Digital Commons Network^™

Methyl-Cpg Binding Proteins Mediate Octopaminergic Regulation Of Complex Behavioral Traits, Tarun Gupta

Graduate Student Theses, Dissertations, & Professional Papers

An organism’s survivability in the natural world is contingent to its ability to respond rapidly and appropriately to various cues and challenges in its physical and social environment. The dynamicity of various environmental and social factors necessitates plasticity in morphological, physiological and behavioral systems – both at the level of an individual organism and that of a species. For more than century, natural selection of existing genetic variation in populations has helped us understand such plasticity across generations. However, recent years have seen a re-emergence of somewhat contentious quasi-Lamarckian framework with which organisms can reliably transmit acquired traits to subsequent …

Experiences Of American Indians In Natural Resource Degree Programs, Ruth Ann Swaney

Graduate Student Theses, Dissertations, & Professional Papers

American Indians are a demographic who has been historically excluded from higher education and are still underrepresented, especially in the field of natural resources. The purpose of this research is to examine the educational experiences of American Indians in such programs. With respect to factors that may influence educational experiences, special attention was focused on the effect of traditional culture on their learning and the impact of the educational frameworks in their degree programs. The research design was guided by two research paradigms: indigenous research methodologies and hermeneutics. Thirty individuals stories and experiences were explored through the use of in-depth …

Landscape To Local: A Multi-Scale Evaluation Of Voluntary Efforts To Reduce Fragmentation And Enhance Management Of Rangelands For Sage-Grouse, Joseph Tyler Smith

Graduate Student Theses, Dissertations, & Professional Papers

For imperiled species, the hierarchical nature of habitat selection suggests the need for a hierarchical approach to conservation: address threats to persistence operating at broad scales on populations before focusing on the quality of patches or availability of particular resources used by individuals. We apply this approach to conservation and management of habitat for greater sage-grouse (Centrocercus urophasianus) in the eastern portion of their range where cropland conversion continues to fragment sagebrush grasslands. Using locations of active leks in portions of Montana, Wyoming, North Dakota, and South Dakota as spatial indices of populations, we found sage-grouse distribution was highly sensitive …

Determining The Barriers To And Opportunities For Community Involvement In The Management Of The Nanda Devi Biosphere Reserve, Uttarakhand, India, Trisha Singh

Graduate Student Theses, Dissertations, & Professional Papers

Today’s global political environment places a high value on social equality and economic well- being. In this climate, emphasizing biodiversity conservation over socio-economic development through exclusionary methods of habitat protection has become ethically questioned and politically dangerous. The goal of this research was to understand the barriers and opportunities for local involvement in the management of the Nanda Devi Biosphere Reserve in Uttarakhand, India. We attempted to understand the feasibility of local community involvement in the management of the NDBR from the perspective of policy-making organizations and that of the local communities.

Key findings highlight barriers to community participation at …

Conservation Genetics On The Frontline, Kenneth W. Rand

Graduate Student Theses, Dissertations, & Professional Papers

Conservation genetics stands out as an effective tool for discovering and monitoring rare, endangered or invasive populations of plants and animals. Particularly when compared to traditional search and capture methods, it provides more holistic studies to preserve the disappearing biodiversity of the American West and the world.

Three stories highlight the work done to preserve biodiversity through the use of conservation genetics:

1. Trout Rescue: A new hope for westslope cutthroat in Montana How to save a disappearing westslope cutthroat trout through genetic rescue by adding genetic diversity to ensuring future survival in increasingly warming waters more harm than good. …

Spatio-Temporal Analysis Of Ungulate Browsing On Willow (Salix Spp.) Communities Within The Northern Range Of Yellowstone, Donald L. Belile Jr.

Graduate Student Theses, Dissertations, & Professional Papers

Variation in ungulate browsing intensity on willow (Salix spp.) communities across Yellowstone’s northern range has been attributed to various biophysical factors including climate, topography, and predators. These studies were conducted without a long-term browsing dataset; they lacked a spatially extensive sampling design, and did not include dynamic snow characteristics known to affect ungulate mobility, habitat selection, and foraging strategies. We therefore focused on snow, an extreme landscape level disturbance that places nutritional stress on ungulates during the winter when most browsing on shrubs occurs. We applied a non-destructive sampling method by consecutively recording whether stem leaders were browsed between …

Human Shields And Redistribution Of Prey Species Complicate The Utility Of Protected Areas As Ecological Baselines, Wesley Sarmento

