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Articles 3481 - 3510 of 11634
Full-Text Articles in Entire DC Network
The Ecology Of Tick-Borne Relapsing Fever In Western North America, Tammi Lynne Johnson
The Ecology Of Tick-Borne Relapsing Fever In Western North America, Tammi Lynne Johnson
Graduate Student Theses, Dissertations, & Professional Papers
In North America the primary cause of tick-borne relapsing fever (TBRF) is the spirochete Borrelia hermsii that is vectored by the tick Ornithodoros hermsi. Ecological investigations were combined with mathematical modeling and genetics to gain a clearer understanding of the interactions and mechanisms responsible for disease maintenance, distribution, and genetic diversity. The objectives of this research were to: 1) identify mammals associated with B. hermsii and O. hermsi by determining active infection and antibody presence, 2) develop a deterministic model to ascertain ecological and epidemiological parameters essential for disease persistence, 3) resolve the phylogeographic structure of B. hermsii and …
The Effect Of Spillover Onto Ionotropic Glutamate Receptors At The Schaffer-Ca1 Synapse In Hippocampal Slice, Katie Marie Hoffman
The Effect Of Spillover Onto Ionotropic Glutamate Receptors At The Schaffer-Ca1 Synapse In Hippocampal Slice, Katie Marie Hoffman
Graduate Student Theses, Dissertations, & Professional Papers
Glutamate is the major excitatory neurotransmitter in the brain and is crucial for processes such as learning and memory. Due its importance as a signaling molecule, the extracellular glutamate concentration is tightly regulated, largely by the excitatory amino-acid transporters (EAATs). In these studies, we investigated the role of EAAT1-3 in synaptic transmission at the Schaffer-CA1 synapse in acute hippocampal brain slices. My results demonstrated that transport block by L-TBA resulted in glutamate spillover and activation of NMDARs. Further investigation showed that L-TBA-mediated activation of NMDARs was facilitated by the Mg2+ unblock of the receptor. Furthermore our data indicate that NMDAR …
Aufarbeitung Der Vergangenheit Through The Medium Of Myth In Heinrich Böll's Short Stories Der Mann Mit Den Messern And Nicht Nur Zur Weihnachtszeit, Marcus James Cardarelli
Aufarbeitung Der Vergangenheit Through The Medium Of Myth In Heinrich Böll's Short Stories Der Mann Mit Den Messern And Nicht Nur Zur Weihnachtszeit, Marcus James Cardarelli
Graduate Student Theses, Dissertations, & Professional Papers
German history of the 20th century was marked with unimaginable horrors and hardship. Both the First and Second World Wars left an indelible mark on the German psyche. Most specifically, the consequences of the Second World War were a turning point in German notions of cultural identity. The objective of this thesis is to analyze the various manners by which Heinrich Böll deals with the emerging cultural crisis in the post-war period of the late 1940’s and early 1950’s. I have chosen two of his short stories, Der Mann mit den Messern (1948) and Nicht nur zur Weihnachtszeit (1951), for …
Amur Tiger Predation And Energetic Requirements In The Russian Far East: New Insights From Global Positioning System Collars, Clayton Steele Miller
Amur Tiger Predation And Energetic Requirements In The Russian Far East: New Insights From Global Positioning System Collars, Clayton Steele Miller
Graduate Student Theses, Dissertations, & Professional Papers
The IUCN Red List has classified all subspecies of tigers (Panthera tigris) as endangered with prey depletion being widely recognized as one of the primary drivers of tiger declines. Due to substantial energetic requirements, tigers can only survive and reproduce in areas with healthy prey populations. This may be particularly important for Amur tigers (P. t. altaica) in the Russian Far East, living at the northern limits and with the lowest prey densities of any tiger population. Few studies have been able to rigorously investigate annual prey requirements for any tiger population. We deployed Global Positioning System (GPS) collars on …
