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Discerning The Diets Of Sweep-Feeding Eurypterids Through Analyses Of Mesh-Modified Appendage Armature, Emily Samantha Hughes

Graduate Theses, Dissertations, and Problem Reports (ETD)

Eurypterids were a group of aquatic chelicerates that lived throughout most of the Paleozoic. While swimming eurypterids are generally considered to be active predators, the benthic stylonurine eurypterids appear to have had a mode of life similar to modern horseshoe crabs with the exception of two clades, the Stylonuroidea and the Mycteropoidea, both of which independently evolved modifications for sweep-feeding on their anterior appendages. Among extant suspension feeders, it has been shown that there is a linear correlation between the average spacing of feeding structures and prey sizes. This relationship was extrapolated to the sweep-feeding stylonuroid and mycteropoid eurypterids in …

Sediment Provenance Study Of The Lower Hamilton Group: An Analysis Of The Organic-Rich Facies And Its Depositional History, Luke Patrick Fritz

Graduate Theses, Dissertations, and Problem Reports (ETD)

Currently, insufficient geological models exist to explain the variability and distribution of TOC in the Marcellus Shale, within the Hamilton Group. TOC is one of the several limiting factors for natural gas production within the Marcellus Shale basin. One possible explanation for the low TOC regions is that detrital dilution was variable across the basin, with different sediment sources contributing detritus to low TOC areas, compared to surrounding regions with higher TOC. This hypothesis is tested by analyzing the source composition of inorganic detritus, using elemental and mineralogical proxies, with two cores in the Hamilton Group. The Armstrong #1 core …

Impacts Of Climate Change On Water Balance Components In The Central Appalachian Mountains, Usa, Brandi Anne Gaertner

Graduate Theses, Dissertations, and Problem Reports (ETD)

This research investigated the impact of climate and land cover on water balance components including evapotranspiration and runoff in the mountainous central Appalachian region of the United States. The first studyanalyzed trends in climatologic, hydrologic, and growing season length variables, identified the important variables effecting growing season length changes, and evaluated the influence of a lengthened growing season on increasing evapotranspiration trends. The results showed that growing season length has increased, on average, by ~22 days and evapotranspiration has increased ~12 mm. The second study quantified long-term historical and future climate trends, evaluated water balance sensitivity to change, and quantified …

Ground Ingredients: Analysis Of Lead Exposure In The California Condor’S (Gymnogyps Californianus) Ground Foraging Habitat, Evan Michael Mcwreath

Graduate Theses, Dissertations, and Problem Reports (ETD)

The California Condor (Gymnogyps californianus) is a critically endangered species that reached its nadir in 1987 with a population of 27 birds in the wild. Intensive management efforts have been implemented to aid the condors’ recovery, however, anthropogenic factors, like use of lead ammunition, continue to cause fatalities in this vulnerable population. Lead toxicosis, which is responsible for approximately 40% of all condor deaths since 1992, is one of the most significant threats to condors. In birds lead poisoning leads to neurological dysfunction, reproductive impairment, immune suppression, gastrointestinal disturbance, anemia, and ultimately increased vulnerability to predation, starvation, and infection. For …

Promoting Sense Of Belonging And Interest In Geosciences Among Undergraduate Women Through Mentoring, Wenyi Du

Graduate Theses, Dissertations, and Problem Reports (ETD)

The purpose of this study is to investigate whether students’ university sense of belonging mediates the relationship between mentor network diversity and students’ interest development among undergraduate women in STEM majors. The sample for this study was consisted of 277 undergraduate women majoring in a STEM discipline with initial interests in geosciences across nine universities within the United States. A regression-based mediation analysis was performed using the Hayes’ (2013) macro to test the indirect effect of mentor support on interest through university sense of belonging. Consistent with our hypothesis, the analysis revealed a statistically significant and positive indirect effect of …

Death-Defying Morphologies: Mass Extinction And Disparity In The Order Harpetida, James Desmond Beech

Graduate Theses, Dissertations, and Problem Reports (ETD)

The trilobite order Harpetida has long been easily recognized but poorly understood. This study seeks to better understand the phylogenetic relationships within Harpetida, with a view towards using this group to explore the relationship between extinction intensity and disparity. The harpetid response to the Late Ordovician mass extinction is of particular interest. A discrete morphological character matrix was created from the formal descriptions of harpetids in the published trilobite literature, and refined using first-hand observations of harpetid fossils. The final matrix consists of 76 discrete characters, including 69 cephalic characters, three thoracic characters, and four pygidial characters. This matrix is …

