Digital Commons Network^™

Effectiveness Of Silvicultural Options In Renewal Of Trembling Aspen–Jack Pine Mixedwood Stands, 21 Years After Treatment, Rongzhou Man

Aspen Bibliography

Regenerating conifers after harvest through planting and postharvest broadcast application of herbicide is effective in ensuring the survival and growth of seedlings, but faces challenges in meeting broad social and ecological objectives of forest management. This study reports the effectiveness of alternative options in regenerating jack pine (Pinus banksiana Lamb.), 21 years after harvest of trembling aspen (Populus tremuloides Michx.)-dominated boreal mixedwood stands. The treatment options included (i) preharvest spray—aerial broadcast spray prior to harvest, (ii) postharvest partial spray—ground herbicide application in strips, (iii) partial harvest in strips, (iv) postharvest aerial broadcast, and (v) uncut reference. Twenty-one years …

Fact Sheet For Parents: What To Know About Zyn Nicotine Pouches, Aaron Hunt, Gabriela Murza, Alyssa Ferrin

All Current Publications

This fact sheet provides information about ZYN, which is a nicotine pouch becoming commonly used among youth due to social media advertising. This fact sheet will help parents understand the impact of ZYN pouches and approaches to monitor, prevent, and address use among youth.

The Utah Statesman, April 14, 2025, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

Faculty Senate Executive Committee Minutes, April 14, 2025, Utah State University

Faculty Senate & Faculty Senate Executive Committee

• Call to Order
• Approval of Minutes - March 17, 2025
• University Business
• Faculty Senate Business
• Information
• EPC Report - April 3, 2025
• Report
• Office of Equity
• Committee on Committees Annual Report
• Calendar Committee Annual Report
• Retention Annual Report
• Recruitment Annual Report
• Old Business
• New Business
• Adjourn 4:26 pm

Faculty Senate Executive Committee Agenda, April 14, 2025, Utah State University

Faculty Senate & Faculty Senate Executive Committee

• 3:00 Call to Order
• Approval of Minutes - March 17, 2025
• 3:05 University Business
• 3:20 Faculty Senate Business
• 3:35 Information
• EPC Report - April 3, 2025
• 3:40 Report
• The Office of Equity
• Committee on Committees Annual Report
• Calendar Committee Annual Report
• Retention Annual Report
• Recruitment Annual Report
• 4:05 Old Business
• 4:10 New Business
• President-Elect Nominations
• Format & Responsibilities - 2025-2026 Faculty Senate Meetings
• Faculty Senate Executive Committee Membership
• Adjourn: 4:30 pm

James Buttle Review: Bed, Banks And Beyond: River Flood Dynamics, Ellen Wohl, Julianne Scamardo, Ryan R. Morrison

Watershed Sciences Faculty Publications

Floods are amplified and attenuated by features and processes across spatial scales, defined here as flood dynamics. We review and synthesise these influences at the catchment, river network and reach scales as a means of integrating understanding of controls on flood dynamics and identifying key questions that arise because of differences in techniques of investigation and disciplinary emphases between spatial scales. Catchment-scale influences include catchment area, topography, lithology, land cover, precipitation, antecedent conditions and human alterations such as changing land cover. Network-scale influences on flood dynamics include network topology, longitudinal variations in the geometry of successive river corridor reaches, lakes …

Naloxone: A Lifesaving Tool Against Opioid Overdose, Aaron Hunt, Gabriela Murza, Amy May, Jenna Hawks, Alyssa Ferrin

All Current Publications

Naloxone is a medicine that can temporarily stop an opioid overdose by blocking the effects of opioids on the brain, which can save a person's life. This fact sheet explains why naloxone is important and safe, how to recognize the signs of opioid overdose, and how to obtain, store, and administer naloxone. Naloxone training is also available through Utah State University Extension.

Using Trail Cameras To Detect Small Mammals, S. Nicole Frey

All Current Publications

Traditional methods to detect wildlife, including nuisance animals, are not often successful at detecting small mammals. By modifying the deployment of trail cameras, including using a portable tunnel, we have successfully developed a "small mammal method" that has been used to inventory animals at Zion National Park and Cedar Breaks National Monument. We provide details on how to modify simple trail camera deployment. We also provide detailed instructions on how to create a portable small mammal tunnel to improve species detection and identification.