An Inquiry Into Eco-Labeling: The Promise Of Predator Friendly Certification (Pfc), Melissa Ellen Katherine Early
An Inquiry Into Eco-Labeling: The Promise Of Predator Friendly Certification (Pfc), Melissa Ellen Katherine Early
Graduate Student Theses, Dissertations, & Professional Papers
Agricultural landscapes play key roles in preserving biodiversity through habitat protection while providing ecosystem services necessary for rural livelihoods. There is a small, but growing movement among agricultural producers to live with nature rather than to dominate nature. Within this larger agriculture movement are efforts to live with predators rather than eliminating them through lethal means. This is reflective of the changing conversation around predators in the New West. Means of co-existence include livestock guardian animals, electric fencing, fladry, range rider patrols, rotational grazing, and lights etc. One grassroots effort in this area is Predator Friendly Certification (PFC). PFC is …
Core Selection By Wolf Packs In A Human-Dominated Landscape: A Case Study In The Mountains Of Southern Poland, Nathan Alan Owens
Core Selection By Wolf Packs In A Human-Dominated Landscape: A Case Study In The Mountains Of Southern Poland, Nathan Alan Owens
Graduate Student Theses, Dissertations, & Professional Papers
The wolf populations in Europe are mostly divided between the largely undeveloped countries of Eastern Europe, and the more developed Western European nations. Poland holds a special importance as a geographical link joining these populations into one contiguous population. The territories of two wolf packs in southwestern Poland were examined through the collection of scat data. Core areas were then defined using fixed-kernel density estimation techniques and 50% isopleths. Habitat variables were then compared between core plots and non-core plots. Scat marking of both packs resembled the Hot Spots pattern of marking proposed by Zub et al. (2003), rather than …
Montana Business Quarterly, Winter 2012, University Of Montana--Missoula. Bureau Of Business And Economic Research
Montana Business Quarterly, Winter 2012, University Of Montana--Missoula. Bureau Of Business And Economic Research
Montana Business Quarterly, 1949-2021
This is an academic publication produced by the Bureau of Business and Economic Research (BBER) at the University of Montana’s College of Business. This is volume 50, number 4.
The Changing Role Of Sámi Women In Reindeer Herding Communities In Northern Norway And The 1970-1980s Women’S Resistance And Redefinition Movement, Marcie Kaye Bremmer
The Changing Role Of Sámi Women In Reindeer Herding Communities In Northern Norway And The 1970-1980s Women’S Resistance And Redefinition Movement, Marcie Kaye Bremmer
Graduate Student Theses, Dissertations, & Professional Papers
Historically, different nations-states at different times have tried to claim authority over the Sámi in the circumpolar north. After the nation state borders were drawn in the 1700s and 1800s, separating Russia, Norway, Sweden and Finland, Norway introduced a harsh and 1800s separating Russia, Norway, Sweden and Finland, Norway introduced a harsh assimilation policy that lasted over a century. Cultural Darwinist views and national assimilationist legislation and social strategies chipped away at Sámi society and its identity as an indigenous people. Over time Sámi women found their accustomed social, economic, and political autonomy eroded. Post World War II, the emerging …
Phl 112e.00: Introduction To Ethics And The Environment, Christopher J. Preston
Phl 112e.00: Introduction To Ethics And The Environment, Christopher J. Preston
University of Montana Course Syllabi
No abstract provided.
