Digital Commons Network^™

High Tensile Permanent Electric Fence, Planning And Design, Matthew Palmer, Eric Thacker, Shannon Cromwell, Kevin Heaton, Kohl Carter

All Current Publications

This fact sheet provides detailed information about planning and designing a permanent electric fence.

The Spillover Effect Of Marketing Discolored Beef On Consumer Preferences For Nondiscolored Beef, Ryan Feuz, F. Bailey Norwood, Ranjith Ramanathan

Applied Economics Faculty Publications

Consumers prefer bright, cherry-red retail beef. Retailers often mark down the price of discolored beef for quick sale. However, following this practice could result in a net loss of revenue if consumer willingness to pay (WTP) for nondiscolored beef is negatively affected by the presence of discolored beef in the consumer choice set. Through a hypothetical online survey and a controlled in-person experiment, we determine that marketing discolored beef together with nondiscolored beef increases most consumers’ evaluation of, but not their WTP for, nondiscolored beef.

Organizational Capacity Of Nonprofit Organizations In Rural Areas Of The United States: A Scoping Review, Jayme E. Walters

Sociology, Social Work and Anthropology Faculty Publications

Rural America is facing a plethora of problems related to poverty, crime, health, and education. Nonprofit organizations serve a vital role in rural communities by providing services and advocacy to residents. Yet, it is unknown if rural nonprofits have the means to effectively address the complex issues before them. This study examines the results of scoping review which characterizes the state of empirical knowledge regarding the organizational capacity of rural nonprofits in the United States. Fifteen articles from the past decade uncovered challenges and strengths related to organizational capacity, though more research is necessary to inform funders and educators.

The Utah Statesman, November 26, 2019, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

An Updated Review Of Atmospheric Mercury, Seth N. Lyman, Irene Cheng, Lynne E. Gratz, Peter Weiss-Penzias, Leiming Zhang

Chemistry and Biochemistry Faculty Publications

The atmosphere is a key component of the biogeochemical cycle of mercury, acting as a reservoir, transport mechanism, and facilitator of chemical reactions. The chemical and physical behavior of atmospheric mercury determines how, when, and where emitted mercury pollution impacts ecosystems. In this review, we provide current information about what is known and what remains uncertain regarding mercury in the atmosphere. We discuss new ambient, laboratory, and theoretical information about the chemistry of mercury in various atmospheric media. We review what is known about mercury in and on solid- and liquid-phase aerosols. We present recent findings related to wet and …

The Utah Statesman, November 12, 2019, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

Is The “Preventing Animal Cruelty And Torture Act” A Step In The Right Direction?, Rachel Robinson-Greene

Languages, Philosophy, and Communication Studies Faculty Publications

On October 22nd, Congress unanimously passed the “Preventing Animal Cruelty and Torture Act.” The law makes certain acts of cruelty against animals federal crimes. Before the federal law was passed, legislation protecting animals was largely a matter reserved for state legislatures. The law was met with praise from both private citizens and animal welfare organizations like the American Society for the Prevention of Cruelty to Animals (ASPCA).

Dna Persistence In Predator Saliva From Multiple Species And Methods For Optimal Recovery From Depredated Carcasses, Antoinette J. Piaggio, Susan A. Shriner, Julie K. Young, Doreen L. Griffin, Peggy Callahan, Darren J. Wostenberg, Eric M. Gese, Matthew W. Hopken

Wildland Resources Faculty Publications

Molecular forensics is an important component of wildlife research and management. Using DNA from noninvasive samples collected at predation sites, we can identify predator species and obtain individual genotypes, improving our understanding of predator–prey dynamics and impacts of predators on livestock and endangered species. To improve sample collection strategies, we tested two sample collection methods and estimated degradation rates of predator DNA on the carcasses of multiple prey species. We fed carcasses of calves (Bos taurus) and lambs (Ovis aires) to three captive predator species: wolves (Canis lupus), coyotes (C. latrans), and …

A Rolling Perspective: Fear, The Mind-Killer, Jennifer Holland

Blog Posts

The blog post is about dealing with fear.

