Digital Commons Network^™

Concentration And Composition Of Nanoparticles And Colloidal Particles In A Mine-Waste Contaminated River, Kaitlin Rose Perkins

Graduate Student Theses, Dissertations, & Professional Papers

Metals and metalloids (metal(loid)s) in aquatic ecosystems are often described through measures of their concentrations in whole and filtered waters. The filtered fraction is operationally defined as “dissolved,” and assumed to be primarily composed of free metal(loid) ions or of ions bound by low molecular weight organic matter. This definition ignores that the dissolved fraction also likely contains colloidal particles (1 to 1000 nm) that can pass through commonly used filters. This colloidal fraction can also be preferentially removed from the water column by algae and other aquatic organisms compared to free metal(loid) ions and organic bound metal(loid)s. Though they …

The Influence Of Wildland Urban Interface Areas On Resource Assignments To Large Wildland Fires, Kurt Swimley

Graduate Student Theses, Dissertations, & Professional Papers

We examine the relationship between U.S. wildfire resource assignments and fire proximity to inhabited areas. Climate change and previous vegetation buildup have enabled more severe fire seasons, while more structures are being developed near vegetated, wildland areas. These changes have contributed to a steep increase in the overall cost of wildfire management, the annual costs of which regularly rise into the billions (NIFC, 2021). Still, the extent to which each driver of suppression costs contributes to the increase in spending is not entirely understood. Previous studies have shown that more suppression resources are allocated to fires near inhabited areas, …

A Moral Influenza: An Historical Archaeological Investigation Of The Prohibition Era In The United States 1920-1933, Kelli Michele Casias

Graduate Student Theses, Dissertations, & Professional Papers

The following exploration of National Alcohol Prohibition in the United States employs an interdisciplinary approach to understand the impetus of the large-scale defiance of liquor laws and to identify the physical manifestations of the social process of mass resistance in the archaeological record. Historical documentation, newspaper publications, oral histories, landscape analysis of road development in Montana, and an archaeological survey of a mountain homestead site where manufacturer of illicit alcohol took place are used to contextualize the Prohibition Era from the perspective of the offender. The research goals of this work are varied and include documentation of the archaeological footprint …

Biobehavioral Predictors Of Executive Function Decline In Mid- And Late Life Adults, Cali Anne Caughie

Graduate Student Theses, Dissertations, & Professional Papers

Using data from the Midlife in the United States (MIDUS) Longitudinal Study of Health and Well-Being, this study examined high frequency heart rate variability as a longitudinal predictor of cognitive change in key executive function domains: inhibition, shifting, and updating. This study further explored the interactions between HF HRV and important health factors (inflammation, stress, sleep, and mood and anxiety) in predicting executive function decline.

The results of this investigation demonstrated that while high frequency heart rate variability and inhibition decline were correlated, HF HRV was not a significant predictor of decline in any executive function. However, results did show …

Linking Seismicity And Time-Variant Loading Of The Solid Earth, Mason Perry

Graduate Student Theses, Dissertations, & Professional Papers

Earth’s surface is constantly being stressed and deformed by countless dynamic processes that operate across a vast number of time and spatial scales. In this dissertation, I use geodetic observations in combination with time series analysis, basic numerical modeling, and a number of statistical tools to investigate the sources loading and observable deformation of earth’s surface and their relation to seismic activity.

In Central Asia, compressive stresses resulting from the collision of the Indian subcontinent and Eurasia have created a tectonically complex region that includes the best present-day example of ongoing subduction of continental lithosphere. Here, continental Eurasia is actively …

Theories On The Pedagogy Of Asla (Accelerated Second Language Acquisition): A Piikuni Student Approach, Robert Patrick Hall

Graduate Student Theses, Dissertations, & Professional Papers

This thesis is an exploration in the pedagogy of ASLA to understand how and why it is successful at being a methodology that enables an instructor to teach endangered languages effectively. The paper explores the current deficits within language revitalization programs and argues that ASLA can improve endangered language programs

The Effects Of Heavy Metal Contamination In Soil On Dna Degradation After Decomposition, Samantha Hofland

Graduate Student Theses, Dissertations, & Professional Papers

The application of DNA is an ever-expanding field of research with many implications in the field of forensic investigation. Research into DNA obtained from soil is ongoing and suggests a new avenue in forensic investigation. This research seeks to understand the effects of heavy metal on the preservation of DNA within soil after decomposition of remains. Using pigs as a proxy for human remains, the effects of heavy metal contamination on the microbial environment and endogenous pig DNA was observed. This gave broad insight into the effect of surface burial and Western Montana; summer climate has on DNA degradation.

Admissions & Bitterroot, Jesse Thomas Nee-Vogelman

Graduate Student Theses, Dissertations, & Professional Papers

No abstract provided.

