Digital Commons Network^™

Recolonizing Wolves And Mesopredator Suppression Of Coyotes:Impacts On Pronghorn Population Dynamics, Kim Murray Berger, Mary M. Conner

Wildland Resources Faculty Publications

Food web theory predicts that the loss of large carnivores may contribute toelevated predation rates and, hence, declining prey populations, through the process ofmesopredator release. However, opportunities to test predictions of the mesopredator releasehypothesis are rare, and the extent to which changes in predation rates influence preypopulation dynamics may not be clear due to a lack of demographic information on the preypopulation of interest. We utilized spatial and seasonal heterogeneity in wolf distribution andabundance to evaluate whether mesopredator release of coyotes (Canis latrans), resulting fromthe extirpation of wolves (Canis lupus) throughout much of the United States, contributes tohigh rates of …

Dose Response Relationship Between Aquatic Treadmill Running And Change To Si In Land Treadmill Running, Luke Campbell Roberts

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

Aquatic therapies have been used in some of the earliest human civilizations. Examples can be seen in China, ancient Rome and even in the early history of U.S. settlements.^1,2 Over the past few years aquatic environments have become a more common method for rehabilitation, injury prevention, and cross training. Additionally, research has observed that aquatic exercise may assist in pain relief, swelling reduction, and ease of movement due to the pressure and warmth of water.⁷ Aquatic environments can also be used to reduce forces placed on the lower extremities by reducing the weight of the subject through buoyancy. …

Sagestep News, Spring 2015, No. 26, Sagestep

Newsletters

Seasonal newsletter of SageSTEP.

Utah State University Commencement, 2015 – Main Campus, Utah State University

Commencement Programs

128^th Annual Commencement of Utah State University.

Tremblings, May 2015, Western Aspen Alliance

Tremblings

Remembering the Genet of Aspen Researchers

Dan Kashian

A visionary in aspen research, Dr. Burton V. Barnes, passed away in July 2014 in Ann Arbor, Michigan at the age of 83. He was Professor Emeritus at the University of Michigan where he spent his entire academic career and the Forest Botanist at its Matthaei Botanical Gardens.

Position Announcement And Job Description Head | Biological Engineering, Usu College Of Engineering

College of Engineering News

Utah State University seeks applications from candidates for the Head of the Biological Engineering Department. Applicants must have earned a PhD or equivalent in Biological Engineering or a related engineering discipline, have academic experience in a teaching and research institution, and a record of research excellence in the broad area of biological engineering or a related field. Applicants must also be eligible for the rank of tenured full professor. Research excellence can be demonstrated through a combination of scholarly publications, extramural funding, and recognition through professional activities. The successful applicant will be expected to provide strong leadership and a vision …

Centrality Measures Of Graphs Utilizing Continuous Walks In Hilbert Space, Jarod P. Benowitz

Physics Capstone Projects

Centrality is most commonly thought of as a measure in which we assign a ranking of the vertices from most important to least important. The importance of a vertex is relative to the underlying process being carried out on the network. This is why there is a diverse amount of centrality measures addressing many such processes. We propose a measure that assigns a ranking in which interference is a property of the underlying process being carried out on the network.

Mitigation Of Medusahead (Taeniatherum Caput-Medusae) Through Grazing And Revegetation On The Channeled Scablands Of Eastern Washington, Clinton A. Stonecipher

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A large portion of the historical steppe and shrub-steppe habitats in eastern Washington have been altered through biotic and abiotic processes resulting in the annual grass medusahead becoming a large component of the altered vegetation. Experiments were conducted to determine: 1) if supplementing cattle with protein would help increase utilization of medusahead, 2) the grass species that could establish in the region, and 3) if mechanical disturbance would aid in such revegetation efforts. Cattle grazing medusahead-infested rangeland increased consumption of medusahead after all forage matured due to a reduction in the quality of forage alternatives. Cattle supplemented with protein increased …

The Mystical Union Of Infant Baptism: How Baptists Contributed To The Idea Of Race By Their Rejection Of Infant Baptism, Isaiah E. Jones

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In the first three centuries CE, the sacrament of baptism proved to be a universal tool which united people beyond age, race, or ethnicity as we understand it today. To put it simply, the theological meaning of baptism was reinforced by the sacrament of infant baptism. That is to say that the Christian faith was for all, irrespective of one’s race, age, or social-status. This openness to Christianity changed in the early modern period. In the seventeenth century the Baptists rejected infant baptism, for a more rational faith based on Enlightenment and Romantic assumptions. What the Baptists did not realize …

Postharvest Degradation Of Microalgae: Effect Of Temperature And Water Activity, Jacob A. Nelson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Though usually a nuisance in swimming pools and ponds, algae has the potential to be a valuable commodity for use as food and fuel. But before algae butter and biofuel become commonplace, issues with harvesting and storing this new crop need to be overcome. Though there has been ample research into how to grow and use algae, scientists have spent little time figuring out what to do after you pull it out of the water and before you eat it (or turn it into biodiesel). Algae, like all food products, starts to spoil as soon as it is harvested.

