Geography Commons^™

A Pan-Amazonian Dataset Integrating 20 Years Of Respiratory, Cardiovascular, Zoonotic And Vector-Borne Disease Cases And Landscape Changes, Julia Rodrigues Barreto, Florencia Sangermano, Ana Filipa Palmeirim, Farah Carrasco-Rueda, Benoit De Thoisy, Adrian González-Chaves, Maria Eugenia Grillet, Victoria Morpurgo-Dest, Catalina Zuluaga Rodríguez, Nerida Nadia H. Valero, Paula R. Prist

Geography

As anthropogenic pressures continue to impact the environment, human health is expected to be subsequently affected. This dataset provides a comprehensive view of the trends and burden of infectious diseases, along with environmental metrics, across the Amazon biome between 2000 and 2019. The dataset includes health indicators for respiratory, cardiovascular, and major zoonotic and vector-borne diseases (Chagas disease, hantavirus, cutaneous leishmaniasis, visceral Leishmaniasis, rickettsial diseases, and malaria), compiled as annual case counts at the municipal level. The innovation of this dataset lies in its unprecedented assembly of data for this transboundary biome—much of it requiring ground-level collection beyond available in …

Real-Time Malaria Detection In The Amazon Rainforest Via Drone-Collected Edna And Portable Qpcr, Yin Cheong Aden Ip, Luca Montemartini, Jia Jin Marc Chang, Andrea Desiderato, Nicolás D. Franco-Sierra, Christian Geckeler, Mailyn Adriana Gonzalez Herrera, Michele Gregorini, Meret Jucker, Steffen Kirchgeorg, Martina Lüthi, Elvira Mächler, Frederik Bendix Thostrup, Guglielmo Murari, Marina Mura, Paola Pulido-Santacruz, Florencia Sangermano, Tobias Schindler, Claus Melvad, Stefano Mintchev, Kristy Deiner

Geography

Zoonotic malaria risk at human-wildlife-environment interfaces requires surveillance that integrates signals from reservoirs, vectors and the environment. We coupled a drone-based environmental DNA (eDNA) canopy swabbing approach with portable quantitative PCR (qPCR) to detect Plasmodium DNA in situ during a 24-h field exercise in the Amazon rainforest. Drone-lowered sterile swabs into the canopy, which were then extracted and subjected to a multiplex pan-Plasmodium assay targeting five human-infecting Plasmodium species (limit of detection 0.2 parasites μL−1). Of 12 samples (10 canopy swabs, 2 field blanks; 13 total runs including repeats), one canopy swab amplified in duplicate (Ct = 28.7 and 29.23), …

A Gis Method To Analyze Trajectories Of Gross Changes Through Multiple Temporal Resolutions With An Application To Brazilian Soybean Cultivation, Thomas Mumuni Bilintoh, Robert Gilmore Pontius, Gustavo Oliveira, Julia Shimbo

Geography

Our manuscript presents Trajectory Analysis, which is a novel method to characterize patterns of gross changes during a time series of raster maps. This manuscript is our first article to elaborate on concepts and features of Trajectory Analysis that are necessary to analyze more than two time intervals. The method computes up to eight trajectories and three components of change: Quantity, Exchange, and Alternation. Quantity is the absolute net change between the two time points that bound the temporal extent. Exchange is the additional gross change between the same two time points. Alternation is the additional gross change that derives …

Mountain Communities During A Time Of War: A Case Study Of The Hutsul Region In The Carpathian Mountains Of Ukraine, Pavlo Rybaruk

Electronic Theses and Dissertations

This thesis investigates the ethno-ecological technologies employed by the Hutsul people within the highland agrarian economy of the Carpathian Mountains. Over centuries, the Hutsuls have developed ethno-ecological technologies that maintain ecological integrity while supporting community livelihoods.

The study addresses three primary research questions: What are the most important ethno-ecological technologies of the Hutsul highland economy? How might these traditional ethno-ecological practices be applied to economic, agricultural, and tourism development in the Hutsul region? How might these traditional ethno-ecological practices be combined with contemporary approaches to encourage sustainable development in the region?

