Digital Commons Network^™

Dryland Vegetation Mapping Using High Spatial-Temporal Resolution Satellite Imagery In New Mexico: A Comparison Of Phenological Time-Series Transformation Methods, Pratistha Sharma

Geography ETDs

New Mexico's drylands are undergoing notable vegetation changes due to rising aridity, higher temperatures, and shifts in precipitation with changing climate. Mapping drylands through remote sensing is challenging compared to mesic systems due to the irregular patterns of rainfall-driven phenology and weaker vegetation absorption signals. This study aims to enhance vegetation mapping in New Mexico, utilizing a high-resolution, frequently revisited PlanetScope dataset with multispectral capabilities, specifically chosen for its suitability for time-series analysis. The challenge with high spatial and temporal data lies in the overwhelming volume, leading to issues like the curse of dimensionality, overfitting, data redundancy, collinearity, and visualization …

The Impacts Of Transfer Learning For Ungulate Recognition At Sevilleta National Wildlife Refuge, Michael Gurule

Geography ETDs

As camera traps have grown in popularity, their utilization has expanded to numerous fields, including wildlife research, conservation, and ecological studies. The information gathered using this equipment gives researchers a precise and comprehensive understanding about the activities of animals in their natural environments. For this type of data to be useful, camera trap images must be labeled so that the species in the images can be classified and counted. This has typically been done by teams of researchers and volunteers, and it can be said that the process is at best time-consuming. With recent developments in deep learning, the process …

Projecting Vegetation Condition And Fire Risk In Southern California, Westin K. Guthrie

Geography ETDs

In the western US, relationships between fire, vegetation, climate, and urban areas are dynamic and evolving. This work used a forest landscape model, LANDIS-II, informed by future climate scenarios and projections of urban expansion to understand wildfire interactions within projected Wildland Urban Interface (WUI) areas. This simulation showed that in both 2050 and 2100 +93% of the WUI in southern California experienced fire. Future work needs to be done in parametrizing forest biomass to ensure the validity of projections. Additionally, increasing each climate scenario model's replicates will create more accurate projections.

The Affective Landscapes Of Herbalism In New Mexico, Samantha Angelou Stroud

Geography ETDs

Herbalism, or practices which use plants for medicinal purposes, is tied to traditions in several cultures of the American Southwest, including Indigenous herbal medicine, Mexican-American curanderismo, and Western herbal traditions. Herbalism has been steadily gaining mainstream popularity since the late 1960s, alongside counterculture, holistic health, and back-to-nature movements, introducing many newcomers to the practice. This study asks: How does herbalism create and attach meaning to plants, cultures, and place in New Mexico? What are the affective landscapes produced by herbalism in New Mexico? And, to what extent do meaningful attachments manifest in ethics and actions of care? I argue that …

Impacts Of Urban Renewal On Community Identity And Sense Of Place In Las Cruces, New Mexico, Savannah Lorraine Quintana-Eddins

Geography ETDs

Las Cruces is the second largest city in New Mexico which has experienced exponential growth in the last three decades. The city has been cultivated by a rich history of Native populations, Spanish colonialism, and American democratic government. The culmination of these influences on Las Cruces had much influence on the Mesquite Historic District, the original townsite of Las Cruces. This area is home to many generational families and is adjacent to the downtown Main Street corridor. Downtown was built from the destruction of the Mesquite Historic District caused by waves of urban renewal projects. Through organizing, legislative action and …

Estimating Potential Exposure From Abandoned Uranium Mine Sites Through Machine Learning Classification Of Animal Behavior: A Case Study In The Navajo Nation, Christopher Girlamo

Geography ETDs

Waste from Abandoned Uranium Mines (AUMs) has negatively impacted Indigenous communities for generations. To answer these concerns, this research collaborated with Navajo Nation community members in Cove, AZ and Red Valley, AZ in order to better predict the potential AUM waste exposure their flocks face. A GIS-Multi-Criteria Decision Analysis (GIS-MCDA) model quantified potential exposure to AUM waste. Animal behavior was classified based on GPS and accelerometer data utilizing a Hidden Markov Model (HMM). The results of both the GIS-MCDA and animal behavior classification modeling was combined into a cumulative exposure potential value for each animal. This study found that livestock …