Graduate Student Theses, Dissertations, & Professional Papers

A key goal of protected areas is the conservation of biodiversity, an aim that garners increasing public support through positive experiences. Increasing visitation, however, can come at the cost of reduced ecological integrity. A fundamental conundrum is that if parks are to serve as our most pristine places, then we must understand how our presence alters species interactions. Species redistributing closer to people is of growing management concern both in and out of national parks because of 1) human safety, 2) animal health, and 3) ecological consequences. Across parks drivers of distributional change are often dissimilar, and include movement to …

An Evaluation Of The Effectiveness Of Eukaryotic Dna Extraction From Burial Soil Samples, Ariane Thomas

Graduate Student Theses, Dissertations, & Professional Papers

DNA is a valuable resource as a unique identifier of physical characteristics at both the population and individual levels. Due to a variety of factors that contribute to genetic decay, forensic and bioarchaeological investigators have limited outlets in which to extract viable DNA after most of a body’s organic materials have fully decomposed. This preliminary research focused on extracting DNA from the soil surrounding buried Sus scrofa domesticus cadavers to confirm the presence of viable and analyzable DNA. After a decomposition period of five months in Montana, soils were collected at incremental distances above the remains and sequenced to identify …

Confidence Judgments In A Simultaneous Task Using Sprague Dawley Rats (Rattus Norvegicus), Jessica K. Kumm

Graduate Student Theses, Dissertations, & Professional Papers

In the present experiment, metacognitive confidence judgments were measured in the Sprague-dawley rats using a simultaneous discrimination task. Performance on two types of trials were compared: Forced and Choice. For Forced trials, subjects were required to classify a range of eight tones as either a “long” or “short” tone with the four longest frequency durations comprising the “long” tone category and the four shortest frequency tones comprising the “short” tone duration category. The Choice trials were identical to the Forced trials with the exception that a bailout response was also available, allowing the subject to advance to the next trial …

Extreme Hybrid Growth, Genomic Imprinting, The Large X Effect, And The Drivers Of Speciation In Mammals, Thomas David Brekke

Graduate Student Theses, Dissertations, & Professional Papers

Mammalian hybrids often show abnormal growth, indicating that developmental inviability may play an important role in mammalian speciation. Yet it is unclear if this recurrent phenotype reflects a common genetic basis. Here I describe patterns of hybrid inviability between two closely related species of dwarf hamsters, Phodopus campbelli and P. sungorus. Using genetic crosses, I found extreme parent-of-origin dependent growth in hybrid embryos and placentas. Abnormal growth in hybrid mammals has been empirically linked to genomic imprinting, the parent-specific silencing of a single allele that occurs in many genes involved in regulating embryonic growth. Epigenetic disruptions of genomic imprinting activate …

Empowerment And Subjective And Emotional Well-Being In South Africa, Erik Kappelman

Graduate Student Theses, Dissertations, & Professional Papers

No abstract provided.

Exploring Park Support: A Study Of Philanthropy And Other Support For Yellowstone National Park, Geoffrey G. Havens

Graduate Student Theses, Dissertations, & Professional Papers

Support for charitable causes has long been a topic studied in the hopes of uncovering the reasons for donations and other support behaviors. However, holistic examination of support for places, such as parks, has been relatively untouched as an area of research. One such place where understanding such support is important is Yellowstone National Park, the first designated National Park and one of the most visited parks in the United States. A lack in adequate government funding to meet increasingly heavy visitation has led the park to increasingly rely on outside support for the park.

The purpose of this study …

Mechanisms And Consiqences Of Lysosomal Membrane Permeabilization Following Exposure To Bioactive Particles, Forrest Connell Jessop

Graduate Student Theses, Dissertations, & Professional Papers

Exposure to bioactive environmental particles and engineered nanoparticles are a significant public health concern. Inhalation of bioactive particles can result in chronic inflammation, which drives tissue remodeling and fibrosis. Furthermore, chronic inflammation can increase individual susceptibility to other diseases including cancer and autoimmune diseases. The macrophage is the critical cell in particle clearance following exposure, and is central to the inflammatory responses and tissue remodeling. Phagocytosed bioactive particles within macrophages cause cytotoxicity and activation of the NLRP3 inflammasome, outcomes that are both essential to inflammation and disease development. However, mechanisms that regulate NLRP3 inflammasome activity and cytotoxicity have not fully …

Crossing The Line: Navigating A Polluted Transboundary Watershed, Celia T. Tobin

Graduate Student Theses, Dissertations, & Professional Papers

Montana’s Lake Koocanusa sits at the end of a river system that drains Canada’s most productive coal country. Today, the waters of the massive lake contain a mineral called selenium, a poorly understood byproduct of mine waste. This summer, the U.S. federal government will be in a position to declare that the selenium in the lake puts Canada in violation of its international treaty with the U.S. The Montana government, however, is preparing to argue otherwise through its own water analysis. The disagreement has U.S. ecologists frustrated with the state’s position, saying they won’t practice science that is slave to …

The Sacrificial Ram, Charles Ebbers

Graduate Student Theses, Dissertations, & Professional Papers

Every January and February, Montana and other western states auction tags to hunt big horn sheep, moose, mountain goats, bears and other big game species to the highest bidder, at a series of hunting shows in Nevada. Some states call them “governor’s tags,” while others like Montana call them auction tags.