A Numerical Investigation Of The Performance Of Damaged Concrete Barriers Under Sequential Vehicular Impacts, Ashesh Pokhrel, Andrew D. Sorensen, Mohsen Zaker Esteghamati

Civil and Environmental Engineering Student Research

Concrete median barriers are prone to damage from low-velocity impacts. However, there is a limited understanding of how damage from initial impacts affects barriers’ long-term performance and whether they maintain safe continued service or must be replaced. Therefore, this paper evaluates the performance of the concrete barriers under sequential low-velocity impact using finite-element analysis. Crash test simulations were performed by impacting the concrete barrier twice with an 80,000 lb (36-ton) tractor-trailer at a target impact velocity and angle. The first impact’s velocities varied between 30 mph (48 kmph) and 54 mph (87 kmph) at 10◦ , 15◦ , and 20◦ …

Interactions Among Nutrients Govern The Global Grassland Biomass–Precipitation Relationship, Philip A. Fay, Laureano A. Gherardi, Laura Yahdjian, Peter B. Adler, Jonathan D. Bakker, Siddharth Bharath, Elizabeth T. Borer, W. Stanley Harpole, Erika Hersch-Green, Travis E. Huxman, Andrew S. Macdougall, Anita C. Risch, Eric W. Seabloom, Sumanta Bagchi, Isabel C. Barrio, Lori Biederman, Yvonne M. Buckley, Miguel N. Bugalho, Maria C. Caldeira, Jane A. Catford, Qingqing Chen, Elsa E. Cleland, Scott L. Collins, Pedro Daleo, Chris R. Dickman, Ian Donohue, Mary Ellyn Dupre, Nico Eisenhauer, Anu Eskelinen, Nicole Hagenah, Yann Hautier, Robert W. Heckman, Ingibjörg S. Jónsdóttir, Johannes M. H. Knops, Ramesh Laungani, Jason P. Martina, Rebecca L. Mcculley, John W. Morgan, Harry Olde Venterink, Pablo L. Peri, Sally A. Power, Xavier Raynaud, Zhengwei Ren, Christiane Roscher, Melinda D. Smith, Marie Spohn, Carly J. Stevens, Michelle Tedder, Risto Virtanen, Glenda M. Wardle, George R. Wheeler

Wildland Resources Faculty Publications

Ecosystems are experiencing changing global patterns of mean annual precipitation (MAP) and enrichment with multiple nutrients that potentially colimit plant biomass production. In grasslands, mean aboveground plant biomass is closely related to MAP, but how this relationship changes after enrichment with multiple nutrients remains unclear. We hypothesized the global biomass–MAP relationship becomes steeper with an increasing number of added nutrients, with increases in steepness corresponding to the form of interaction among added nutrients and with increased mediation by changes in plant community diversity. We measured aboveground plant biomass production and species diversity in 71 grasslands on six continents representing the …

Hidden Heroes: Honoring And Preserving Memory Through Oral Histories, Joe Kinzer

Library Faculty & Staff Presentations

What we collect and produce at the Fife Folklore Archives

• Local and regional history
• Cache Valley and the Intermountain West
• Immigrants, refugees, farmers, ranchers, old-time fiddlers, community activists, religious communities, Native American voices, veterans, cowboy poets, and more.

Crop Water Productivity: Within-Field Spatial Variation In Irrigated Alfalfa (Medicago Sativa L.), Keegan Hammond, Ruth Kerry, Ross Spackman, April Hulet, Bryan G. Hopkins, Matt A. Yost, Neil C. Hanson

Plants, Soils, and Climate Faculty Publications

In this study, alfalfa (Medicago sativa L.) is evaluated for suitability of variable rate irrigation (VRI) by analyzing within-field variation in crop water productivity (CWP) under uniform irrigation. The objectives were to (1) measure within-field variation in crop evapotranspiration (ET), (2) quantify spatial variability of alfalfa biomass yield, and (3) assess whether a bivariate analysis of CWP and yield could inform VRI management zones. Research was conducted on a 22.6 ha center-pivot irrigated alfalfa field near Rexburg, Idaho, USA, over three harvest intervals (HIs) in 2021 and 2022. Using a water balance method at 66 field points, ET exhibited …

Crop Advisor Approaches To Soil Health Advising And Opportunities For Improvement, Peggy Petrzelka, Jessica D. Ulrich-Schad, Matt Yost, Jenae Dean, Earl Creech, Linda Schott, Tony Richards, Kristy Davis

All Current Publications

In this report, we use data from a 2023 online survey of crop advisors in Utah and Idaho to examine how they are working with their clients on soil health and where opportunities for improvement exist.

Ethical Concerns And Implications Of Expanded Carrier Screening, Emily Andres

Student Research Symposium

The rapid evolution in the field of genetics is often met with uncertainty and skepticism. With the advancements in genetic technologies, expanded carrier screening (ECS) has emerged as a powerful tool in reproductive medicine. While ECS provides prospective parents with insight into their genetic risk, it also raises serious ethical questions for many.

