Digital Commons Network^™

The Relationship Between Climate Distress And Climate Education Among College Students, Sylvie T. Heriza

Undergraduate Theses, Professional Papers, and Capstone Artifacts

This study examines the relationship between climate change education and climate distress among college students at the University of Montana. Utilizing a correlational design, forty-seven participants completed a survey assessing their concern with climate change and experience learning about climate change in university classes. Findings underscore the importance of addressing climate-related distress within higher education contexts and highlight avenues for improving university support systems. The study contributes to understanding the intersection of climate change awareness and mental health concerns among college students.

Interannual Growth-Climate Relationships Of Western Larch After Wildfire In The Northwest, Junior Burks

Undergraduate Theses, Professional Papers, and Capstone Artifacts

Montane and mixed-conifer forests in the northwestern United States are burning at rates greater than any time in recent decades, due to the combined impacts of global warming and historical and contemporary land use and land management. Western larch (Larix occidentalis) is a tree of high regional significance, exhibiting a variety of traits that make it resistant and resilient to fire. Because seedlings are more sensitive to environmental stressors than adults, the impacts of climate change are expected to be detectable first in juvenile trees. Recent research shows that the natural regeneration of western larch after wildfires has …

Navigating Extreme Climate Events: Uncovering The Challenges Of Social-Ecological System Governance In The Anthropocene, Amber Waialea Datta

Graduate Student Theses, Dissertations, & Professional Papers

A warming climate brings fundamental transitions to social-ecological systems (SES), threatening to degrade already strained relationships between people and nature. Extreme climate events can create crises that provide an opportunity for examining how resource managers, scientists, policy-makers, and others who make or influence decisions about SES (i.e. “governance actors”) understand and respond to climate change. Previous research indicates that extreme climate events may present opportunities for governance actors to evolve new priorities and approaches that improve governing SES as climate change bears down. However, there has been little empirical research to understand how governance actors respond to extreme climate events …

A Biophysical Approach To Modeling Elevational Range Shifts In Colorado Mammal Communities, Ryan T. Mahar

Graduate Student Theses, Dissertations, & Professional Papers

Species geographic ranges are shifting in the face of contemporary climate warming, and documenting range shifts is crucial to our understanding of the underlying drivers mediating movement in geographic range limits. Studies on elevational range shifts with climate change are beginning to accrue within the literature, though observed shifts are idiosyncratic and difficult to predict. Some species may respond to warming temperatures by shifting their range limits upslope, where temperatures are cooler owing to the adiabatic lapse rate. However, species may also respond to warming temperatures in an elevation-dependent manner: if changes in snow depth expose overwintering organisms to colder …

Welcome To The Farm, Elani Ben-Gabriel Borhegyi

Undergraduate Theses, Professional Papers, and Capstone Artifacts

The purpose of this creative scholarship is to examine human relationships to Earth and the implications for a thriving future. This thesis studies the current environmental state of our planet, then looks at sustainability as a model for improving human and planetary health, and ends by visualizing a thriving future beyond sustainability in which we adopt a “caretaker” culture. The key to this trajectory is to untangle and dismantle colonial relationships with the planet and replace them with “caretaker” relationships - relationships rooted in love, honor, and reciprocity with environmental connection, while taking into account past, present, and future generations …

Interactions Among Climate, Fire, And Ecosystem Processes Across Multiple Spatial And Temporal Scales In Rocky Mountain Forests, Kyra Diane Clark-Wolf

Graduate Student Theses, Dissertations, & Professional Papers

Warmer and drier climate conditions over recent decades are contributing to widespread increases in fire activity across western North America. The combined impacts of changing climate and fire activity threaten to undermine the longstanding resilience of forest ecosystems to wildfires, potentially leading to ecological transformations. This context creates a pressing need to understand the direct effects of climate and wildfire on ecosystem processes, and how longer-term changes in climate, fire activity, and ecosystem processes interact to determine ecological trajectories.