Beneath The Gypsum Dunes: Cenozoic History Of Wind And Water From A Core Drilled At White Sands, New Mexico, Jackson Bentley Jakeway

Graduate Theses, Dissertations, and Problem Reports (ETD)

White Sands, New Mexico is the largest gypsum dune field on planet Earth, the result of reworking of gypsum deposits. The dunes have been well studied, but the Cenozoic history preceding the formation of the dune field has been poorly studied. A core drilled to a depth of 192 ft (58.5 m) beneath the modern dune field contains deposits from saline lakes, sandflats, perennial freshwater lakes, perennial brackish to saline lakes, and saline mudflats.

The core is composed of bottom-growth bedded gypsum, gypsum sandstone and siltstone, mixed siliciclastic-gypsum sandstones and siltstones, laminated siliciclastic mudstones, gypsum mudstones, and carbonate mudstones. Bottom-growth …

Association Genetics And Local Adaptation Of Populus Trichocarpa Torr. & Gray, Hari Bahadur Chhetri

Graduate Theses, Dissertations, and Problem Reports (ETD)

A major goal in plant science is overcoming the recalcitrance of plant biomass to cellulose extraction, to enable efficient production of cellulosic biofuel. We have started to understand the genetic basis of some important traits such as cell wall chemistry, but we do not know anything about the key structural and functional traits such as wood anatomy that greatly affect plant biomass recalcitrance. Furthermore, biofuel feedstocks have to be adapted to varied environmental conditions to ensure high productivity in plantations, but little is known about the molecular mechanisms underlying local adaptation. With the advancement in sequencing and genotyping technologies, association …

Three Essays On Utilizing Spatial Econometrics In Natural Resource Economics Related To Water, Health, And Energy, Elham Erfanian

Graduate Theses, Dissertations, and Problem Reports (ETD)

Spatial interaction and the locational structure between observations have recently gained more attention in the field of econometrics for both cross-sectional and panel data analyses. Compared to a non-spatial economic model, a spatial model relaxes the assumption of independency in observations. This research will apply spatial econometrics modeling in three different fields in applied economics: 1) water charge and minimum monthly access charge in West Virginia municipalities, 2) Naloxone access law and opioid overdose deaths among the U.S. states, and 3) ��2.5 concentrations and asthma hospitalizations in Pennsylvania counties. Based on the nature of water resource imposing spillovers in water …

Petrophysical And Geomechanical Characterization Of The Marcellus Shale In The Appalachian Basin, Yixuan Zhu

Graduate Theses, Dissertations, and Problem Reports (ETD)

In recent years, more and more attention is paid to shale gas and hydrocarbon liquids exploration and exploitation in unconventional reservoirs. With the development of horizontal drilling and hydraulic fracturing, production from unconventional reservoirs has been greatly increased. However, not all wells, regions and basins harbor highly successful shale gas and liquids producers. In order to improve the production efficiency and reduce the cost of projects, detailed analysis needs to be undertaken to characterize the reservoir. As opposed to conventional reservoirs, extraction of gas in the unconventional reservoir is dependent not only on the reservoir quality, but also on completion …

Using The Enrichment Triad Model To Explore Place And Support Curriculum In One Rural Gifted Program, Myriah Mae Miller

Graduate Theses, Dissertations, and Problem Reports (ETD)

Using narrative inquiry, this case study explored how one teacher, who had deep connections to place, learned and utilized the place-based Enrichment Triad in her rural Appalachian elementary gifted program. Data collected included teacher, student, and parent interviews and classroom observations. Data were analyzed using a socio-cultural narrative analysis and narrative thematic analysis. Results from analysis created thick descriptions of the teacher’s journey to teaching, her existing practices, her experiences learning and implementing the framework, and her future curricular intentions. Developments in the teacher’s practice included establishment of scope and sequence, a sharing of power, and embracing students’ identities through …

A Deep Dive Into The Land Development Dynamics Of A Complex Landscape, Pariya Pourmohammadi

Graduate Theses, Dissertations, and Problem Reports (ETD)

