Digital Commons Network^™

The Willing And The Compelled: How Power And Place Shape Human-Bison Coexistence In Poland And The United States, Patrick Orville Kelly

All Graduate Theses and Dissertations, Fall 2023 to Present

Wildlife recovery programs depend not just on animals, but on how people feel about living with them. The degree to which people accept the disruptions wildlife brings to their lives, known as social tolerance, can determine whether a recovery program succeeds or fails, yet it remains understudied and underapplied in management plans. This dissertation studies how people in Poland and the western United States feel about living with the two living species of bison, the largest land animals in Europe and North America. In Poland, we surveyed 242 residents living at different distances from European bison habitat. Surprisingly, the most …

Wildfire And Fuel Treatments In Utah: A Practical Guide And Outcomes From An Oak-Maple Ecosystem, Annie E. Prescott

All Graduate Theses and Dissertations, Fall 2023 to Present

Wildfire is a natural part of Utah’s landscapes, but as wildfires become more extreme and communities continue to expand into wildland areas, it is increasingly important to understand how wildfires behave and how their negative effects can be mitigated. One way to reduce wildfire risks and protect life, property, and ecosystem services is through fuel treatments — actions that reduce the amount and arrangement of flammable vegetation through mechanical removal, wildland fire, or other methods.

Information on wildfire behavior and fuel treatments is abundant but often scattered, ecosystem-specific and difficult to access. In addition, most research in the Western U.S. …

Home On The Range: Where Deer And Antelope Compete With Feral Horses For Limited Resources, Katelyn Davies, Hannah B. Klugman, Kathryn A. Schoenecker, David C. Stoner

All Current Publications

Given projections for continued drought conditions in the West, a better understanding of how native wildlife respond to competition with feral horses will be critical for developing effective conservation programs in the future. This fact sheet provides information on feral horses and presents study data comparing their use of water resources with that of native wildlife.

The Organic Production Interests Of Utah's Agricultural Producers, Kynda R. Curtis, Salma Shrity, Michele Schahczenski

All Current Publications

This fact sheet provides an overview of survey respondents’ demographic characteristics and farming operation details, including acreage under production, annual gross sales, primary agricultural products, and marketing channels used. It also describes respondents’ organic production experiences, including years certified, certified acreage, and the primary motivations behind adopting organic production methods. The findings presented provide valuable insights into the characteristics, experiences, and needs of Utah producers related to organic agriculture. Extension educators, agricultural service providers, policymakers, and industry organizations can use this information to develop targeted educational programs, technical resources, and support services that address producer challenges, strengthen organic production capacity, …

Toxic Plants In Zimbabwe: The Lantana Camara Species, Frank Kapungu, Cecilia Masvingwe

Poisonous Plant Research (PPR)

Lantana camara is a major invasive plant species in Zimbabwe. Its toxic effects pose a threat to livestock production, biodiversity, and development. A survey was carried out throughout the country to investigate the distribution of L. camara in Zimbabwe and assess the extent of its spread. Identification was done by toxicologists with the support of an experienced botanist from the National Herbarium of Zimbabwe. The location of the plants was identified using a portable Garmin eTrex® 10 Handheld GPS navigation device., and the coordinates were recorded. Quantum Geographic Information System (QGIS) was used to plot the map. L. camara was …

Temporary Cattle Identification: Benefits Of Marking With Hair Bleach, Melanie Heaton, Reganne K. Briggs, Rebekah Iverson, Brooke Holgate, David Secrist

All Current Publications

Temporary identification is an important management tool for beef producers. Animals are routinely marked following breeding, pregnancy diagnosis, vaccination, treatment, sorting, shipping, and marketing so they can be quickly identified without repeated handling. Effective temporary identification improves labor efficiency, reduces animal stress, and helps ensure management decisions are applied to the correct animals. This fact sheet provides information on temporary cattle marking using hair bleach.