Ecological Causes Of Life History Variation Tested By Meta-Analysis, Comparison, And Experimental Approaches, Daniel Croft Barton
Ecological Causes Of Life History Variation Tested By Meta-Analysis, Comparison, And Experimental Approaches, Daniel Croft Barton
Graduate Student Theses, Dissertations, & Professional Papers
The ecological causes of life history variation among taxa and the arrangement of such variation along geographic gradients is enigmatic despite the proximity of life history traits to fitness and implications for understanding basic and applied population ecology. One classic explanation for the arrangement of avian life histories along a `slow-fast' gradient, where species at low latitudes have `slow' life history traits (low fecundity and mortality) and species at high latitudes have `fast' life history traits (high fecundity and mortality), is the increase in seasonality of resources with increasing latitude (Ashmole's hypothesis). Despite broad acceptance, this hypothesis has been supported …
The Whale And The World In Melville’S Moby-Dick: Early American Empire And Globalization, Zachary Michael Radford
The Whale And The World In Melville’S Moby-Dick: Early American Empire And Globalization, Zachary Michael Radford
Graduate Student Theses, Dissertations, & Professional Papers
Reading Moby-Dick; or, the Whale (1851), this study examines literary arguments regarding Melville’s capacity to appear prophetic through his written works in his predictions of the vast empire that America would one day become and the strategies which the country would employ to do so. In my introduction I assert that Melville is not a “Prophet,” but rather, he is a keenly analytical observer of the world around him as he recognized in America patterns of imperialism: structures he charted in his global voyages as a merchant and then a whaler. In his observations, he saw that America was not …
A Tribute To Judge James R. Browning, Montana School Of Law
A Tribute To Judge James R. Browning, Montana School Of Law
Montana Law Review
A Tribute to Judge James R. Browning
Biomass And Burning Characteristics Of Sugar Pine Cones, Anton T. Gabrielson, Andrew J. Larson, James A. Lutz, James J. Reardon
Biomass And Burning Characteristics Of Sugar Pine Cones, Anton T. Gabrielson, Andrew J. Larson, James A. Lutz, James J. Reardon
Forest Management Faculty Publications
We investigated the physical and burning characteristics of sugar pine (Pinus lambertiana Douglas) cones and their contribution to woody surface fuel loadings. Field sampling was conducted at the Yosemite Forest Dynamics Plot (YFDP), a 25.6 ha mapped study plot in Yosemite National Park, California, USA. We developed a classification system to describe sugar pine cones of different sizes and decay conditions, and examined differences among cone classes in biomass, bulk density, flame length, burning time, consumption, and relative contribution to surface fuel loads. Sugar pine cones comprised 601 kg ha-1 of surface fuels. Mature cones comprised 54% of …
Early-Stage Thinning For The Restoration Of Young Redwood--Douglas-Fir Forests In Northern Coastal California, Usa, Jesse F. Plummer, Christopher R. Keyes, J. Morgan Varner
Early-Stage Thinning For The Restoration Of Young Redwood--Douglas-Fir Forests In Northern Coastal California, Usa, Jesse F. Plummer, Christopher R. Keyes, J. Morgan Varner
Forest Management Faculty Publications
Among forested parks and reserves of the Pacific Coast of the United States, the restoration of late-successional conditions to second-growth stands is a management priority. Some traditional silvicultural treatments may help achieve this objective. We evaluated early-stage thinning as a restoration treatment to facilitate the growth and development of young (33- to 45-year old), homogeneous, and second-growth stands of coast redwood (Sequoia sempervirens) and Douglas-fir (Pseudotsuga menziesii). Targeting both stand-level responses and dominant (focal) tree responses for analysis, we compared structural attributes of adjacent thinned and unthinned stands, 12–17 years after thinning. Thinned stands displayed enhanced metrics of tree vigor, …
The Effect Of Fire On Spatial Separation Between Wolves And Caribou, Hugh S. Robinson, Mark Hebblewhite, Nicholas J. Decesare, Jessie Whittington, Layla Neufeld, Mark Bradley, Marco Musiani
The Effect Of Fire On Spatial Separation Between Wolves And Caribou, Hugh S. Robinson, Mark Hebblewhite, Nicholas J. Decesare, Jessie Whittington, Layla Neufeld, Mark Bradley, Marco Musiani
Biological Sciences Faculty Publications