Land development is a complex and dynamic process simultaneously interacting with numerous environmental, cultural and economic procedures. In this research we studied past, present and future of land transformation in Appalachia. This dissertation is organized in three-essay format and each essay is focused on one aspect of land development processes in a sub-region in the Appalachian region. In the first essay, deep learning techniques are used to build predictive models for the land development. This study presets deconvolutional neural networks models in predicting land development. On the second essay, spatial data analysis and remote sensing are used to investigate the …

Historic Log Buildings As Archives Of Past Forest Ecology, Kristen K. De Graauw

Graduate Theses, Dissertations, and Problem Reports (ETD)

This dissertation is composed of three separate but related manuscripts with the common theme of using historic log buildings from the central Appalachian Mountain region of eastern North America as ecological archives. In Chapter 1, I explore the biases, limitations, and ecological applications of tree-ring data from historic log buildings. European immigrants selected trees from a forested stand based on species, log sizes, and construction locations. Despite this selection bias, ecological information can be gleaned from historic log buildings, which offer a complementary record of past forest ecology and represent a site type that is not often associated with old-growth …

Multidimensional Analysis Of Vulnerability: Methodological Advances And A Case Study From Malawi., Park Mcmillan Muhonda

Graduate Theses, Dissertations, and Problem Reports (ETD)

Since 1990s rural households in Malawi, constituting 85% of the population, have experienced deepening livelihood vulnerability, often manifested as persistent food insecurity. Livelihood crises have since been blamed on or attributed directly to weather perturbations/climatic shocks i.e. El-Nino induced climate variability/drought conditions. This study revealed that persistent livelihood crisis in rural Malawi cannot be attributed to or squarely blamed on weather shocks alone, rather it is at the intersection of various livelihoods shocks that rural livelihood vulnerability in Malawi is exacerbated i.e. worsening and deepening.

Thus, rural livelihood vulnerability to climate shocks in Malawi is manifest not in isolation but …

X-Ray Fluorescence Applications In Mudrock Characterization: Investigations Into Middle Devonian Stratigraphy, Appalachian Basin, Usa, Keithan Garrett Martin

Graduate Theses, Dissertations, and Problem Reports (ETD)

Mudrocks are characterized by nanometer-scale pore sizes and nano-darcy permeability, which plays a significant role in hydrocarbon flow during production. Resulting from these characteristics, mudrocks were exclusively considered a source rock, which charged overlying, more porous mediums. Hydraulic fracturing, a technology used to create artificial fractures to liberate hydrocarbons from the reservoir, enabled natural gas to be produced from mudrock reservoirs economically. Over the last fifteen years, this technology motivated research efforts to understand reservoir characteristics of mudrock. These investigations significantly improved our knowledge of mudrock systems, but have also highlighted key areas that are undeveloped and/or where conflicting hypotheses …

Peatlands And Histosols In Canaan Valley National Wildlife Refuge, West Virginia, Mitzy Leigh Schaney

Graduate Theses, Dissertations, and Problem Reports (ETD)

Canaan Valley in West Virginia contains a greater area of peatlands than any other locality in the mid-Atlantic Highlands. Extensive fieldwork focused on peat stratigraphy and pedology, combined with high-resolution radiocarbon dating, was used to evaluate five peatlands within Canaan Valley National Wildlife Refuge (CVNWR) in the central Appalachian Mountains. One hundred soil cores were profiled and described, 30 with laboratory data, including 52 radiocarbon dates. Calibrated basal peat dates among the five mapped peatlands indicate a late Pleistocene timeframe for the onset of peat genesis, ranging from ~18,600 to ~15,200 cal yr BP. The dates for peat initiation are …

Annual Aboveground Biomass Growth In Temperate Forests Of Eastern North America, Alex W. Dye

Graduate Theses, Dissertations, and Problem Reports (ETD)

The below dissertation is organized into three individual standalone manuscripts supporting the overarching theme of reconstructing annual aboveground biomass growth in temperate forests of eastern North America using dendrochronological applications. Each manuscript is organized with the intent of submission to a peer-reviewed journal. The first manuscript validated the technique I use throughout my dissertation by comparing tree-ring derived estimates of annual aboveground productivity with estimates from co-located or nearby permanent remeasurement plots at Howland, Maine, Harvard Forest, Massachusetts, and Fernow, West Virginia. The second manuscript investigated the size-related distribution of biomass growth at 16 eastern U.S. forest sites and compared …