Impacts Of Sprouted Barley On Performance And Carcass Ultrasound Measurements In Angus-Influenced Steers During Backgrounding, Zachary C. Crump, Anthony Fernando Alberto, Bailee L. Brown, Bryce W. Roholt, Lillian L. Okamoto, Ryan A. Spurling, Robert E. Ward, Brady M. Blackett, Robert L. Harding, Sanjeewa D. Ranathunga, Kara J. Thornton

Animal, Dairy, and Veterinary Science Faculty Publications

The objective of this research was to determine the impacts of including sprouted barley (SB) in the diets of backgrounding beef steers. Angus-influenced steers (328 ± 6.59 kg) were assigned to one of four diets (n = 15/diet): a control (CON) diet, or a diet containing 5%, 10%, or 20% SB (DM basis)—replacing corn silage and some rolled barley. Individual intake and feeding behavior were monitored using Vytelle bunks. Body weight (BW) and ruminal fluid samples were collected on d 0, 30, and 60, while dry matter intake (DMI), feeding behavior, average daily gain (ADG), and gain-to-feed ratio (G:F) were …

A Brief History Of Irrigation In Utah, Burdette Barker, Reagan Wytsalucy

All Current Publications

Irrigation is essential for most crop production in Utah. With an ever-increasing population, regular drought cycles, and environmental concerns, there is a public discourse about agricultural irrigation water use. This fact sheet is an effort to step back in time to consider the heritage of irrigated agriculture in Utah, from prehistory to the present, and the modernization of irrigation driven by global industrialization and the information age.

2026 Report On The State Of Great Salt Lake Social Science, Creed Jones, Avyrlie Smith, Shae Barber, Stacia Ryder, Mufti Nadimul Quamar Ahmed, Georgie Corkery, Jennifer Givens, Anna Mcentire, Carla Trentelman, Jessica Ulrich-Schad, Kirsten Vinyeta, Bryn Watkins

Publications

Great Salt Lake (GSL) faces rapid decline that presents more than just a hydrological risk; it poses an existential social hazard. As water levels decline, ecosystems, economies, cultures, and societies face irreversible harm. Since the lake reached its lowest levels in 2022, this issue has specifically gained increased attention in Utah and beyond. Given both the degree to which human consumption contributes to the problem, and the potential risks that the drying of the lake poses for community health, social science research is a crucial for informing successful water management policies and mitigating impacts. The purpose of this report is …

Youth Gopher Trapping: Benefits For Agriculture And Youth, Melanie Heaton, Kalen Taylor

Outcomes and Impact Quarterly

Utah State University Extension partnered with local government and conservation districts to reduce agricultural losses while creating meaningful opportunities for youth. Over three years, 92 participants removed 3,941 rodents, earned $26,620, and gained practical skills through hands-on conservation work. The program shows how Extension-led partnerships can strengthen agricultural profitability, youth development, and community collaboration at the same time.

Improving Public Perceptions Of Dairy Production Through On-Farm Educational Tours, Drew Swartz, Justin Wyatt Clawson, Jaydee Gunnell, Elise Jenson, Dylan Waldron, Jenna Dyckman

Outcomes and Impact Quarterly

Utah dairy producers identified public perceptions as a top concern. Utah State University Extension partnered with Cache County organizations to offer dairy farm tours. Participants reported increased knowledge, more favorable perceptions, and stronger intentions to engage with agriculture, supporting experiential education as a means to strengthen understanding of dairy production.

Best Practices For Managing Human–Beaver Conflicts In North America: Balancing Ecological Benefits And Human Interests, Alec J. Sundelius, Jerry Altermatt, Doug Brimeyer, Derek J. Broman, Jared Duquette, Cory Mosby, Falyn Owens, Shawn Rossler, David B. Ruid, Brian F. Wakeling, H. Bryant White

Human–Wildlife Interactions Monographs

We explore the complexities of managing beaver (Castor canadensis) conflicts in North America, describing the most common approaches used by natural resource management agencies to address conflicts. We identify specific conflicts caused by beavers, the ecological benefits beavers provide, and the tools commonly used to address conflicts. We discuss regional differences in beaver management strategies, including ecosystem restoration and conflict prevention. We specifically discuss a variety of management practices including public education, land use management, trapping, translocation, exclusion, shooting, dam removal, repellants, and harvest incentive programs; we then review the challenges and benefits of these tools. We discuss …

Organic Pesticides: A General Overview, Marion Murray, Ann Mull

All Current Publications

Organic pesticides are naturally occurring, nonsynthetic, or minimally processed substances that control unwanted organisms in the environment. Categories include insecticides, herbicides, fungicides, and miticides.