Lightman, Cynthia Ann Marbut

Graduate Student Theses, Dissertations, & Professional Papers

My thesis is a work of fiction wherein I imagine some of the potential transformations climate change will bring to the planet. Lightman is set in the near future with a touch of science fiction. The novel explores the power of community and the importance of multiple perspectives and knowledge systems. The plot revolves around the struggles of a group of characters living in a post-apocalyptic moment created by climate change. In this time, all modern infrastructure collapses, leaving my characters to learn how to survive without benefit of technology while traveling through a wilderness. They will encounter risks to …

Toward A Child-Friendly Worldview Measure, Shailee Rose Woodard

Graduate Student Theses, Dissertations, & Professional Papers

Worldview is an individual difference construct that is linked to various social, behavioral, and mental health outcomes, such as prejudice (Greenberg & Arndt, 2011), adaptive versus maladaptive behaviors following a natural disaster (Call, 2012), and PTSD symptoms (Jinkerson, 2016). However, very little is known about how worldviews develop. Research on child and adolescent worldviews is greatly impeded by the lack of a child-friendly worldview measure. This dissertation project aims to fill this gap by developing and validating such a measure. This 20-item measure, the Unified Worldview Measure – Child Form (UWM-CF), was adapted from a previously-validated adult measure of worldviews, …

Beside| |Between, Brooke J. Armstrong

Graduate Student Theses, Dissertations, & Professional Papers

Beauty and the grotesque both induce physical sensations in the body. Pleasure and displeasure are two points on the same line. They are not mutually exclusive. Like the body and the vessel, like the self and the other all things exist in reciprocity. The capability of holding brings agency, breaking down perceptions of of subject-object relationships. The works presented in this paper represent a merging and a transformation of perceived separate entities. Craft history and processes inform the work present in the thesis exhibition, Beside| |Between.

Development Of A Novel In-Situ Chemical Sampler For Aquatic Systems, Alec W. Johnson

Graduate Student Theses, Dissertations, & Professional Papers

There has been a long-standing need to study Dissolved Organic Carbon (DOC) within aquatic systems. DOC is an important water quality parameter that provides insights into ecological and carbon cycle processes in aquatic systems. DOC is not easily studied due to traditional, labor-intensive sampling methods. Often, optical (e.g. fluorescence) proxy estimations for DOC are used instead of directly sampling for DOC. Using either low frequency measurements or proxy estimations for DOC can lead to inadequate understanding of the natural processes that control DOC in aquatic systems.

This thesis outlines a in-situ sampler that will be capable of collecting, preserving, and …

Petrogenesis And Tectonic Implications Of Cordierite-Orthoamphibole Gneisses (Cog) In The Nw Wyoming Province, Brianna K. Crenshaw Ms

Graduate Student Theses, Dissertations, & Professional Papers

Studying cordierite orthoamphibole gneisses (COG) from five different mountain ranges across the Montana Metasedimentary Terrane (MMT) of the Wyoming Province offers a unique opportunity to elucidate the enigmatic origins and petrogenesis of the lithology in addition to gaining a further understanding of Precambrian crustal assembly processes. Geochemical analyses suggest that COG originates from a basalt that underwent metasomatic alteration, likely via seawater, prior to metamorphism. Moreover, COG is considered to represent oceanic crust that was part of the epicontinental sea adjacent to the Wyoming Province before collision with the Medicine Hat Block. Field observations of associated lithologies such as marbles, …

The Ecology Of Puha: Identity, Orientation, And Shifting Perceptions Reflected Through Material Culture And Socioreligious Practice, Aaron Robert Atencio

Graduate Student Theses, Dissertations, & Professional Papers

This dissertation explores the assertions that changes in form, function, practice, and perceptions of puha primarily arose from the dispossession of landscapes and oppression of specific religious practices due to Euro-American contact, resource depletion, and reservation confinement. The reservation era placed the indigenous populace into a state of purgatory where treaties and peace relations were consistently repositioned and reneged. The perceptions of the indigenous inhabitants pre and post Euro-American contact detail critical moments that assisted in shaping the dynamic relationship between socioreligious perceptions and the Eastern Shoshone’s identity. What is displayed is a unique set of circumstances that assisted in …

No Answering Riot, Jacob Z. Bienvenue

Graduate Student Theses, Dissertations, & Professional Papers

I left this morning for Portland, Oregon—could be for good. Told my dear mother I was taking a day trip then hopped in her dinged up black Audi and felt the thing hum alive beneath me. Her speakers were still good, so I threw on a playlist with Bob Dylan and Woody Guthrie and all of the ragged traintrack prophets and went roaring out of those gilded hills for hopefully ever. There was no traffic getting to Sacramento; it took me just twenty minutes to hit the I-5 North juncture and after that I went peeling up the central flatlands …

