavior In Complex Indoor Environments, Hengshan Li

Electronic Theses and Dissertations

People often become disoriented when navigating in complex, multi-level buildings. To efficiently find destinations located on different floors, navigators must refer to a globally coherent mental representation of the multi-level environment, which is termed a multi-level cognitive map. However, there is a surprising dearth of research into underlying theories of why integrating multi-level spatial knowledge into a multi-level cognitive map is so challenging and error-prone for humans. This overarching problem is the core motivation of this dissertation.

We address this vexing problem in a two-pronged approach combining study of both basic and applied research questions. Of theoretical interest, we investigate …

Role Of Dignity In Rural Natural Resource Governance, Tora Johnson

Electronic Theses and Dissertations

Dignity is “an internal state of peace that comes with the recognition and acceptance of the value and vulnerability of all living things” (Hicks, 2011, p. 1). Dignity is a crucial element in effective governance arrangements. This study applies dignity theory, and related theories of natural resource governance and environmental communication, to understand and overcome barriers to effective governance of common pool resources in rural communities. Chapter 1 reviews relevant literature on natural resource governance and develops a theoretical framework for dignity. Chapter 2 applies dignity theory to a contentious comprehensive planning process in a small Maine town in order …

Spatiotemporal Wireless Sensor Network Field Approximation With Multilayer Perceptron Artificial Neural Network Models, François Neville

Electronic Theses and Dissertations

As sensors become increasingly compact and dependable in natural environments, spatially-distributed heterogeneous sensor network systems steadily become more pervasive. However, any environmental monitoring system must account for potential data loss due to a variety of natural and technological causes. Modeling a natural spatial region can be problematic due to spatial nonstationarities in environmental variables, and as particular regions may be subject to specific influences at different spatial scales. Relationships between processes within these regions are often ephemeral, so models designed to represent them cannot remain static. Integrating temporal factors into this model engenders further complexity.

This dissertation evaluates the use …

Toward A Commons Of Geographic Data, Joseph J. Campbell

Electronic Theses and Dissertations

Making scientific data openly accessible and available for re-use is desirable to encourage validation of research results, and/or economic development. A significant body of spatially-referenced, locally-produced data produced by individual researchers, non-profit groups, private associations, small companies, universities, and non-governmental organizations across the United States is not online and therefore not generally available to professional scientists and to the general public. If there were an online environment, a "Commons of Geographic Data," where that data could be deposited or registered, and where users could access and re-use it, what infrastructure characteristics might potential contributors find desirable in order for them …

Enhanced Place Name Search Using Semantic Gazetteers, Nagalakshmy Vijayasankaran

Electronic Theses and Dissertations

With the increased availability of geospatial data and efficient geo-referencing services, people are now more likely to engage in geospatial searches for information on the Web. Searching by address is supported by geocoding which converts an address to a geographic coordinate. Addresses are one form of geospatial referencing that are relatively well understood and easy for people to use, but place names are generally the most intuitive natural language expressions that people use for locations. This thesis presents an approach, for enhancing place name searches with a geo-ontology and a semantically enabled gazetteer. This approach investigates the extension of general …

Making Graphical Information Accessible Without Vision Using Touch-Based Devices, Hari Prasath Palani

Electronic Theses and Dissertations

Accessing graphical material such as graphs, figures, maps, and images is a major challenge for blind and visually impaired people. The traditional approaches that have addressed this issue have been plagued with various shortcomings (such as use of unintuitive sensory translation rules, prohibitive costs and limited portability), all hindering progress in reaching the blind and visually-impaired users. This thesis addresses aspects of these shortcomings, by designing and experimentally evaluating an intuitive approach —called a vibro-audio interface— for non-visual access to graphical material. The approach is based on commercially available touch-based devices (such as smartphones and tablets) where hand and finger …

Qualitative Spatial Reasoning With Holed Regions, Maria Vasardani

Electronic Theses and Dissertations

The intricacies of real-world and constructed spatial entities call for versatile spatial data types to model complex spatial objects, often characterized by the presence of holes. To date, however, relations of simple, hole-free regions have been the prevailing approaches for spatial qualitative reasoning. Even though such relations may be applied to holed regions, they do not take into consideration the consequences of the existence of the holes, limiting the ability to query and compare more complex spatial configurations. To overcome such limitations, this thesis develops a formal framework for spatial reasoning with topological relations over two-dimensional holed regions, called the …

Support Vector Methods For Higher-Level Event Extraction In Point Data, Jon Devine

Electronic Theses and Dissertations

Phenomena occur both in space and time. Correspondingly, ability to model spatiotemporal behavior translates into ability to model phenomena as they occur in reality. Given the complexity inherent when integrating spatial and temporal dimensions, however, the establishment of computational methods for spatiotemporal analysis has proven relatively elusive. Nonetheless, one method, the spatiotemporal helix, has emerged from the field of video processing. Designed to efficiently summarize and query the deformation and movement of spatiotemporal events, the spatiotemporal helix has been demonstrated as capable of describing and differentiating the evolution of hurricanes from sequences of images. Being derived from image data, the …

Specifying And Detecting Topological Changes To An Areal Object, Jixiang Jiang

Electronic Theses and Dissertations

No abstract provided.

An Embedding Graph For 9-Intersection Topological Spatial Relations, Matthew P. Dube

Electronic Theses and Dissertations

In the practice of mapmaking, it is commonplace to represent many spatial phenomena as if they were in a different dimension than they truly are. In this context, it is extremely important to understand the total set of relationships available in a two-dimensional setting. Currently, there exist many sets of relations in two dimensions that have been modeled by the 9-intersection matrix. Many of these sets of relations have defined conceptual neighborhood graphs that show the inherent topological similarities between different types of configurations. Many of these sets of relations, however, do not have established conceptual neighborhood graphs. Furthermore, …

Towards Spatial Queries Over Phenomena In Sensor Networks, Guang Jin

Electronic Theses and Dissertations

Today, technology developments enable inexpensive production and deployment of tiny sensing and computing nodes. Networked through wireless radio, such senor nodes form a new platform, wireless sensor networks, which provide novel ability to monitor spatiotemporally continuous phenomena. By treating a wireless sensor network as a database system, users can pose SQL-based queries over phenomena without needing to program detailed sensor node operations. DBMS-internally, intelligent and energyefficient data collection and processing algorithms have to be implemented to support spatial query processing over sensor networks. This dissertation proposes spatial query support for two views of continuous phenomena: field-based and object-based. A field-based …

Generating Contour Maps For Dynamic Fields Monitored By Sensor Networks, Cheng Zhong

Electronic Theses and Dissertations

Wireless sensor networks provide a new tool that enables researchers and scientists to efficiently monitor dynamic fields. In order to extend the lifetime of the network, it is important for us to minimize network data transmission as much as possible. Previous work proposed many useful aggregation techniques to answer max, min and average questions, and some of them have been employed in real applications. But we cannot get spatial information from these aggregation techniques. This thesis presents an efficient aggregation technique for continuous generation of contour maps for a dynamic field monitored by a wireless sensor network. A contour map …

Provenance Tracking In A Commons Of Geographic Data, David B. Mccurry

Electronic Theses and Dissertations

Advancement in digital archiving technologies provides researchers with a multitude of methods for sharing their research and data digitally with others. However, when acquiring data from others directly or indirectly the law often imposes an assumption of copyright in the dataset acquired. This creates a difficult legal situation affecting future use and creation of derivative works from the data. A digital commons may be defined as a shared resource in which creators of contributed materials (data) grant a legal right for all others to use the material under the provisions of an open-access license. This thesis hypothesizes that an approach …