Utah Vegetable Production Guide (5th Edition), Nick Volesky, Marion Murray, Amelia Olds, Bridger Carey

All Current Publications

This guide, written by a collection of Utah State University (USU) Extension faculty and specialists, provides information on general Utah vegetable production, soil, nutrient, and water management, integrated pest management practices, and pesticides. The included chapters cover various vegetable crops, including brassicas, cucurbits, leafy greens, potatoes, legumes, onions, root crops, sweet corn, and solanaceous crops.

Software Defined Swarms, Nathan Benz, Scott Miller, Jeff Huang, Sonny Hwang, Todd Sarshad, Edmund De La Cruz, Thomas Magesarcher

Small Satellite Conference

The Starling Extended Mission has demonstrated the transformative potential of software-defined architectures in multi-spacecraft swarms. Building on the original Starling mission, which validated autonomous coordination and networking among small satellites, the extended phase focused on adaptability—updating onboard payload software and software-defined radios (SDRs) to enable entirely new experiments without hardware modifications. This capability signals a new approach: spacecraft swarms can evolve post-launch to meet emerging scientific and operational objectives. 

Central to this extension was the deployment of new software enabling two-way ranging and “reverse GPS” source identification using raw radio frequency (RF) signals. Traditionally, ranging and navigation rely on pre-integrated …

Esa Scout Hydrognss Early Mission Results, Martin Unwin, Alex Da Silva Curiel, Ben Stern, Jean-Pascal Lejault, Nazzareno Pierdicca

Small Satellite Conference

The ESA Scout HydroGNSS mission demonstrates a new generation of GNSS reflectometry (GNSS R) capabilities for hydrological climate monitoring from small satellites. HydroGNSS measures soil moisture, freeze–thaw state, inundation, wetlands and above ground biomass by exploiting both traditional incoherent Delay Doppler Maps (DDMs) and several innovative signal types not previously available from spaceborne GNSS R missions. Early in orbit results confirm successful acquisition of signals from Galileo, dual polarisation measurements, coherent complex channel data and reflections at the second GNSS frequency (L5/E5a). These enhanced measurements exhibit stronger than predicted performance and are expected to significantly improve retrievals of climate relevant …

Herding Cubecats: Challenges And Lessons Learned From A Student-Led Cubesat Organization, Matthew Verbryke, Samuel Kohls, Nathan Nguyen, Michael Carovillano, Donghoon Kim

Small Satellite Conference

1. What is CubeCats?

CubeCats is a student-led technical engineering organization founded in 2015 at the University of Cincinnati (UC) with the mission of providing its members with hands-on, educational experience in space systems engineering, primarily through the design, development, testing, launch, and operation of flight-worthy CubeSats and High Altitude Balloons.

CubeCats’ operating model differs significantly from many university-based satellite programs:

• The organization is entirely managed and run by students, the majority of whom are undergraduates (UC faculty and staff serve primarily in an advisory role)
• The organization is entirely volunteer-based, with no direct integration into coursework or on-campus research …

The Effects Of Space On Pharmacology And Traditional Medicine: A Review Of Current Literature And Its Potential Impacts On Space Therapeutics, Pratyush Majumdar

Small Satellite Conference

Astronauts in space commonly take medicine for sleep disorders, muscle aches, and other miscellaneous conditions. These medications are taken under the assumption that they will work in space comparable to their effect on Earth, but mounting evidence is emerging to demonstrate that this is not the case. Using the principles of pharmacokinetics and pharmacodynamics, there are many physiological changes that alter how a drug is processed, changing their therapeutic effect. As mission times get longer, there is a heavier need to understand these changes and compensate for them in order to keep astronauts safe.

New Frontiers In Diagnosing Equine Lameness, Hyrum Hoopes, Karl Hoopes

All Current Publications

Lameness is one of the most common and expensive health problems seen in horses. Modern technology allows veterinarians to look beneath the surface. Tools such as artificial intelligence (AI), computed tomography (CT), magnetic resonance imaging (MRI), digital radiography (X-rays), nuclear scintigraphy, ultrasound, and positron emission tomography (PET) give clearer, more detailed pictures of what’s happening inside the horse’s leg. Each technology offers different advantages, from identifying uneven movement to revealing hidden damage within bones, joints, or soft tissues. When combined with veterinary visual evaluation, they help pinpoint the cause of lameness faster and more accurately than ever before.

