Digital Commons Network^™

Riparian Ecosystem Condition And Impaired Floodplain Assessment In The Congaree River Watershed, South Carolina, Olusola-Ige O. Adetoro, Cuizhen Wang, Ayobami T. Salami, Olusegun O. Awotoye

Faculty Publications

Floodplain riparian ecological zones (FREZs) are transitional environments that facilitate interactions among hydrological, geomorphological, and environmental processes within aquatic and terrestrial systems. In the context of climate change, urban growth, and increased hydrologic modifications, these systems are experiencing accelerated degradation. This study employed a multi-criteria Riparian Condition Assessment (RCA) framework that combined the Riparian Condition Assessment Tool (RCAT) and a fuzzy inference system (FIS) to evaluate riparian corridor health in the Congaree River watershed, South Carolina, USA. Using 30 m LANDFIRE land-cover data, hydrologic segmentation (at 500 m reach scale), and transport infrastructure overlays, we quantified riparian vegetation deviation, land-use …

Maps Behind Bars: A Spatial Study Into Wrongful Convictions And Social Equality, Bailee Kinghorn, Emma Milne, Camille Heaton

FHSS Mentored Research Conference

Wrongful convictions are representative of errors in the criminal justice system. Often reflecting broad patterns of social inequality, prior research suggests that structural factors may influence the likelihood of conviction and access to legal resources. This project investigates how these social equality indicators correlate with wrongful convictions at the county level across the United States. Using data from the National Institute of Health and the National Registry of Exonerations, we aggregate measures of education, poverty, and non-English-speaking populations normalized by population density and combine them with exoneration records to create a series of comparative maps. Through spatial analysis in ArcGIS, …

Local Institutions Mediate Effects Of Land Scarcity In Indigenous Territories In Amazonia, Ana Lucía Araujo Raurau, Oliver T. Coomes

Student Publications [Scholarly]

Indigenous territories in Amazonia sustain forest cover through the practice of swidden-fallow agriculture, yet declining land availability threatens both the ecological sustainability of this agricultural system and its contributions to community livelihoods. While scholars recognize land scarcity’s potential to drive transformations in shifting cultivation systems, we lack a systematic understanding of how local institutional frameworks shape heterogeneous responses to resource constraints. This study examines how land access mechanisms, distribution dynamics and property regimes among Indigenous communities mediate experiences of and adaptations to land scarcity in the Peruvian Amazon. We conducted a comparative case study of Solidaridad and Tamboruna, two land-scarce …

Altimetry Data From Icesat-2 Brings Value To The Private Sector, Molly E. Brown, Aimee Neeley, Abigail Phillips, Denis Felikson

Student Publications [Scholarly]

This short communication synthesizes evidence on how the Ice, Cloud and Land Elevation Satellite-2 (ICESat-2) altimetry data are used by private sector actors and the implications for economic value creation. Using secondary research that collected and summarized information from existing data from reports, journals, websites, and databases, the work identifies 54 companies across 9 sectors leveraging ICESat-2-derived elevation, canopy height, bathymetry, and surface measurements to inform decision-making, risk assessment, and new business models. The analysis situates ICESat-2 within a broader context where freely available Earth observation data can generate substantial private- and public-sector value, potentially exceeding hundreds of billions in …

Developing A Range Prediction For The Imperiled Florida Harvester Ant (Pogonomyrmex Badius) Using Species Distribution Modeling, Noah Williamson

Honors Theses

The Florida Harvester Ant (Pogonomyrmex badius) was once widespread and commonplace throughout the sandhills of the Southeastern United States, providing key ecosystem services, such as seed dispersal and soil aeration. Over recent decades, however, Florida Harvester Ant populations have declined in some areas. Current literature postulates that Red Imported Fire Ants (RIFA), and the insecticides used to manage them, as well as further human encroachment onto their habitat, all likely contributed to Florida Harvester Ant population declines. Thus, to better protect these organisms, pursue data-driven conservation efforts, and guide management practices, more information about their nest site selection, as well …

Rural Transformations And Identity In Northern New Mexico, Eva Gemrich

Geography ETDs

In the U.S. West, research points to a significant transformation of rural places, including rural blight, a decline in extractive industries, and changing migration patterns. In Northern New Mexico, these rural transformations are occurring alongside a long and continuing history of tensions and conflicts relating to land, water, and property regimes, which are intertwined with notions of identity, culture, and power. Using participant observation and semi-structured interviews, this thesis explores how rural transformations, particularly shifting land ownership, have influenced identities and cultural values along the Upper Rio Chama in Northern New Mexico. I find that comparatively wealthy in-migrants are purchasing …