This dissertation advances our understanding of the causes and ecosystem consequences of wildfire and changing fire regimes in northern Rocky Mountain …

Individual And Population Responses To Hydrologic Variability In A Headwater Stream Salamander, Madaline Cochrane

Graduate Student Theses, Dissertations, & Professional Papers

Understanding how organisms respond to environmental variability is a central goal in ecology – a goal made even more pressing by the herculean challenge global climate change presents to all organisms. Climate change is increasing the frequency and intensity of floods and droughts, which will likely have disproportionate effects on freshwater organisms. Many stream-associated species have multi-stage life histories. However, we lack an empirical understanding of life history and movement responses of these organisms to hydrologic disturbances, and how these responses may influence demographic rates. In my dissertation, I used a combination of growth, developmental, movement, and demographic data to …

Facing The Climate Crisis: The Plaintiffs Of Held V. Montana Find Agency And Voice, Richard H. Forbes

Graduate Student Theses, Dissertations, & Professional Papers

16 young people, in a lawsuit titled Held v. Montana, are suing the state of Montana on the grounds that its state energy policy contributes to climate change, harming them physically and psychologically and violating their constitutional rights to a clean and healthful environment. This project explores the plaintiffs’ perspectives on the lawsuit, describes how their involvement is changing their relationships to their own climate-related mental health and explains how their psychological concerns reflect larger societal issues related to climate change.

Climatological, Hydrological, And Economic Analysis Of Agriculture In Montana And The Western U.S.A., Zachary H. Lauffenburger

Graduate Student Theses, Dissertations, & Professional Papers

Many studies have addressed the impact of climate on agriculture; however, fewer studies addressed how farmers adapt to climate change, to what extent implementation of adaptation strategies mitigates economic losses or alters the hydrologic system. Analyses of how historical climate affected not only farmer decision making, but also the economic and hydrological consequences of farmers’ adaptations to climate variations, and projections of the spatiotemporal climatic regimes at finer regional scales are critical for aiding in actionable climate change adaptations. This dissertation helps fill knowledge gaps on the impacts of climate change in rural regions of the agricultural western U.S.A. and …

We Are Larger Than Ourselves, Mark Spero

Graduate Student Theses, Dissertations, & Professional Papers

No abstract provided.

How Aquatic Insects Mitigate Temperature-Oxygen Challenges Via Behavioral, Morphological, And Physiological Plasticity, Jackson H. Birrell

Graduate Student Theses, Dissertations, & Professional Papers

How do organisms respond to environmental challenges and to environmental change? These questions occupy a central place in ecology and answering them will help us to understand why species live where they do, how organisms are affected by human activities, and, ultimately, how to choose among alternative conservation strategies. These questions are difficult, however, for two reasons. First, environmental challenges often involve multiple, interacting stressors. Second, individual responses can be modified by behavioral, morphological, and physiological plasticity. My dissertation investigates how interactions between temperature and oxygen influence the performance and survival of aquatic insects and how plasticity allows individuals to …

Impacts Of Climate And Wildfire On Western Larch Regeneration, Spencer T. Vieira

Graduate Student Theses, Dissertations, & Professional Papers

Fire plays a critical role in forests of the western United States (US), but as wildfire and climate deviate from historical patterns, increasing fire activity may significantly alter forest ecosystems. To understand the impacts of changing climate and wildfire activity on conifer forests, we studied the impact of wildfire and annual post-fire climate on western larch (Larix occidentalis) regeneration. We destructively sampled 1651 seedlings from 57 sites within 32 fires that burned at moderate or high severity from 2000-2015 in the northwestern US. Using dendrochronological methods, we estimated germination years of seedlings to calculate annual recruitment rates. We …