Nonlinear Reaction–Diffusion Process Models Improve Inference For Population Dynamics, Xinyi Lu, Perry J. Williams, Mevin B. Hooten, James A. Powell, Jamie N. Womble, Michael R. Bower

Mathematics and Statistics Faculty Publications

Partial differential equations (PDEs) are a useful tool for modeling spatiotemporal dynamics of ecological processes. However, as an ecological process evolves, we need statistical models that can adapt to changing dynamics as new data are collected. We developed a model that combines an ecological diffusion equation and logistic growth to characterize colonization processes of a population that establishes long‐term equilibrium over a heterogeneous environment. We also developed a homogenization strategy to statistically upscale the PDE for faster computation and adopted a hierarchical framework to accommodate multiple data sources collected at different spatial scales. We highlighted the advantages of using a …

Audience Awareness In The Writing Center: Guiding Introductory Writing Students With More Directive Comments, Samantha Clem

Writing Center Analysis Papers

Looking at the demographics of the students utilizing the writing center (WC) at a university in the US mountain west, the author questions whether the commenting styles in which WC tutors are trained accurately address the needs of the user population. Data on what courses WC visitors are enrolled in shows that the majority of WC user are introductory English students, with 70% of users being enrolled in one of the two required introductory level English courses (ENGL 1010 or ENGL 2010). Tutor training focuses on facilitative commenting styles, tactics that may not be effective for this given population of …

Tremblings, November 2019, Western Aspen Alliance

Tremblings

Aspen Success Hinges on Innovative Technique

Shelly Deisch

David Mallett

In searching for an aspen topic yet to be covered in Tremblings, we arrived at the restoration practice called “hinging,” which appears to be most widely practiced in the South Dakota portions of the Black Hills.

Body Condition Scoring For Horses, Karl Hoopes, Eric Thacker, Linden Greenhalgh

All Current Publications

Horse enthusiasts are often concerned about their horse’s health, appearance and performance. A major key to accomplishing these three goals is to keep your horse at a desirable body condition, or degree of fat cover. However, being able to accurately evaluate a horse to tell if they are over or underweight has been a subjective practice for many years. As with all aspects of horse ownership, horse owners have different opinions on what is an ideal body weight for an individual horse. Also, because horses come in all shapes and sizes, many horse owners are not able to objectively evaluate …

A Global View Of Aspen: Conservation Science For Widespread Keystone Systems, Paul C. Rogers, Bradley D. Pinno, Jan Šebesta, Benedicte R. Albrectsen, Guoqing Li, Natalya Ivanova, Dominik Kulakowski, Antonín Kusbach, Timo Kuuluvainen, Simon M. Landhäusser, Hongyan Liu, Tor Myking, Pertti Pulkkinen, Zhongming Wen

Ecology Center Publications

Across the northern hemisphere, six species of aspen (Populus spp.) play a disproportionately important role in promoting biodiversity, sequestering carbon, limiting forest disturbances, and providing other ecosystem services. In many regions, aspen can maintain canopy dominance for decades to centuries as the sole major broadleaf trees in forested landscapes otherwise dominated by conifers. Aspen ecosystems are valued for many reasons, but here we highlight their potential as key contributors to regional and global biodiversity. We begin with an overview of the aspens’ ecological and economic roles. We then present a systematic literature analysis to assess topics of aspen …

Cpd Director Teaches Usu Employees To Laugh Off Stress, Jolynne Lyon

Blog Posts

Blog post is about dealing with stress.

Genetic Structure Of Mycoplasma Ovipneumoniae Informs Pathogen Spillover Dynamics Between Domestic And Wild Caprinae In The Western United States, Pauline L. Kamath, Kezia Manlove, E. Frances Cassirer, Paul C. Cross, Thomas E. Besser

Ecology Center Publications

Spillover diseases have significant consequences for human and animal health, as well as wildlife conservation. We examined spillover and transmission of the pneumonia-associated bacterium Mycoplasma ovipneumoniae in domestic sheep, domestic goats, bighorn sheep, and mountain goats across the western United States using 594 isolates, collected from 1984 to 2017. Our results indicate high genetic diversity of M. ovipneumoniae strains within domestic sheep, whereas only one or a few strains tend to circulate in most populations of bighorn sheep or mountain goats. These data suggest domestic sheep are a reservoir, while the few spillovers to bighorn sheep and mountain goats can …