New Insights From Old Sources: Using Hot Spot Analysis Of Fire Insurance Documents To Characterize The C. 1800 Built Environment Of Fredericksburg, Va, Grace Hannah Buck

Research and Creativity Symposium

The field of historic preservation makes use of many types of archival resources to understand past events, practices, and spaces that would otherwise be difficult to parse from extant objects.  Though they can be used in their initial state, application of geospatial methods to certain archival resources can improve their ease of use, reveal missing context, or provide new insight to the information they hold.  In that vein, this study applies geospatial analysis to a collection of historic insurance policies issued by the Mutual Assurance Society (MAS) of Virginia (1796-1867) for buildings in Fredericksburg, VA, at the turn of the …

Strengthening Students' Political Thinking Skills By Researching The Annexation Of Texas, Rebecca Macon Bidwell, Jeremiah Clabough

The Councilor: A National Journal of the Social Studies

The unit plan in this manuscript uses best practices from the C3 Framework published by the National Council for the Social Studies and Wayne Journell’s ideas about political thinking to engage students in discussion of the politics leading to the nomination of Governor James K. Polk as the Democratic Party nominee for president in the U.S. 1844 presidential election. Students explore the impact of candidates’ views of the annexation of Texas during this election as well as the influence of President Jackson on the nomination process in the Democratic Party. Ultimately, the election pitted Governor James K. Polk, the dark …

Hitler Must Be Killed: A Wwii Case Study, Jeffrey Byford, Presley Shilling, Alisha Milam

The Councilor: A National Journal of the Social Studies

Social studies education during the 1960s experienced an educational renaissance known as the new social studies movement. Over 50 projects were funded by the National Science Foundation or private corporations to interject a student-centered curriculum into K-12 classrooms during this period. Nearly 60 years later, can student-centered decision-making activities be used in an era of high-stakes testing and planned curriculum? This article attempts to rekindle students' interest in decision-making and discussion by exploring elements in Moral Reasoning: The Value of Life from the Harvard Social Studies Project (HSSP). The activity called "Hitler Must Be Killed" helped students bring the content …

Weather Rescue At Sea: Recovering Historical Weather Observations From 19th Century British Naval Ships, Praveen Teleti, Ed Hawkins, Clive Wilkinson

Research Collection College of Integrative Studies

Ship logbooks represent a critical source of historical meteorological data, providing valuable observations of barometric pressure, air temperature, sea surface temperature, wind force and direction, and other variables. Substantial quantities of these records are unavailable to climate science as they have not yet been transcribed. We present ‘Weather Rescue at Sea’, a citizen-science project which transcribed millions of weather observations contained in 19th Century UK Royal Navy ship logbooks. We describe the logbook structure and weather observation-taking instructions and discuss significant challenges with the translation of handwritten text into accurate data due to errors arising from ambiguous handwriting, historical terminology, …

High-Resolution Monitoring Of Intra-Seasonal Agricultural Drought Using Sentinel-2 And Machine Learning Across Bimodal Growing Seasons In Kenya, S. Mohammad Mirmazloumi, Harison Kipkulei, Rose Waswa, Tobias Landmann, Tom Dienya, Maximilian Schwarz, Fabrizio Ramoino, Clément Albergel, Gohar Ghazaryan

All Peer-Reviewed Publications

Drought presents significant challenges to agriculture, threatening food security and livelihoods, across many regions. In Kenya, recurrent droughts across diverse agro-ecological zones emphasize the urgent need for reliable and scalable drought assessment methods. Although drought assessment with various datasets has been carried out for this region, many of them often use course or moderate resolution data. This study uses high-resolution Sentinel-2 observations and machine learning to monitor intra-seasonal crop conditions and assess drought impacts across bimodal growing seasons. Using pixel-based supervised random forest models trained with multiple vegetation indices as input, we classify croplands into drought-affected and unaffected areas. The …

Connectivity And Tourism Flow In Small Island Developing States, Edmir Luciano Dos Santos Ferreira, João Paulo Madeira

