Digital Commons Network^™

Understanding The Underidentification Of Autism In Native American Students, Emily A. Brooke

Graduate Student Theses, Dissertations, & Professional Papers

School psychologists are called upon to promote nondiscriminatory practices that ensure equity and fairness for all youth, including racially minoritized students. Despite being overrepresented in almost every other disability category of special education, Native American students nationwide are underrepresented within the category of autism. The current study focuses on factors within educators that might lead to the underidentification of Native American students with autism. In alignment with the cultural humility model, and the tripartite model of multicultural competence embedded within it, the current study explored 36 educators’ attitudes, knowledge, and skills as they relate to the culturally responsive assessment of …

Characterizing Riverine Carbon: A Spatiotemporal Study Of Organic And Inorganic Carbon Variability And Evaluation Of Methods For Quantifying Pco2, Fischer Larson Young

Graduate Student Theses, Dissertations, & Professional Papers

Carbon is a critical component of aquatic ecosystems. For inland waters, carbon is a basal resource for biological communities and is a key component of trophic transfer through ingestion and respiration processes. Additionally, carbon acts as a key biogeochemical tracer that can track chemical, physical, and biological processes from the terrestrial landscape to inland waters to the ocean. Riverine carbon, however, can be challenging to characterize and interpret due to the complexity of its sources and sinks along a riverine continuum. Included in this work are the biogeochemically relevant forms of carbon such as dissolved inorganic carbon (DIC), the partial …

Toward A Dialectical Account Of Nature, Georgia Rae Grimm

Graduate Student Theses, Dissertations, & Professional Papers

The protection of nature has been a central aim of environmentalism for well over a century. However, the concept of nature has been subjected to abundant critiques in recent literature, threatening the conceptual tenability of this goal. In this paper, I discuss why I find the concept of nature too valuable to dismiss and offer an account of nature that I believe remedies existent critiques. In Chapter 1, I recount arguments for the protection of nature and illustrate their dualistic underpinnings. In Chapter 2, I discuss issues with dualistic accounts of nature and demonstrate why Steven Vogel’s monistic alternative is …

Applying Resource Selection Probability Function (Rspf) To Understand Floral Resource Use By A Common Bumble Bee, Bombus Vancouverensis, Rebekah Brassfield

Graduate Student Theses, Dissertations, & Professional Papers

Bumble bees (Hymenoptera: Bombus) are important pollinators in temperate ecosystems worldwide with seasonal caste variations involving queens, workers, and drones. Like all organisms, they must meet their nutrient requirements for successful growth and development by using several floral resources over time. When resource use is in greater proportion to its abundance on a landscape, that use is considered selective. To examine resource use within the context of abundance, a resource selection probability function (RSPF) was applied to examine floral resource use through a flowering season by a common bumble bee, Bombus vancouverensis. The RSPF framework was used to examine 1) …

Using Bone Biology To Enhance Forensic And Paleoanthropological Dna Analysis, Keith M. Biddle

Graduate Student Theses, Dissertations, & Professional Papers

We know that the optimal site for DNA extraction from human skeletal remains lies primarily in the petrous portion of the crania, and secondarily in the dental pulp, but we do not know why. As for the optimal location in the post-crania, targeted extraction sites are based on experience or inference, not empirical data. So, where to sample for DNA when only post-cranial elements are available? There are many instances where the petrous and/or teeth are not present or cannot be sampled. The three main goals of the project are 1- develop our foundational knowledge of the underlying cellular and …

Seeding Resilience: An Examination Of The Impacts Of A Seed Saving Network In Western Montana, Christina Leas

Graduate Student Theses, Dissertations, & Professional Papers

Seed saving, a worldwide practice as old as agriculture, continues even in the context of an increasingly industrialized and globalized agricultural system. While some scholarship has focused on informal seed saving practices that continue to thrive in the global South, few studies have examined the dynamics of these practices in the global North, particularly in the American West. Informal seed saving systems have implications for the resilience of agroecosystems. The concept of resilience has become an important framework for conceptualizing agroecosystems as social-ecological systems, both in scholarship and in policy. However, operationalizing the concept of resilience, particularly in agroecology research, …