This …

Group Housing And Social Stress In Side-Blotched Lizards (Uta Stansburiana), Marilize Van Der Walt

Undergraduate Honors Capstone Projects

Stress in regards to an animal's social housing environment is well studied in mammals; however there are few studies examining this in reptiles and the results are thus far unclear. For example, behavioral evidence shows adverse effects from individual housing in juvenile chameleons, however physiological measures in whiptail lizards show adverse effects from group housing. Because some reptiles appear to be affected negatively by their social housing environment while others are impacted positively, if we can discover the reason for these differences, we will be able to implement the most effective housing regimes for reptiles. In this study, we tested …

Movement Variability During Isometric Force Tracking And Quiet Stance, Zachary Phipps

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

Variability in human motor performance is an area of study that has many unanswered questions. Nearly every system of the human body has variability while it performs its functions. Simply looking at heart rate and respiratory rate shows the variable function of two of the main systems of the human body (circulatory and respiratory systems).

Wingate Anaerobic Test Methods For Power-Trained Males Using Velotron, Nicolas W. Clark

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

The purpose of this study was to examine the effects of two methodologies (start method and sprocket size) of the Wingate Anaerobic Test (WAnT) on peak power (PP) and mean power (MP). Twenty power-trained males (24.6 ± 4.5 years; 25.4 ± 2.5 BMI) with the same exercise routine for the past 4 months performed, in a randomized order, four WAnT with different combinations of start method, flying (FLY) or stationary (STA), and front sprocket size, 62-tooth sprocket (S-62) or 85-tooth sprocket (S-85), using the Velotron Racermate®. The results showed main effects for start method (p < 0.001; ES 0.753) and sprocket size (p < 0.001; ES 0.69) for PP and MP, respectively. For PP, significantly (p < 0.001) higher mean differences were shown for both FLYs (14.4 w/kg) while MP showed significant (p < 0.01) increases for S-85 in combination with the FLY (10.9 W/kg) and for S-85 in combination with the STA (9.7 W/kg). Pearson correlation (r) revealed no significant relationship between same start methods, FLY (p > 0.05; r = 0.227) or …

Preserved Motor Asymmetry In Late Adulthood: Is Measuring Chronological Age Enough?, Sydney Y. Schaefer

Kinesiology and Health Science Faculty Publications

When comparing motor performance of the dominant and nondominant hands, older adults tend to be less asymmetric compared to young adults. This has suggested decreased motor lateralization and functional compensation within the aging brain. The current study further addressed this question by testing whether motor asymmetry was reduced in a sample of 44 healthy right-handed adults ages 65-89. We hypothesized that the older the age, the less the motor asymmetry, and that ‘old old’ participants (age 80+) would have less motor asymmetry than ‘young old’ participants (age 65-79). Using two naturalistic tasks that selectively biased the dominant or nondominant hands, …

Effect Of Aggregation At A Winter Feeding Station On Intestinal Parasite Load In Elk (Cervus Canadensis), Morgan Jaromilla Hughes

Undergraduate Honors Capstone Projects

Winter feeding stations are used throughout the western US to reduce elk depredation of crops and haystacks on private lands. Many of the unintended effects of such artificial congregation remain unexamined, but generally, across species, locally increased host densities result in increased parasite loads. This adds physiological stress to individual animals and in game species such as elk it could reduce their value to sportsmen. Through laboratory analyses of fresh samples, we recorded nematode egg densities in elk feces collected during two periods ( early and late) in the supplementary feeding season. Mean nematode egg density remained fairly constant in …

Investigating The Pathogenecity Of Chl1 Leu17phe Polymorphism In Schizophrenia, Brooke Nichole Hansen

Undergraduate Honors Capstone Projects

Schizophrenia is a devastating brain disorder that affects a surprising 1% of the world's population. Despite this prevalence, little is known about the molecular aspects of this disorder making it both difficult to diagnose and treat. Several studies have identified the CHL1 gene (Close Homolog of L1), sometimes referred to as CALL, as a risk gene for schizophrenia. CHL1, a neural cell adhesion molecule, has major roles in cell migration, and the development of dendritic and axonal projections. Therefore any deficiency in CHL1 may result in brain defects similar to those identified in schizophrenic populations. Moreover, in genetically engineered mice, …

Dna Methylation Analysis Of Lin28a & Hand1 In Electrostimulated Genetically Unmodified Porcine Fibroblast Cells Grown In Vitro, Sara E. Calicchia

