Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

Utah State University

Discipline
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 2401 - 2430 of 13539

Full-Text Articles in Entire DC Network

The Factors Affecting Wind Erosion In Southern Utah, Mehmet Ozturk Aug 2019

The Factors Affecting Wind Erosion In Southern Utah, Mehmet Ozturk

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Wind erosion is a global issue and affecting millions of people in drylands by causing environmental issues (acceleration of snow melting), public health concerns (respiratory diseases), and socioeconomic problems (costs of damages and cleaning public properties after dust storms). Disturbances in drylands can be irreversible, thus leading to natural disasters such as the 1930s Dust Bowl. With increasing attention on aeolian studies, many studies have been conducted using ground-based measurements or wind tunnel studies. Ground-based measurements are important for validating model predictions and testing the effect and interactions of different factors known to affect wind erosion. Here, a machine-learning model …

Go to article

Evaluating The Effectiveness Of Livestock Guardian Dogs: Loss-Prevention, Behavior, Space-Use, And Human Dimensions, Daniel Kinka Aug 2019

Evaluating The Effectiveness Of Livestock Guardian Dogs: Loss-Prevention, Behavior, Space-Use, And Human Dimensions, Daniel Kinka

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Livestock guardian dogs – or “LGDs” – are commonly used by domestic sheep ranchers and reduce the need for killing wild carnivores to protect livestock. LGDs are mostly used in the United States to reduce the number of livestock killed by coyotes, but whether they can prevent killing by larger carnivores like wolves and grizzly bears is unclear. It is important to identify which behavioral traits and LGD breeds work best for guarding livestock so that ranchers can protect their stock and environmentalists can enjoy a greater number of wild animals on the landscape. This study investigated the effectiveness of …

Go to article

Utah Water Watch Volunteer Monitoring Manual, Nancy Mesner, Brian Green, Eli Robinson, Ellen Bailey, Cade Andrus, Jose Pacheco Aug 2019

Utah Water Watch Volunteer Monitoring Manual, Nancy Mesner, Brian Green, Eli Robinson, Ellen Bailey, Cade Andrus, Jose Pacheco

All Current Publications

This manual is part of the training for Utah Water Watch volunteers.

Go to article

Ruminant Bloat, Austin Sears, Kerry A. Rood Aug 2019

Ruminant Bloat, Austin Sears, Kerry A. Rood

All Current Publications

This fact sheet describes bloat, a non-infectious disease common among the ruminant species, including types and clinical signs, prevention, and treatment.

Go to article

User Guide For The 4-H Livestock Weight Calculators, Cody Zesiger, Joshua Dallin, Matthew D. Garcia, Nicole Reed Aug 2019

User Guide For The 4-H Livestock Weight Calculators, Cody Zesiger, Joshua Dallin, Matthew D. Garcia, Nicole Reed

All Current Publications

This fact sheet is a user's guide for the 4-H livestock weight calculators.

Go to article

4-H Career Readiness - Animal, Dairy And Veterinary Sciences, Bioveterinary Science Emphasis, Joshua Dallin, Kelsey Romney Aug 2019

4-H Career Readiness - Animal, Dairy And Veterinary Sciences, Bioveterinary Science Emphasis, Joshua Dallin, Kelsey Romney

All Current Publications

This brochure gives 4-H members information about preparing for careers in Animal, dairy and veterinary science, with a bioveterinary emphasis.

Go to article

4-H Career Readiness - Animal, Dairy And Veterinary Sciences, Equine And Management Emphasis, Joshua Dallin, Kelsey Romney Aug 2019

4-H Career Readiness - Animal, Dairy And Veterinary Sciences, Equine And Management Emphasis, Joshua Dallin, Kelsey Romney

All Current Publications

This brochure gives 4-H members information about preparing for careers in animal, dairy and veterinary science, with equine and management emphasis.

Go to article

4-H Career Readiness- Animal, Dairy And Veterinary Sciences, Animal And Dairy Science Emphasis, Joshua Dallin, Kelsey Romney Aug 2019

4-H Career Readiness- Animal, Dairy And Veterinary Sciences, Animal And Dairy Science Emphasis, Joshua Dallin, Kelsey Romney

All Current Publications

This brochure gives 4-H members information about preparing for careers in animal and dairy science..

