Digital Commons Network^™

Comparing Machine Learning, Deep Learning, And Reinforcement Learning Performance In Culex Pipiens Predictive Modeling, Wei Yin, Sanad H. Ragab, Michael G. Tyshenko, Teresa Patricia Feria-Arroyo, Tamer Oraby

School of Mathematical & Statistical Sciences Faculty Publications

Several machine learning (ML) and deep learning (DL) methods have been used to predict the presence of species in classification problems. Another set of methods, called reinforcement learning (RL), has been used in training agents to perform various tasks, but not in predicting species distribution. Culex pipiens (Diptera: Culicidae), commonly known as the common house mosquito, is a globally distributed species prevalent in temperate and subtropical regions. They serve as a primary vector for West Nile Virus (WNV), a mosquito-borne pathogen that affects humans and other animals. The study objective is to compare the performance of logistic regression, random forest …

Hydration Strategies In Ultra-Endurance Running: A Narrative Review Of Programmed Versus Thirst-Driven Approaches, Shawn C. Wierick, Rosie I. Perez, Xiujing Zhao, Brendon P. Mcdermott

Health, Human Performance and Recreation Faculty Publications and Presentations

Background/Objectives: Ultra-endurance running (UER) presents unique hydration challenges due to prolonged duration, variable terrain, environmental extremes, and gastrointestinal limitations. Athletes often use either programmed fluid intake (PFI), which prescribes fluid volumes based on estimated sweat rate, or thirst-driven fluid intake (TDFI), which relies on internal cues. This review examines the effectiveness and limitations of each strategy in the context of UER performance and safety. Methods: A narrative review was conducted using a targeted selection of peer-reviewed studies. Both laboratory- and field-based research were included to evaluate the physiological rationale, practical feasibility, and outcomes associated with PFI and TDFI. A total …

Emerging Policies On Marine Biodiversity Beyond National Jurisdiction Governance, Jessie Neta Jeffrey

World Maritime University Dissertations

No abstract provided.

Understanding The Effects Of Real-Time Head Position Feedback On Postural Sway In Terms Of Changes In Underlying Deterministic And Stochastic Dynamical Processes, Steven J. Harrison, Benjamin De Bari, Ryan Poutre, Jeffrey M. Kinsella-Shaw

College of Humanities and Sciences Faculty Papers

Our perceptual systems detect information about how our body is moving relative to the surrounding environment. Such information is essential to our ability to maintain upright standing balance. Real-time postural feedback systems are technologies that appear to enhance our ability to detect information about the movements of our body, and as a consequence improve our capacity to control the posture of our body. Here we examine a system in which real-time measurements of head position were "felt" as changes in the intensity of vibration of tactors in a headband. Using this system, participants were able to stabilize their body posture, …

From Deforestation To Regeneration: Modeling The Potential Of Chakra Agroforestry To Restore Edaphic Invertebrates And Soil Health In The Ecuadorian Amazon, Annika Vikstrom

Ecuador: Comparative Ecology and Conservation

Tropical edaphic invertebrates lie at the intersection of three historically understudied domains: tropical habitats, soil ecosystems, and terrestrial invertebrate biodiversity (Boyle et al. 2024; Lugo et al., 2024). Approximately 80% of tropical invertebrates remain undescribed, leaving major gaps in the understanding of how land-use change and climate change may affect their diversity and ecological function. The Amazon Basin, one of the world’s most biologically and culturally diverse regions, is increasingly threatened by land use change and deforestation. While agriculture is the second main driver of forest conversion in the basin, Indigenous Agroforestry systems such as Kichwa Chakras in the Ecuadorian …

Why Antimicrobial Resistance Pipelines Fail On Cyanobacteria: What Custom Databases Reveal Instead, Maeve Musselman

