Digital Commons Network^™

The Use Of Heavy Solvents For Separating Seed From Soil, Edward D. Carter, Stephen Challis, Ian G. Ridgway

IGC Proceedings (1977-2023)

Problems related to separating seeds from soil in ecological studies involving seed-seedling dynamics of annual pastures are discussed. The special roles of non-flammable chlorinated solvents as flotation agents in separating seed from soil are described. Studies showed that there was a slight, but significant (P < 0.05), overall effect of these chemicals on germination of seed of six species and cultivars: however, perchloroethylene appears to have no effect on germination.

Where Regenerative Design Theory Meets Ground: A Case Study Of Xreef On Weizhou Island, Chengjun Li, Valentina Rognoli, Fuqing Xu

DRS Biennial Conference Series

As the Anthropocene increasingly undermines natural systems, there is an urgent need for design to move beyond harm reduction toward active ecological restoration. Regenerative Design (RD) has emerged as a promising paradigm to complement sustainable design; however, fragmented knowledge and inconsistent terminology hinder designers’ systematic understanding. To bridge the gap between theory and practice, this study first reviews the philosophical stances and key approaches of RD, then examines its implementation in a coral reef restoration project on Weizhou Island. Reflection on the project revealed three major challenges: limited capacity for interdisciplinary collaboration, insufficient tools for stakeholder engagement, and inadequate dynamic …

Biodiverse Design And The Ethics Of Bioempathy In Practice, Delphine Lewandowski

DRS Biennial Conference Series

This paper investigates biodiverse design as a practice through which environmental ethics can inform architectural production. Drawing on the concept of bioempathy—understood as the recognition of the intrinsic value of the biotic community—it develops an ethical and operational framework for guiding design reasoning. This framework is then applied to a reflective analysis of biodiverse wall prototypes developed by the author with an interdisciplinary team, used as an empirical ground to examine how ecological intentions were translated into material and spatial decisions, and how observations of plant establishment and spontaneous colonisation contribute to reassessing the assumptions embedded in those intentions. The …

Landscapes Of Exclusion: Mapping Racial Boundaries And Environmental Burdens, Monique A. Baxter

2026 Symposium

Inspired by the author’s work with the mapping team for the Eastern Washington University Racial Covenants Project, this project uses additional GIS layers to reveal the enduring imprint of historic racial exclusion on today’s urban landscape. Spokane, Washington’s landscape, like many urban areas across the country, bears the imprint of racial exclusion through mechanisms such as restrictive covenants and redlining. This project examines how racial covenants and red lining layers relate to current brownfield and superfund sites to shape Spokane’s long-term environmental injustice. Using digitized property records, historic zoning maps, and GIS spatial analysis, this project demonstrates that historically red …

National Trends And State-Level Correlates Of Medications For Opioid Use Disorder Utilization Among Treatment Admissions In The United States, 2014-2023, Prince Osei Sarpong, Emmanuel Owusu, Manasvi Shiyani, Michael Ago Tetteh, Naa Komley Commey

Liberty University Research Week

Background: Medications for opioid use disorder (MOUD) reduce overdose risk and improve retention in care, yet implementation at treatment entry remains uneven across the United States. Study objectives and hypotheses: To examine national and state-level patterns in MOUD use at treatment admission from 2014 through 2023 and to identify state-year characteristics associated with higher utilization. We hypothesized that MOUD use would vary substantially across states and would be lower in state years with greater structural disadvantage.