Rock Climbing And Conservation In Land Management: Can They Coexist?, Marissa Heller

Geography ETDs

As participation in outdoor recreation is growing in the U.S., a dilemma is presented for conservation planners and land area managers who must manage the increasing demand for recreation while simultaneously working to protect species. Rock climbers and other outdoor recreationalists have asserted that a relationship exists between recreation and the conservation of public lands. However, mounting evidence suggests that rock climbing continues to cause a multitude of negative impacts to ecosystems. Here, I investigate the extent to which land management practices allow for rock climbing and conservation to coexist, and how it is that well developed plans protect ecologically …

The Changing Urban Forest In Gallup, New Mexico: Contextualizing Urban Tree Programs And Planning Processes, Joseph A. Scala

Geography ETDs

Tree plantings are often proposed as a solution to a variety of urban problems. The purpose of this project is to investigate the historical formation of urban tree cover in Gallup, New Mexico, and the extent to which urban tree plantings can benefit areas with inequitable urban tree distribution. To do this, I employ a mixed methods approach that includes correlation analysis, historical analysis, and analysis of urban tree canopy change from 1972-2005. The findings from this study indicate that Gallup’s history of tree plantings is heavily influenced by its history of economic development. Additionally, the findings demonstrate that if …

Human-Centered Avalanche Susceptibility Mapping, Lindsey L. Rotche

Geography ETDs

With backcountry winter travel increasing in popularity, the importance of accessible avalanche safety information is crucial. Widely accessible avalanche backcountry maps use slope shading to show where avalanches are likely to start. Instead of focusing on the hazard of an avalanche starting in a specific location, this project shifted the cartographic emphasis of avalanche susceptibility maps to show risk to a human traveling in the terrain. I developed a methodology to incorporate possible avalanche runouts, terrain traps, and connected slopes while reducing false certainty of the visualization. To provide a more comprehensive representation of susceptible terrain, I integrated aspect, distance …

The Nature Of Environmental Planning In The Carnué Land Grant, Desiree Loggins

Geography ETDs

In 1819, the Spanish Crown established Cañón de Carnué land grant as a buffer between the colonial settlement of Albuquerque and raids from Plains Apache and other nomadic tribal nations. Upon entering the U.S. period of Manifest Destiny, Carnué land grant heirs lost much of the land they stewarded as a collective to the Cibola National Forest. While the state generates laws and policies that complicate the prioritization of subsistence land uses by land grant communities, Carnué’s presence is felt as grantees reform relationships to their environment and assert their personal stake in stewardship and care. I argue that Carnué’s …

Examining Psilocybin And Lsd Consumption Through A Geographical Lens, Nicole Sarah Caruana

Geography ETDs

n recent years, the study of psychedelic science has reemerged across a variety of fields. Psilocybin and LSD (Lysergic Acid Diethylamide) are two psychedelic substances receiving an influx of attention for their success treating issues such as depression, post-traumatic stress, and addiction. Psilocybin and LSD are still widely used despite their classification as illegal Schedule I substance. This study aims to learn more about current users with the following questions guiding this research: What are barriers limiting psilocybin and LSD consumption? What are the motivations behind use? What impacts are psilocybin and LSD having on users lives? I used Qualitative …

Nuanced Networks: How Social Relationships And Power Influence Participation In Private Lands Conservation Programs, Ellen Loechner

Geography ETDs

Because the majority of land in the Midwestern United States is privately owned, the responsibility for creating and maintaining space for wildlife conservation falls upon private landowners. Numerous state and federal agencies and non-governmental organizations (NGOs) host private lands conservation programs that offer landowners financial and technical support to complete conservation projects on their property (Echols, Front, and Cummins 2019). While the individual motivations and priorities of a landowner may inform how they use and manage their property, a landowner’s ability to connect with the agricultural and conservation communities may determine if they have the opportunity to participate in these …

Weedy Relations: Narratives Of Invasion And Intimacy With Tamarisk In The Chihuahuan Desert, Shannon S. Pepper