International Journal of Islands Research

Tourism in Small Island Developing States (SIDS) faces unique sustainability challenges, with connectivity emerging as a critical factor. These nations, often situated in remote locations, encounter significant accessibility constraints and limited infrastructure, which restrict tourist flows and adversely affect economic development. The primary aim of this paper is to analyse the relationship between connectivity and tourism flows in SIDS, exploring how connectivity, proxied by geographical and cultural-political distance, influences tourism in these regions. Furthermore, the study seeks to determine whether belonging to different SIDS regions or exhibiting varying levels of development helps destinations attract greater tourist flows, by examining several …

Cover And Foreword, Nancy Hoalst Pullen, Mark W. Patterson

The Geographical Bulletin

Cover and Foreword

Volume 66-2, November 2025, Nancy Hoalst Pullen, Mark W. Patterson

The Geographical Bulletin

Volume 66-2, November 2025: Complete

A Note From The Editors, Nancy Hoalst Pullen, Mark W. Patterson

The Geographical Bulletin

A Note From the Editors

Quantifying Potential Spatial Accessibility To Adult American Sign Language Classes In Los Angeles County, Caroline R. Baumann

The Geographical Bulletin

This research examines potential spatial accessibility of adult American Sign Language (ASL) learning opportunities in Los Angeles County, California (USA). Over 90% of all deaf children are born to hearing parents, who typically do not know sign language. Research has shown that deaf children whose parents learn sign language tend to have better outcomes than those who do not. Thus, adult accessibility to sign language classes is crucial for the success of deaf children. The Two-Step Floating Catchment Area (2SFCA) method was used to calculate a provider-to-population ratio using network analysis and aggregate these ratios within population catchment areas. The …

Dune And Geographic Perceptions Of Today’S Artifical Intellisence Revolution, Seth T. Kannarr

The Geographical Bulletin

Today we are in the midst of an artificial intelligence (AI) revolution. As generative AI tools like ChatGPT, Microsoft Copilot, and Google Gemini become increasingly available and accessible for more people to use, so does the growing concern for the ethics of their use and future consequences of this technology by geographers and the general public. By taking a look into the universe of Dune, a science fiction work that operates in a future world without AI “thinking machines”, we can gain insight into public perception and rising fear mongering regarding AI tools. As we proceed as a society, we …

Rethinking Poverty Indices: Unveiling The Unseen Realities Of India, Soumyabrata Mondal, Anand Prasad Mishra

The Geographical Bulletin

This article critically assesses India’s recent claims of rapid poverty reduction by examining the methodological, political, and data-related foundations of the Niti Aayog Multidimensional Poverty Index (MPI). It scrutinises key methodological choices such as indicator selection, weighting structures, and the dependence on NFHS (National Family Health Survey) data which only partially reflect the socioeconomic disruptions caused by the COVID-19 pandemic. Drawing on debates surrounding the Alkire–Foster framework, the essay highlights how modifications to the MPI such as the inclusion of widely achieved indicators and the exclusion of consumption expenditure may underestimate deprivation and produce overly optimistic trends. It argues that …

Prairie, Nature, Innovation: Midwest Identity Represented In State Quarters, Kady Nolte, Gillian Acheson

The Geographical Bulletin

The US Commemorative Quarter Program, begun in 1999, was wildly popular with millions of people collecting the coins. Fifty new designs were introduced for the quarter’s reverse that intended to represent each state’s unique history and identity. These coins are a piece of material culture that can be studied to understand how they represent place identity, specifically state and regional identity in the US Midwest. In this study, quarters were examined using content analysis to understand how each design represented its state. Coins were studied individually and then wholistically to identify commonalities shared within the Midwest. Three themes were identified …

Changes In Land, Ocean, Atmospheric Parameters Associated With The 2025 Myanmar (Mw 7.7) Earthquake, Feng Jing, Akshansa Chauhan, Ashwani Raju, Ramesh P. Singh

Mathematics, Physics, and Computer Science Faculty Articles and Research

Multiple parameters associated with the land, atmosphere, and ocean were analyzed to study short-term and immediate pre-earthquake changes associated with the 28 March 2025 Myanmar earthquake (Mw 7.7). Anomalous clear-sky outgoing longwave radiation (ClrOLR) and trace gases (CH₄, CO, and O₃) were detected within two months prior to the mainshock. Vertical changes at different pressure levels suggest a possible underground source. High-temporal-resolution observations of the infrared brightness temperature and surface air pressure revealed short-lived fluctuations shortly before the earthquake, which may reflect localized stress adjustments and surface latent heat flux release during the final stage of earthquake preparation. In the …