Methods: A repeated cross-sectional ecological study was conducted using the Treatment Episode Data Set-Admissions public use file. The analytic sample included adult admissions from …

2026 Conference Program, Georgia Southern University

GS4 Student Scholars Symposium

Conference Program

Evaluating Sexual Dimorphism In An Urban Neonate Regina Septemvittata Population, Arleigh Wagoner, Nathan Wilkins

Liberty University Research Week

Regina septemvittata, commonly known as Queensnakes, are broadly distributed across eastern and central North America. In adult Queensnakes, females average a greater snout-vent length (SVL) than males. Since Queensnakes exhibit size dimorphism and have short life spans and low survival rates, it was hypothesized that neonate Queensnakes begin to display a distinct sex-related difference in SVL within their first few months of life. Our study investigated growth rates of neonate Queensnakes by conducting a capture-mark-recapture (CMR) study over a three-month period (August through October; birth to first brumation) in an urban stream in Lynchburg, VA. Captured snakes were measured (SVL), …

National Trends And State-Level Correlates Of Medications For Opioid Use Disorder Utilization Among Treatment Admissions In The United States, 2014-2023, Prince Osei Sarpong, Emmanuel Owusu, Manasvi Shiyani, Michael Ago Tetteh, Naa Komley Commey

Liberty University Research Week

Background: Medications for opioid use disorder (MOUD) reduce overdose risk and improve retention in care, yet implementation at treatment entry remains uneven across the United States. Study objectives and hypotheses: To examine national and state-level patterns in MOUD use at treatment admission from 2014 through 2023 and to identify state-year characteristics associated with higher utilization. We hypothesized that MOUD use would vary substantially across states and would be lower in state years with greater structural disadvantage.

Methods: A repeated cross-sectional ecological study was conducted using the Treatment Episode Data Set-Admissions public use file. The analytic sample included adult admissions from …

2026 Conference Program, Georgia Southern University

GS4 Student Scholars Symposium

Conference Program

The Potential Role Of Soil Depth And Land Management History In Rangeland Soil Seed Bank Community Dynamics., Owen K. Palsic, Akasha Faist, Madeline Mayorga

University of Montana Conference on Undergraduate Research (UMCUR)

Rangelands provide critical ecosystem services for societies across the globe, yet land use changes, climate change, and invasive species are causing large-scale rangeland degradation. To maintain effective rangeland ecosystem function, it is critical we understand the comprehensive ecological dynamics of these systems. One crucial ecological variable that is often overlooked is the soil seed bank, which is otherwise defined as the community of germinable seeds stored in the soil of a given system. Many ecological studies and models leave out soil seed bank communities, despite their undeniable importance in rangeland ecosystems, and instead only consider the aboveground vegetation community. In …

Association Between Pm₂.₅ Air Pollution Exposure And County Level Psoriasis Prevalence: A Nationwide Ecological Study, Shihab Chowdhury, Thomas Last

Research Day

Introduction

Psoriasis is a chronic inflammatory skin condition affecting approximately 3% of U.S. adults. While environmental exposures such as fine particulate matter (PM₂.₅) have been implicated in systemic inflammation, their association with psoriasis at the population level remains unclear. This study modeled county level psoriasis prevalence across the United States and evaluated its ecological association with long term PM₂.₅ exposure from 2011 to 2014.

Methods

We used NHANES 2011-2014 data to fit a survey-weighted logistic regression model predicting psoriasis diagnosis based on sex, age group, race/ethnicity, education, and poverty level. These demographic coefficients were applied to U.S. Census-derived county populations …

Food Insecurity As A Primary Driver Of Cardiometabolic Disease Across Georgia Census Tracts, Jordan R. Howard, Thomas Last, Winston Price

Research Day

Introduction: Cardiometabolic diseases including diabetes, hypertension, and obesity remain leading causes of morbidity and mortality in the United States and disproportionately affect communities across the southeastern region. In Georgia, disease burden is concentrated in rural counties and economically disadvantaged urban areas. Public health frameworks have traditionally attributed these disparities to limited physical access to healthy food, commonly described as “food deserts,” where distance to grocery stores is presumed to constrain dietary quality and worsen metabolic health. However, growing evidence suggests that economic food insecurity may play a larger role in cardiometabolic risk than geographic food access. Few studies have evaluated …

Distribution And Diversity Of Aquatic Snails (Basommatophora) In Tributary Systems Of The South Central Plains Ecoregion In Arkansas, Madison Ward, Zach R. Crain