Geography ETDs

Tamarix spp., also known as salt cedar or tamarisk, is a shrub that has garnered a notorious reputation in North America as an invasive plant, with widespread policy and research advocating for its eradication in the Southwest U.S. and Northern Mexico. This study examines both governmental conservation documents and news articles to investigate narrative trends on tamarisk in the Southwestern U.S. and Northern Mexico as a contiguous region (the Chihuahuan Desert), expanding on current research to include transborder effects on the perception and management of introduced species. This paper asks: In the last 25 years, how has the movement, …

In Pursuit Of Comparability: Evaluating Influence And Interaction Among Components Of The Home Range Estimation Process In Chimpanzee Datasets, Jillian J. Rutherford

Geography ETDs

The home range (HR) is a fundamental manifestation of an animal’s spatial behavior, but its study has been limited by unclear, unreliable, and unstandardized methodological approaches for measurement. The lack of a comprehensive evaluation of the influence of components of the HR estimation process has hampered consensus over best practices for collecting and analysing movement data. This leads to wide variation in practice, thwarting direct comparability between HR estimates and curtailing the cohesive power of cross-study findings necessary for testing hypotheses and developing appropriate conservation and management strategies. In this thesis I explore the influence of and interaction between common …

Individual Exposure Potential Assessment For Livestock Based On Spatial-Temporal Analysis Of Gps Data And Behavior Patterns Classification In Cove Wash Watershed, Arizona, Zhuoming Liu

Geography ETDs

This thesis examined the geospatial and temporal grazing patterns of domesticated livestock to model individual-level exposure potential to abandoned uranium mine (AUM) waste in a tribal community in the Southwest United States. Lotek Litetrack Global Positioning System (GPS) collars collected data at 20-minute-intervals for 2 flocks of sheep and goats during the Spring and Summer of 2019. Depending on the flock and individual animals, tracking time ranges from 10 days to four months. This research developed a GIS-based exposure potential framework that built on existing methodologies in time geography, GIS, and exposure mapping. This thesis aims to: 1) classify GPS …

Assessing Drought Vegetation Dynamics At The Landscape Scale In Semiarid Grass- And Shrubland Using Mesma, Rowan Converse

Geography ETDs

New Mexico experienced substantial impacts of regional-scale drought from 2011-2014. Global climate change may make such events a new normal for the southwest: drought events are expected to increase in both frequency and severity over the coming century. While semiarid grasslands recover quickly from short-term drought, the cumulative impacts of climate change may reduce the resiliency of these systems over time. Remote sensing methods can allow efficient and cost-effective comparison of ecosystem recovery from drought events over time using long-running imaging systems like Landsat. We investigate the efficacy of using multi-endmember spectral mixture analysis (MESMA) to quantify the impacts of …

Drinking Water Governance For Whom? An Institutional Analysis Of Rural Drinking Water Systems In New Mexico, Tucker Colvin

Geography ETDs

Rural community drinking water systems in New Mexico are facing many challenges, including a lack of personnel, deteriorating infrastructure, lack of funds, overly burdensome and confusing regulation, environmental concerns, and concerns over water rights. Governing agencies are creating vulnerability by making managers prioritize some issues and neglect others. Water systems designated a Mutual Domestic Water Consumers Associations are especially problematic because they are small and managed by volunteers but have as much regulatory burden as larger municipalities. I use the theory of institutional work to explain how an institution that was originally designed to help low-income and rural communities is …

Backyard Wildlife Refuges In Albuquerque, Nm: An Urban Land Ethic In Practice, Laurel E. Ladwig

Geography ETDs

In the urban setting, biodiversity conservation requires intentionally creating spaces humans and wildlife can share. An urban land ethic can guide this process. Developing and practicing this ethic requires asking questions that consider approaches from multiple disciplines and avoid anthropocentric framing. Both More-Than-Human and Critical Physical Geography bring multiple knowledges into conversation to make complex realities visible. This project explores these fields of scholarship as guides for reconciling the needs of the land community.