Undergraduate Honors Capstone Projects

Pluripotent (undifferentiated) cells are important for their applications in regenerative medicine. However, gene-based nuclear reprogramming of adult somatic cells is a slow and inefficient process, and poses some risk to recipient patients. Therefore, a major goal within the field of stem cell biology is to find a way to accomplish adult somatic cell de-differentiation using small chemical modulators of gene expression or other non-genomic mechanisms. Pilot studies in our laboratory have suggested that cells exposed to silver ions generated by the passage of a weak electrical current through a silver wire show morphological and gene expression changes reminiscent of de-differentiation. …

Developing A Portable System For Measuring Human Motor Learning, Karen Elizabeth Tew

Undergraduate Honors Capstone Projects

Point-to-point reaching is a commonly used paradigm in the field of human motor control. By studying how people move their arms from one location in space to another, researchers have gained insight into how the central nervous system controls and learns skilled movement. Many experimental methods that are designed to study reaching are not portable. This makes it difficult for researchers to access certain clinical populations with limited mobility or motor dysfunction. We have addressed this issue by developing a point-to-point reaching system that can capture key movement variables (e.g. speed and accuracy) yet is portable and inexpensive. We have …

Empowering Community Partners: A Case Study Motivating Environmentally Sustainable Behavioral Changes In Latino Migrant Agricultural Families, Jessica Ivy Thomson

Undergraduate Honors Capstone Projects

Environmental sustainability outreach programs can benefit significantly through adaptation that connects to and fosters change within the Spanish speaking community. This article demonstrates a case study in which the authors partnered with a local Latino organization through an undergraduate service-learning project. The goal of this project was to incorporate environmentally sustainable behaviors both with young Latino students in school and with their families at the household level.

Genetic And Environmental Interactions On Schizophrenia-Like Phenotypes In Chl1 Deficient Mice, J. Daniel Obray

Undergraduate Honors Capstone Projects

Schizophrenia is a debilitating disorder which is often characterized by dysregulation of the processing of sensory information. Schizophrenia has been shown to have a strong genetic component, as well as a strong environmental component. As such, a number of hypotheses such as the diathesis stress hypothesis have been developed to explain the etiology of schizophrenia. As most of these theories attempt to account for a genetic and an environmental factor, they are often viewed as double-hit models of schizophrenia. Several theories have emerged as potential explanations for the symptoms of schizophrenia. The dopamine hypothesis suggests that the basal level of …

Sources Of Uncertainty In Stream Nutrient Sampling Below A Point Source, Alexandria Hayden Campbell

Undergraduate Honors Capstone Projects

The goal of this study was to determine what aspects of sampling and sample storage could lead to uncertainty when taking samples in a stream below a point source. Sources of uncertainty studied were the locations where the samples were taken to assess if nutrients were adequately mixed within a cross-section, different filtration techniques, dilution errors, analytical uncertainty, and freezing time. Bootstrapping analyses were used to determine whether mixing and dilution errors led to uncertainty, while one-way ANOVAs were used to evaluate filtration techniques and storage time. Sample spikes to determine percent recovery of nutrients and repeat sample analyses are …

Unwanted Sexual Experiences: Exploring Conservative Socialization As An Important Contextual Factor, Analise Barker

Undergraduate Honors Capstone Projects

This mixed methods study examined sexual assault experiences and interpretations within a conservative religious context. In study one, male and female undergraduates (n=234) responded to survey questions assessing religious dogmatism, sexist ideology, traditional gender roles, and rape myth acceptance. Religious fundamentalism was related to rape myth acceptance for women, but not men, and both benevolent sexism (e.g., chivalry) and traditional gender role adherence fully mediated the relationship between religious fundamentalism and rape myth acceptance for women. In study two, 14 women were interviewed about their unwanted sexual assault experiences (USE) and were asked to evaluate their experiences with reference to …

An Overview Of Batrachochytrium Dendrobatidis In Utah, With A Focus On Boreal Toads And Their Changing Conservation Status, Samantha A. Beirne

Undergraduate Honors Capstone Projects

The Boreal Toad (Anaxyrus boreas) has disappeared from a large portion of its range in southern Utah and it has been questioned whether Batrachochytrium dendrobatidis (Bd, also known as chytrid) has played a role in its disappearance. The role of chytrid in range contraction of Boreal Toads and other amphibians in Utah is unknown. The primary objective of this project is to determine if any historic Boreal Toad specimens have chytrid to determine its arrival in Utah. If any old specimens test positive, the secondary goal of this study is to determine if there is a relationship between …

Quantifying Non-Game Fish Sampling Biases And Demographics To Better Understand The Role Of Fish In Pelican Diet And Distribution At Strawberry Reservoir, Ut, Jamie Reynolds