ATU Scholars Symposium

Freshwater aquatic snails (Basommatophora) are seldom surveyed, yet they play an important part in the aquatic community. Arkansas, is one state where there have been very few snail-specific surveys, especially in the South Central Plains Ecoregion. This project investigates the distribution and diversity of freshwater aquatic snails in three previously unsampled creeks in Arkansas (Champagnolle Creek, L’Aigle Creek, Moro Creek, Chemin-A-Haut Bayou, and Derrieusseaux Creek). Sampling was conducted across various sites within each watershed, qualitative methods were used to assess snail diversity and distribution patterns. A total of 659 individuals from 8 species were observed across all five watersheds. The …

Assessing The Effect Of Precipitation Anomalies On Aedes Aegypti-Borne Viruses In Low Middle Income Countries Of The Indo-Pacific Region: A Systematic Review, Carolyn Skotz

GW Research Showcase 2021-2026

No abstract provided.

Resuscitating Rapid Response And Code Blue Education, Danielle Fogel

Providence Nursing Research Conference 2023 – Present

No abstract provided.

A Reflective Lab Journal For Biodesign: Navigating More-Than-Human Sensibilities And Disciplinary Tensions, Jiho Kim, Iohanna Nicenboim, Joana Martins, Elvin Karana

IASDR Conference Series

This paper introduces reflective journaling as a tool for advancing biodesign practices, merging documentation methods from biology and design while integrating more-than-human sensibilities into laboratory practices. It highlights the need for tools that can flexibly support record-keeping across biology and design, balancing precision and accountability with iteration, creativity, and collaboration. Furthermore, it critically addresses calls to support care ethics and nurturing multispecies interactions within biodesign. Through an explorative review of diverse documentation formats, including laboratory notebooks and annotated portfolios, and informed by our own biodesign experiences, we introduce the Reflective Biodesign Lab Journal as a potential approach to address these …

Predictors For Different Levels Of Covid-19 Vaccination Among Immigrant And Non-Immigrant Adults, Cheryl Zlotnick, Orit Cohen Castel

International Nursing Research Congress (INRC)

Overview: This study contributes to the literature by examining a comprehensive operationalization of vaccination status among working-age (21-49 years), immigrant and non-immigrant adults.

Background: The commonly used outcome, obtained any vaccination versus not, tends to overestimate COVID-19 vaccination utilization, distorting the associations found with covariates/predictors. More recent studies have used a three-variable COVID-19 status outcome of any, partial or complete vaccinations. However, they lacked a theoretical framework and focused on older and non-immigrant populations. This study examined working-age immigrants and non-immigrants, used the three-variable operationalization of COVID-19 vaccination, and was guided by Andersen’s Behavioral Model with its three factors …

Environmental Related Variation In A Natural Grassland Of Rio Grande Do Sul, Brazil, V De P. Pillar, A.V A. Jacques, I I. Boldrini

IGC Proceedings (1977-2023)

Vegetation ecology studies help research efforts to improve natural grassland productivity by laying foundations for improvement techniques directed to benefit desired plant com­munities. Experiments reveal knowledge about the environ­mental conditions responsible for community structure and productivity, while surveys are a fast and cheap means for exploratory studies. In either case, data interpretation are helped by multivariate methods described by different authors, e.g., Orloci and Kenkel (1985). Our work is aimed to identify the environmental factors most responsible for vegetation variation in natural grasslands, locally known as « campos », and to formulate hypotheses about the effects of fertilization and grazing …

Greenlining: A Policy Response To Environmental Racism, Adynn L. Kitchin

Thinking Matters Symposium

Redlining describes the deliberate actions made in the 1930s by the U.S. Government’s Home Owners’ Loan Corporation(HOLC), in which the race of a neighborhood’s residents was used to measure its degree of desirability. This information was produced through maps, which consequently denied these individuals’ access to mortgages and other financial services. Although redlining was outlawed by the 1968 Fair Housing Act and the 1974 Equal Credit Opportunity Act, the legacy still lingers today. The United States’ Department of Justice launched the Combating Redlining Initiative in 2021, which has since received $107 million in settlements for neighborhoods of color across the …