Structural Mechanism Of Nuclear Receptor Biased Agonism, Michelle Deanna Nemetchek

Graduate Student Theses, Dissertations, & Professional Papers

Nuclear receptors are a class of ligand-activated transcription factors that affect gene expression. Pharmaceutical drugs that target nuclear receptors make up (13%) of all therapeutics prescribed in the United States. Unlike signaling pathways, nuclear receptors have a wide variety of binding partners that can bind upon activation of a nuclear receptor to upregulate gene transcription. These binding partner proteins, called “coregulators”, are diverse in function. However, the determinants of their binding to nuclear receptors, and how binding to certain coregulators over others occurs, is not known.

In this work, we examine how ligands create a preference for nuclear receptors to …

Development Of The Novel Isoxazolo[3,4-D]Pyridazinone Scaffold, Which Positively Modulates The Metabotropic Glutamate Receptor Subtypes 2 And 4, Christina Ann Gates

Graduate Student Theses, Dissertations, & Professional Papers

The seven transmembrane (7TM) superfamily, also known as G-protein coupled receptors (GPCR), are one of the largest superfamilies in the human genome. With approximately 30% of marketed drugs targeting the GPCRs, these proteins are among the most successful as therapeutic targets. Within the GPCR receptor family there is a subgroup called the metabotropic glutamate receptors (mGluR). Compounds that target mGluRs are important for the treatment of a variety of central nervous system (CNS) disorders, as well as cancer. The mGluR2 subtype is a target for treatment of anxiety and schizophrenia. Activation of mGluR4 helps to ease the symptoms of Parkinson’s …

The Waning Days Of Projection In The Mountain West, Samuel Gwinn Dunnington

Graduate Student Theses, Dissertations, & Professional Papers

The Waning Days of Projection in the Mountain West is a novel featuring a young narrator named Argus, who worked for years as an apprentice and assistant to a documentary filmmaker named Max Morgen. The novel begins years after Argus and Max have gone their separate ways. Max has recently died, and his final wish was that his son send Argus all the footage they’d acquired over their years together in order to edit and complete the film Max originally set out to make. Argus must decide how to proceed.

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 …

A Comprehensive Forensic Case Report With The University Of Montana Forensic Anthropology Lab University Of Montana Forensic Case #167, Tyler J. Trettin

Graduate Student Theses, Dissertations, & Professional Papers

This report consists of an inventory of the skeletal remains of case# 167, assessment of the minimum number of individuals (MNI), a biological profile if possible, and a literature review of the assessment and understanding of ballistic trauma. The skeletal remains are consistent with an MNI of one. The remains are likely from a male individual, and skeletal features are representative of a person of Caucasian ancestry. The individual is estimated to be between of 35-65 years old with an estimated stature of between 5’5” and 5’9”.

Y-Chromosome Dna Extraction From Post-Cranial Skeletal Elements, Mykala D. Ward

Graduate Student Theses, Dissertations, & Professional Papers

The use of DNA in forensic science has become an integral tool for victim and perpetrator identifications, missing person’s cases, paternity testing, etc. A major use of DNA is in the identification of unknown deceased individuals. With a reported number of individuals well over 8,000 in the United States, improved methods to accurately collect and analyze DNA from modern human bone are needed.

This project took the preliminary steps to improve DNA sampling and extraction methods by analyzing the Y-chromosome DNA yield from the two bone types. While both types are composed of the same materials, cortical bone is the …

Morphometric Ancestral Analysis Of Infraorbital Foramen And Maxillo-Facial Landmarks Of Adult North American Skulls Using X-Ray And Computed Tomography Scans, Anna-Marie Lynn David

Graduate Student Theses, Dissertations, & Professional Papers

Skeletal remains provide a variety of information about a species population and the sub populations within that species. The infraorbital foramen has previously been used to understand dietary niches, paleoecology, the nervous system, and the effect of the nervous system on other bone functions in the facial region in humans and other mammals. In medicine, the precise location of the infraorbital foramen has been studied to aid and guide maxillo-facial procedures and surgeries. In this research project, the null hypothesis states that the placement and location of the infraorbital foramen in relation to other facial landmarks were the same between …

The Genetic And Demographic Outcomes Of Mixed-Source Reintroductions Of Westslope Cutthroat Trout In Montana, Colter Austin Feuerstein

Graduate Student Theses, Dissertations, & Professional Papers

No abstract provided.