Structural Origins Of The Doonerak Anticline, Central Brooks Range, Alaska, Gregory James Hammond

Graduate Theses, Dissertations, and Problem Reports (ETD)

The Doonerak anticline in the central Brooks Range, Alaska, exposes a package of Early Paleozoic metavolcanic and metasedimentary rocks overlain by Carboniferous to Triassic sedimentary rocks which have been correlated to the North Slope subsurface. The flanks of the anticline have been interpreted as portions of a single north-vergent nappe system emplaced during the Brookian orogeny. The Doonerak anticline is a key location for understanding the structure of the Brooks Range fold and thrust belt. Field mapping, microstructural analysis, Raman-spectroscopy of carbonaceous material (RSCM) paleothermometry, and detrital zircon geochronology data suggest the structure is not a tectonic window resulting from …

Growing Up Between Two Worlds: A Portrait Of Second-Generation American A Multimedia Project, Dalia Ahmed Elsaid

Graduate Theses, Dissertations, and Problem Reports (ETD)

This professional project is a multimedia project focusing on stories of three second-generation Americans in West Virginia. The project is disseminated using a website. It includes content curated by the project author (photos, videos, written stories, data visualization) and information selected by the participants themselves. The content will add to the information available on different cultural communities in West Virginia in general, and on second-generation Americans in particular. It is hoped the project, through its portrayals of these individuals and their immigrant families, will help to dispel and counter some of the stereotypical depictions of immigrants. With this goal in …

Recruiting And Engaging Generation Z: An Integrated Marketing Communications Plan For West Virginia University Visitors Center, Kathryn (Kallie) Priscilla Nealis

Graduate Theses, Dissertations, and Problem Reports (ETD)

The purpose of this professional project is to provide a guide of marketing and communication strategies for organizations to implement in an effort to succeed in their goals involving improving overall success and awareness of the organization. The main component of this professional project is an integrated marketing communications (IMC) plan designed on behalf of the WVU Visitors Center and their IMC goals. Examined and outlined in this IMC plan is the target audience (Generation Z), as well as overall campaign objectives, creative strategies, media objectives and evaluation procedures that are grounded in and seek to expand upon the theoretical …

Urban Exile: City Poetry By Modern American Women, Hatley Clifford

Graduate Theses, Dissertations, and Problem Reports (ETD)

Urban Exile: City Poetry by Modern American Women examines women's experience of urbanism in the early twentieth century, as depicted in the poetry of four modernist American women writers: Edna St. Vincent Millay, Amy Lowell, Evelyn Scott, and Lola Ridge. I bring to light a common experience of urban exile: a persistent state of insecurity, displacement, damage, and marginalization of women in cities. My work brings women and American women's poetry into the critical conversation about city literature, a conversation that has mostly focused on the experience of men in cities told by male writers. Recuperating the theme of urban …

Automotive Crisis: Volkswagen's Emissions Scandal & Response Strategies., Kelsey Plute

Graduate Theses, Dissertations, and Problem Reports (ETD)

The purpose of this study is to explore the use of crisis communication strategies (i.e. Coomb’s Situational Crisis Communication Theory and Bradford & Garrett’s Communicative Response Model) by examining Volkswagen’s key messages in U.S. commercial ad campaigns, individual vehicle commercials, and print ads before, during and after the emissions scandal. The content analysis also identified these specific crisis response strategies in the company’s 2015 through 2018 annual reports, press releases and letters to the company shareholders.

Three Essays On Nonlinear Effects In Development Economics: An Applied Semiparametric Approach, Jinjing Tian

Graduate Theses, Dissertations, and Problem Reports (ETD)

The first chapter studies the finance-growth nexus with firm-level data to examine the impact of debt on firms' productivity growth in Chinese industrial firms, utilizing a newly-developed nonparametric threshold regression. It shows that while debt is overall positively related with productivity growth in Chinese industrial firms, each sample group exhibits a significant threshold effect of debt, beyond which the firms' debt exhibits diminishing returns on productivity growth. Also, the magnitude of both the estimated threshold levels and partial effects of debt is heterogeneous across ownership types and regions, with state-owned enterprises (among ownership types) and firms in the western region …

The Impacts Of Energy Development On Agricultural Land Values In North-Central West Virginia, Adama Sileye Warr

Graduate Theses, Dissertations, and Problem Reports (ETD)