Fire management is an important conservation tool in Canada’s national parks. Fires can benefit some species, while others may be negatively impacted. We used GPS and VHF collar data for 47 wolves from 12 separate packs and 153 caribou from 5 separate herds, and resource selection analysis to model the effects of fire on these species’ habitat and potential interactions. Resource selection modeling showed that wolves select for burned areas and areas close to burns, presumably due to the presence of primary prey (i.e., elk and moose), while caribou avoid burns. Fire reduced the amount of high quality caribou habitat …
Examination Of Scavenging Associated With Wolves, Jamie Bankaitis
Examination Of Scavenging Associated With Wolves, Jamie Bankaitis
Graduate Student Theses, Dissertations, & Professional Papers
Forensic anthropologists often confront external influences on a body, whether they are human, animal, or environmental. One of the major and most common confounding factors for forensic anthropologists is animal scavenging and the damage this inflicts on the skeleton. The types of scavengers present vary from region to region, and in the Northwest, large carnivores such as bears, mountain lions, and canids are abundant. These types of carnivores can not only inflict incredible trauma to a skeleton, they can also disperse the remains over very large areas, making it difficult for forensic teams to recover all of the skeletal elements …
Language Change In Spanish Heritage Speakers: The Interaction Between Lexical And Grammatical Aspect, Jackelyn Kelly Van Buren
Language Change In Spanish Heritage Speakers: The Interaction Between Lexical And Grammatical Aspect, Jackelyn Kelly Van Buren
Graduate Student Theses, Dissertations, & Professional Papers
This thesis focuses on preterit and imperfect usage in the Spanish of Chilean-American heritage speakers. Spanish heritage speakers in the United States are second generation bilinguals who learn Spanish in the home from Spanish speaking parents and learn English from school and the community (Montrul 2002; Rothman 2007). When societal factors limit heritage language exposure, tense and aspect morphology is susceptible to change (Guijarro-Fuentes & Clibbens 2004). Findings of a study on 11 Chilean-American heritage speakers show that production of the preterit is overextending, resulting in less frequent use of the imperfect. Large-scale studies of US Spanish-English bilinguals’ use of …
Restoring The "Shining Waters": Milltown, Montana And The History Of Superfund Implementation, David James Brooks
Restoring The "Shining Waters": Milltown, Montana And The History Of Superfund Implementation, David James Brooks
Graduate Student Theses, Dissertations, & Professional Papers
This dissertation is a case study of a dam removal and river restoration within the nation's largest Superfund site. In 1981, the U.S. Environmental Protection Agency included Milltown Reservoir on its first list of Superfund sites. Superfund law capped two decades of the federal government's most aggressive environmental legislation. While tracking the national story of Superfund law, my story provides a local view of how individuals, organizations, and agencies shaped the Superfund process. After the EPA designated Milltown a national Superfund site, the environment itself, persistent work within the channels of public policy, and federally-mediated compromise helped restore some shine …
Sarah Palin, Conservative Feminism, And The Politics Of Family, Jasmine Rose Zink
Sarah Palin, Conservative Feminism, And The Politics Of Family, Jasmine Rose Zink
Graduate Student Theses, Dissertations, & Professional Papers
Female politicians are heavily constrained by discourses that prescribe masculine values as natural, yet at times they draw on societal expectations of femininity that allow them to utilize such discourses to their advantage. Motherhood, a feminine yet powerful role, provides such an opportunity. Capitalizing on this acceptable avenue of female power, women have strategically relied on maternal appeals since they first entered public life, often to challenge patriarchal social structures. Utilizing Lakoff‘s (2002) concept of the nation-as-family metaphor and informed by the pervasive myth of the traditional family, this analysis explores the consequences of Sarah Palin‘s use of maternal appeals …
Subjective Quality Of Life In Dialysis Patients, Cindy Schaumberg
Subjective Quality Of Life In Dialysis Patients, Cindy Schaumberg
Graduate Student Theses, Dissertations, & Professional Papers
With the ever increasing ability of medical technology to prolong life, quality of life is an increasingly legitimate medical outcome. This is an ethnographic study on the perceived quality of life of hemodialysis dependent end stage renal disease patients. The study used participant observations and in-depth patient interviews to elicit the perspective of hemodialysis dependent end stage renal disease patients. Findings addressed the utility of dialysis for patients of, patient values leading to renal replacement therapy, and issues that might make patients perceive treatment as futile.