To Bee Or Not To Bee: Investigating Pesticide Behavior Inside And Outside Semi-Field Cages, Mallory Bingham

Student Research Symposium

Background

Pesticides are vital in preventing crop damage from pests but are cited as a key factor in decreasing bee populations.¹ The alfalfa leaf cutting bee is essential in alfalfa seed production in the Western US.² Current research seeks to examine the effects of pesticides on these solitary bees to maintain healthy populations while controlling pests.³

One research tool commonly used to examine pesticide effects on bees is field-cages. Field cages are thought to simulate agroecosystem conditions while restricting bees to plots that have been sprayed with pesticides.^1,4

However, environmental conditions can be different inside and …

Anti-Transgender Legislation And State Legislature Demographics, Sophie Christensen

Student Research Symposium

Introduction

Anti-transgender legislation has been introduced in state legislatures at exponentially increasing rates over the past five years. 85 bills were introduced in 2020, climbing rapidly to 692 in 2024. As of April 3, 2025, 830 bills have already been introduced in 2025.*

Studies show that this legislation is harmful to the LGBTQ+ community, especially transgender youth, even if bills are only introduced. This project seeks to understand the demographic factors of legislatures introducing and passing this legislation to assist advocates in electing legislators who will fight this legislation.

Robinhood Stock Pitch, Morgan Cole

Student Research Symposium

Investment Overview

Projected 2 Year Stock Price

$86.89

Current Stock Price (as of close 4/1/25)

$42.85

Projected Upside

103%

Impacts Of Reef Fish Length On Foraging Radius: Exploring Behavioral Patterns Within A Patch Reef Ecosystem, Kilia Brawand

Student Research Symposium

Introduction

Coral reefs support high levels of marine biodiversity

• Patch reefs serve as vital refuges for small fish.
• Predation risk shapes how far fish stray from their reef, creating a “foraging radius”— the maximum distance traveled before retreating.

Absolute swimming speed in fish increases with body size (1).

• Therefore, larger fish may travel farther away from their refuge to forage over greater areas

This study tested the following question: Does a reef fish’s length influence how far it travels from its patch reef refuge?

Investigation Of Immune/Performance Trade-Offs In Neonate Children's Pythons, Ellie Hartman

Student Research Symposium

Introduction

Energetic trade-offs are a key consideration when understanding an organism’s life history. One of these tradeoffs occurs between investment in immunity and performance.

• Individuals that invest more energy into immunity may be less equipped to avoid predation or find food, while those prioritizing performance may be more susceptible to infection
• Hypothesis: In response to a novel antigen, neonate snakes will have an immune response we can measure by counting immune cells. Additionally, we predict that strike frequency, swim speed, and endurance will be reduced in snakes undergoing an immune response and that with greater immune response we will see …

Evaluating The Effects Of Oxidative Stress On Primary Retinal Pigment Epithelial Cells, Sophia Hessami

Student Research Symposium

Introduction

Age-Related Macular Degeneration (AMD) is the leading cause of vision loss worldwide, affecting 200 million adults over the age of 40

• Affects subretinal layers: retinal pigment epithelium (RPE), Bruch’s membrane, and choroid (Fig. 1)

Problem: Early mechanisms of AMD are not well understood; oxidative stress is often cited as a key contributing factor to the development of AMD.3 Current studies neglect to use primary RPE cells when investigating oxidative stress.

Oxidative Stress occurs when there is an imbalance between reactive oxygen species (ROS) production and cellular antioxidant defenses

• Overabundance of ROS results in damage to tissue and …

Weaving Freedom: A Sustainable And Autonomous Approach To Community Development In Rural Argentina, Caroline Johnson

Student Research Symposium

AWANAY is a boutique weaving company. AWANAY’s mission is to support dignity and provide continuous opportunity for rural weavers. The project aligns with this mission for community-centered development in rural regions.

Home to AWANAY’s skilled artisans, Blanca Pozo, Argentina faces environmental pressures, including extreme heat, flooding, and limited access to electricity and fresh water. Drawing on the history of Argentine architecture and global sustainable design principles, this project proposes solutions tailored to the local climate and culture. Through this approach, this design meets immediate challenges and fosters resilience and prosperity for generations of weavers to come.

Beyond The Finish Line: How Mindset & Setbacks Shape Future Success In High School Sprinters, Hannah Lybbert

Student Research Symposium

Introduction

Across many domains, mindset has been shown to affect performance; however, quantifying that belief can be challenging to do empirically.

Track and Field 100m results provide a perfect environment to attempt to quantify the magnitude of the effect of mindset on performance – timing equipment and wind sensors never lie!

Data Science For Engineers, Heidi Moulton

Student Research Symposium

30% of USU undergraduate students participate in some sort of research, and for engineering students this often means generating large amounts of data.