This study presents an empirical model that explains the impact of energy development activities on agricultural land values in north-central West Virginia. Based on the methodology and the data description, seven different models (linear and logs) are estimated and the results are analyzed to understand the contributions of each energy variable used in the models to the overall values of farmlands. We have examined 311 parcel-level sales of farmlands in 16 counties in the north-central of the state of West Virginia from January 2013 to July 2016. The results suggest that the selected model is statistically different from zero (prob …

Creating Space For Belonging Within The West Virginia Progressive Movement, Roger A. Jennette

Graduate Theses, Dissertations, and Problem Reports (ETD)

With the 2016 Presidential election come and gone, political activism within the United States has garnered more attention as political actors on the Progressive Left oppose the actions of the new administration. The West Virginia progressive movement is used as a case study of the national push towards progressive politics. Using participant diaries and a series of longitudinal interviews, this thesis explores the creation of spaces belonging within an activist organization to foster sustained involvement. The analysis points to the importance of creating a sense of belonging and the desire to ‘strive for better’ in a state that is often …

Spatial And Temporal Analysis Of Surface Water Quality In Relation To Marcellus Shale Gas Development In The Northern Panhandle Of West Virginia, Rachel Yesenchak

Graduate Theses, Dissertations, and Problem Reports (ETD)

Pre-existing water chemistry data available from the West Virginia Department of Environmental Protection were used to examine temporal changes in surface water quality related to the onset of Marcellus Shale gas drilling activity in the state of West Virginia. Drilling is concentrated in the northwestern portion of the state. Watersheds were delineated for twelve discrete stream sampling locations in the Upper Ohio-Wheeling HUC-8 sub-basin, where shale gas drilling is prevalent. Kruskal-Wallis tests were deployed to compare pre- and post-drilling concentrations of conductivity, chloride, and total suspended solids for each location. Increased concentrations of these parameters are associated with surface water …

Qualitative And Quantitative Analysis Of Carbonate Waters In The Peters Mountain Region Of Monroe County, Wv, Emily A. Bausher

Graduate Theses, Dissertations, and Problem Reports (ETD)

Water in Monroe County, WV is used extensively for public and private supply and requires quantification, chemical analysis, and assessment for contamination susceptibility. Over 250 springs were previously identified in the eastern side of Monroe County on or near Peters Mountain; 14 were continuously monitored in this study. Springs were grouped based on geologic and spatial distribution: interbedded clastic-rock springs on the mountain flanks, carbonate springs in the valley, and a thermal spring associated with the St. Clair thrust fault. Clastic and carbonate springs have calcium-magnesium-bicarbonate chemistries, neutral pHs and high alkalinities; the thermal spring has calcium-magnesium-sulfate-carbonate chemistry, low pH, …

Climate Science Literacy: A Study Of Climate Programs' Usability, Amber Rochelle Williams

Graduate Theses, Dissertations, and Problem Reports (ETD)

Literacy is an important facet of understanding how undergraduate college students comprehend climate science. This research, conducted at West Virginia University, examines the usability of climate data in three commonly used climate programs to reduce the prominent knowledge gap in climate science literacy about college students.

The objective of this research is to investigate the knowledge gap in climate science literacy by conducting focus group surveys to examine the usability of programs that use climate datasets. The three programs used in this research were the NOAA online tool, NASA’s Panoply data viewer, and GrADS programmable tool. The NOAA tool is …

How Will Anthropogenic Valley Fills In Appalachian Headwaters Erode?, Miles Reed

Graduate Theses, Dissertations, and Problem Reports (ETD)

Mountaintop removal/valley fill (MTR/VF) coal mining in the Central Appalachian region has created the most extreme anthropogenic landscape on Earth by lowering ridges and infilling headwater stream valleys. No studies have attempted to detail erosional processes active on MTR/VR landforms. A combination of field work and LiDAR data observations documents erosional features on MTR/VF landscapes. Landscape evolution modeling explores future possibilities in valley-filled catchments. LiDAR data also allows for the quantification of valley-filled catchment alteration with statistically significant differences in both drainage density and depression storage capacity between "less disturbed" and valley-filled catchments. Field and LiDAR data observations show that …

Economic Diversity And Regional Development: Geographical Scale, Structural Measurement, And Modeling Method, Jing Chen

Graduate Theses, Dissertations, and Problem Reports (ETD)

No abstract provided.