The Importance Of Water-Based Ecosystem Services Derived From The Shoshone National Forest, Christopher Aden Armatas
The Importance Of Water-Based Ecosystem Services Derived From The Shoshone National Forest, Christopher Aden Armatas
Graduate Student Theses, Dissertations, & Professional Papers
There is a wide range of goods and services being provided to humans by water resources (e.g. hydropower and recreation), but there is also a diversity of stakeholders that require or desire these benefits, also known as water-based ecosystem services, for everyday life. Land managers working for the United States Department of Agriculture Forest Service in the semi-arid Rocky Mountain Region are tasked with the difficult job of managing scarce water resources in the face of competing human pressures and natural forces (e.g. climate change). Water management decisions on public lands can potentially impact the availability of a wide range …
Studies Directed To The Development Of Long Lived Palladium Membranes For Hydrogen Purification, William Glenn Pinson
Studies Directed To The Development Of Long Lived Palladium Membranes For Hydrogen Purification, William Glenn Pinson
Graduate Student Theses, Dissertations, & Professional Papers
The focus of this study was to systematically investigate the variables involved in electroless deposition of palladium and palladium alloy membranes on a known porous stainless steel substrate, and apply the results to a new and novel porous stainless steel substrate. Different oxide pore and surface treatments were studied. The effect of silica as a diffusion barrier, surface pore modifier, and palladium nucleation site was examined. Silica sol-gel coating treated stainless steel substrates were explored. Several different formulas of sol-gel coatings and their impact on palladium and palladium copper deposition were researched. The roles of sintering and annealing and their …
What Predicts Terrestrial Invertebrate Subsidy Use By Brook Trout (Salvelinus Fontinalis) In Headwater Streams?, Matthew Kestrel Wilson
What Predicts Terrestrial Invertebrate Subsidy Use By Brook Trout (Salvelinus Fontinalis) In Headwater Streams?, Matthew Kestrel Wilson
Graduate Student Theses, Dissertations, & Professional Papers
Spatial subsidies provide critical resources for organisms in receiving habitats, particularly when production in those habitats is low. While it is clear that terrestrial invertebrates provide a critical subsidy for trout, including eastern brook trout (Salvelinus fontinalis), we have limited understanding of what causes input and use of these subsidies to vary among streams. Among the watershed characteristics that may influence input and use of terrestrial invertebrates, I predicted that forest succession stage would be especially important due to differences in terrestrial invertebrate biomass in early and late successional habitats. To test this prediction, I measured terrestrial invertebrate biomass, input …
Wilderness, A Spiritual Antidote To The Everyday: A Phenomenology Of Spiritual Experiences In The Boundary Waters Canoe Area Wilderness, Ian Foster
Graduate Student Theses, Dissertations, & Professional Papers
The purpose of this study was to explore, describe, and explain the phenomena of spiritual experiences in wilderness. The motivations for the research included: growing interest in empirical studies on the relationship between spirituality and human health, increasing concern over human’s loss of spiritual relationships with nature, and personal curiosity about the wild and spiritual nature of wilderness experiences. Research was focused on overnight visitors traveling by canoe in the Boundary Waters Canoe Area Wilderness of northeastern Minnesota. Data from thirty-two semi-structured interviews was used to question, update, and improve understanding of the phenomena. Phenomenological interviews (interviews that situate comments …
Regulation Or Litigation: Using The American Legal System To Address Climate Change, Stacy Lynne Boman
Regulation Or Litigation: Using The American Legal System To Address Climate Change, Stacy Lynne Boman
Graduate Student Theses, Dissertations, & Professional Papers
While a growing scientific consensus recognizes that anthropogenic greenhouse gas emissions are contributing to the global phenomenon known as climate change, little progress has been made to pass comprehensive legislation addressing climate change. Many concerned with the effects of climate change have turned to the American court system as a means of addressing climate change or reducing greenhouse gases. Similar to the early litigation history of many environmental cases, climate change litigation has thus far been unsuccessful in holding major greenhouse gas emitters liable for the impacts of climate change. Plaintiffs have not given up, however. Many climate change cases …