Deriving Surface Fuels From Uas Imagery Forfire Models, Matthew R. Cunningham

Graduate Student Theses, Dissertations, & Professional Papers

Understanding how fuel, weather, and terrain interact to produce fire behavior continues to motivate fire science andhas resulted in development of new physics-based fire behavior models that place increased demands on input data such as fuels. Recent technological advancements in computing, unmanned aerial systems (UAS), and sensors (RGB, multispectral, thermal, and hyperspectral cameras) can provide new opportunities for land managers and scientists to advance knowledge of fuels and fire behavior and their interactions on the landscape. In this study, imagery from high resolution multispectral cameras mounted on UAS were used to build orthomosaics and point clouds of surface fuelbeds in …

Unleaded: Montana’S Silent Epidemic, Erica Zurek

Graduate Student Theses, Dissertations, & Professional Papers

Lead is a cumulative toxin that can affect multiple systems in the human body. Exposure occurs through various sources, such as outdated and deteriorating infrastructure, paint, soil and drinking water. This project, a three-part audio series on lead exposure in Montana highlights various paths of exposure and how young children under age six years of age are particularly vulnerable. Part one is a story about a new state requirement to test all k-12 schools for lead in water fixtures. Part two: A house remodel exposes a family’s children to lead. Getting a diagnosis wasn’t easy. Part three: A look at …

The Effects Of Fatigue On Landing Impact Forces And Postural Steadiness In Collegiate Volleyball Players, Zebadiah P. Boos

Graduate Student Theses, Dissertations, & Professional Papers

Background: The onset of exhaustion can reduce the performance of an athlete and may add to the risk of injury. This establishes the necessity to understand when and how the athlete’s performance is altered as they become fatigued in competition or practice. The aim of this study was to determine the effects of fatigue on dynamic and static tasks in collegiate volleyball athletes by implementing a fatiguing jump protocol. Methods: To replicate an in-game or in-practice situation, five sets of 30 countermovement jumps (CMJ) at 85% maximal height was implemented. Prior to the fatigue protocol, a baseline measure of CMJ …

Evaluating The Use Of Camera Traps To Monitor Populations Of Ungulate Prey In The Russian Far East, Scott Johnston Waller

Graduate Student Theses, Dissertations, & Professional Papers

Efforts to recover endangered carnivore populations are often limited by insufficient populations of prey. When recovering prey populations, estimates of population density are invaluable metrics to monitor recovery efforts. In Russia, wildlife managers use the Formozov-Malyushev-Pereleshin (FMP) snow tracking method to estimate densities of ungulate prey of the Amur tiger (Panthera tigris). Yet, increasing variability in snow conditions and other challenges have limited its reliability. Camera traps offer a promising alternative approach since managers already use cameras to monitor tigers. However, the assumptions and study design necessary to implement capture-recapture models for tigers are different from those needed …

Underwater: Science & Story In Aquatic Communities, Lena J. Beck

Graduate Student Theses, Dissertations, & Professional Papers

How do we manage fish species, and how do fish, in turn, impact us? This portfolio of three stories will explore some of the ways in which humans interact with aquatic landscapes. First, we’ll go to Flathead Lake in Montana, where invasive lake trout have all but decimated native trout species, and learn what the Confederated Salish and Kootenai Tribes are doing to address the issue. Then, we’ll examine stories of a legendary Big Fish in Alaska’s Lake Iliamna, and think about what it means to scientifically prove something as real. The last story looks at the aquaculture industry in …

