Digital Commons Network^™

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 …

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 …

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

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.

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 …

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.

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 …

Frequency Of Fruit And Vegetable Consumption Among Women Diagnosed With Gestational Diabetes, Hailey Koster

Student Research Symposium

• Consuming fruits and vegetables has been associated with a reduced risk of gestational diabetes and improved pregnancy outcomes. ¹

• However, the majority do not meet the recommendation of five servings per day or 400 g per day according to the World Health Organization.²

Measuring Small Currents At Fast Speeds Using A 2Nd Generation Electrometer, Donna Metcalf

Student Research Symposium

The Electron Emission Test (EET) chamber in the Utah State University Materials Physics Group (MPG) is used to determine the electron yield of highly insulating materials. An electrometer is employed alongside the EET chamber to measure the output current of 10-6 to 10-14 pulses of 10-7 seconds to DC duration. In previous years, a first- generation electrometer was used for these measurements. However, the introduction of a new electrometer presents an opportunity to achieve faster measurement speeds and improved sensitivity to smaller current values.

Understanding Carbon Storage Of Uinta Mountain Fens, Eleni Christley

Student Research Symposium

• Peat is partially decomposed organic matter that forms under cool, inundated conditions.
• Peatlands, a type of wetland, are critical carbon sinks and store about 30% of the globe's soil organic carbon.
• Not much is known about peatlands in Utah, nor do we understand the factors that may contribute to carbon storage

Implications Of Positive Nitrogen Fixation Capabilities Of Peribacillus, Weston Farley, Ariana Long

Student Research Symposium

Recent studies highlight the versatile role of Peribacillus simplex in sustainable agriculture. This bacterium has been shown to alleviate saline and alkaline stress in maize, promoting plant growth and improving crop yield under challenging conditions and enhance agricultural sustainability by supporting soil health and reducing the need for chemical fertilizers. Its role in fixing nitrogen and improving plant health makes it an essential player in eco- friendly farming practices.. Other species of Peribacillus have been shown to fix nitrogen, suggesting that our sample bacteria may also have these same capabilities.

• Our goal in this research is to determine whether …

Disjunction In Arachnospila (Pompilidae: Hymenoptera): Convergent Evolution Or Recent Dispersal?, Bridger Jorgensen, Steven Madsen

Student Research Symposium

Convergent evolution is defined as unrelated species evolving similar traits. A disjunct distribution is the appearance of species or groups of species in disconnected geographical areas. Is the disjunction we see in Arachnospila due to a recent disjunct distribution/long distance dispersal event or long-term convergent evolution?

Farmstead Therapy: Intergenerational Connection And Sense Of Place Via Equine Therapy, Kaleb Griffeth

Student Research Symposium

Therapy has become a crucial element within society. It has offered relief, understanding, and hope for a changed future to hundreds of millions of people just in the last five years (SAMHSA, 2004).

On another front, division between generations seems to be growing by the month. Political, social, and economic differences between generations “X”, “Z”, Alpha, and Baby Boomers make it appear that there is no connection whatsoever across age gaps.

Because equine therapy has proven a succesful branch, especially for those of a younger demographic, Farmstead Therapy was a project designed to bring together the skills of the older …

Sos: Success Or Survival, Quinn Balser

Student Research Symposium

Research Question: How does unmet basic needs insecurity (food, housing, and financial insecurity) impact college students' academic performance, mental health, and engagement within campus residential communities?

Overveiw: Traditional student development theories often assume students' basic needs are met. But recent data shows food and housing insecurity is rising, especially among marginalized groups, challenging our understanding of student success.

Religious Trauma And Young Adults: What Is Their Perspective?, Ethan Lefevre

Student Research Symposium

How does religious trauma influence young adults' perspectives on organized religion and spirituality?

Effects Of Cbt For Anxiety On Sleep Quality (A Proposed Study), Brin Bement

Student Research Symposium

Good sleep has consistently been associated with good mental and physical health, yet nearly 1 in 5 Americans report sleep disturbances. Sleep-related problems (SRPs) are highly comorbid with anxiety, and the two variables have a bidirectional relationship.