It Took Me Years To Get Those Souvenirs/ Fragments Of A Fiction, Sarahjess Hurt
It Took Me Years To Get Those Souvenirs/ Fragments Of A Fiction, Sarahjess Hurt
Graduate Student Theses, Dissertations, & Professional Papers
Hurt, Sarahjess, M.F.A., Summer 2012 Fine Arts Fragments of a Fiction Thesis Chair: Trey Hill Fragments of a Fiction is an examination of the differences between memory and experience. Through an exploration of both cultural and cognitive shifts I examine how societies, and more specifically, consumers, choose to remember some incidences and forget others. What tools do human beings use to promote some memories and deny others? This inquiry led me to question my own habits of memory, as well as those of others who have shared their stories. In my process, I try to understand the interplay between fact …
Consequences Of Aryl Hydrocarbon Receptor Activation In Crohn's Disease, Jenna Marie Benson
Consequences Of Aryl Hydrocarbon Receptor Activation In Crohn's Disease, Jenna Marie Benson
Graduate Student Theses, Dissertations, & Professional Papers
Activation of the aryl hydrocarbon (AhR), a ligand-activated transcription factor present in many immune cells, can trigger immunosuppressive responses through the generation of regulatory cells. Several AhR ligands exist in the diet including environmental contaminants, such as its prototypical ligand 2,3,7,8-tetrachlorodibenzo-pdioxin (TCDD), and natural sources, such as indole-3-carbinol (I3C) and indirubin. Crohn's disease, a chronic inflammatory state of the gastrointestinal tract, affects millions worldwide; however, the exact cause is unknown and treatments do not cure the disease. The role of the AhR in mucosal immune responses is not well understood to date so we aimed to understand the consequences of …
Genetic Structure And Disease Prevalence Of Boreal Toads (Bufo Boreas) In Glacier National Park, Brett Rebekah Addis
Genetic Structure And Disease Prevalence Of Boreal Toads (Bufo Boreas) In Glacier National Park, Brett Rebekah Addis
Graduate Student Theses, Dissertations, & Professional Papers
Amphibians are more threatened than any other vertebrate group, with 41% of species experiencing declines. The causes of most declines are not well understood, though many declines have been linked to the emerging infectious disease chytridiomycosis. Additionally, amphibians are physiologically constrained to moist habitats and considered poor dispersers; thus, they may suffer genetic consequences of population isolation. To address threats to the persistence of boreal toads (Bufo boreas) in Glacier National Park, USA, I genotyped 551 individuals at 11 microsatellite loci and used spatially independent (STRUCTURE) and spatially explicit (GENELAND) Bayesian methods to describe population genetic structure and identify barriers …
Mapping A Historic Bitterroot Valley, Montana Landscape Using General Land Office Surveyors' Field Notes, Karen M. Shelly
Mapping A Historic Bitterroot Valley, Montana Landscape Using General Land Office Surveyors' Field Notes, Karen M. Shelly
Graduate Student Theses, Dissertations, & Professional Papers
The late 1800s Bitterroot Valley, Montana, landscape and settlement patterns were summarized and mapped using the General Land Office (GLO) surveyors' field notes. Surveyors' observations of six townships from Hamilton to the Stevensville vicinity were examined in several ways. A total of 3321 points of ecological and geographic information and 422 miles of vegetation were mapped from the field notes. Surveyor information, vegetation composition, tree abundance, vegetation spatial structure and distribution of vegetation types were characterized in a multi-part historic vegetation data assemblage of point, line and polygon feature classes. Aquatic, topographic and cultural aspects of the area contributed to …
Mountain Pine Beetle Outbreaks In High Elevation Whitebark Pine Forests: The Effects Of Tree Host Species And Blister Rust Infection Severity On Beetle Productivity, Edith Mary Dooley
Mountain Pine Beetle Outbreaks In High Elevation Whitebark Pine Forests: The Effects Of Tree Host Species And Blister Rust Infection Severity On Beetle Productivity, Edith Mary Dooley
Graduate Student Theses, Dissertations, & Professional Papers
In recent years, the mountain pine beetle (MPB, Dendroctonus ponderosae) has caused dramatic levels of mortality of whitebark pine (Pinus albicaulis). This keystone and foundation tree species is also being killed by the exotic fungus, Cronartium ribicola, which causes the disease white pine blister rust (WPBR). This study examines MPB productivity in whitebark pine compared to that in lodgepole pine, and also in whitebark pine of varying WPBR infection severities to determine if either of these host factors contributes to the current, dramatic MPB outbreaks in whitebark pine. To evaluate host tree effects on MPB, I tracked attack densities, emergence …