Undergraduate Honors Capstone Projects

Predation and competition are natural ecological processes, though these interactions occasionally cause concern among humans when ecosystem services are involved (e.g., popular fisheries in highly managed systems). The population of American white pelican (Pelecanus erythrorhynchos) at Strawberry Reservoir (Utah) has increased dramatically in the last decade, as have the populations of Utah sucker (Catostomus ardens) and Utah chub (Gila atraria). Anglers and managers are concerned that predation by pelicans and competition from non-game fish species are negatively impacting the reservoir's prized Bonneville cutthroat trout (Oncorhynchus clarkii utah) fishery. My project focused on …

The Effects Of Zno Nanoparticles On Egg, Larva, And Adult Rough-Skinned Newts (Taricha Granulosa), Austin Reid Spence

Undergraduate Honors Capstone Projects

The objective of this study was to examine the effects of zinc oxide (ZnO) nanoparticles on egg, larva, and adult rough-skinned newts, Taricha granulosa. To date, little research has been done to investigate the potentially detrimental effects of nanoparticles on amphibians, especially salamanders and newts (caudates). Chronic toxicity was tested on eggs and larvae, and acute toxicity was tested on eggs, larvae, and adults. For eggs, chronic exposure to ZnO nanoparticles caused higher mortality at 10.0 and 100.0 mg/L compared to 0.0, 0.1, and 1.0 mg/L. When given an acute exposure (24h) to nanoparticles at a late incubation stage, …

The Influence Of Invasive Plants On The Small Mammal Community In A Cold Desert, Trinity N. Smith

Undergraduate Honors Capstone Projects

Exotic invasive species can alter ecosystem health. Cheatgrass (Bromus tectorum), Russian thistle (Salsola kali) and tall tumble mustard (Sisymbrium altissimum) are widely distributed invasive plants occurring throughout desert and shrub-steppe communities in the western United States. Due to the relative ease of capture, small mammal community metrics are often used to quantify overall ecosystem health. Studies examining small mammal communities are numerous but few have specifically examined the effects of invasive plants at the community level in arid ecosystems. In this study I examined community level small mammal responses to changes in microhabitat features, …

Meta-Analysis On Zoonotic Infectious Diseases Between Humans And Non-Human Primates, Madalyn R. Page

Undergraduate Honors Capstone Projects

Due to genetic similarity, non-human primates are often the focus of zoonotic infectious disease research. The objective of zoonotic disease research can vary depending upon whether the study is focusing on human health or the health of wild non-human primate populations. Research with non-human primates is often associated with their use in medical laboratories for the benefit of human health. However, other studies focus on both the health of wild non-human primate populations and human interactions. This study reviews zoonotic disease research published in three main primatology journals: American Journal of Primatology, International Journal of Primatology, and Primates. …

Increasing Vaccine Accessibility Through Cost Alternative Manufacturing And Elimination Of The Cold Chain, Jorgen Madsen

Undergraduate Honors Capstone Projects

Millions of people die each year from infectious diseases. This is partly due to the difficulty of transporting temperature dependent vaccines through what is called the cold chain in developing countries. I hypothesize that we can increase vaccine accessibility by finding cost effective alternatives to vaccine production and by eliminating the cold chain through vaccine stabilizers. The gold standard in purification of influenza virus is by means of ultracentrifugation. Although effective, this process is very expensive and thus impractical for developing countries. I hypothesize that column chromatography can be a cost efficient alternative that is as effective as ultracentrifugation. The …

Remote Heart Rate Estimation Using Consumer-Grade Cameras, Nathan E. Ruben

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

There are many ways in which the remote non-contact detection of the human heart rate might be useful. This is especially true if it can be done using inexpensive equipment such as consumer-grade cameras. Many studies and experiments have been performed in recent years to help reliably determine the heart rate from video footage of a person. The methods have taken an analysis approach which involves temporal Itering and frequency spectrum examination. This study attempts to answer questions about the noise sources which inhibit these methods from estimating the heart rate. Other statistical processes are examined for their use in …

The Multifaceted Interaction Of Pain Perception In Collegiate Athletes, Kristen Leigh Bartiss

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

Deepening the present understanding of the multidimensional nature of athlete perceptions of pain requires attention to three specific gaps. First, the field currently lacks fundamental knowledge regarding the relationship between an individual’s athletic identity and the role of the brain in deciphering and responding to painful stimuli. Because athletes view injury as a potential loss of identity and thus a significant part of themselves (International Olympic Committee, n.d.), the severity they ascribe to pain is both conceptually and practically relevant. Second, the field has yet to fully explore the specific areas of the brain associated with subsequent functional connectivity as …