Digital Commons Network^™

Effect Of Agroecological Feeding Systems Of Dairy Cattle On The Nutritional Composition Of Milk, Sree Bhavya Immadi

All Graduate Theses and Dissertations, Fall 2023 to Present

How food is produced can influence both its nutritional quality and its impact on the environment. In recent years, regenerative (agroecological) farming practices have gained attention for their potential to improve soil health, biodiversity, and the nutritional value of foods. In dairy production, these practices often involve growing more diverse forage crops, reducing soil disturbance, and relying less on monoculture-grown feed rations. However, there is still limited real-world evidence showing how these practices affect the nutritional composition of milk produced on commercial dairy farms.

This dissertation explores how regenerative feeding and feed production practices influence the nutritional quality of milk, …

Effects Of Serum And Commercial Serum-Free Media On Development Of In Vitro Produced (Ivp) Embryos In Cattle, Kyla Miller

All Graduate Theses and Dissertations, Fall 2023 to Present

Serum-containing media has been shown to increase incidence of large offspring syndrome and to alter gene expression, protein synthesis, and cell signaling. These factors together can result in increased pregnancy loss when combined with assisted reproduction technologies. However, there are very few direct comparisons of commercial serum-free media (IVF Bioscience™) and serum-containing media on both IVF and cloned embryo development in cattle. The aim of this study was to determine the role of serum in oocyte maturation and subsequent embryo development. Three culture systems, including in vitro maturation (IVM) and in vitro culture (IVC), were used in this study. Both …

Gradient Based Optimization Methods For Robust Learning And Biomedical Signal Modeling, Jarrod Mau

All Graduate Theses and Dissertations, Fall 2023 to Present

This dissertation explores how modern artificial intelligence techniques can be used to better understand complex biological data. Specifically, it develops new machine learning based methods and applies them to two important biomedical problems: analyzing brain signals and studying protein behavior.

The first part of the work introduces a new machine learning approach designed to improve how computers classify structured data. Traditional neural networks are powerful but can sometimes generalize poorly. This research proposes a method that combines the flexibility of neural networks with the reliability of ensemble techniques, leading to more robust and accurate predictions across different types of datasets. …

Exploring The Correlation Between Malnutrition And Food And Nutrition Insecurity In Inflammatory Bowel Disease, Heather Burr

All Graduate Theses and Dissertations, Fall 2023 to Present

Inflammatory Bowel Disease (IBD) may increase the risk of malnutrition because of nausea, vomiting, diarrhea and restrictive eating. In addition, patients with IBD may experience food and nutrition insecurity. Therefore, we conducted an online survey to assess risk of malnutrition and food and nutrition insecurity among adult patients with IBD in outpatient and community settings. Patients were recruited between July and December 2025, aiming to reach adults in the Rocky Mountain Region diagnosed with IBD. Data collected included demographics, health-related factors, risk of nutrition insecurity, risk of food insecurity, and barriers and facilitators to dietary management of IBD.

Fifty-seven patients …

Exploring The Experiences Of Adult Children Of Parents With Addiction: A Qualitative Support Group Approach, Brooke Stanton

Undergraduate Honors Capstone Projects

Adult children of parents with addiction often grow up having to navigate emotional instability, inconsistent caregiving, and long-term relational impacts that continue into adulthood. Many individuals report limited access to supportive care and spaces where they can share their stories. This capstone project addresses the gap by designing and facilitating a support group specifically for adult children of parents to build connection and healing. Through this qualitative study, participant feedback, and analysis, this project examines how structured peer support can create meaningful change for this population. The following paper outlines the development of the group, the theoretical foundations that guided …

A Mixed Methods Analysis On The Effect Of Active Learning On Extraneous Cognitive Load Within Undergraduate Statistics Courses, Michelle Brady Rich

All Graduate Theses and Dissertations, Fall 2023 to Present

Students enrolled in college-level statistics courses often lack the foundational skills of statistical concepts which can potentially lead to increased mental load. Additionally, the curricula within undergraduate classes often focus on traditional theory with little student exploration or participation. This combination of increased mental load and passive lectures can be explored through the Cognitive Load Theory (CLT). CLT examines how new information enters the limited capacity of an individual’s working memory and how exceeding this capacity affects the ability to transfer the information to long-term memory. This research focused on the extraneous cognitive load, or the load imposed by the …

Climate Change-Related Effects On Carbon Emissions And Net Ammonification Across Lowland To Upland Soils From A High-Latitude Coastal Ecosystem, Jenna M. Ross, Karen H. Beard, Katharine C. Kelsey, Matteo Petit Bon, A. Joshua Leffler