An Assessment Of Historical Planning Processes And Greenspace Distribution (1975–2024): A Case Study Of Portland, Oregon, Usa, Quadri Olatunbosun Taiwo, Vivek Shandas, Damilola Emmanuel Oluyege

Geography Faculty Publications and Presentations

The Portland study examined past planning regulations and greenspace distribution over the period of fifty years, with particular attention given to neighborhood differences between invested and non-invested neighborhoods. This exploratory study examined spatial greenspace using Normalized Difference Vegetation Index (NDVI) imagery. We tested the study hypothesis using the GIS Ordinary Least Squares (OLS) regression test to predict how key sociodemographic characteristics affect the provision of greenspace in non-white disinvested neighborhoods. The key findings suggested a consistent pattern of greenspace inequality, heavily shaped by historically disadvantaged ethnic status. Areas with higher non-white populations may have significant less greenspace (p < 0.001). Although median household income had a minimal negative impact, educational attainment showed a slight positive correlation. We employed multidisciplinary theoretical frameworks such as historical institutionalism, urban political ecology, and environmental justice. The study illustrated how historical decisions may have established path dependencies that are currently perpetuating greenspace inequalities. Policy solutions advocate for integrating restorative justice principles and rigid enforcement of 3-30-300 greenspace equity legislation to offset these long-term disparities.

Housing Affordability Analysis Of Hillsborough County, Fl, Usa – Quantitative And Geographical Analysis Using Spatiotemporal Data, Bomin Koh

USF Tampa Graduate Theses and Dissertations

Housing affordability assessments rely on the 30 percent income method and generalized linear regression (GLR)-based hedonic price modeling. Both provide broad insights but fail to capture spatial heterogeneity in affordability challenges. This study upgrades housing affordability assessment approaches by incorporating the residual income method and Geographically Weighted Regression (GWR). The primary objective of this study is to determine whether methodological improvements, residual income method and GWR, yield significantly different results and provide a more accurate and spatially adaptive understanding of affordability dynamics in Hillsborough County, Florida.

The 30 percent income method is widely used and classifies households as cost-burdened if …

A Review Of Satellite-Derived Terrestrial Evapotranspiration: Theories, Methods And Products, Yunjun Yao, Jiquan Chen, Joshua B. Fisher, Changliang Shao, Yuanbo Liu

Biology, Chemistry, and Environmental Sciences Faculty Articles and Research

Accurately estimating terrestrial evapotranspiration (ET), the second-largest hydrologic flux in the terrestrial water cycle, is vital for understanding global water and carbon exchanges. It is difficult to measure and estimate terrestrial ET at regional and global scales. Satellites have provided us an effective tool to estimate regional and global terrestrial ET in recent decades. In this article, we provide a comprehensive review of the basic theoretical foundations, methods and products of satellite-derived terrestrial ET. The basic theoretical foundations for estimating terrestrial ET are the Monin–Obukhov similarity theory (MOST) and other budding theories (e.g., Maximum entropy production theory, and generalized Hamilton …

Settler Colonialism: A Case-Study Analysis Of Dam Infrastructure In The American West, Kassidy Haynes, Carrie Mott

The Cardinal Edge

In 17^th-century North America, a number of world powers began extensive colonial efforts to stake a claim on territories and their resources. Settler colonialism in the United States followed a distinct track to the west compared to that which occurred in the east following this initial land-grab. Because infrastructure preceded some formal, highly concentrated settlement in the western United States, this region experienced the oppression of settler colonialism in distinct manifestations. Namely, the physical imposition of construction projects such as dams established early dynamics of differential power and control between the federal government and the diverse array of …

Analyzing The Climate-Growth Response Of Hemlock Species In Tight Hollow, Daniel Boone National Forest, Kentucky, Usa, Jacob G. Brown