Mapping And Examining Recreation In Indian Creek, Bears Ears National Monument, Elisabeth Currit, Neil Hansen, Brigham Daniels, Alex Long, Katy Merritt, Mary Proteau, Sam Spackman

Utah Space Grant Consortium

Recreation is growing in desert areas of the western United States, and mapping the expansion of these activities is vital to management and conservation efforts. Desert ecosystems provide many critical ecosystem services, including carbon storage, and the growing popularity of outdoor recreation in Western US desert regions poses a threat to these ecosystems. Unregulated recreational activities can harm desert plant and soil health, including the functioning of biological soil crusts. This research project focuses on mapping several types of popular recreational activities in order to monitor and evaluate the impact of these activities within the Indian Creek areas of Bears …

A New Mitochondrial Genome For The Illinois Spring Cavefish, Forbesichthys Agassizii, Richa Patel

Undergraduate Research and Engagement Symposium

The Spring Cavefish is a species of conservation concern in Illinois due to habitat degradation and limited survey data. Traditional methods for detecting this species are often hindered by the difficulty in accessing its habitat, leading to a limited understanding of its distribution and ecology. Advances in environmental DNA techniques offer a promising way to more precisely determine F. agassizii’s distribution, but the lack of a reference mitochondrial genome for F. agassizii impedes the development of effective detection assays. In this study, we assembled a complete mitochondrial genome for F. agassizii using existing SRA data.

Diet, Bioaccumulation Of Heavy Metals, And Population Genomics Of Narrow-Barred Spanish Mackerel (Scomberomorus Commerson) From The Arabian Gulf, Shaima Malik

Thesis/ Dissertation Defenses

Marine organisms are integral part of marine ecosystems, forming complex feeding interactions. Large predatory fish are especially important because they often govern food web structures through top-down influences. The narrow-barred Spanish mackerel (Scomberomorus commerson) is an ecologically and economically important fish species that feeds on small forage fish. The current study focuses on three aspects of the narrow-barred Spanish mackerel (diet, bioaccumulation of heavy metals and population genomics). This species is considered near-threatened, as its population has been declining due to anthropogenic stressors. The Arabian Gulf experiences continuous natural stressors, which are further exacerbated by human activities, impacting the marine …

Predicting Capture And Survival Probabilities Of The Arizona Tiger Salamander: A Comparison Of Capture-Recapture Models, Brittney Nelson

Scholars Week

Capture-recapture models are essential tools for estimating population dynamics in ecological studies. A fundamental component of these models is the capture history matrix, which records individual detection over time and serves as the basis for estimating survival and capture probabilities. This presentation explores three statistical approaches to these estimations: the Cormack-Jolly-Seber (CJS) model, the Hidden Markov Model (HMM) for CJS, and the Bayesian CJS model. The CJS model provides a likelihood-based framework for estimation, and the HMM CJS incorporates latent states into the model to account for uncertainty in detection. The Bayesian CJS extends this same analysis by integrating prior …

Climate Change And Galamsey In Northern Ghana: Security Implications For The Sahel, Deborah Mawusi Ameh

Helms School of Government Spring Public Policy Conference

The impact of both climate change and galamsey (illegal small-scale mining) on the Ghanaian economy is manifold ranging from personal to state insecurity. Sharing a border with the Sahel and its associated problems regarding state capacity and instability, this paper sought to understand how the twin internal issues (climate change and galamsey) within the northern part of Ghana would impact the already unstable Sahelian region. Using the Human Needs Theory (HNT), and a qualitative approach of rigorous content analysis, this paper was able to understand the push factors accounting for the overindulgence in galamsey such as economic distress and lack …