Australia: Rainforest, Reef, and Cultural Ecology

Harmful cyanobacterial blooms (C-HABs) are increasing as climate change and nutrient enrichment create favorable environments for cyanobacteria. Although bloom-forming cyanobacteria can persist in extreme and polluted conditions, and antimicrobial resistance (AMR) and metal resistance (MR) play significant roles in bloom persistence and response to treatments, both remain understudied. Currently, most AMR detection pipelines use clinical databases developed for human pathogens which routinely fail to detect resistance genes in environmental microbes. This study evaluated AMR and MR profiles in seven freshwater cyanobacteria using both clinical AMR pipelines (CARD, ResFinder, ARG-ANNOT) and a custom environmental resistance database specifically designed to include metal …

Piping Up: Exploring Body Length And Density Metrics Of Dominant Pipefish Species Urocampus Carinirostris Across Spatially Distinct Sites In Moreton Bay, Qld, Leah Esser

Australia: Rainforest, Reef, and Cultural Ecology

The morphologically unique family Syngnathidae faces high levels of anthropogenic pressures in Moreton Bay Marine Park where seagrass beds, habitat to many syngnathid species, are increasingly vulnerable. Among these species, the pipefish Urocampus carinirostris is especially prevalent, making it a strong candidate as an indicator and model species. Threats to seagrass, including pollution and nutrient overload, largely stem from sources on the bay’s western banks. This study aimed to conduct a preliminary investigation of how U. carinirostris size, density, and site-level pipefish diversity compares across locations, with particular attention to differences between eastern and western sites. An exploratory comparison between …

Trophic Niche Overlap Between Native And Alien Fish Species: A Challenge For The Aquatic Ecosystems, Rana Manzoor Ahmad, Abdul Majid Khan, Mariya Basharat, Muhammad Rizwan, Neelam Shahzadi, Muhammad Imran

Journal of Bioresource Management

The different physiological and biological challenges are introduced not only on land but also in aquatic ecosystems due to increasing climatic changes and human needs. One of these challenges is the introduction of invasive alien species to the native freshwater ichthyofauna. These species not only disturb the ecological balance of the native water bodies but can also be a vector for parasitic diseases. The current study is designed to disclose the trophic niche overlap among exotic (Cyprinus carpio and Oreochromis mozambicus) and indigenous fish species (Labeo calbasu and Cirrhinus mrigala) from Head Baloki (Ravi River), Punjab, …

Environmental Controls On Planktonic Community Variability And Ecosystem Responses In The Romanian Black Sea, Cristina Tabarcea, Elena Bișinicu, George-Emanuel Harcotă, Aurelia Țoțoiu, Oana Vlas, Elena Pantea, Luminita Lazar

Turkish Journal of Zoology

This study examines the structure, distribution, and environmental influences on planktonic communities in the Romanian Black Sea, based on data collected from Black Sea national monitoring stations in June 2023. We assessed the qualitative and quantitative composition of phytoplankton, microzooplankton, mesozooplankton, macrozooplankton, and ichthyoplankton, alongside key environmental factors such as temperature, salinity, dissolved oxygen, and nutrient concentrations (nitrite, nitrate, ammonium, phosphate, and silicate). The results highlight the dominance of dinoflagellates within the phytoplankton community, while copepods constitute the most abundant mesozooplankton group. Species from the Codonellidae family mainly represent microzooplankton diversity, while macrozooplankton is largely dominated by the scyphozoan Aurelia …

Species Delineation, Phylogeography And Conservation Of Temperate Perches (Actinopterygii: Percichthyidae) From An Endemism And Climate Change Hotspot, Michael P. Hammer, David L. Morgan, Stephen J. Beatty, Mark G. Allen, Peter J. Unmack, Sean J. Buckley, Luciano B. Beheregaray, Jon Murphy, Mark Adams

Research outputs 2022 to 2026

Context: The south-western corner of Australia is a biodiversity hotspot that includes a freshwater fauna with a high proportion of endemic species. The temperate perches comprise nearly half of the obligate freshwater fishes of the region, representing important components of local ecosystems and are of significant conservation concern. Aims: Provide a spatially comprehensive molecular genetic assessment of species boundaries and major substructure for all local members of the family to better understand the interplay of ecology and environment across a common landscape. Methods: Nuclear markers (allozymes) and matrilineal (cytb) datasets were generated to infer genetic groupings and any instances of …