The purpose of the auctions is to raise funds for state conservation programs meant to keep wildlife populations healthy. In Montana, the funds raised are species specific, meaning that the proceeds from a bighorn sheep tag must be used to help bighorn sheep. Yet, the revenue from these tags …

A Review Of Natural And Engineered Enzymes Involved In Bioethanol Production, Ines Cuesta Urena

Graduate Student Theses, Dissertations, & Professional Papers

Alternative petroleum-derived fuels, such as biofuels, is another form to decrease the dependence of non-renewable energy. The most promising alternative energy is cellulosic ethanol because of the abundance of cellulose and the overall lack of concern for the food-versus-fuel dilemma.

In order to produce ethanol from cellulosic materials, pretreatment is required to “open” the lignocellulosic matrix and make cellulose more susceptible to enzymatic degradation. Enzymatic hydrolysis of lignocellulose is an important area of research due to the absence of negative effects in downstream processes in comparison with acid hydrolysis. Both natural enzymes and engineered enzymes can be used in the …

A Spark That Starts The Fire: Climate Change In The American West, Nathaniel Hegyi

Graduate Student Theses, Dissertations, & Professional Papers

Climate change is a large, unwieldy, global phenomenon that acts like a spark in a dry field. A slight rise in the global temperature weakens the Gulf Stream and sends the East Coast into a deep freeze. A slight dip in the global temperature, caused by a volcanic eruption, alters weather patterns and dumps record amounts of rain in Southeast Asia. The three stories in this portfolio depict how climate change can alter the landscape and people of the American West. Chapter one is a narrative summarizing these stories, my reporting process, and publication plans. Chapter two is an embedded …

The Effects Of Aging On Multiple Postural Muscle Control And Postural Sway Behavior, Adriana Menezes Degani

Graduate Student Theses, Dissertations, & Professional Papers

Episodes of instability and falls in the elderly represent a major public health concern. The lack of scientific information about the effects of age-related changes on neurophysiological mechanisms of postural control has limited the advance in the field of fall prevention and rehabilitation of balance disorders. The overall goal of this dissertation was to investigate the effects of aging on postural control. Considering the progressive non-homogeneous deterioration of aging physiological systems, a series of five experimental studies, with healthy young and healthy nonfaller older adults performing upright stance tasks, explored three main hypotheses: (1) intermuscular coherence analysis is able to …

Impacts Of Recreational Aviation On Wildlife: The Physiological Stress Response In White-Tailed Deer (Odocoileus Virginianus) And Associated User Perceptions, Devin W. Landry

Graduate Student Theses, Dissertations, & Professional Papers

Recreational aviation on public lands may negatively impact wildlife. However, land-use decisions need to balance user need with wildlife impact. We know very little about 1) how back country airstrip use affects local wildlife, or 2) attitudes and perceptions of recreational pilots toward possible management actions. For my Master’s research, I investigated how aircraft activity influenced physiological measures of stress in white-tailed deer, while also modeling how psychometrics such as wildlife attitudes and place attachment predict the willingness of recreational pilots engage in impact-mitigating behaviors. I measured physiological stress through non-invasive sampling of stress hormones in fecal samples (fecal glucocorticoid …

On The Road To Better Health? Impacts Of New Market Access On Food Security, Nutrition, And Well-Being In Nepal, Himalaya, Michelle Ursula Grocke

Graduate Student Theses, Dissertations, & Professional Papers

The first road to be built into Humla, Nepal has connected this once-remote Himalayan region to a market in China. This dissertation research assesses the impacts of this road on villagers’ food security, diet and nutrition, and subjective well-being, and investigates the link between objective and subjective health outcomes. The primary aim of this study is to decipher whether villagers’ ‘proximity to road’ is the strongest predictor of the aforementioned health outcomes, or whether other sociocultural and economic variables play a more significant role. A mixedmethods approach and a case-control ethnographic research design were implemented in order to investigate this …

Predicting Climate-Induced Impacts On Seasonal Stream Temperatures In The Crown Of The Continent Ecosystem, Leslie Anne Jones