Mechanical Design Of A 100-Chipsat Suborbital Deployer For The Descent Mission, Richard Zheng, Ocean Saric, Will Kully, Henry Wolf, Peter Nguyen, Sarah Cooper, Christopher Draikiwicz, Adam Yonas, Joshua Umansky-Castro, Mark Lohatepanont, H. Todd Smith

Small Satellite Conference

DeSCENT (Demonstration of Suborbital ChipSats Ejected from New Shepard Test Flight) aims to deploy 100 ChipSats –gram-scale spacecraft– from Blue Origin’s New Shepard launch vehicle. Led by students of the Cornell University Space Systems Design Studio in collaboration with JHU-APL, the experiment characterizes ChipSat dispersion and free-fall kinematics from the K´arm´an line while exploring their potential for distributed sensing for atmospheric science. This paper outlines the design, integration, and test of the ChipSat deployer to be mounted on the New Shepard propulsion module in coordination with the JHU-APL JANUS payload. Details are shared on the overall mechanical design, driven by …

Determining The Feasibility Of A Habituation Assessment In Managed Red Wolves, Emily C. Lynch, Joseph W. Hinton, Jennifer B. Nagashima, Curtis Malott, Natalie J. Johnson, Emily Haering, Robin Petersen, Allison Johnson, Julie K. Young

Wildland Resources Faculty Publications

For species extirpated from the wild, ex situ breeding programs are essential for providing the individuals necessary for re-establishing wild populations through reintroductions. However, repeated exposure to humans under managed care may reduce wariness and alter behavioral responses in ways that are maladaptive after release. Although some pre-release behaviors reflect natural responses essential for survival and reproduction, others may result from habituation to humans and increase the risk of conflict, recapture, or mortality following translocation. These risks underscore the need for behavioral assessments to help identify appropriate candidates for release. However, because the assessments themselves require some exposure to humans, …

Heartland Virus Preclinical Research Project, Brian B. Gowen

Funded Research Records

No abstract provided.

Is Hanpp A Stressor Of Bird Species Richness?, Kaeli Mueller, Gustavo Ovando-Montejo, Christopher Lant

Environment and Society Student Research

One of the leading drivers of biodiversity loss is land use change due to the ever-increasing demand for food, livestock feed, biofiber, and biofuel. The concept of human appropriation of net primary production (HANPP) was developed to measure the impact that humans have on the environment by accounting for biomass removed from the environment in the form of crops, timber, and grazing. The species–energy hypothesis is an established ecological hypothesis postulating that greater species diversity is correlated with higher levels of energy from plant productivity; this can be measured as net primary production minus harvested HANPP or NPP_ecological. …

Enhancing Algae Biofilm Quantity And Value Through Controlled Light Intensity For Treatment Of Municipal Anaerobic Digestor Effluent, Joshua D. Wintch, Ronald C. Sims

Biological Engineering Student Research

Rotating algae biofilm reactors (RABRs) have been shown to remove nutrients from wastewater and to cultivate algae for bioproducts. Another key variable in RABR technology for cultivating microalgae biomass is light intensity. The goal of this study was to address a gap in the design and operation of algae biofilm reactors by analyzing the effects of light intensity on biomass quality and quantity, chemical precipitation of phosphorus, and phosphorus uptake into biomass. This study utilized a triplicate laboratory-scale experiment with PAR intensities from 10 to 2000 µmol m⁻²·s⁻¹. Municipal wastewater anaerobic digester effluent (ADE) was utilized …

Cross-Reactivity Of 15 Jev Antigen-Directed Rabbit Antisera With Three Clinically Important Jev Serogroup Members: Wnv, Mvev, And Slev, Sang-Im Yun, Young-Min Lee