Corridors Or Risk? Movement Along, And Use Of, Linear Features Varies Predictably Among Large Mammal Predator And Prey Species, Melanie Dickie, Scott R. Mcnay, Glenn D. Sutherland, Michael Cody, Tal Avgar

Wildland Resources Faculty Publications

1. Space‐use behaviour reflects trade‐offs in meeting ecological needs and can have consequences for individual survival and population demographics. The mechanisms underlying space use can be understood by simultaneously evaluating habitat selection and movement patterns, and fine‐resolution locational data are increasing our ability to do so.
2. We use high‐resolution location data and an integrated step‐selection analysis to evaluate caribou, moose, bear, and wolf habitat selection and movement behaviour in response to anthropogenic habitat modification, though caribou data were limited. Space‐use response to anthropogenic linear features (LFs) by predators and prey is hypothesized to increase predator hunting efficiency and is thus believed …

North American Hard Yellow Liver Disease: An Old Problem Readdressed, Bryan L. Stegelmeier, Meredyth Jones, Christopher P. Womack, T Zane Davis, Dale R. Gardner

Poisonous Plant Research (PPR)

Hard yellow liver disease or fatty cirrhosis periodically affects cattle, sheep, goats, pronghorn antelope (Antilocapra americana) and whitetail deer (Odocoileus virginianus texanus) within several Texas counties in the United States. Clinically it presents as chronic liver disease with progressive hepatic necrosis and fibrosis, icterus and liver failure. The damaged livers are yellow and many have multiple firm, often gritty foci that are scattered throughout all lobes. Early investigations included feeding studies using potential toxic plants, climate and forage studies, infectious disease surveys and various mycotoxin studies and analyses. None have definitively reproduced the disease or identified the inciting …

Larger Genomes Linked To Slower Development And Loss Of Late-Developing Traits, Molly C. Womack, Marissa J. Metz, Kim L. Hoke

Biology Faculty Publications

Genome size varies widely among organisms and is known to affect vertebrate development, morphology, and physiology. In amphibians, genome size is hypothesized to contribute to loss of late-forming structures, although this hypothesis has mainly been discussed in salamanders. Here we estimated genome size for 22 anuran species and combined this novel dataset with existing genome size data for an additional 234 anuran species to determine whether larger genome size is associated with loss of a late-forming anuran sensory structure, the tympanic middle ear. We established that genome size is negatively correlated with development rate across 90 anuran species and found …

Functional Traits Explain Amphibian Distribution In The Brazilian Atlantic Forest, Ricardo Lourenço-De-Moraes, Felipe S. Campos, Rodrigo B. Ferreira, Karen H. Beard, Mirco Solé, Gustavo A. Llorente, Rogério P. Bastos

Ecology Center Publications

Aim: Species distributions are one of the most important ways to understand how communities interact through macroecological relationships. The functional abilities of a species, such as its plasticity in various environments, can determine its distribution and beta diversity patterns. In this study, we evaluate how functional traits influence the distribution of amphibians, and hypothesize which functional traits explain the current pattern of amphibian species composition in the Atlantic Forest.

Location: Atlantic Forest, Brazil.

Methods: Using potential distributions of Brazilian Atlantic Forest of amphibian species, we analysed the relative importance of abiotic factors and species functional traits in explaining species richness, …

Investment Of Both Essential Fatty And Amino Acids To Immunity Varies Depending On Reproductive Stage, Taylor V. Pettit, R. John Pettit, Andrew M. Durso, Susannah S. French

Ecology Center Publications

Trade‐offs among the key life‐history traits of reproduction and immunity have been widely documented. However, the currency in use is not well‐understood. We investigated how reproducing female side‐blotched lizards, Uta stansburiana, allocate lipids versus proteins when given an immune challenge. We tested whether lizards would invest more in reproduction or immunity depending on reproductive stage. Females were given stable isotopes (¹⁵N‐leucine and ¹³C‐1‐palmitic acid), maintained on a regular diet and given either a cutaneous biopsy or a sham biopsy (control). Stable isotopes were monitored and analyzed in feces and uric acid, skin biopsies, eggs, and toe …