Initial Changes In Ground Beetle (Carabidae: Coleoptera) Assemblages After Creating Gaps Of Varying Sizes In Mature Northern Hardwoods Forests In Wisconsin, Robert A. Haack, Robert E. Acciavatti, Toby R. Petrice, Robert L. Davidson, Terry F. Strong

The Great Lakes Entomologist

Managers of northern hardwood forests in the Great Lakes region create gaps in the forest canopy of various sizes during harvesting to achieve different silvicultural objectives. Single-tree harvesting favors recruitment of shade-tolerant tree species by creating small gaps in the canopy, whereas group selection creates larger gaps that can favor shade-intolerant tree species. We evaluated changes in carabid beetle abundance and diversity in harvest-created gaps of five sizes (gap diameters of 6, 10, 20, 30, and 46 m) and uncut forests in northern Wisconsin where sugar maple (Acer saccharum) was the dominant tree species. Gaps were cut during …

Systematics And Phylogeography Of Mundochthonius Chamberlin, 1929, In The Pacific Northwest (Chelicerata, Pseudoscorpiones), Amanda Rai Montoya-Cowan

Dissertations and Theses

Understanding the processes that drive genetic divergence and species formation is central to evolutionary biology. Invertebrates with low dispersal ability, such as pseudoscorpions, are especially prone to cryptic diversification due to their occupancy of niche microhabitats and sensitivity to landscape barriers. Despite their ecological roles as predators and bioindicators, pseudoscorpions remain one of the least studied arachnid groups, with limited taxonomic resolution and few integrative studies. This research focuses on the genus Mundochthonius in the Pacific Northwest, particularly M. pacificus, a morphologically conserved species whose true diversity and distribution remain poorly understood.

Field surveys guided by a GIS-based habitat …

Prairie Soundscape, Rebecca J. Romsdahl

The Cicadian

This series of soundscapes represents dawn and dusk. Morning Cacophony was recorded at 6:00 AM, May 2023 on the Tympanuchus Reserve near Crookston, MN — a rare remnant prairie never plowed. Voices of the prairie: sedge wren, bobolink, greater prairie chicken, sandhill crane, red-winged blackbird, clay-colored sparrow. Night Chorus was captured at 2:00 AM, June 2024 on restored grassland at Bluestem Preserve near Moorhead, MN — once farmland, now thriving prairie. Nocturnal symphony: whip-poor-will (song + warning call), coyotes, treefrogs, grasshopper sparrow, soft wind, gentle rain.

Gene Expression Of Anthocyanin Pigments In The California Native Plant Leptosiphon Parviflorus: Interactions Between Flower Color Morphology And Abiotic Stressors, Weston Gonor

Master's Theses

For plants to survive in harsh conditions imposed by abiotic stressors, they must develop mechanisms of adaptation. One of the common types of adaptation seen in plants is the production of anthocyanin pigments, which have been shown to protect plants from UV radiation, metabolic stress, and drought. In this study, we used the flower color polymorphic species Leptosiphon parviflorus to investigate the role of anthocyanin pigments in protecting plants from abiotic stress. To accomplish this, RNA samples were taken from flower, leaf and root tissue of different flower color morphs of Leptosiphon parviflorus (Polemoniaceae) grown in high magnesium and water …

Origin And Maintenance Of The Andean Bird Fauna, Elkin A. Tenorio

Dissertations, Theses, and Capstone Projects

The origin and maintenance of the tropical montane diversity have been evaluated over multiple decades using various techniques and perspectives. Despite major progress in understanding phylogenetic relationships, diversification patterns, distributional data, and general ecology in the Andean biota, large gaps in our understanding remain, particularly in the synthesis across scales. To fill these gaps, I aimed to explore patterns and processes that underlie species diversification in birds of the tropical Andes of South America by combining different approaches using phenotypic, phylogenetic, and genomic data in multiple temporal and spatial scales.