The research explores the devastating impact of the Russian …

Detecting Prescribed Fire, Haying And Grazing Events Via Remote Sensing To Create Grassland Disturbance Landcovers For The Ring-Necked Pheasant (Phasianus Colchicus), Megan Amy Baldissara

Dissertations and Doctoral Documents, University of Nebraska-Lincoln, 2023–

This dissertation developed disturbance detection models to fulfill the need for remote sensing landcover products describing grassland structure. The use of landcover products derived from remote sensing is increasing over time in pheasant (Phasianus colchicus) research. Such landcover, however, does not provide relevant pheasant structural habitat information (Chapter 1). Pheasants require tall, high-density grassland for nesting, tall grassland with medium density for brood rearing, and tall grassland for wintering. Time since disturbance can serve as a proxy for structure, as it shapes vegetation by removing biomass and resetting succession. Disturbance is easier to detect than structure with current …

Defending The Homeland: An Archaeoethnodemographic (Aed) Analysis Of Population Dynamics And Settlement Patterns In The Navajo Dinétah, Ad 1720–1745, Kurt Mantonya

Dissertations and Doctoral Documents, University of Nebraska-Lincoln, 2023–

This dissertation presents an innovative archaeoethnodemographic (AED) analysis of Navajo population dynamics during the Middle Period (AD 1720−1745) of the Gobernador Phase in the Dinétah, the ancestral Navajo homeland in northwest New Mexico. During this critical quarter-century, intensified Ute and Comanche slave-raiding and Spanish military expeditions forced the Diné to abandon traditional dispersed settlement patterns in favor of defensive aggregation around fortified pueblitos—small masonry defensive structures built on boulder-tops and mesa-rims throughout the region.

The study employs an AED framework that systematically integrates archaeological site analysis, ethnographic household organization data, historical documentation, and demographic modeling to reconstruct population dynamics during …

Global, Continental, And Local Scale Paleoenvironmental Reconstruction Methods For Interpreting The History Of Miocene North America And The Great Plains, Willow Hue Nguy

Dissertations and Doctoral Documents, University of Nebraska-Lincoln, 2023–

The Miocene of North America is characterized by dynamic changes in herbivore communities, habitat composition, and global climate. Long-term cooling and drying trends influenced large changes in floral and faunal communities. The Great Plains, North America shifted from closed-canopy biomes to open-canopy biomes with C3-grasses to biomes with C4-grasses. This shift affected the herbivore communities as browsing-adapted ungulates were replaced by grazing-adapted ungulates. Much focus has centered on the Great Plains, so it is not well understood how the changes in biomes compare to other regions of North America. The models used for vegetation density indicate open-canopy biomes since at …

Local Problems, Global Solutions? Making It Rain In Hong Kong C. 1890-1930, Fiona Williamson

Research Collection College of Integrative Studies

The late nineteenth to early twentieth century saw a small but dedicated rise in experimental rainmaking. The possibility that humanity might one day be able to control the weather – especially to alleviate drought – was very attractive to governments and private investors. The late nineteenth century was an era of scientific optimism and a number of rainmaking experiments across the world had brought the potential for weather control out of the realms of discourse and literature and further into tangible near-future science. There has been a small but thorough historiographical literature on this subject, focusing largely on American, British, …

Navigating Ai-Nature Frictions: Autonomous Vehicle Testing And Nature-Based Constraints, Prerona Das, Orlando Woods, Lily Kong

Research Collection College of Integrative Studies

In cities, the application of Artificial Intelligence (AI) is being directed towards transforming different aspects of urban life. These applications take material form in urban spaces, with autonomous vehicles (AVs) providing a prominent example. AI systems rely on large volumes of data on their surroundings to refine the algorithms and enhance the accuracy of prediction for operational efficiency and safety. However, such algorithmic learning and execution can present challenges when dealing with the unpredictable, complex, and dynamic aspects of urban spaces. Nature is a paradigmatic example of such unpredictability, because natural phenomena usually defy consistent patterns and precise data-based modelling. …

The Pluralistic Natural Capital Values Of A Tropical City, Adrienne Gret-Regamey, Et Al.

Research Collection College of Integrative Studies

Nature in cities is essential for human well-being. Quantifying and valuing the goods and services provided by nature to city dwellers is missing in tropical contexts. Yet, as cities worldwide face similar challenges, understanding the services provided by tropical urban ecosystems becomes imperative for effective management. Here, we present the first Natural Capital Assessment of a tropical city, unveiling three critical insights. Firstly, we demonstrate the vital reliance of a developed tropical city on nature, particularly for climate change mitigation through regulating services. Secondly, we identify intact natural areas as Singapore’s most valuable assets, stressing the significance of the quality …

Physics-Guided Strategies For Enhancing Neural Networks Trained With Limited Data, Jose Guadalupe Perez Zamora

Open Access Theses & Dissertations

Deep neural networks excel at a wide range of processing tasks across various disciplines. However, the quantity and quality of data significantly impact network performance. In specialized domains, high-quality datasets are often difficult to gather, interpret, and curate for effective learning. Few-shot learning techniques, including transfer learning, data augmentation, and meta-learning, have emerged to address these constraints.