The Utah Statesman, October 15, 2019, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

Gelatine Cavity Dynamics Of High-Speed Sphere Impact, Akihito Kiyama, Mohammad M. Mansoor, Nathan B. Spiers, Yoshiyuki Tagawa, Tadd T. Truscott

Mechanical and Aerospace Engineering Faculty Publications

We investigate the impact and penetration of a solid sphere passing through gelatine at various impact speeds up to 143.2 m s^-1 Tests were performed with several concentrations of gelatine. Impacts for low elastic Froude number Fr_e a ratio between inertia and gelatine elasticity, resulted in rebound. Higher Fr_e values resulted in penetration, forming cavities with prominent surface textures. The overall shape of the cavities resembles those observed in water-entry experiments, yet they appear in a different order with respect to increasing inertia: rebound, quasi-seal, deep-seal, shallow-seal and surface-seal. Remarkably, similar to the We – Bo phase …

The Tail Wagging The Dog: Positive Attitude Towards Livestock Guarding Dogs Do Not Mitigate Pastoralists’ Opinions Of Wolves Or Grizzly Bears, Daniel Kinka, Julie K. Young

Wildland Resources Faculty Publications

While the re-establishment of grizzly bears (Ursus arctos) and wolves (Canis lupus) in the American West marks a success for conservation, it has been contentious among pastoralists. Coincidentally, livestock guarding dogs (LGDs; Canis familiaris) have been widely adopted by producers of domestic sheep (Ovis aries) in the United States to mitigate livestock depredation by wild carnivores. We surveyed pastoralists to measure how experience with and attitudes towards LGDs related to attitudes towards livestock predators, and found positive responses regarding LGDs and negative responses regarding wolves and grizzly bears. The more respondents agreed that …

The Utah Statesman, October 8, 2019, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

When Is Comedy Over The Line? The Departure Of Shane Gillis From Snl., Rachel Robinson-Greene

Languages, Philosophy, and Communication Studies Faculty Publications

Earlier this month, the famous sketch comedy program Saturday Night Live announced that Shane Gillis would be joining the troupe. The comedian was allegedly cast in an attempt to appeal to more conservative potential viewers. In recent years, the show has been perceived by many to have a liberal bias, and its creators wanted to draw more politically diverse viewership. Several days later, however, SNL announced that Gillis would not be joining the cast after all. The show’s representatives acknowledged that they cast Gillis on the basis of the strength of his audition, but failed to adequately vet him before …

Everyone In: A Road Map For Science-Based, Collaborative Restoration Of Western Quaking Aspen, Sue Miller

Aspen Bibliography

With concern over the health of aspen in the Intermountain West, public and private land managers need better guidance for evaluating aspen condition and selecting and implementing actions that will be effective in restoring aspen health. The Utah Forest Restoration Group collaboratively synthesized a step-by-step approach for aspen restoration that was applicable to western U.S. forests. In a successful case study in shared stewardship, these restoration guidelines were applied to a challenging real-world setting.The Monroe Mountain Aspen Ecosystem Restoration Project, addressed diverse public and private lands needs and interests using an “All Hands, All Lands” strategy. The Monroe Mountain Working …

Sustainable Manure And Compost Application: Manure Application Calculation Excel Workbook, Melanie Stock, Tiffany Maughan, Rhonda Miller

All Current Publications

Excel worksheet for manure application rate calculation.

Sustainable Manure And Compost Application: Garden And Micro Farm Guidelines, Melanie Stock, Tiffany Maughan, Rhonda Miller

All Current Publications

This fact sheet provides general information on manure and compost characteristics and a step-by-step example for calculating application rates that are appropriate for gardens and micro farms (<5 acres).

Puncturevine (Tribulus Terrestris) Identification And Management For Gardens, Lawn, And Pasture, Cody Zesiger, Corey Ransom

All Current Publications

This fact sheet describes puncturevine, a prostrate-growing annual plant that is particularly undesirable because it produces a spiny fruit that can injure animals and flatten tires. It can also be toxic to livestock and is difficult to control due to continual germination throughout the summer.