Exercise And Its Effect On The Nad Content Of Tissues In Niacin Deficient Mice With Free Choice Running Wheels, Stellaluna Star

Student Research Symposium

Nicotinamide adenine dinucleotide (NAD) content of tissues decreases over time during aging. In our study, we determine if physical exercise has an effect on the NAD content in tissues of transgenic mice that were NAD- deficient because of vitamin B3-free diet. The underlying hypothesis of this study is that exercise can prevent NAD decline and maintain higher level of NAD in tissue. A potential impact of this study is that exercise could be used to lengthen healthspan compared to individuals not participating in any physical exercise.

Effect Of Geomagnetic Activity On Radio Propagation In The 14 And 18 Mhz Range, Stuart Barney

Student Research Symposium

The purpose of this experiment was to discover if the magnitude of a geomagnetic event has a notable effect on the reliability of the reception of a radio transmission given the location of origin.

Comparative Analysis Of An Aquatic And Dry-Land Catching And Throwing Exercise On Reaction Time And Inhibitory Executive Function, Haein Choi

Student Research Symposium

Fast and accurate reactions are crucial for fall prevention. The ReacStick measures reaction accuracy by requiring immediate motor responses without delay. This study compared the effects of aquatic and land-based catching and throwing exercise on reaction accuracy to explore effective fall prevention training methods.

Automatic Aurora Detection, Cameron Eggleston

Student Research Symposium

Aurorae happen when particles in the earth’s magnetosphere become excited and emit visible light. Below is a picture that shows this process more meaningfully:

The colors of each aurora is determined by these electrons as well. Below is a diagram showing where the different colors of aurora come from. In addition to being nice to look at, aurorae can be caused by Coronal Mass Ejections(CMEs). CMEs can affect radio communication, power grids, GPS systems, and more.

Expressing And Purifying Homologs Of Crispr Systems, Gabe Parrish

Student Research Symposium

CRISPR (Clustered Regularly Interspaced Palindromic Repeat)-Cas (CRISPR- associated) is a protein-nucleic acid adaptive immune system in Bacterial and Archaeal organisms that defends against invading foreign genetic material.

Earthquakes In Creeping Fault Zones? Mineralogic And Grain Size Controls On Frictional Behavior, Ainsley Macdonald

Student Research Symposium

1. Motivation

• Faults can creep or be locked to produce earthquakes.

• This behavior may be influenced by minerology and grain size

• Serpentine minerals and clay are known to promote creep along faults

• Does mineralogy promote creep along the Bartlett Springs Fault, CA?

Does Exercising With A Romantic Partner Improve Physical, Emotional, And Relational Well-Being?, Abbie Whitehead

Student Research Symposium

While exercise is known to benefit both physical and mental health, working out with a partner may amplify those benefits. Could exercising with a romantic partner further enhance these outcomes---while also improving relationship quality?

Human Centered Library Design, Myriam Musgrave

Student Research Symposium

Odyssey Childrens Library is designed as a dynamic and adaptable space that fosters learning, creativity, and community engagement. Inspired by the ocean, the architecture and interiors reflect fluid, organic forms and a calming yet invigorating color palette. The layout balances open, social areas with quiet, reflective spaces, ensuring a welcoming environment for all users. With a focus on flexibility, the library includes adaptable study rooms, a collaborative makerspace, and a multi-purpose community area that can host events, workshops, and group activities. Thoughtful wayfinding, varied seating options, and intuitive zoning create a seamless user experience. The Odyssey Library is more than …

Are Rotating Black Holes Rigid?, Luis Fernando Temoche

Student Research Symposium

What is rigidity for a black hole?

Harmonic Series: Fundamentals, Physics And Sound, Emmarose Santa Maria

Student Research Symposium

• The relationship between math and music has been one of the many wonders of nature (White & White, 2014).
• While the two fields may seem unrelated, physics is the driving force behind the production of music.
• Modern musical systems are based on intervals and ratios that were first discovered by Pythagoras and the production of sound is based on waves (Bain, 2003).