The Combination Of Tlr7/8 And Tlr4 Adjuvants In An Influenza Vaccine Produce Unique Antigen-Specific Adaptive Immunity And Protect Against Lethal Heterologous Influenza Challenge, Shelby Lynn Cole

Graduate Student Theses, Dissertations, & Professional Papers

Influenza virus infection is a global health concern resulting in death and illness each year, which disproportionally effects high-risk individuals. While there are several approved vaccines for seasonal influenza, there are some limitations to consider: current vaccines provide minimal cross protection against seasonally drifted influenza subtypes, influenza vaccine strains change each year, requiring timely manufacture of a new vaccine. Thus, vaccines capable of inducing a more robust and broadly protective immune response to multiple influenza subtypes remains a critical unmet need. Adjuvants and novel delivery systems are an interesting and promising avenue of exploration for enhancing and broadening seasonal influenza …

Polya: A Tool For Adjudicating Competing Annotations Of Biological Sequences, Kaitlin Carey

Graduate Student Theses, Dissertations, & Professional Papers

Annotation of a biological sequence is usually performed by aligning that sequence to a database of known sequence elements. When that database contains elements that are highly similar to each other, the proper annotation may be ambiguous, because several entries in the database produce high-scoring alignments. Typical annotation methods work by assigning a label based on the candidate annotation with the highest alignment score; this can overstate annotation certainty, mislabel boundaries, and fails to identify large scale rearrangements or insertions within the annotated sequence. Here, I present a new software tool, PolyA, that adjudicates between competing alignment-based annotations by computing …

Soda: An Open-Source Library For Visualizing Biological Sequence Annotation, Jack W. Roddy, Travis J. Wheeler

Graduate Student Theses, Dissertations, & Professional Papers

Genome annotation is the process of identifying and labeling known genetic sequences or features within a genome. Across the various subfields within modern molecular biology, there is a common need for the visualization of such annotations. Genomic data is often visualized on web browser platforms, providing users with easy access to visualization tools without the need for installing any software or, in many cases, underlying datasets. While there exists a broad range of web-based visualization tools, there is, to my knowledge, no lightweight, modern library tailored towards the visualization of genomic data. Instead, developers charged with the task of producing …

Resilience, Childhood Trauma History, And Foster Care Experience In College Students, Ashlyn M. Kincaid, Ashlyn M. Kincaid

Graduate Student Theses, Dissertations, & Professional Papers

No abstract provided.

The Backfiring Effects Of Forced Political Allegiance In The Online World: The Case Of Preferred Pronouns On Twitter, Yin Lok Linus Chan

Graduate Student Theses, Dissertations, & Professional Papers

Political divisions in the United States have led to conflating political issues with political parties. People who possess a set of intercorrelated beliefs (e.g. pro-immigration, prochoice) are assumed to be liberal, while those who hold opposing intercorrelated beliefs are assumed to be conservative. Impression management research suggests that in the online world, minor cues on one’s social media profile that display political beliefs serve as indicators of people’s political ideology. While people are free to declare their political views on personal social media accounts, what happens when people perceive that they are forced to appear aligned with one political group …

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 …

Reading The Bones: A Taphonomic Investigation Of Archaeofaunal Remains Recovered From Site 48pa551, Northwest Wyoming, Morgan H. Thurman

Graduate Student Theses, Dissertations, & Professional Papers

This is a preliminary taphonomy study of archaeofaunal remains found at site 48PA551, more commonly known as the Dead Indian Creek Site. 48PA551 is a well-known and commonly cited example of a McKean Complex occupation dating to between 3,800 and 4,800 B.P. The University of Montana held a field school at the site conducting small test excavations under the supervision of Dr. Anna Marie Prentiss in 2018. In the course of this testing a highly fragmentary bone bed consisting mostly of mammalian bone, cervids largely, was discovered eroding into the nearby creek. Ten 50 x 50 cm quadrants were excavated …

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 …

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 …

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 …

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 …