In the first chapter, I examined the macroevolutionary patterns of …

Low Economic Level And The Risk Of Overweight Among Indonesian Junior And Senior High School Students, Ariyanto Nugroho, Purwo Setiyo Nugroho, Amarin Yudhana, Sri Sunarti

Kesmas

Overweight and obesity among Indonesian adolescents have emerged as a pressing public health issue, reflecting global trends. This study examines the relationship between economic status and overweight prevalence among junior and senior high school students in Indonesia, using secondary data from the Global School-based Health Survey (GSHS). This study analyzed data from 9,977 students aged 11–18 years through a cross-sectional design and binary logistic regression, adjusting for dietary habits, physical activity, and sedentary behavior. Overall, 14.7% of students were overweight; the prevalence was notably higher among low-income students (27.4%) compared to high-income groups (14.2%). Students from lower economic backgrounds were …

Assessment Of Bat Species (Mammalia: Chiroptera) In Canubas Cave, Kibawe, Bukidnon, Philippines, Jurriel Mari D. Alce, Jasmine Rouida M. Abenes, Leo Gabriel Cervantes, Matthew Eli K. Llacer, Von Zhyrus P. Oche, Ian Jay P. Saldo, Jhovel Roy D. Calo

Sinaya: A Philippine Journal for Senior High School Teachers and Students

Bats, flying mammals, are essential to ecosystems, playing vital roles in pollination, seed dispersal, and insect control. Despite their ecological importance, no prior bat research exists for Canubas Cave, Kibawe, Bukidnon. This study aimed to assess the bat species at the site, documenting their morphometric data, diversity and richness indices, and conservation statuses. A purposive sampling design was implemented by setting up mist nets inside and outside the cave. A total of 13 individuals were identified, comprising three species from two families: Rousettus amplexicaudatus and Eonycteris spelaea (family Pteropodidae, fruit bats), and Miniopterus schreibersii (family Miniopteridae, bent-winged bats). Based on …

The Distribution Of Some Soil Arthropods In A Manipulated Ecosystem, James H. Shaddy, James W. Butcher

The Great Lakes Entomologist

[Excerpt] Soil cultivation practices and agricultural utilization affect soil animal populations in various ways. Gisin (1955) and Schalk (1968) concluded that the effect was minimal. Others observed a deleterious effect (Karg, 1956; Sheals, 1956; Strebel, 1957; Aleinikova and Utrobina, 1975; Edwards and Lofty, 1975). However, some soil animals appear to be benefited (Aleinikova and Utrobina, 1975; Edwards and Lofty, 1975). The effects of cultivation and many other factors have been discussed thoroughly in reviews by Christiansen (1964), Burges and Raw (1967), Butcher, et al. (1971), Ghilarov (1975), and Wallwork (1976).

Invertebrate Predators Of Michigan Lepidoptera, M. C. Nielson

The Great Lakes Entomologist

[Excerpt]

For many years this author has been actively collecting Michigan Lepidoptera and generally observing insects in the field. Almost every season some predation of Lepidoptera by insects and their allies is seen. Unfortunately, many early observations went unrecorded in my field notebooks, but since the late 1950's I have made notations of these interesting encounters.

The Effect Of An Invasive Species (Lantana Camara) And A Fast-Growing Herb (Acanthus Pubescens) On The Plant And Animal Communities In Kibale National Park, Uganda, Kathleen Bufka

Theses and Dissertations

Fast-growing plant species, like Lantana camara and Acanthus pubescens, could threaten biodiversity in Kibale National Park, Uganda. I surveyed plants and wildlife in areas where these plants were frequently encountered compared to those areas where they are infrequent. I found mixed results based on plant traits and the animals considered. My findings support management efforts on these two species to prevent forest degradation.