Data Science for Engineers is a series of four modules that introduce students to data processing, visualization, and graphing in the Python programming language using Pandas DataFrames and Juypter Notebooks.

The modules are intended for students with a basic understanding of programming in Python, specifically those who have taken CS 1400 Introduction to Computer Science.

Adaptation Of Influenza A Virus Strains A/Anhui/1/2013 (H7n9) And A/Shanghai/1/2013 (H7n9) For Development Of Effective Mouse Models, Spencer Mullen

Student Research Symposium

Introduction

Animal models are key to the research and development of antiviral interventions. Two strains of low-pathogenic avian influenza virus, A/Anhui/1/2013 and A/Shanghai/1/2013 (H7N9), isolated from a 2013 outbreak in China and acquired by USU’s Institute for Antiviral Research from the CDC, are the subject of this project.

Developing antiviral interventions against Influenza A H7N9 is essential because:

• Global outbreaks have caused high mortality among bird and human populations since 2013.^[1]

• Low-pathogenic avian flu viruses can mutate to become highly pathogenic.^[2]

• No current prophylactic or therapeutic human interventions exist.^[3]

BALB/c mice, commonly used for …

Inconsistencies With The Drumian Carbon Isotope Excursion (Dice) In West-Central Utah, Michelle Norman

Student Research Symposium

Geologic Setting

• During the Cambrian Period (539-485.4Ma), the western US was submerged by a shallow ocean
• Carbon cycle fluctuations in stable carbon were preserved in marine sediments
• One such period of geologic time, the Drumian Age (500Ma), is defined by the first appearance of a deepwater trilobite, P. atavus, in west-central Utah
• Researchers have hypothesized we can find Drumian-aged rocks without the fossils using carbon cycle fluctuations preserved in limestone
• the Drumian Carbon Isotope Excursion (DICE) is defined as a -2.5‰ fluctuation in global carbon-bearing rocks

Discovering The True Meaning Of Federalist No. 27, Mckenzie Pedersen-Campbell

Student Research Symposium

Background

Three of the Founding Fathers wrote the Federalist Papers in order to gain support for and explain the new system of government.

• The Federalist Papers provide valuable insight into the original meaning of the Constitution.

• Supreme Court Justices often look to the Federalist Papers when making decisions but do not always come to the same understanding.

• In Printz v. United States (1997), both the Supreme Court’s majority and dissenting opinions used Federalist No. 27 to support their arguments.

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The Stem Gender Gap: Can It Be Closed?, Makenna Roberts

Student Research Symposium

Introduction

While many industries have achieved gender parity, women remain underrepresented in STEM fields, with participation stagnating between 32% and 35% from 2011 to 2021. Research suggests this gap is influenced by relative cognitive strengths and social/societal factors. This study analyzes two datasets: (1) SAT score report data from the National College Board and (2) employment data from the 2021 NCSES Survey of Recent College Graduates. Findings highlight disparities at the highest percentiles and lower workforce participation among female STEM graduates.

Women In Accounting, Heidi Sundberg

Student Research Symposium

There is currently a shortage of about 340,000 accountants in the US, which is detrimental to companies.

• However, especially in Utah, there are many women who graduated in accounting but don’t stay in the field for very long. These women could help to fill the shortage, which would be beneficial for them to grow as professionals and for companies.
• My hypothesis is that employers aren’t aware of all the barriers that women face in the accounting field.

Evaluating The Stress System Of The Grieving Brain: Corticotropin-Releasing Factors And Partner Loss In Coyotes, Rachel Tong

Student Research Symposium

Introduction

Social bonds are fundamental and essential

• Positive and negative effects

The stress system¹ :

• Corticotropin-releasing factor (CRF) system
• CRFR1 and CRFR2
• Acts on the HPA axis, amygdala, and hippocampus

Genetic monogamy is common among coyotes

Importance:

• Coyotes’ greatest threat are humans
• An abandoned partner can disrupt biology and behavior

Animals experience social loss too!

Assessing Response Diversity Of Spawning Conditions Among Streams Due To Interannual Changes In Snowpack, Autumn Zierenberg

Student Research Symposium

Introduction

• Temporarily available streams, including intermittent streams, account for roughly 79% of streams in Utah alone (National Hydrography Dataset (NHD) 2008; Goodrich et al., 2018), yet are often overlooked as suitable habitats for native fishes.
• Intermittent streams are inundated during native Cutthroat Trout (Oncorhynchus clarkii) spawning season (Budy et al., 2012) and can be used by spawning trout during some years (Rousseau 2024)
• Understanding the role of intermittent streams for productivity of basin scale populations is critical to determining the scale of habitats necessary to conserve stable, productive populations.
• To characterize intermittently available spawning habitats, we assess the …