Go to article

4-H Career Readiness - Animal, Dairy And Veterinary Sciences, Biotechnology Emphasis, Joshua Dallin, Kelsey Romney Aug 2019

4-H Career Readiness - Animal, Dairy And Veterinary Sciences, Biotechnology Emphasis, Joshua Dallin, Kelsey Romney

All Current Publications

This brochure gives 4-H members information about preparing for careers in Animal, dairy and veterinary science, with a biotechnology emphasis.

Go to article

Grazing And Harvest Efficiency Of Forage By Cattle On Western Rangelands, Ruger Carter, Eric Thacker, Kevin Heaton, Beth Burritt Aug 2019

Grazing And Harvest Efficiency Of Forage By Cattle On Western Rangelands, Ruger Carter, Eric Thacker, Kevin Heaton, Beth Burritt

All Current Publications

This fact sheet provides guidelines for land managers to reach an appropriate level of utilization that increases animal and rangeland health.

Go to article

Grad Student Credits Cpd Programs, Equipment For Enriching His Life, Jolynne Lyon Jul 2019

Grad Student Credits Cpd Programs, Equipment For Enriching His Life, Jolynne Lyon

Blog Posts

The blog post is about how CPD programs improved a Grad Students’ life.

Go to article

Current-Use Pesticides In New Zealand Streams: Comparing Results From Grab Samples And Three Types Of Passive Samplers, Kimberly J. Hageman, Christopher H.F. Aebig, Kim Hoang Luong, Sarit L. Kaserzon, Charles S. Wong, Tim Reeks, Michelle Greenwood, Samuel Macaulay, Christoph D. Matthaei Jul 2019

Current-Use Pesticides In New Zealand Streams: Comparing Results From Grab Samples And Three Types Of Passive Samplers, Kimberly J. Hageman, Christopher H.F. Aebig, Kim Hoang Luong, Sarit L. Kaserzon, Charles S. Wong, Tim Reeks, Michelle Greenwood, Samuel Macaulay, Christoph D. Matthaei

Chemistry and Biochemistry Faculty Publications

New Zealand uses more than a ton of pesticides each year; many of these are mobile, relatively persistent, and can make their way into waterways. While considerable effort goes into monitoring nutrients in agricultural streams and programs exist to monitor pesticides in groundwater, very little is known about pesticide detection frequencies, concentrations, or their potential impacts in New Zealand streams. We used the ‘Polar Organic Chemical Integrative Sampler’ (POCIS) approach and grab water sampling to survey pesticide concentrations in 36 agricultural streams in Waikato, Canterbury, Otago and Southland during a period of stable stream flows in Austral summer 2017/18. We …

Go to article

Moral And Existential Lessons From Chernobyl, Rachel Robinson-Greene Jul 2019

Moral And Existential Lessons From Chernobyl, Rachel Robinson-Greene

Languages, Philosophy, and Communication Studies Faculty Publications

HBO’s five-part mini-series documenting the 1986 nuclear power plant disaster in the Soviet Union is powerful because of the existential and moral messages it conveys—critical messages for our time.

Go to article

Thresholds Are In The Eye Of The Beholder: Plants And Wildlife Respond Differently To Short‐Term Cattle Corrals, Kari E. Veblen, Lauren M. Porensky Jul 2019

Thresholds Are In The Eye Of The Beholder: Plants And Wildlife Respond Differently To Short‐Term Cattle Corrals, Kari E. Veblen, Lauren M. Porensky

Wildland Resources Faculty Publications

Rangelands are governed by threshold dynamics, and factors such as drought, wildfire, and herbivory can drive change across thresholds and between ecological states. Most work on this topic has focused on shifts in a single response variable, vegetation, and little research has considered how to reconcile responses of more than one variable to determine whether a system has undergone a genuine state change. In sub‐Saharan Africa, mobile overnight livestock corrals (bomas) can be used by managers to precipitate ecological transitions from areas dominated by bare ground to productive ecosystem hotspots (glades) that are attractive to wild herbivores. We asked how …