A Simple Guide For Describing Soils, 2nd Edition, Angela Stuart-Street, Nicolyn Short Dr, Paul Galloway, Noel R. Schoknecht

Natural resources published reports

Soils are enormously diverse and can be very confusing to understand and talk about. This simple guide for describing soils helps to identify the most important parts of a soil profile and provide an easy way to understand and explain what you see. It gives you a step-by-step guide of what soil properties to describe and how to describe them, along with the tools to make basic soil classifications. The soil descriptors help you to identify the soil type and aid in assigning a simple and standardised name to the soil. While this guide is designed to link with a …

Morphological Correlates Of Limaxivory In Contia (Serpentes: Dipsadinae) Compared To Related Taxa Carphophis And Diadophis, Lauren A. Houstoun

All Graduate Theses and Dissertations, Fall 2023 to Present

Differences in the skull and musculature of snakes can often be linked to their diet. Snakes that eat snails and slugs have evolved independently at least four times. Several skull features of the skull have already been reported in snakes that eat snails, specifically those in the genus Pareas and some Dipsadini. Among those features are a shorter, more compressed snout and, in some species, asymmetry of the lower jaw. However, little attention has been paid to snakes that specialize only on slugs (limaxivores). Unlike the snail-eating members of the Pareidae and Dipsadini, limaxivores lack the morphological traits associated with …

Investigating The E74-Mediated Regulation Of A Gata Factor In Aedes Aegypti Mosquitoes, Jacklyn Marie Estrada

Open Access Theses & Dissertations

The mosquito species Aedes aegypti has a significant impact on public health as a vector for multiple pathogens. Its ability to transmit deadly diseases, including Yellow Fever, Dengue Fever, and Zika, emphasizes the urgency of understanding its reproductive biology. In female mosquitoes, reproductive success hinges on obtaining a vertebrate blood meal, which triggers vitellogenesis - the synthesis of yolk protein precursors (YPPs) necessary for egg development. Without a blood meal, female Ae. aegypti remain in a state of previtellogenic arrest, where the YPP gene vitellogenin (Vg) is repressed by a type of transcriptional factor, GATAr (AaGATAr) (Attardo et al., 2003). …

Factors Influencing Swift Fox Reintroduction Success To Fort Belknap Reservation, Montana, Dana Nelson

All Dissertations

Reintroductions are an important conservation tool for reestablishing wildlife populations, and studying the factors influencing reintroduction outcomes is important to improving success rates over time. Swift fox are a small canid native to the short- and mixed grass prairies of western North America that have experienced severe population declines due to habitat loss and poisoning in the late 1800s. While swift fox now occupy approximately 40% of their historic range, reintroduction to northern Montana may promote the species’ long-term persistence, encourage connectivity in an existing range gap, and return species to areas where it is culturally significant. We studied the …

Effects Of Sediment Composition On Spartina Alterniflora And Juncus Roemerianus Productivity In Coastal Virginia: A Thin-Layer Sediment Placement Experiment, Caitlin Hemphill

Biological Sciences Theses & Dissertations

Climate change poses a major threat to the health of estuaries and their coastal wetland systems. The Chesapeake Bay’s coastal salt marshes are at high risk of inundation due to sea-level rise and land subsidence. Restoration techniques for maintaining coastal marsh resistance to sea-level rise are being developed and refined, with thin layer placement (TLP) emerging as a feasible solution in many areas of the United States. Despite TLPs use across the country, additional research is needed on species-specific responses, sediment types, and geographically focused studies in the lower Chesapeake Bay. My research addresses these gaps by combining both greenhouse …

Identification Of Crustose Coralline Algae Species In Florida And Their Ability To Induce Larval Settlement Of Caribbean Corals, Danielle Macias

All HCAS Student Capstones, Theses, and Dissertations

Crustose coralline algae (CCA) are a diverse, globally spread and yet poorly studied group of benthic organisms. They act as settlement cues for coral larvae, but this interaction is often species-specific, as CCA species can be either inducers or inhibitors to larval settlement and metamorphosis. Despite this importance, information on Caribbean CCA distribution, diversity, and impact on coral species is limited due to the difficulty in identifying them. In the present study, CCA samples were collected from seven different reef sites in the southeastern region of Florida’s Coral Reef and genetically identified using molecular analyses. Some of the samples collected …

Spatial Ecology And Habitat Selection Of Eastern Pinesnakes: Case Study On The Importance Of Scale In Conservation Biology, Matthew Grisnik, Alan Jones, Rachel Brubaker, Andrew M. Grosse, Scott L. Parker