Genetic Rescue Of Isolated Cutthroat Trout, Donovan Alexander Bell

Graduate Student Theses, Dissertations, & Professional Papers

Anthropogenic habitat destruction has isolated innumerable populations that now face increased extinction risk due to demographic and genetic factors. Although often the best strategy, restoring connectivity can be challenging or even harmful. Such is the case for westslope cutthroat trout (Oncorhynchus clarkii lewisi; WCT) in the Missouri River basin, which are limited to completely isolated populations. Nonnative species threaten WCT in connected watersheds and barrier removal could be detrimental. My dissertation examines trade-offs and strategies for the management of isolated WCT. I first examined how nonnative trout species and climate change influence the distribution of WCT using a multispecies, dynamic …

Combined Effects Of Temperature And Heavy Metals On The Performance Of The Giant Salmonfly., James Frakes, Amanda Andreas, Benjamin P. Colman, Aurthur Woods

Graduate Student Theses, Dissertations, & Professional Papers

In many freshwater ecosystems, communities of aquatic insects are facing the combined stresses of warmer waters due to climate change and increased exposure to heavy metal toxicants. Although each stressor may threaten aquatic insects independently, they also likely interact in important ways to affect insect physiology and performance. Here we investigate this potential interaction using two populations of aquatic nymphs of the giant salmonfly, Pteronarcys californica, collected from adjacent rivers in Montana: naïve individuals from Rock Creek, a relatively pristine stream, and individuals from the Upper Clark Fork River, which has a history of heavy metal pollution and higher …

Growing Tiny Plants In Common Environments: Assessing Patterns And Mechanisms Of Drought Response Within Species, Mariah Kathryn Mcintosh

Graduate Student Theses, Dissertations, & Professional Papers

As climate changes and drought frequency and intensity increases, understanding how plants respond will be critical both for predicting potential for adaptation to future climate and for implementing effective ecosystem conservation and management at a time of rapid change. However, gaps in knowledge about the extent to which species vary in key traits across their ranges and the evolutionary and physiological mechanisms which underlie this variation limits both theoretical understanding and effective management. The broad theme of this dissertation is to address within-species variation both to improve understanding of adaptation to future climate and inform ecosystem conservation and management. The …

In The Shadow Of The Megadrought: Opportunities And Challenges For Addressing Loss And Damage From Climate Change In Chile And Eastern Montana, Usa, Elizabeth Grace Tobey

Graduate Student Theses, Dissertations, & Professional Papers

As the impacts of anthropogenic climate change mount, climate- related harms, both economic and non-economic, occur across every inhabited continent and disproportionately affect the world’s most vulnerable people. In response, the Loss and Damage agenda of the United Nations Framework Convention on Climate Change has emerged to address those climate-related harms that exceed human capacities for mitigation and adaptation. Significant questions remain regarding how losses and damages emerge across the globe and how Loss and Damage policy will be implemented to address those impacts. This thesis explores two specific questions: (1) national-level Loss and Damage policy mechanisms; and (2) perceptions …

Call Your Elected Officials: Identifying Predictors And Audiences For Collective Climate Action, Nathan Scott Bender

Graduate Student Theses, Dissertations, & Professional Papers

Influential climate action in the United States is beyond the scope of individual actions, and instead requires collective action. This challenges governmental agencies and NGOs to promote enough collective action to inspire systemic change. Though decades of social research have identified broad trends in the drivers of this collective climate action, predictors of specific actions vary across individuals and contexts, and existing theory does not fully account for these shifting relative contributions. Additionally, the scale and urgency at which we must address climate change requires understanding and motivating climate action at all scales, from broad trends to predictors of specific …

Held V. State, Alec D. Skuntz

Public Land & Resources Law Review

On March 13, 2020, a group of 16 Montana children and teenagers filed a complaint in the First Judicial District, Lewis and Clark County against the State of Montana and several state agencies. These young Plaintiffs sought injunctive and declaratory relief against Defendants for their complicity in continuing to extract and release harmful amounts of greenhouse gases which contribute to climate change. Plaintiffs premised their argument on the Montana Constitution’s robust environmental rights and protections. The Defendants filed a motion to dismiss which the District Court granted in-part and denied in-part. Held provides a roadmap for future litigation by elucidating …