Ungulates Search For The Ideal Home: How Predation And Forage Differentially Affect Males And Females In A Partially Migratory Population, Hans William Martin

Graduate Student Theses, Dissertations, & Professional Papers

Migration is a strategy used across taxa to access resources in temporally heterogenous landscapes. Migratory species can attain higher abundances because access to higher quality resources, and/or reduction in predation risk. However, most migratory species occur in partially migratory populations, a mix of migratory and non-migratory, resident individuals. I first investigate the potential mechanisms maintaining partial migration in a partially migratory elk (Cervus canadensis) population. I test whether the theory of Ideal Free Distribution (IFD) can explain the coexistence of different migratory tactics in a partially migratory population. IFD predicts that individuals exhibit density-dependent vital rates and should select different …

Adobe Sugar, Liana Espey Woodward

Graduate Student Theses, Dissertations, & Professional Papers

With a backdrop of Santa Fe, New Mexico, Adobe Sugar is a collection of poems that finds divinity in the mundane through exploration of youth, decadence, and nourishment.

The Worm In Heaven, Daniela Rae Garvue

Graduate Student Theses, Dissertations, & Professional Papers

No abstract provided.

Buffalo In The Mountains: Mapping Evidence Of Historical Bison Prescence And Bison Hunting In Glacier National Park, Kyle Langley

Graduate Student Theses, Dissertations, & Professional Papers

This study explores 10,000+ years of bison presence and bison hunting within Glacier National Park. Despite significant faunal evidence of bison presence in the area, few people today associate bison with Glacier National Park. Previous archaeological studies have found bison faunal remains and evidence of bison hunting throughout the eastern half of the park going back thousands of years. Furthermore, local tribes such as the Kootenai and Blackfeet maintain oral traditions that detail ancestral hunting strategies and practice in the region. This project reviews all of these sources to contextualize the archaeological signatures of bison and tell the story of …

Teacher’S Use Of Reflective Thinking, Kathleen M. Hill

Graduate Student Theses, Dissertations, & Professional Papers

This qualitative case study examined how teachers use reflective thinking. Teachers participating in a professional development course designed to increase knowledge and understanding of reflective thinking were investigated. Two of those teachers were looked at in depth. Data was collected and organized on four teacher practices: planning, implementation, questioning, and professional reflection. Based on the findings, teachers use reflective thinking for lesson planning, interacting with students, and for personal and professional growth. Lasting impacts on professional reflection were evident for one participant after ten months. This study tells the story of two teacher’s understanding and use of reflective thinking.

Prepare To Pivot: Shifting From The Projection Surface To The Zoom Screen Necessitated By Global Pandemic, David E. Mills-Low

Graduate Student Theses, Dissertations, & Professional Papers

Design for theatre is an endeavor in which the physical, the corporeal, the defined, is applied to an ephemeral artform, one meant to happen only in the moment and then fade away. As such, building the world of the theatrical space, whether physical or digital, is similar to shooting at a moving target. While one angle of approach may be perfect for a moment, being ready and flexible enough to pivot, whether to reimagine due to limitation or to adjust an entire project due to calamity, like the shift from in person to online streaming. This paper investigates the joy …

Controls On No3-N Dynamics In The Upper Clark Fork River, Montana, Jacob Anthony Prater

Graduate Student Theses, Dissertations, & Professional Papers

Studies relating ecosystem energetics to nutrient uptake in streams have generally found respiration to be a more dominant control on nutrient dynamics relative to primary production due to light limitation in most low-order systems. In this study, I measured biomass, hydrology, metabolism, and dissolved solutes in an open-canopy mid-order river located in western MT. Daily stream metabolism was modeled using a modified single-station, open-channel method, and measures of dissolved solutes were evaluated at both local and reach scales to examine how point-measures and those integrated through space represent biogeochemical behavior. Metabolic rates and standing stocks of benthic organic matter were …

A Personal History Of Invasive Hands And Endangered Lovers, Samuel Paul Boudreau

Graduate Student Theses, Dissertations, & Professional Papers

I thought I could be ridden hard and put away wet, wet, wet. I thought death and rape and drunkenness and unrequited love were functions of a typical life, a this-is-how-it-goes kinda world. But, as I’ve emerged from hellish muck, there has been a realization: the way we treat each other and the soil, the aching earth, needs to change. “A Personal History of Invasive Hands and Endangered Lovers” explores the relationship between intimacy and pain through a history of ecology and consumption, a melancholy of sorts. It amplifies trauma as a call-to-action and refuses to sit and take it. …

Effects Of Weather, Parental Behavioral Plasticity, And Life History Traits On Offspring Growth, Development, And Energy Expenditure In Songbirds, Adam Elliot Mitchell