Animal, Dairy, and Veterinary Science Faculty Publications

Japanese encephalitis virus (JEV), the prototype member of the JEV serogroup within the genus Orthoflavivirus (family Flaviviridae), is closely related to West Nile virus (WNV), Murray Valley encephalitis virus (MVEV), and St. Louis encephalitis virus (SLEV). To characterize antigenic cross-reactivity within this group, we evaluated 15 region-specific rabbit antisera, previously generated against nearly the entire JEV protein-coding region, by immunoblotting whole-cell lysates from BHK-21 cells infected with WNV, MVEV, or SLEV, with JEV included as a reference. Six antisera (α-E^N-term, α-NS2B, α-NS3^N-term, α-NS3^C-term, α-NS5^N-term, and α-NS5^C-term) robustly recognized homologous …

A Social-Ecological Systems Approach To Integrating Outdoor Recreation And Black Bear Management: A Michigan Case Study, Megan Dorothy Stone

All Graduate Theses and Dissertations, Fall 2023 to Present

Outdoor recreation sits at the intersection of social and ecological systems, representing one of the primary ways in which humans directly interact with their natural environment. As a result, outdoor recreation management must balance providing high-quality outdoor recreation opportunities while simultaneously protecting natural resources in protected areas. Balancing these concurrent management goals has become more challenging in recent years as participation in outdoor recreation increases. This can lead to numerous negative impacts on the environment, such as wildlife disturbance. In this study, I explore the challenges and opportunities for collaboration between managers of outdoor recreation and black bears in the …

The Evolution Of Hymenopteran Recombination Rates, Timothy John Delory

All Graduate Theses and Dissertations, Fall 2023 to Present

Individuals of some species mix their DNA frequently when producing sex cells, while others do so much less. Hymenopterans (ants bees and wasps) are especially useful for understanding this variation for several reasons. They show large differences in this frequency of shuffling, or rate of recombination, have well-studied genomes, and vary widely in how they live and reproduce. I capitalized on these features examines how recombination rates have evolved in this group at the trait, and gene level.

First, I revisited long-standing ideas about why recombination rates differ among these species, incorporating more than a decade of new research. This …

Fibrous Protein Biomaterials: Characterization Of Solitary Bee Silk And Cocoons, And Development Of Recombinant Hagfish And Bee Silk Materials, Oran Wasserman

All Graduate Theses and Dissertations, Fall 2023 to Present

This dissertation explores two complementary aspects of fibrous protein biomaterials: the characterization of understudied naturally occurring solitary bee silk and cocoons; and recombinant expression and biomaterial formation of recombinant hagfish intermediate filaments (rHIF) and a single Osmia lignaria Say (Hymenoptera: Megachilidae) silk protein. Some solitary bee species, which make up about 75% of all bee species, spin silk to construct protective cocoons during development. Despite the importance of silk and cocoons to the solitary bees' life history, their properties remain largely unexplored. This dissertation presents a novel method for isolating and testing individual silk fibers without interfering with the development …

Bridging Animal Production And Human Nutrition: How Production Ecology Shapes The Nutritional Quality Of Terrestrial Animal Foods And Human Omega-3 Status, Joseph Vinod Varre

All Graduate Theses and Dissertations, Fall 2023 to Present

The question at the center of this dissertation is simple: does the way food is produced change the quality of the food itself in ways that matter for human health? Across a series of studies on bison meat, eggs, and human dietary intervention, the answer was yes. This work began with a broad look at the modern food system and the nutritional consequences of industrialized diets. In particular, it focused on the growing imbalance between omega-6 and omega-3 fatty acids in the Western diet. This balance matters because omega-3 fats support heart, brain, and immune health, and diets high in …

Viability Assessment Of Bovine Embryos: A Public Dataset And Deep Learning Baselines, Erfan Khayyati

All Graduate Theses and Dissertations, Fall 2023 to Present

Improving the success rates of cattle breeding is essential for sustainable agriculture, global food security, and high-quality livestock production. Currently, determining whether a lab-grown bovine embryo is healthy enough for a successful pregnancy requires highly trained experts to manually evaluate days of continuous time-lapse video footage. This process is not only incredibly time-consuming but also highly subjective; human reviewers often suffer from visual fatigue when tracking subtle, microscopic cellular changes over a seven-day period, leading to significant disagreement among even top experts on an embryo’s true potential. Furthermore, assessing bovine embryos is notoriously difficult due to their dark, lipid-dense cellular …