Sharing familiar spaces creates opportunities for developing ethical relationships between humans, non-humans, and natural systems. Wildlife gardening creates habitat in our residential and community areas, providing …

A Hybrid Gis/In Situ Analysis Of Aed Coverage On The Unm Central Campus, Ian T. Hill

Geography ETDs

Automated External Defibrillators (AED’s) are lifesaving devices that can greatly improve the survival rates of cardiac arrest when used quickly. There are publicly accessible AED’s on the UNM campus, and each device has an effective range based on how quickly a responder can retrieve the AED and return it to the site of the cardiac emergency. The ranges of the AED’s on UNM central campus are analyzed using GIS, interior building measurements, and various retrieval speeds. This helps evaluate the current placement of AED’s on campus and helps reveal where future coverage is needed. This focus on the combined navigation …

Assessing How Terrain Representations And Scale Affect The Accuracy Of Distance Estimates, Kristian Mueller

Geography ETDs

Terrain is often displayed on maps either as background or foreground. Although terrain representations are ubiquitous, there is not a thorough understanding of map-readers’ cognition of geographic surfaces from various terrain representations. The research described in this thesis empirically assessed map users’ abilities at estimating straight-line distance using maps with two different types of terrain representations and at three different scales. The objective of this research was to assess how accurately map users estimate distance on the ground taking into account variations in elevation. Participant data in the form of demographics and distance estimates were statistically analyzed to determine if …

La Gota Que Colma La Caguama: Cummulative Tensions Transformed Into The Defense Of Water, Anthony J. Meluso

Geography ETDs

Making water management decisions is often where dreams and visions about potential futures are constructed and contested (Swengedouw 2015). However, in a globalized world, it is not well understood how people can challenge dominant paradigms to shape desirable futures when they are also complicit in, and dependent on existing structures (Arts & Buizer 2009; Emery, Perks, & Bracken 2013: Kleinschmit, Böcher, & Giessen 2009). This project examines a brewery conflict in the Mexicali Valley that provides an example of how protesters were able to challenge dominant assumptions about water management in a complex, globalized environment. I draw on Laclau’s (2005) …

Engaging Sacred Space And Experiencing God In The Mountains: A Study Of The Non-Traditional Worship Environment Of Mountain Cathedrals, An Ecumenical Meetup Group Based In Albuquerque, New Mexico, Brendan Isaiah Nixon

Geography ETDs

This paper focuses on the non-traditional Christian worship site of Mountain Cathedrals in Albuquerque, New Mexico. I argue that affectual and emotional responses are elicited from the congregants of Mountain Cathedrals through the process of sacralization. It is shown that Christian worship in a non-traditional outdoor setting affects the ways in which the congregants engage with, participate in, and create sacred space. I survey current literatures of sacred space, the contemporary Christian church, and non-traditional worships spaces. Using the literature as a backdrop, I utilize Mountain Cathedrals as a case study for understanding the ways in which sacred space is …

Adjudication And The Adaptive Capacity Of Pecan Farmers In The Lower Rio Grande, Daniel R. Beene

Geography ETDs

Despite growing uncertainty of water availability in the future and popular understandings of water conservation in agriculture, a growing number of farmers in the Lower Rio Grande Basin are rapidly transitioning to pecan orchards, a long-term and highly water-dependent crop. Drivers of landscape change can be environmental, historic, socioeconomic, or institutional. Adaptation to change is understood as responses to external stimuli and is limited to a threshold by which an actor can meet their goals. Much of the current scholarship focuses on a given population’s adaptive capacity toward global climate change, however, most water policy in the western United States …

Evaluating The Utility Of Object-Based Image Analysis For Ecological Monitoring Of Pinon-Juniper Mortality, Zachary C. Taraschi

Geography ETDs

Forested ecosystems in the American Southwest are experiencing change at an unprecedented rate, largely due to mortality events triggered by increased temperatures, drought, and insect infestations. Large-scale changes in the distributions of these ecosystems can potentially alter regional-scale carbon, water and energy dynamics. One biome in particular that has experienced increased mortality and altered forest composition over the past 30 years are Piñon-Juniper woodlands (Pinus edulis, Juniperus spp.) in the American Southwest. New fields of study, in particular, Remote Sensing, are applying and adapting traditional methods for ecological monitoring of these woodlands. Remote sensing offers the potential to synoptically …

Urban Animals: Gis Analysis Of Stray Canines And Felines In Albuquerque, New Mexico, Courtney Brock

Geography ETDs

While human influence and progress has shaped the cityscape of Albuquerque, New Mexico, many stray animals also consider this city to be their home. Albuquerque’s Animal Welfare Department holds a human responsibility over these urban animals and their habitat displacement, requiring them to either be registered and owned or euthanized. Although animal rights are a topic continually in debate, the habitat choices made by stray animals are rarely questioned, due to anthropocentrism in the city’s structure and laws.