Go to article

Full Issue: Journal On Empowering Teaching Excellence, Volume 3, Issue 1, Kim Hales Jul 2019

Full Issue: Journal On Empowering Teaching Excellence, Volume 3, Issue 1, Kim Hales

Journal on Empowering Teaching Excellence

The full Spring 2019 issue (Volume 3, Issue 1) of the Journal on Empowering Teaching Excellence, Spring 2019

Go to article

Basal Diet Determined Long-Term Composition Of The Gut Microbiome And Mouse Phenotype To A Greater Extent Than Fecal Microbiome Transfer From Lean Or Obese Human Donors, Daphne Michelle Rodriguez Jimenez, Abby D. Benninghoff, Niklas D.J. Aardema, Sumira Phatak, Korry J. Hintze Jul 2019

Basal Diet Determined Long-Term Composition Of The Gut Microbiome And Mouse Phenotype To A Greater Extent Than Fecal Microbiome Transfer From Lean Or Obese Human Donors, Daphne Michelle Rodriguez Jimenez, Abby D. Benninghoff, Niklas D.J. Aardema, Sumira Phatak, Korry J. Hintze

Animal, Dairy, and Veterinary Science Faculty Publications

The Western dietary pattern can alter the gut microbiome and cause obesity and metabolic disorders. To examine the interactions between diet, the microbiome, and obesity, we transplanted gut microbiota from lean or obese human donors into mice fed one of three diets for 22 weeks: (1) a control AIN93G diet; (2) the total Western diet (TWD), which mimics the American diet; or (3) a 45% high-fat diet-induced obesity (DIO) diet. We hypothesized that a fecal microbiome transfer (FMT) from obese donors would lead to an obese phenotype and aberrant glucose metabolism in recipient mice that would be exacerbated by consumption …

Go to article

Plant Based Meat Substitutes, Sensational Reporting, And Information Literacy, Rachel Robinson-Greene Jul 2019

Plant Based Meat Substitutes, Sensational Reporting, And Information Literacy, Rachel Robinson-Greene

Languages, Philosophy, and Communication Studies Faculty Publications

2019 has been a good year for plant-based meat replacements. In January, Carl’s Junior launched their Beyond Famous Star Burger, made with the plant-based Beyond Meat. The Mexican food franchise Del Taco launched tacos made with Beyond Meat at all of their franchises in April. The introduction of the vegan alternative has been a smash success, leading the company to release two additional products made with Beyond Meat to their menu in June of this year. Many other restaurants have recognized the consumer interest in meat-free options. Restaurants such as Burger King, White Castle, A&W, and Red Robin offer products …

Go to article

A Rolling Perspective: Live Streaming Now!, Jennifer Holland Jul 2019

A Rolling Perspective: Live Streaming Now!, Jennifer Holland

Blog Posts

The blog post is about live streaming.

Go to article

Should I Stay Or Should I Go? The Emergence Of Partitioned Land Use Among Human Foragers, Jacob Freeman, John M. Anderies, Raymond P. Mauldin, Robert J. Hard Jul 2019

Should I Stay Or Should I Go? The Emergence Of Partitioned Land Use Among Human Foragers, Jacob Freeman, John M. Anderies, Raymond P. Mauldin, Robert J. Hard

Sociology, Social Work and Anthropology Faculty Publications

Taking inspiration from the archaeology of the Texas Coastal Plain (TCP), we develop an ecological theory of population distribution among mobile hunter-gatherers. This theory proposes that, due to the heterogeneity of resources in space and time, foragers create networks of habitats that they access through residential cycling and shared knowledge. The degree of cycling that individuals exhibit in creating networks of habitats, encoded through social relationships, depends on the relative scarcity of resources and fluctuations in those resources. Using a dynamic model of hunter-gatherer population distribution, we illustrate that increases in population density, coupled with shocks to a biophysical or …