Vecinos Para El Bienestar De La Comunidad Costera V. Ferc, Malcolm M. Gilbert

Public Land & Resources Law Review

The D.C. Circuit Court remanded three Brownsville, TX LNG approval orders to FERC for failing to adequately explain conclusions around environmental justice and climate concerns. The Court ordered FERC to reevaluate whether the projects are in the public interest. The LNG terminals and pipeline will disproportionately impact low-income, minority communities, and substantial greenhouse gas emissions from production and export will contribute to anthropogenic climate change. This case note explores the role that environmental justice and climate change play in federal agency decision-making processes, analyzes the legal framework for the Court's decision, and discusses how the outcome of this litigation could …

Adapting Sustenance: Indigenous People Preserve Traditional Food Sources, Mary Katherine Auld

Graduate Student Portfolios, Professional Papers, and Capstone Projects

Traditional foodways of Indigenous people around the world are being changed by human-caused climate change, environmental policy, and land management. For Indigenous people in interior Alaska and Montana, culture and survival are tied tightly to hunted and gathered food. The average American gets their food from a grocery store and thus is somewhat insulated from the impact of climate change on their diet. But climate change has its hand directly in the pantries, dinner plates, and seasonal practices of Indigenous people. I believe food is a central way people are tied to the earth, and thus creating narratives about impacts …

Modal Understanding Of Robustness Analysis, Grayson O'Reilly

Graduate Student Theses, Dissertations, & Professional Papers

No abstract provided.

Mountains To The Sea: How Climate Change Influences People, Cultures And Communities, Stephanie L. Maltarich

Graduate Student Portfolios, Professional Papers, and Capstone Projects

No abstract provided.

Climate Change Induced Migration, Solutions & Implications, Jack M. Rinck

Undergraduate Theses, Professional Papers, and Capstone Artifacts

The issue of migration is already a contentious issue in today’s political environment. Moving into the future, displacements of large numbers of people will continue to increase in both frequency and magnitude. One of the largest driving factors of future migrations will be anthropogenic climate change. This paper mainly focuses on sea level rise and the potential impacts changing oceans will inflict on coastal communities. Given projections of sea level rise and current coastal populations the potential for unprecedented levels of displacement is enormous. As such, there is a need for creative solutions that will aid in preventing, mitigating, and …

Complicity And Climate Change, Shalomita Kristanugraha

Graduate Student Theses, Dissertations, & Professional Papers

As individuals, how should we understand our personal complicity in climate change related harms? In this thesis, I argue that the predominant way we think of complicity within the Western moral paradigm—that is, as a distribution problem—is inadequate in helping us understand the nature of our complicity in climate change related harms. This inadequacy, in turn, psychologically hampers individual citizens residing in high-emitting nations of the Global North from effective and sustainable social and political engagement with climate change. To address the inadequacy and obstructions that result from it, I follow the discussion between Christopher Kutz and Iris Marion Young …

Heat For The Masses: Thermal Ecology Of The Western Tent Caterpillar, Victoria Dahlhoff

Graduate Student Theses, Dissertations, & Professional Papers

A unique feature of some gregarious, colonial insects is their ability to create external structures that alter environmental conditions for the entire (often family) group. A combination of physical alteration of local microhabitats and behavioral thermoregulation allows many of these animals to actively control their body temperatures, which allows them to regulate energy use and metabolism in variable thermal environments. Here I describe mechanisms of microhabitat modification and thermal regulation in the western tent caterpillar, Malacosoma californicum pluviale. Tent caterpillars build communal silk tents, whose temperatures can rise substantially above ambient air temperature. I experimentally manipulated colony sizes and examined …