We propose three physics-guided strategies for enhancing neural networks trained with limited data: (1) combining existing models like LSTMs with Physics-Informed Neural Networks through two-branch architectures that merge their outputs, (2) deriving custom physics-informed data augmentation algorithms to expand limited datasets, and (3) …

Ädeeja: Origem Dos Alimentos Cultivados E Práticas Alimentares Ye’Kwana, Viviane Cajusuanaima Rocha (Povo Ye’Kwana)

Tipití: Journal of the Society for the Anthropology of Lowland South America

O artigo explora a ligação entre a cosmologia do povo Ye’kwana e suas práticas alimentares tradicionais, com base no conceito central de ädeeja, que representa os alimentos cultivados. Esse termo abrange mais do que a ideia de comida — ele carrega uma dimensão cosmológica e relacional, conectando humanos, espíritos, plantas e o território. Está ligado a uma rede de relações entre humanos, espíritos vegetais e saberes ancestrais. Representa a comida como elo com o cosmos, reforçando a interdependência entre os seres. Minha análise mostra que, para os Ye’kwana, alimentar-se é um ato cósmico, enraizado em narrativas, cantos e relações …

Prosperando Con Otros: Paisajes Multiespecie Y Producción De Alimentos En El Caribe Colombiano, América Larraín

Tipití: Journal of the Society for the Anthropology of Lowland South America

Este artículo es resultado de un proyecto de investigación asociado a la producción de alimentos en una comunidad arhuaca en las tierras bajas de la Sierra Nevada de Santa Marta. Se describen algunas experiencias de la implementación del proyecto, destacando los aspectos relacionados con la articulación entre las técnicas derivadas de la agroacuicultura integrada y la cosmovisión arhuaca. Con este artículo, se espera contribuir a la reflexión sobre cómo las cosmologías indígenas se materializan en prácticas concretas, que en este caso específico podrían pensarse en el marco de lo que se ha llamado el Buen Vivir.

As Donas Do Fogo: Parentesco, Práticas Alimentares E Luta Pela Terra Entre Os Kaiowa E Guarani, Lauriene Seraguza Olegário E Souza

Tipití: Journal of the Society for the Anthropology of Lowland South America

Os Guarani e Kaiowa apresentam uma relação sofisticada entre as práticas alimentares e a recuperação de territórios tradicionais em Mato Grosso do Sul (Brasil), protagonizada cotidianamente por mulheres indígenas. As mulheres guarani e kaiowa consideram o fogo como uma referência da casa de residência de um núcleo familiar e a palavra se apresenta como potência em seu fazer político. Elas são as “donas do fogo”. Compartilhando suas próprias substâncias corporais e acumulando aprendizados adquiridos no cuidado com pessoas mais velhas da parentela, as mulheres reúnem um conjunto próprio de conhecimentos e ocupam posição de reconhecido destaque no parentesco guarani, habilitando-as …

The Matter Of Production And Forms Of Sharing: Transformations Of Food Economies In Lowland South America, Clarice Cohn, Diego Madi Dias, Adriana Athila

Tipití: Journal of the Society for the Anthropology of Lowland South America

This special issue of Tipití presents a critical examination of ‘food economies’ and their transformations within Indigenous communities in Lowland South America. Stemming from seminal ideas in its Anthropology that directly or indirectly discuss ‘food’ (and much of what goes along with it), this edited volume focuses on the materiality of relations as a strategic lens for understanding contemporary Indigenous lives and their transformations, according to how they are perceived by Indigenous peoples themselves and others such as health care professionals and the state. The articles explore how Indigenous foodways—from acquisition to consumption, including sharing and distribution—reveal key aspects …

Fermentative Processes Of The Agricultural Food System In The Upper Rio Negro: Ethnographic Notes On Feminine Knowledge, Intention, And Agency In The Production Of Fermented Beverages, Lorena França

Tipití: Journal of the Society for the Anthropology of Lowland South America

This article examines the fermentative processes at the core of the agricultural food system of the Upper Rio Negro, northwestern Amazon, highlighting women’s technical and social agency in the production of fermented beverages such as caxiri. Based on ethnographic fieldwork conducted among Baniwa and Tukano families between 2018 and 2019, the study explores how fermentation constitutes not merely a biochemical transformation of matter but a sociotechnical language through which women express intention, alliance, and distinction. The paper analyzes in detail two cases of caxiri preparation, showing how women’s manipulation of manioc, tubers, saliva, and utensils configures embodied knowledge transmitted …