Wildland Resources Faculty Publications

Warming, sea-level rise, and changing herbivory patterns are affecting ecosystem processes in northern coastal soils, including carbon and nitrogen cycling, although their combined effects are poorly understood. We studied the impact of these changes in a full-factorial microcosm experiment using four distinct soil types from the Yukon-Kuskokwim Delta of western Alaska. Soil was collected from three coastal wetlands, which differ in flooding frequency and use by migratory geese, and one rarely-flooded upland tundra used by geese in late summer. Microcosms containing these soils were incubated for 16 weeks at 10°C or 18°C, with or without three short-term floods, and with …

Beyond Beneficial Margins: Four Mechanisms Linking Border Vegetation To Pest Dynamics, Jorge F. M. Cardoso, Fabiane M. Mundim

Biology Student Research

Vegetated field borders are widely promoted as tools to enhance biodiversity and strengthen biological control in agroecosystems. However, their role in pest dynamics remains conceptually fragmented and empirically inconsistent. Here, we develop a unified framework explaining how crop border vegetation influences pest populations through four interlinked ecological mechanisms. First, borders act as host reservoirs and selective filters, providing alternative hosts and overwintering habitat that enhance pest persistence across crop cycles. Second, borders modify pest colonization dynamics by shaping movement, aggregation, and host-location behavior at crop edges. Third, borders restructure multitrophic networks, simultaneously supporting natural enemies, alternative prey, vectors, and pathogens, …

Quantifying Evapotranspiration From The Wetlands In The Peripheral Area Between The Most Downstream Stream Gages And The Open Water Body Of The Great Salt Lake, Motasem S. Abualqumboz, David G. Tarboton

Publications

Study region: The eastern peripheral area between the most downstream stream gages and the open water body of the Great Salt Lake (GSL), located in northern Utah within the semiarid western United States (US). 

Study focus: As GSL levels decline, the eastern peripheral area is expanding, exposing former lakebed, much of which has transitioned into natural and managed wetlands. Evapotranspiration (ET) from these wetlands consumes water that would otherwise reach the open-water lake body, yet these losses remain poorly quantified and directly affect the GSL water balance. This study compares a water-balance-based ET estimate for the wetlands in the peripheral …

Creating Sustainable School And Home Gardens: Zooming Into Nature With Digital Microscopes, Rita Hagevik, Kaitlin Campbell, Kathy Cabe Trundle, Lawrence Krissek

All Current Publications

This fact sheet provides information about using digital microscopes in the garden. It discusses how they work, choosing the right digital microscope, uses in the garden, and activities. It is part of the Creating Sustainable School and Home Gardens resource sheet series from Utah State University Extension and Smart Foodscapes.

Effects Of Spatially Targeted Fertilizer Strategies On Canopy Growth Across Contrasting Tart Cherry Orchard Sites, Kurt Wedegaertner, Brent Black, Matt Yost, Grant Cardon

Plants, Soils and Climate Student Research

Variable-rate fertilization is increasingly promoted in perennial orchard systems, but its effectiveness remains difficult to predict because tree responses are often inconsistent and strongly conditioned by site-specific constraints. To address this, we evaluated soil-based and vigor-based zoning frameworks across four commercial tart cherry (Prunus cerasus) orchards representing contrasting soil conditions, canopy structures, and management histories. Within each orchard, management zones were defined using either soil apparent electrical conductivity (ECa) or satellite-derived canopy vigor. Fertilization strategies were implemented by varying fertilizer application timing among zones using split-application approaches while maintaining a constant total fertilizer rate. Tree-level canopy structure was …

Reflective Refinement Through Iterative Model Building, Idris Solola, Hillary Swanson, Sarah Schwartz, Rida Munir, Jared B. Arnell, Ravi Sinha

Instructional Technology and Learning Sciences Student Research

While research has emphasized the role of classroom discourse, hands-on demonstrations, and carefully crafted prompts in eliciting and responding to students’ ideas, there’s a need to investigate how the systematic design of modeling instruction can serve as the structure that naturally supports responsive teaching. Drawing on the knowledge in pieces (KiP) epistemology and the concept of responsive teaching, we present an instructional approach called guided reflective refinement (GRR), which guides students to articulate and examine their thinking through building and evaluating models. We analyzed middle school students’ model drafts over a 7-day unit on conservation of energy to understand the …

Considerations For Microbial Inoculation Under Dryland Stress Conditions, Benedict Odinaka Okorie