Thermophilic Microbiota Of Fifth Water Hot Springs: A Genomic Perspective, Ethan Powers, Zack Galbraith, Trever Thurgood

Annual Research Symposium

Geothermal hot springs provide unique microbial habitats characterized by extreme temperatures, variable pH, and diverse geochemical conditions. This study investigates the microbial diversity of three hot spring locations in Diamond Fork Canyon, Utah—Diamond Fork Warm Springs, Fifth Water Hot Springs, and Monk’s Hollow Trailhead—using Oxford Nanopore MinION sequencing of the 16S rRNA gene. Samples were collected in triplicate and analyzed to identify the bacterial composition, with a focus on potential opportunistic pathogens. Our results revealed a diverse microbial community, including members of Pseudomonas, Comamonas, Helicobacter, and Flavobacterium, some of which are known for biofilm formation, antibiotic …

A Paradigm For Ecological Dynamics In Predator-Prey Systems: Applications To Climate Change, Grayson D. Adams, Aditi Ghosh Dr.

Annual Symposium on Biomathematics and Ecology Education and Research

No abstract provided.

Explainable Artificial Intelligence To Interpret Spatially-Explicit Impacts Of Future Climate Change On Species Distribution, Lei Song, Amy E. Frazier, Peter Kedron, Diogo S. A. Araujo, Diyang Cui, Brian J. Enquist, Brian Maitner, Cory Merow, Gabriel M. Moulatlet, Efthymios I. Nikolopoulos, Patrick R. Roehrdanz

I-GUIDE Forum

Biodiversity is essential for maintaining ecosystem balance and functionality, providing vital services such as climate regulation. The rapid decline in biodiversity, driven by habitat loss, habitat fragmentation, and climate change, poses significant threats to ecosystems. Climate change, in particular, is fundamentally altering habitats, leading to shifts in species distributions. However, existing research often lacks decomposed contribution analyses, particularly spatially, for a changing individual environmental attributes when modeling species distribution as an aggregate result of all factors and their interactions. Such analyses are crucial for identifying climate refugia and prioritizing conservation efforts. Taking endangered mammal species as an example, this study …

Deciphering Above-Treeline Vegetation Greenness Trends: Insights From The Carpathian Mountains, Pavel Dan Turtureanu, Arthur Bayle, Nicoud Baptiste, Olimpiu Traian Pop, Mihai Pușcaș, Philippe Choler

FRONTIERS UNBOUND: Exploring Extreme Environments

No abstract provided.

Birth Defect Trends Within Texas Public Health Region 11, 2000-2019: An Analysis Of Texas Department Of State Health Services Public Data, Jonathan M. Hebert, Miguel A. Lopez, Padmanabhan Rengasamy

Research Colloquium

Background: South Texas is a medically underserved area with pockets of low socioeconomic status and poor access to healthcare, including prenatal care. This paper aims to monitor the changes in prevalence for cardiac, circulatory, gastrointestinal, genitourinary, and neural tube birth defects in this region in the last two decades to monitor the effectiveness of current public health efforts.

Methods: Public data on 20 birth defects from the Texas Department of State Health Services were obtained for decades 2000-2010 and 2010-2019 in Texas Public Health Region 11 and the remaining regions of Texas. Prevalences and odds ratios for all birth defects …

Influence Of Different Breeds Of Pigs To The Natural Succession, H D. Matthes, A.C D. Micklich, G Dietl, H Mohring, W Jentsch

IGC Proceedings (1977-2023)

The aim of this study was to find out the effect of pigs on the natural succession. We used 4 different breeds of pigs for our investigations. Because of the grazing behaviour and their rooting activity the total number of plants increased up to 30%. But the vegetation quickly returned to conditions prior to rooting, if the rooting activity fails to happen. Rooting activity of pigs on floodplain soil and following grazing in the next spring after rooting permits seeds of different species of plants to germinate and develop in the plant free areas. These plants often have little chance …