El Sistema Nainu De Agricultura Familiar: Semillas De La Memoria Social Y De La Autonomía Alimentaria En Gunayala (Panamá), Lenín Alfonso Morales, Geodisio Castillo, Diego Madi Dias

Tipití: Journal of the Society for the Anthropology of Lowland South America

La presente investigación examina el sistema agroforestal familiar (nainu) del pueblo gunadule como un tejido de resistencia social, espiritual y ecológica frente a los procesos históricos y actuales de desposesión territorial y colapso climático. A partir de un enfoque etnográfico basado en métodos participativos y epistemologías indígenas, se analizan las prácticas, conocimientos y relaciones que sostienen la autonomía alimentaria y la regeneración del territorio en Gunayala. El estudio documenta los impactos de la transferencia tecnológica, la expansión de semillas híbridas y transgénicas, identificados como amenazas centrales para la continuidad de los cultivos tradicionales y la salvaguardia de semillas …

Comer Como O Inimigo: Violência, Transformações E Persistências Na Economia Alimentar Wari’ (Amazônia Ocidental), Maurício Soares Leite

Tipití: Journal of the Society for the Anthropology of Lowland South America

Examinam-se aspectos e percursos do sistema alimentar dos Wari’, povo indígena da Amazônia Ocidental, em um intervalo de duas décadas, mas também contemporaneamente. Trata-se de um cenário marcado por transformações, com dinâmicas que incluem a monetarização de sua economia alimentar e uma crescente articulação com o mercado regional, cujo pano de fundo é uma trajetória histórica de relações com não indígenas e com o Estado brasileiro, marcada por modalidades diversas de violência, que se atualizam permanentemente. Apontam-se os impactos dessas transformações no repertório alimentar wari’, nos modos de uso da terra e de outros recursos e na reciprocidade alimentar, entre …

Harnessing Hyperspectral Imaging And Deep Learning For Terrestrial Habitat Mapping In Arid Landscapes: A Case Study In Saudi Arabia, Ali Elgendy, Hesham Morgan, Brandon Tran, Rejoice Thomas, Tamer Ismail, Yehya Kh. Shehadeh, Ahmed Elgharib, Ahmed Abdullah Al-Dughairi, Ali El Muburak, Khaled Allam Harhash, Hesham El-Askary

Mathematics, Physics, and Computer Science Faculty Articles and Research

Arid ecosystems remain under-mapped at actionable scales despite their ecological importance. Decision makers lack reliable, high-resolution habitat maps in drylands to prioritize protection and target restoration. This research integrates spaceborne hyperspectral imaging from the Environmental Mapping and Analysis Program (EnMAP) with deep learning semantic segmentation models to produce an updated level of habitat classification based on the International Union for Conservation of Nature (IUCN) for part of the Imam Turki bin Abdullah Royal Reserve, Saudi Arabia. Using ground control points and the full EnMAP spectral cube without band selection, U-Net and DeepLabV3+ architectures were each implemented with VGG19 and ResNet-101 …

Mobility Disrupted: Geospatial Analysis Of Accessibility On The Mbta’S Orange And Red Lines Using Generalized Linear Poisson Regression, Maura Forde

Geography and the Environment: Graduate Student Capstones

This research analyzes the spatiotemporal relationship between explanatory variables and the frequency of downed elevator/escalator alerts at train stations on the Massachusetts Bay Transportation Authority’s (MBTA) Orange and Red lines. The data is from 2023. The null hypothesis is that there is no spatiotemporal pattern to the frequency/distribution of alerts. Generalized Linear Poisson Regression is used to model relationships across four time periods – the entire 2023 calendar year, Spring (January-April), Summer (May-August), and Fall (September-December). Results indicate that the null hypothesis can be rejected for all variables in Summer and Fall models but cannot be rejected for all variables …

From Red To Green: Using Gis To Examine Colorado’S Inequitable Housing Patterns In Urban Greenspace Accessibility, Jessica Howard Karr

