Ecological And Evolutionary Divergence Of A Shared Sympatric Color Polymorphism In Paracirrhites Hawkfish, Samuel Greaves

Graduate Studies Theses and Dissertations 2026

Color polymorphism provides a tractable window into how selection, gene flow, and ecology interact to maintain phenotypic diversity and initiate divergence. I investigate the ecological and genomic basis of sympatric light and melanistic morphs in two reef hawkfishes, Paracirrhites arcatus and P. hemistictus, across Guam and Hawai‘i. This study aims to determine whether the color morphs of these hawkfishes are a stable polymorphism or have begun the process of ecological speciation. For P. arcatus revealed substantially lower density on Guam (0.086 ind/m²) than reported for Hawai‘i (0.292 ind/m²) and a strong skew away from the melanistic morph on Guam …

Rhetoric Of Opportunity: An Analysis Of Gullah Geechee Histories Through The Lens Of Counterstory, Xaria Arthur

Graduate Studies Theses and Dissertations 2026

Counterstory as a method/ology has been used in a variety of disciplines to share experiences of individuals and communities whose voices have been historically silenced or suppressed. Utilizing this methodological framework, my study shares the stories of six Gullah Geechee descendants with ancestral roots in the unincorporated community of Nesmith in Williamsburg County, SC. Treating these minoritized and individual stories as experiential knowledge, I trace the counterstories as topoi to introduce and develop the theoretical concept that I call the rhetoric of opportunity, which refers to memories or stories that have come to motivate individuals toward or away from …

Lack Of Disparities In Postoperative Care After Ileocecal Resection In Patients With Crohn's Disease At Tertiary Inflammatory Bowel Diseases Centers, Shannon Coombs, Molly Powell, Kemmian Johnson, Jessica Hu, Mollie Webb, Philip Mcdaniel, Parakkal Deepak, Edward L Barnes

2020-Current year OA Pubs

BACKGROUND: Prior studies suggest that longer drive time (DT) to specialists and higher area deprivation index (ADI) are linked to worse outcomes in inflammatory bowel disease (IBD), but their impact on postileocolic resection (ICR) care in patients with Crohn's disease (CD) is not well defined.

OBJECTIVES: We aimed to evaluate disparities in post-ICR care based on DT and ADI.

METHODS: Spatial analysis was performed with ArcGIS Pro to geocode patient and medical facility addresses with StreetMap Premium locators. High DT was defined as >60 min from the center. Data were analyzed using basic statistics and multivariate logistic regression.

DESIGN: A …

Resilient Built Environment: An Overview On Design Strategies For Coastal Adaptation To Sea Level Rise, Farzaneh Soflaei, Gelareh Abdolzadeh, Navid Ziaee, Mohammad Amin Jafari, Faeghe Borhani

Civil & Environmental Engineering Faculty Publications

This paper delves into the escalating risks faced by urban coastal communities due to tidal and storm flooding, exacerbated by climate change-induced Sea Level Rise (SLR). Projections indicate a potential increase in sea levels by at least 3 feet by 2100, with historical data revealing an average annual rise of 1.2-1.7 mm since the 1900s. With over 300 million individuals inhabiting coastal areas, low-lying regions emerge as particularly vulnerable to the impacts of SLR. This accelerated rise amplifies the significant challenge of nuisance flooding, a local-scale issue aggravated by high tide and winds, leading to inundation, road closures, infrastructure deterioration, …

The Association Between Maternal-Fetal Medicine Physician Density And Pregnancy Outcomes, Tetsuya Kawakita, Rula Atwani, Misa Hayasaka, Lindsay Robbins, George Saade

Department of Obstetrics & Gynecology Faculty Publications

Objective

We sought to examine the association between maternal-fetal medicine (MFM) physician density and adverse pregnancy outcomes at the state level.

Study Design

This was a cross-sectional analysis of publicly available, state-level data from 2018 to 2021, including Natality, Multiple Cause-of-Death, and Fetal Death databases. The number of active MFM physicians per year was obtained for each state from the American Medical Association Masterfile. The primary exposure was the density of MFM per state, categorized into three groups: (1) low density (< 30 MFM physicians per 100,000 live births), (2) moderate density (30-59 MFM physicians per 100,000 live births), and (3) high density (≥60 MFM physicians per 100,000 live births). Our primary outcome was maternal mortality during pregnancy and up to 42 days postdelivery. Our secondary outcomes were pregnancy-related mortality up to 365 days postdelivery and stillbirth. We calculated adjusted incident rate ratios (aIRR) and average marginal effect (AME) with 95% confidence intervals (95% CI) using multivariable negative binomial mixed effects regression models.