Through observational field research with Albuquerque’s Animal Welfare Officers, stray animal locations were collected throughout the city for one week in July …

How The Proximity Of Crime Impacts Housing Prices: A Hedonic Pricing Study Of Inner-Loop Houston, Tx., Samuel D. Thompson

Geography ETDs

This research used data on over 2200 house sales in inner-city Houston, TX to estimate the impact of crime on house prices. A GIS was used to tabulate home sale data from the MLS, neighborhood characteristics and crime data published by the Houston Police Department. Hedonic Pricing Models were built to assess how crime effects housing price and if proximity to the criminal event matters. Results show that crime does have a measurable impact on home sale price and that proximity of crime is important. An increase in number of violent criminal events leads to a discount in home price. …

Virtuous Discourse In The Specialty Coffee Sector: How Social Responsibility Practices Fragment Pursuits For A Supply Chain, Jane H. Motsinger

Geography ETDs

A diversity of public and private initiatives strive to address the human-environment challenges confronting the global coffee industry, including certifications like Fairtrade, direct trade sourcing models, and efforts led by NGOs. Research examines the outcomes of major certification programs and the private initiatives of corporations like Starbucks. Much less is known about the business practices of the small specialty coffee businesses that increasingly advertise sustainable business practices. Yet, their collective business practices likely influence the industry-wide efforts to achieve a sustainable supply chain. This research examines how small specialty coffee roasting and importing companies represent their socially responsible business practices …

Water Quality Assessment In The Santa Fe River: Tracking Pollution Sources Via Quantitative Polymerase Chain Reaction Analysis, Hayley Aurora Hajic

Geography ETDs

Microbial contamination affects many water bodies in the United States and pathogens associated with contamination pose a threat to human health. While the nation’s lakes, streams and rivers have been monitored for decades, many still do not meet the requirements of the 1972 Clean Water Act. Due to the number of pathogens that occur in water bodies, it is not feasible to directly monitor all of them. Instead of testing for a plethora of pathogens, it is standard practice for water divisions to monitor fecal indicator bacteria (FIB) as a proxy to determine water quality. There are significant flaws, however, …

Impact Of Drought On Land Cover Changes In Diné Bikéyah – A Study Through Remote Sensing, Anjanette A.J. Hawk

Geography ETDs

This study identifies land cover changes associated with a ten-year drought period and discusses the importance of vegetation change in Diné Bikéyah, a semi-arid land located in a remote part of the southwestern United States (US). This study concludes that drought produced slight changes in vegetation within a 540 km² study area in the Tselani-Cottonwood Chapter (TCC) in Diné Bikéyah. The data for this study consist of three Landsat images for the years 1998, 2002, and 2009. The methods used to analyze these Landsat images included image pre-processing, calculation of normalized difference vegetation index (NDVI) images, and supervised (maximum …

Assessment Of Vegetation Response To Wildfire At Bandelier National Monument, New Mexico: Case Study Of The Las Conchas Fire, Gladys Valentin-Gonzalez

Geography ETDs

In the past couple of decades, there has been an increase in the occurrence of wildfire events in the United States. The U.S. Forest Service estimates that over 73,000 wildfires on average occur annually in the U.S., burning about 7.3 million acres of land. Bandelier National Monument, in northern New Mexico, has been affected by several wildfires in the past 40 years, one of the most recent being the Las Conchas Fire in 2011, which burned over 60,700 hectaresin Bandelier National Monument and Valles Caldera National Preserve. This research explores a remote-sensing based assessment of vegetation response to and recovery …