Rock Glaciers Of The Beartooth And Northern Absaroka Ranges, Montana, Usa, Zachary M. Seligman, Anna E. Klene, Frederick E. Nelson

Geography Faculty Publications

Six hundred sixty‐one rock glaciers in the northern Absaroka and Beartooth Ranges of south‐central Montana were digitized and evaluated using geographic information systems technology and an array of topographic and environmental parameters. Beartooth rock glaciers are larger, occur at higher elevations, receive more precipitation, and are subject to lower temperatures than northern Absaroka rock glaciers. Elevation is strongly correlated with rock glacier activity. Comparative analysis of these adjacent mountain ranges indicates that Beartooth geomorphic landscapes are shifting from predominantly glacial to periglacial regimes, and that the northern Absarokas have largely completed this transition. Because glaciers are declining in response to …

Juliana V. United States, Daniel Brister

Public Land & Resources Law Review

In 2015, a group of adolescents between the ages of eight and nineteen filed a lawsuit against the federal government for infringing upon their civil rights to a healthy, habitable future living environment. Those Plaintiffs in Juliana v. United States alleged that the industrial-scale burning of fossil fuels was causing catastrophic and destabilizing impacts to the global climate, threatening the survival and welfare of present and future generations. Seeking to reduce the United States’ contributions to atmospheric carbon dioxide, Plaintiffs demanded injunctive and declaratory relief to halt the federal government’s policies of promoting and subsidizing fossil fuels, due to the …

An Estimated Contribution Of Glacier Runoff To Mongolia’S Upper Khovd River Basin In The Altai Mountains, Caleb Gikai Pan, Ulrich Kamp, Munkhdavaa Munkhjargal, Sarah Halvorson, Avirmed Dashtseren, Michael Walther

Numerical Terradynamic Simulation Group Publications

In the semiarid climate of northwestern Mongolia, glaciers are critical contributors to water resources, particularly during the dry summer months. Nevertheless, our knowledge of the contribution of glacier runoff in the Upper Khovd River Basin (UKRB) is limited. This study investigates the impact of glacier recession on the UKRB's hydrology in western Mongolia's Altai Mountains. The analysis included glaciological method measurements, satellite-derived glacier extent records, and a simple ice ablation model. Our modeling used a mass balance gradient of 0.50 meters water equivalent 100 m^–1 for the years 2000, 2010, and 2016 and included a sensitivity analysis that applied …

Perceptions Of Vulnerability To Flooding, Hurricanes, And Climate Change On Grand Isle, Louisiana’S Only Inhabited Barrier Island, Lauren Miller

Graduate Student Theses, Dissertations, & Professional Papers

This study used in-depth interviews of permanent residents on Grand Isle, Louisiana, a remote barrier island, to better understand their perceptions of structural flood measures, non-structural responses to flooding and hurricanes, and perceptions of vulnerability to flooding, hurricanes, and climate change on a remote barrier island-Grand Isle, Louisiana. Residents' perceptions regarding the various structural measures implemented by the federal, state, and local government appeared mixed. Non-structural responses to flooding risks implemented at the household, community, state, and federal level continue to strengthen resiliency on Grand Isle. According to interviewees, aspects of environmental, rural, and economic vulnerability on Grand Isle impact …

Looking Past, Looking Forward: America's National Parks, Archaeology And Climate Change, Rachel Marie Blumhardt

Undergraduate Theses, Professional Papers, and Capstone Artifacts

America’s National Parks are rich with cultural history, flora, fauna and some of nature’s most impressive landscapes. As climate change continues to accelerate, these parks and their cultural and natural resources are being threatened. In this project, I will present a colorful, informational booklet that concentrates on 4 specific parks: Yellowstone National Park, National Park of American Samoa, Glacier Bay National Park and Mesa Verde National Park. I will focus on the archaeology and cultural significance of these parks, while also examining the ways that climate change is putting these, and other associated assets of the parks, at risk. I …