Geography and the Environment: Graduate Student Capstones

Urban greenspaces provide numerous benefits to the mental and physical health of nearby people who access these locations for physical recreation, social interaction, and contemplation. Discriminatory urban planning policies from the past, such as redlining, have ensured that greenspace access is not always equitable for communities with diverse racial and socioeconomic compositions. This project utilizes Geographic Information Systems (GIS) to determine relationships between tree cover canopy, greenspace percentage within a census tract, and greenspace accessibility within a graded census tract system based on demographics and historic redlining locations in the Colorado cities of Denver, Colorado Springs, and Pueblo. The results …

Box Elder County Tourism Adventure Passport: Pilot Program Geospatial Analysis, Evaluation, And Next Steps., Janessa Knotts

Geography and the Environment: Graduate Student Capstones

The Box Elder County Tourism Office created the Tourism Adventure Passport Program and launched a pilot program in July 2025. GIS was used to engage and encourage visitors and locals to visit some or all sites listed and submit information, including GPS points, to participate in the program. To promote tourism in Box Elder County, the program highlights well known sites like the Golden Spike National Historic Park, along with other, less-known sites. The pilot program data was used to create a geospatial analysis and an analysis of the number of visits each site received and number of visitors were …

Archaeological Predictive Meta-Modeling In Pre-Columbian Mexico, Peter Stamm

Electronic Theses and Dissertations

Archaeological Predictive Modeling stands firmly as an important tool for Archaeologists to predict undiscovered sites from civilizations all across the globe. While powerful, this methodology is not without its own set of qualms. Striking a balance between pure a data-driven approach while also observing leading expert theories can be a complicated task. Going further, deciding on the specific domain of features to emphasize or overlook can be a challenge within itself, as one misstep can drastically change the output of model, sometimes for the worst. In addition, creating models that can expose their reasoning process can be rather difficult to …

Rural County International Immigrant Population Growth In Nevada, 2020-2024, Yiselle Olivas Ruiz, Anirudh Polagani, Mohit Pande, Olivia K. Cheche, William E. Brown Jr.

Demography

This fact sheet presents 2020-2024 data on international immigrant population growth across 17 Nevada counties.The Daily Yonder report, “International Immigrants Drive Rural Population Growth,” uses U.S. Census data to highlight international immigration patterns for all metropolitan and nonmetropolitan (rural) counties across the United States. This fact sheet highlights data on 13 nonmetropolitan counties in Nevada: Churchill, Douglas, Elko, Esmeralda, Eureka, Humboldt, Lander, Lincoln, Lyon, Mineral, Nye, Pershing, White Pine. This fact sheet also includes data on four metropolitan counties in Nevada: Carson City, Clark, Storey, and Washoe.

Analyzing The Role And Impact Of Energy Resources On The South China Sea Dispute, Adam Opp

Liberty University Journal of Statesmanship & Public Policy

The South China Sea is a critical but contested body of water that has been the source of much international debate and focus. The sea is a strategic maritime route and one of the most important waterways for regional and global trade. The South China Sea features rich natural resources such as fisheries and hydrocarbons, especially unknown amounts of oil and natural gas remaining untapped throughout the sea. Geological surveys estimate extremely lucrative quantities of oil and natural gas in the South China Sea, which drives the conflict, as nations with competing territorial claims seek to control not just the …

Intro To Arcgis - Creating And Navigating Maps Using Esri Arcgis, J. Morgan Rowe-Morris, Elizabeth Bittner

Day Family Research Lab Workshop Series

This ArcGIS workshop offers an introduction to the fundamentals of Geographic Information Systems using the ArcGIS pro platform.

Shape: Spatial Health And Population Estimator, Emma M. Von Hoene, Aanya Gupta, Hamdi Kavak, Amira Roess, Taylor Anderson

Annual Symposium on Biomathematics and Ecology Education and Research

No abstract provided.

Modeling Social Isolation: A Data-Driven Index Function Design And Implementation, Jeremis N. Morales Morales, Carmen Caiseda, Phyllis Muniu, Joshua Atsu, Folashade B. Agusto

Annual Symposium on Biomathematics and Ecology Education and Research

No abstract provided.

[Project Insight] Spatio-Temporal Analysis Of Domestic Violence In Puerto Rico, Phyllis Muniu

Annual Symposium on Biomathematics and Ecology Education and Research

No abstract provided.

Analyzing Urban Space-Use Of White-Tailed Deer (Odocoileus Virginianus), Szandra A. Péter, Zehidul Hussain, Solena Kronstedt, Amira Roess, Jennifer Mullinax, Travis Gallo, Taylor Anderson

Annual Symposium on Biomathematics and Ecology Education and Research

No abstract provided.