Plants, Soils and Climate Student Research

Microbial inoculants are critical for sustainable crop production in dryland agriculture. However, several limitations (drought, heat, salinity, nutrient deficiency, etc.) of drylands and soil variability limit their consistent performance. Climate, soil properties (pH, texture, etc.), and their interactions are strong filters for microbial communities, functions, and activities across multiple scales, regions, and ecosystems. This review discusses several considerations of the peculiarities of drylands that must be factored into microbial formulations and inoculations decisions. Blanket/universal microbial formulations, inoculation methods, timings, and rates generally approach microbial, plant, and soil functions in isolation. This masks the complex microbial, soil, plant, environmental interactions, and …

Evaluating The Impact Of Residential Landscape Audits Using 5-Second Water Use Data, Mahmud Aveek, Camilo J. Bastidas Pacheco, David E. Rosenberg, Jeffery S. Horsburgh, Kelly Kopp, Belize A. Lane

Civil and Environmental Engineering Student Research

We used 5-s water use data to evaluate the effectiveness of residential landscape water audits in summer 2022. Fifty-nine households in two northern Utah cities were monitored for 2–5 weeks before and 3–10 weeks after an audit. We found that the distribution of weekly irrigation volumes postaudit was statistically less than the distribution preaudit (significant at the 1.9E10-5 level). Collectively, the participants reduced their landscape irrigation water use by approximately 379,000 L per week (100,300 gal per week; 0.3 acre-feet per week). We also analyzed changes in irrigation event volume, duration, frequency, and the number of days between events at …

Fairhiveframes-1k: A Public Fair Dataset Of 1265 Annotated Hive Frame Images With Preliminary Yolov8 And Yolov11 Baselines, Vladimir Kulyukin, Reagan Hill, Aleksey Kulyukin

Computer Science Faculty and Staff Publications

In precision apiculture, the portable digital camera is a cost-effective sensor for capturing hive images or videos used to quantify different colony variables. Openly accessible, well-annotated, interoperable cell-level image datasets are still the exception rather than the norm. This shortage constitutes a major barrier to AI-driven approaches aimed at automating image-based comb analysis. In this article, we present FAIRHiveFrames-1K, a publicly available dataset of 1265 annotated hive frame images (1920 × 1080 PNG) designed to facilitate research in AI-intensive image-based comb analysis automation. The dataset, derived from a 2013–2022 U.S. Department of Agriculture–Agricultural Research Service multi-sensor research reservoir, includes 124,669 …

Irrigation Water Loss And Recovery In Utah, Bradley S. Crookston, Troy Peters, Matt Yost, Burdette Barker

All Current Publications

When deciding which irrigation systems to adopt, permit, or promote, it is important to consider how their efficiency and losses affect the water balance of Utah’s watersheds and drainage basins. Irrigators have no control over precipitation and only limited control of surface waters entering and leaving the state, as most of those are controlled by legal agreements. However, Utah’s water managers, elected officials, and water users can consider how surface water flows and groundwater storage is affected by using more efficient irrigation systems. Sprinkler, surface, or drip irrigation systems each have trade-offs in irrigation application efficiency, cost, and other factors. …

Small Grain Forage Production Guide, Matt Yost, Megan Baker, Earl Creech, Justin Wyatt Clawson, Michael Pace, Kalen Taylor, Cory Farnsworth, Jacob Hadfield, Corey Ransom, Steven Price, Claudia Nischwitz, Clara Anderson

All Current Publications

Small grain forages can be used for pasture, hay, and silage and have become more common in cropping systems in Utah and the western United States. The most common small grain species used for forage production are barley, oat, rye, triticale, and wheat. Although there has been an increase in the use of small grains for forage production in the western U.S., little published information is available on best management practices for small grain forage production. This guide will discuss the key production practices for small grains used for forage.

Curriculum Subcommittee Agenda April 2, 2026, Utah State University

Educational Policies Committee

• Approval of Minutes - March 5, 2026
• R401 - Program Proposals 
• Semester Course Approval Reviews
• Other Business
• Adjourn: 3:00 pm

Screening Biostimulants To Enhance Early Growth Of Tomato (Solanum Lycopersicum L.) Under Water-Limited Conditions, Claudia Garrido-Ruiz, James Frisby, Amita Kaundal, Youping Sun, Milena Maria Tomaz De Oliveira