Graduate Student Theses, Dissertations, & Professional Papers

Changes in seasonal climate patterns are altering thermal distributions of freshwater ecosystems worldwide. The Crown of the Continent Ecosystem is one of the most biologically diverse ecosystems in North America, spanning northwestern Montana, USA, Alberta and British Columbia, Canada. The fluvial landscape consists of pristine freshwater habitats that provide strongholds for many aquatic species. My dissertation work provides the first broad scale analysis of seasonal climate effects on spatiotemporal patterns of stream temperature in the Crown of the Continent, and a multi-scalar analysis of potential impacts to bull trout (Salvelinius confluentus) populations, the most stenothermic cold-water fish in the northern …

Knife River Flint Distribution And Identification In Montana, Laura Evilsizer

Graduate Student Theses, Dissertations, & Professional Papers

An examination of the spatial, temporal, and functional distribution of Knife River flint in Montana, and a study in misidentification of Knife River flint in archaeological assemblages. Lithic sourcing has the potential to provide a plethora of information to archaeologists: resource procurement strategies, mobility patterns, trade networks, and the preferencing of particular lithic material types. However, without proper identification it is impossible to study the distribution of lithic materials from their source. Knife River flint, a brown chalcedony, is a particularly fascinating material, geologically occurring in a small area, but culturally distributed over a large area. I analyze the distribution …

Wingspan: Living With Birds, Lauren A. Smith

Graduate Student Theses, Dissertations, & Professional Papers

Wingspan: Living with Birds is a collection of creative nonfiction essays that intertwine the author’s personal experiences and reflections with her knowledge of the natural world and ornithology. The six essays explore themes of family, self-reflection, understanding a sense of place, rock climbing, and dealing with grief. These themes are combined with natural histories of different bird species and the author’s experiences working with birds, especially as a bird bander.

Wellspring, Alicia Bones

Graduate Student Theses, Dissertations, & Professional Papers

No abstract provided.

Before The Wind, Charles R. Decker

Graduate Student Theses, Dissertations, & Professional Papers

No abstract provided.

From A Poetry Handbook For Mining Engineers, Jolene M. Brink Mrs

Graduate Student Theses, Dissertations, & Professional Papers

This poetry collection utilizes A.G. Charleton’s Report Book for Mining Engineers (Whitehead, Morris & Co, 1908). The original 200-page report book contains questions and blank entries for the engineer to collect information for mine owners planning to sell or acquire property. The poems in from A Poetry Handbook for Mining Engineers use the artifact of this handbook—and the unanswered questions in the found text—to interrogate historic language surrounding mining and excavation, as well as material accumulation, alchemical practices, and the tradition of mining in northern Minnesota and the Norwegian village of Røros.

Toward An Ontology Of Exhaustion: On The Affective Structures Of Masculinity In The American Oilfield, John W. Jepsen

Graduate Student Theses, Dissertations, & Professional Papers

What is the significance of the oil encounter in the lives of men living and working in the modern oilfields of the United States? Engaging with both literary examples of the lives of men in the Interior West and the personal experiences and reflections of the author, this essay seeks to examine the connections between ideology and place as it works to shape the identity and affect of men in America's oilfields, ultimately ending in them identifying with the very resources their activities seek to exploit and exhaust. Utilizing Theodore Adorno's Minima Moralia as its moral touchstone, this essay works …

Farm-To-School In Montana: An Assessment Of Program Participation, Autumn Lee

Graduate Student Theses, Dissertations, & Professional Papers

Montana is a prominent player in the farm-to-school movement with its strong agricultural industry and its leadership in the farm-to-school FoodCorps program. Farm-to- school involves connecting students to food through local procurement, nutrition education, and garden immersion. Many researchers indicate that farm-to-school participation strengthens local economies, improves student health, and creates more cohesive communities, but the financial and logistical challenges of implementation signal the call for stronger policy and funding support. In this professional paper, I build upon previous research to understand the unique outcomes of farm-to-school participation in Montana and to explore the policy and funding needs specific to …

Abundance, Density, And Opinions About Columbian Black-Tailed Deer, Whidbey Island, Washington, Robert P. Wingard

Graduate Student Theses, Dissertations, & Professional Papers

Obtaining reliable knowledge is the first step towards properly managing wildlife species. Columbian black-tailed deer (Odocoileus hemionus columbianus) on Whidbey Island, Washington have not been the subject of study, and little is known about the population, or the opinion of resident’s of Whidbey Island towards the deer population. However, wildlife managers suggest deer on the island may be overabundant or over social carrying capacity. Given the lack of empirical knowledge about the deer population or human opinions towards deer on Whidbey Island, I designed research to determine the abundance and density of Columbian black-tailed deer on Whidbey Island, …

A 'Paradox Of Expression': Bertolt Brecht's Verfremdungseffekt In Performance, Cohen L. Ambrose Mr.

Graduate Student Theses, Dissertations, & Professional Papers

No abstract provided.