Biology

Species are in decline world-wide, driven by multiple factors including habitat fragmentation. Understanding the habitat selection processes of species in these fragmented landscapes has become a focus of ecological studies and is a major component of conservation plan development. However, understanding how landscape level processes influence patterns of habitat selection is often ignored. Here we assessed the influence of landscape level processes in the habitat selection of Eastern Pinesnakes, a species in decline, within a protected area in South Carolina, USA. Over the course of a year, we tracked 8 Eastern Pinesnakes within a small protected area. Snakes exhibited seasonal …

Using Triple Oxygen Isotopes To Investigate Water Usage In Desert Ecosystems, Cloe V. Knutson

Earth and Planetary Sciences ETDs

In arid environments, maintaining water balance can be more critical for survival than obtaining food. As droughts intensify, understanding how animals manage body water is essential. Triple oxygen isotope analysis provides a novel way to trace water sources in animals, distinguishing contributions from free water, food-derived oxygen, and atmospheric O₂. We developed an equilibration method using CO₂–H₂O oxygen exchange and measured δ^’18O and Δ^’17O values via tunable infrared laser direct spectroscopy (TILDAS). Validated against traditional fluorination methods, this technique enables streamlined analysis of whole blood and plant samples. Applied to …

Integrating Belowground Recovery Into Tropical Forest Restoration Design And Monitoring, Lauren Toro, Leland K. Werden, Shalom D. Addo-Danso, Kelly M. Andersen, Sarah Batterman, Matilde M. Bragadini, Pooja Choksi, Rebecca J. Cole, Liza S. Comita, Daniela Cusack, Daisy H. Dent, Lee H. Dietterich, Joshua B. Fisher, Katrin Fleischer, Lucia Fuchslueger, Nohemi Huanca-Nunez, Janey R. Lienau, Lindsay A. Mcculloch, Ember M. Morrissey, Jennifer S. Powers, Mareli Sánchez-Juliá, Oscar Valverde-Barrantes, Anita Weissflog, Michelle Y. Wong

Biology, Chemistry, and Environmental Sciences Faculty Articles and Research

There is growing recognition that tropical forest restoration is key for sequestering carbon and enhancing ecosystem resilience. Soils, roots, and soil biota are central to ecosystem function and services, but belowground recovery is largely overlooked in restoration monitoring frameworks. Here, we outline current understanding of the links between above- and belowground recovery in tropical forests by examining how belowground properties before and after intervention influence recovery; by evaluating whether aboveground recovery can serve as a proxy for belowground dynamics; and by proposing a blueprint for monitoring dynamic soil physical (bulk density, aggregate stability), chemical (organic matter or carbon, pH), and …

The Impact Of Genetic Ancestry On Survival Outcomes In Pediatric Rhabdomyosarcoma: A Report From The Children’S Oncology Group, Ekene A Onwuka, Christina L Magyar, Bailey A Martin-Giacalone, Michael E Scheurer, Deborah A Marquez-Do, Mark Zobeck, Elizabeth G Atkinson, Erin R Rudzinski, Michael A Arnold, Donald A Barkauskas, David Hall, Javed Khan, Jack F Shern, Paul Scheet, Brian Crompton, Corinne M Linardic, Douglas S Hawkins, Rajkumar Venkatramani, Lisa Mirabello, Chad D Huff, Melissa A Richard, Philip J Lupo

Faculty, Staff and Student Publications

Emerging evidence suggests genetic ancestry may influence childhood cancer outcomes, but its impact on pediatric rhabdomyosarcoma (RMS) is unknown. We explored genetic ancestry's impact on survival among children with RMS. This multi-center observational cohort study is a secondary analysis of previously collected biobanking, genomic, and clinical data. The study included 920 individuals with newly diagnosed RMS under 40 years of age enrolled from 2005 to 2017 under the COG soft tissue sarcoma biobanking protocol D9902. The primary endpoints were (1) event-free survival (EFS), defined as the time from study enrollment to tumor recurrence/progression, secondary malignancy, or death from any cause; …