Results

Overall, there were 14,792,743 live births, 3,440 maternal mortalities, 4,980 pregnancy-related mortalities, and 90,848 stillbirths included. The …

The Role Of Soil In Historical Warfare: A Review, Gian Franco Capra, T. A.R. Nogueira, Cassio Hamilton Abreu-Junior, Arun Dilipkumar Jani, Rafael Barroca Silva, Eleonora Grilli, Alessandro Auzzas, Antonio Ganga

Biology, Agriculture and Chemistry Faculty Publications and Presentations

Soil has played a fundamental yet undervalued role in shaping the fate of historical warfare. While the effects of war on the soil environment have been thoroughly investigated, the impact of soil on military strategies and battle outcomes remains poorly understood. This review aims to: i) explore the multifaceted role of soil in warfare, focusing on its impact on several aspects (mobility, fortifications, camouflage, health, geopolitical strategy, etc.); ii) identify which soil types were usually most associated with conflicts, and iii) how soil features influenced military decision-making. A dataset of over 17,000 recorded battles (1468 BCE–2003) was …

Quantifying Uncertainty In Landscape Evolution And Provenance Analysis: Insights From Statistical And Numerical Modelling, Vivian Carmello Grom

LSU Doctoral Dissertations

Landscape evolution models (LEMs) and detrital zircon provenance are widely used to investigate Earth surface processes, yet both face challenges related to quantifying model behavior and interpreting sedimentary signals under realistic, heterogeneous conditions. This thesis addresses these challenges through analysis and case studies that develop and apply new approaches for analyzing landscape dynamics and assessing uncertainties in sediment provenance.

Chapter 1 introduces a quantitative framework for evaluating LEM outputs using Shannon Entropy, Moran’s I, and Geary’s C. Applied to simulations with steady uplift, periodic uplift, spatially variable uplift, and a timeseries of DEMs, these metrics capture spatial organization and information …

Seasonal And Geographic Patterns Of Gastroschisis In Canada: Protective Effect Of Periconceptional Sunlight Exposure, Shiliang Liu, Shin Jie Yong, Dunjin Chen, Gavin C. Hughes, Claude L. Hughes

Department of Medicine Faculty Publications

Background: Gastroschisis is a right-sided, full-thickness defect with extra-amnionic herniation of abdominal contents directly into the amniotic cavity. The causes of gastroschisis remain obscure. We hypothesized that limited periconceptional sunlight exposure might lead to insufficient vitamin D during fetal development and play a role in gastroschisis etiology.

Methods: We conducted a population-based cohort study of infants conceived in Canada between April 2006 and March 2020. We used winter months (i.e., November and December) and northern geographic latitudes as indicators of insufficient sunlight exposure, while summer months (July and August) and southern geographic latitudes were considered as reference. We examined the …

Beyond The Classroom: The Continuing Impact Of Brown V Board On Equitable Access To Career And Technical Education For Historically Underrepresented Students, Shannon Hood

Murray State Theses and Dissertations

Using a qualitative phenomenological design grounded in Critical Race Theory (CRT) and Culturally Relevant Pedagogy (CRP), this study examined how institutional structures, instructional practices, and community and industry partnerships shape equitable access, engagement, and outcomes in secondary Career and Technical Education (CTE) programs serving students from historically marginalized backgrounds. Semi-structured interviews were conducted with thirteen participants, including educators, administrators, and industry partners engaged in secondary CTE implementation. Thematic analysis identified recurring patterns related to leadership decision-making, instructional relevance, culturally responsive teaching practices, relational trust and advocacy, and authentic work-based learning (WBL) experiences. Findings indicate that equitable participation in CTE extends …

The Long-Term Effects On Youth Growing Up In Foster Care, Brittney L. Olatunde

Murray State Theses and Dissertations

Abstract

This study examined the long-term effects of the foster care system on youth, with particular focus on how early life experiences shape developmental trajectories into adulthood. Findings indicated that involvement in the foster care system significantly influences socioemotional, psychological, and life outcomes that persist across the youth life span. Understanding these enduring effects is essential for recognizing how early disruptions and transitions impact later adult functioning. Guided by life course theory, this study explored how the timing of foster care experiences, critical life transitions, and environmental contexts collectively influence individual development over time. Emphasis was on how entry and …

Beyond Income Deprivation: Assessing The Compounding Impacts Of Fixed Costs And Broadband Equity On Food Security, Aemro Worku, Morgan Woodle Phd, Nakeina E. Douglas-Glenn, Research Institute For Social Equity Rise

Research Institute for Social Equity

Nearly 47 million people in the United States, including 14 million children, are considered food insecure by the U.S. Department of Agriculture. These nutritional deficiencies are often considered problems of uniform economic hardships. Analyzing 50-state data, this report reveals two distinct structural challenges: financial cash flow and physical geography. First, absolute food insecurity is driven by high costs of living, fueled by housing rent burdens, and is mitigated by strong broadband internet access that connects families to benefits. Second, physical access to healthy food shows no independent relationship with household budgets; rather, it is a problem of corporate grocery placement …