Plants, Soils, and Climate Faculty Publications

Biostimulants offer a sustainable strategy to improve plant growth and stress resilience, particularly under limited water availability. We evaluated seven biostimulant treatments, including beneficial bacteria, mycorrhizal fungi, seaweed extract with humic acid, and their combinations, on early growth and physiological responses of tomato (Solanum lycopersicum L.) under well–watered and drought-stressed conditions. Plants were assessed before and after a seven-day controlled drought period using a range of morphological and physiological traits, including height, effective quantum yield of PSII (Φ_PSII), stomatal conductance (g_s), and leaf pigment profile. Results showed that microbial treatments that included Bacteria + …

Organic Management Of Pillbugs And Sowbugs In Strawberries And Other Fruits, Briger Carey, Marion Murray, Emilie Demard, Jennifer R. Reeve

All Current Publications

Pillbugs and sowbugs are collectively known as isopods that typically feed on soil organic matter, but under certain conditions, they can be a pest of many young plants and berries. This fact sheet reviews identification, life cycle, damage, and organic management strategies for pillbugs and sowbugs.

Microplastics As Physical Hubs Amplifying Antiobiotic Resistance Under Mixed-Contaminant Selection In Wastewater Systems, Liyuan Hou

Spring Runoff Conference

Microplastics (MPs) are tiny plastic particles within the range of (0.1 mm to 5 mm) in size

Balancing Water Needs In Walker Basin, Peter Stanton

Spring Runoff Conference

Walker Lake 

Supported 50% of Mineral County economy 

Traditional homeland of Walker River Paiute Tribe (Agai Dicutta) 

World-class fishery

Annual Loon Festival

Recombinant Hagfish Intermediate Filament Proteins Enable Neural Culture Substrates That Promote Neurite Extension And Reduce Oxidative Stress, Justin Jones, Kristin Durrant

Browse all Datasets

This dataset supports the production, characterization, and biological validation of a novel recombinant hagfish intermediate filament (rHIF) protein functionalized with spider silk motifs (rHIF-alpha-GRGGL). The data demonstrates a scalable bioprocess resulting in a 7.76 g/L yield, high structural alpha-helicity (77.2%), and significant support for N2a cells.

The Do-It-Yourself Guide To Backyard Drip Irrigation, Jaydee Gunnell, Taun Beddes, Burdette Barker

All Current Publications

This guide promotes efficient backyard drip irrigation as a vital strategy for water conservation in Utah, the third-driest state in the U.S. It explains evapotranspiration (ET), drip system components, and provides formulas to calculate a plant’s water needs. The guide provides practical advice on converting traditional irrigation systems to drip systems, particularly in flower beds and around shrubs and trees. By implementing drip irrigation, homeowners can contribute to water conservation while enhancing the health of their landscapes.

Western Conifer Seed Bug (Leptoglossus Occidentalis), Emilie Demard

All Current Publications

This fact sheet provides information on the western conifer seed bug, including native range, life cycle, plant hosts, symptoms and damage, and management options.

Black Medic (Medicago Lupulina) Identification And Control In Residential Landscapes, Michael Caron, Taun Beddes, Corey Ransom

All Current Publications

Black medic (Medicago lupulina) is an herbaceous winter or summer annual broadleaf landscape weed. This fact sheet provides a weed description and describes suppression and control options.

Curriculum Subcommittee Minutes, March 5, 2026, Utah State University

Educational Policies Committee

• Approval of Minutes - February 5, 2026
• Program Proposals
• Semester Course Approval Reviews
• Other Business
• 2025-2026 Curriculum Totals
• Draft Graduate Certificate Policy
• Adjourn: 3:01 pm

Educational Policies Committee Agenda March 5, 2026, Utah State University

Educational Policies Committee

• Approval of Minutes - February 5, 2026
• Subcommittee Reports
• Curriculum Subcommittee
• Academic Standards Subcommittee
• General Education Subcommittee
• Center for Civic Excellence
• Other Business
• Adjourn: 4:00 pm

Habitat And Conditions Of Poisoning Of Toxic Plants In North America, Michael H. Ralphs

Poisonous Plant Research (PPR)

This paper presents a list of important poisonous plants in North America that are toxic to both livestock and humans. The aim of this paper is to present information to help reduce the risk of poisoning. The paper emphasizes the particular plant communities in which these plants grow. Some of these plants are endemic, growing on specific soils or specific ecological sites. Others are distributed more broadly throughout a vegetation type. A few of the plants are widespread, ranging over several broad ecosystems. In diagnosing poisoning, it is important to know what plants are expected to grow in the communities …

Curriculum Subcommittee Agenda March 5, 2026, Utah State University

Educational Policies Committee

• Approval of Minutes - February 5, 2026
• R401 - Program Proposals
• Semester Course Approval Review
• Other Business
• Draft Graduate Certificates Policy
• Adjourn: 3:00 pm