The Cardinal Edge

Kentucky’s (KY) local climate is facing uncertainty as the influence of climate change pushes hydrological variation to its extremes. Proxy-based data can be used to better understand this variation by analyzing past climatic conditions. Tree rings provide valuable proxy data on an annual to sub-annual resolution that can be used to create climate reconstructions. However, the state of Kentucky lacks high temporal and spatial resolution datasets for accurate climate reconstruction analysis. Climate-sensitive tree species and locations must be identified and evaluated within Kentucky to further enhance these datasets to a higher resolution. Our research objective is to analyze the climate-growth …

A Distributed Model For Undergraduate Education In Environmental Remote Sensing: Increased Student Interest In Science And Sense Of Science Identity And Belonging, Gregory R. Goldsmith, Monae Verbeke, Jeremy Forsythe, Joshua B. Fisher

Biology, Chemistry, and Environmental Sciences Faculty Articles and Research

"We present results from a new open-access course in satellite remote sensing of the environment that uses evidence-based, active learning pedagogy to train the next generation of interdisciplinary scientists The course, called Observing Earth from Above, teaches students how to access, visualize, and communicate satellite remote sensing data from NASA’s ECOSTRESS instrument to address a variety of environmental challenges. The resources focus on follow-along tutorials for students and also include recorded lectures and interviews with remote sensing scientists."

Ecomusicological Representation Of Climate Change And Environmental Sustainability In Selected Bongo Fleva Lyrics In Tanzania, Auson N. Wincheslaus

Journal of Humanities and Social Sciences

This article critically explores how Bongo Fleva’s lyrics engage with environmental themes; and the interrelationship between nature and culture in the context of the Anthropocene. The data were purposively sampled from YouTube via content analysis, from which 50 Bongo Fleva songs were listened to, and only 10 environmentally-themed songs were analysed. Then, the selected songs were subjected to transcription (from oral to written form), translation (from Kiswahili into English), and close reading and textual analysis. The close reading of the selected songs focused on the employed aesthetic and rhetorical strategies, such as anthropomorphism, symbolism, antithesis, apocalyptic tones, solastalgia, rhetorical questions, …

Ecosystem-Based Flood Disaster Risk Reduction In The Little Ruaha River Basin, In The Southern Highlands Of Tanzania, Mawazo Ghambi, Tiemo Romward Haule

Journal of Humanities and Social Sciences

Ecosystem-based approach that integrates floods and environmental risk management is believed to reduce flood disaster risk while providing socio-economic and environmental benefits to floodplain occupants. This study examined the socio-economic and environmental benefits of the ecosystem-based approach in managing flood disaster risk in the Little Ruaha River Basin in the southern highlands of Tanzania. The study involved 157 participants and employed the mixed research design to collect quantitative and qualitative data. Semi-structured interviews, in-depth interviews, direct field observation and Focus Group Discussions were used to collect primary data, whereas documentary review was used to collect secondary data. Findings revealed that …

Resilience Among Smallholder Irish Potato Farmers To The Impacts Of Climate Variability In Wanging’Ombe District, Tanzania, Timotheo Bilary Ngalaga, Digna Wolfram Mlengule, Jackson Raymond Sawe

Journal of Humanities and Social Sciences

This paper examines smallholder farmers’ adaptation strategies to climate variability, and their resilience in enhancing their capacity to adopt. The data was collected from 98 heads of households using both quantitative and qualitative approaches. The methods of data collection included household surveys, focus group discussions (FGDs), in-depth interviews, and document review. The quantitative data were analysed using the IBM SPSS (Version 23), while the qualitative data were analysed using thematic analysis. The findings indicate that 69.4% of respondents reported a decrease in rainfall, while 89.8% reported an increase and fluctuations in temperature over the past 29 years. Moreover, the findings …

Climate Change Vulnerability And Adaptation Pathways: Stakeholders’ Synergies In Building Climate Resilience In The Semi-Arid Area Of Central Tanzania, Helena Elias Myeya

Journal of Humanities and Social Sciences

This article examines the perceived effect of climate change on cereal crop production and the responses of various stakeholders aimed at enhancing the resilience of smallholder farmers in semi-arid areas of central Tanzania. A total of 366 household heads, 28 participants in focus group discussions (FGDs), and 8 key informants from Bahi and Kongwa districts in Dodoma, Tanzania, were involved in this study. Both quantitative and qualitative data were gathered through a structured interview schedule, FGDs, in-depth interviews, and documentary reviews. Descriptive statistics and content analysis were used to analyse quantitative and qualitative data, respectively. The findings indicate that smallholder …