Graduate Student Theses, Dissertations, & Professional Papers

Weather creates energetic and survival challenges for organisms that can influence demography. Harsh weather often causes increased energy expenditure in adults, but how weather affects other life stages is less well understood. Juveniles are especially vulnerable because they must use energy to survive weather effects and maintain growth and development while having poorly developed thermoregulatory capabilities. Juveniles that spend energy overcoming harsh weather can have delayed growth and maturation, which can negatively affect competitive abilities, survival, and lifetime fitness. Understanding weather effects on offspring is particularly challenging in altricial species because parents have evolved strategies to ameliorate such effects. However, …

Links Between Interspecific Competition And Infectious Disease: A Mechanistic Investigation With A Directly-Transmitted Zoonotic System, Andreas Elefttheriou

Graduate Student Theses, Dissertations, & Professional Papers

Globally, biodiversity is declining while emerging infectious diseases are on the rise. To explain this pattern, the “dilution effect” hypothesis predicts that with lower diversity, disease increases, because diversity “dilutes” disease. Although there is strong support for this hypothesis, there is evidence to support the “amplification effect” hypothesis, which predicts lower disease with lower diversity. Recently, there has been a push to investigate underlying mechanisms than general patterns to create a more mechanistic framework across disease systems. However, mechanisms have been mostly examined with indirectly-transmitted disease systems (e.g., Lyme disease), while less attention has been directed towards directly-transmitted systems, such …

Mechanisms Of Engineered Nano-Material Induced Membrane Disruption And Lysosomal Membrane Permeability, Matthew Josiah Sydor

Graduate Student Theses, Dissertations, & Professional Papers

Engineered nano-materials (ENM), which have at least one dimension less than 100 nm are an emerging group of materials that are widely used in everyday products and workplaces. Because of the wide variety of ENM and their use in today’s society, there is a concern for the impacts of ENM on human health following exposure. While humans could be exposed to ENM through various routes, there is significant concern for inhalation of ENM due to their size and ease of aerosolization. Studies have reported that ENM can deposit into the lungs, particularly in the alveoli, where resident macrophages can encounter …

Linking Habitat, Populations And Policy For Caribou In The Face Of Increasing Disturbance, Eric Charles Palm

Graduate Student Theses, Dissertations, & Professional Papers

In North America’s boreal forest, wildfire has long been the dominant form of natural disturbance. However, the human footprint in the region is steadily growing. Large-scale forest harvest and energy development have fragmented late-successional forests, leading to habitat loss for species such as caribou (Rangifer tarandus) that rely on these ecological communities. Caribou have experienced widespread population declines and local extirpation throughout the western boreal forest in recent decades. I first analyzed caribou resource selection responses to fires in >685 female caribou across 15 populations that span a wide gradient of fire frequency but are exposed to relatively little human …

Developing The Label Avoidance Measure Of Stigma: A Preliminary Psychometric Review, Julia J. Cameron

Graduate Student Theses, Dissertations, & Professional Papers

Stigma acts as a barrier to treatment for mental health concerns. Label avoidance, one of several different aspects that compose the overarching concept of stigma, captures the stigma involved when individuals avoid social institutions that might confer a psychiatric diagnostic label and would mark them as an individual with a mental health problem. Label avoidance has been described as a key stigma construct in the literature but has been sparsely studied. Answering a call in the field for new, psychometrically sound stigma measures, we created a new measure of label avoidance and acquired initial validity and reliability evidence supporting its …

Investigating Surface Temperature From First Principles: Seedling Survival, Microclimate Buffering, And Implications For Forest Regeneration, Robin Rank

Graduate Student Theses, Dissertations, & Professional Papers

Forests are extremely important ecosystems with large impacts on global water, energy, and biogeochemical cycling, and they provide numerous ecosystems services to human populations. Even though these systems consist of long-lived vegetation, forests are constantly experiencing changes to their extent and composition through the interacting forces of disturbance dynamics and climate change. In semi-arid landscapes like the western United States, patterns of recurring wildfire and subsequent seedling recruitment and forest regeneration are important in establishing the distribution of forests on the landscape. In this context, climate, hydrology, and existing vegetation all act together to limit the current and potential range …

The Place Of Community Food Forests: A Review And Case Study Of Community Food Forests And Their Untapped Potential, Sarah Eiden

Graduate Student Theses, Dissertations, & Professional Papers

As population grows, the borders of urban and peri-urban areas continue to expand. The UN projects that by 2050 more than 68% of the world population is expected to live in urban areas (UN, 2018). Presently, urban centers are heterotrophic, or highly consumptive of products produced elsewhere, making them one of the most pressing challenges to global sustainability (Wu, 2008). With an ever-increasing imperative for more sustainable food production, multi-use edible green landscapes and other autotrophic, or self-feeding urban agriculture initiatives, are gaining attention and creative practice to incorporate a diversity of ecosystem services (ES). Community food forests (CFF) are …