Go to article

Fall Tillage Reduced Nutrient Loads From Liquid Manure Application During The Freezing Season, Melanie N. Stock, Francisco J. Arriaga, Peter A. Vadas, Laura Ward Good, Michael D. Casler, Krishnapuram G. Karthikeyan, Zachariah P. Zopp Jul 2019

Fall Tillage Reduced Nutrient Loads From Liquid Manure Application During The Freezing Season, Melanie N. Stock, Francisco J. Arriaga, Peter A. Vadas, Laura Ward Good, Michael D. Casler, Krishnapuram G. Karthikeyan, Zachariah P. Zopp

Plants, Soils, and Climate Faculty Publications

Reducing agricultural runoff is important year round, particularly on landscapes that receive wintertime applications of manure. No-tillage systems are typically associated with reduced runoff loads during the growing season, but surface roughness from fall tillage may aid infiltration on frozen soils by providing surface depressional storage. The timing of winter manure applications may also affect runoff, depending on snow and soil frost conditions. Therefore, the objective of this study was to evaluate runoff and nutrient loads during the freezing season from combinations of tillage and manure application timings. Six management treatments were tested in south-central Wisconsin during the winters of …

Go to article

Persistence And Conspecific Observations Improve Problem-Solving Abilities Of Coyotes, Julie K. Young, Laura Touzot, Stacey P. Brummer Jul 2019

Persistence And Conspecific Observations Improve Problem-Solving Abilities Of Coyotes, Julie K. Young, Laura Touzot, Stacey P. Brummer

Wildland Resources Faculty Publications

Social learning has important ecological and evolutionary consequences but the role of certain factors, such as social rank, neophobia (i.e., avoidance of novel stimuli), persistence, and task-reward association, remain less understood. We examined the role of these factors in social learning by captive coyotes (Canis latrans) via three studies. Study 1 involved individual animals and eliminated object neophobia by familiarizing the subjects to the testing apparatus prior to testing. Studies 2 and 3 used mated pairs to assess social rank, and included object neophobia, but differed in that study 3 decoupled the food reward from the testing apparatus …

Go to article

Tour De France Pelotons Governed By Sight, Not Aerodynamics | College Of Engineering, Utah State University Jul 2019

Tour De France Pelotons Governed By Sight, Not Aerodynamics | College Of Engineering, Utah State University

College of Engineering News

The 2019 Tour de France has just begun. As 190 riders speed through the streets of France, spectators will marvel at the tightly-packed formation of cyclists known as the peloton. Fans will argue that a peloton creates an aerodynamic advantage, allowing riders to conserve energy throughout the grueling three-week race.

Go to article

How Vision Governs The Collective Behaviour Of Dense Cycling Pelotons, J. Belden, Mohammad M. Mansoor, A. Hellum, S. R. Rahman, A. Meyer, C. Pease, J. Pacheco, S. Koziol, Tadd T. Truscott Jul 2019

How Vision Governs The Collective Behaviour Of Dense Cycling Pelotons, J. Belden, Mohammad M. Mansoor, A. Hellum, S. R. Rahman, A. Meyer, C. Pease, J. Pacheco, S. Koziol, Tadd T. Truscott

Mechanical and Aerospace Engineering Faculty Publications

In densely packed groups demonstrating collective behaviour, such as bird flocks, fish schools or packs of bicycle racers (cycling pelotons), information propagates over a network, with individuals sensing and reacting to stimuli over relatively short space and time scales. What remains elusive is a robust, mechanistic understanding of how sensory system properties affect interactions, information propagation and emergent behaviour. Here, we show through direct observation how the spatio-temporal limits of the human visual sensory system govern local interactions and set the network structure in large, dense collections of cyclists. We found that cyclists align in patterns within a ± 30° …

Go to article

Uncovering The Natural History Of The Bromeligenous Frog Crossodactylodes Izecksohni (Leptodactylidae, Paratelmatobiinae), Rodrigo Barbosa Ferreira, Alexander T. Mônico, Cássio Z. Zocca, Marcus Thadeu T. Santos, Fernanda C.F. Lírio, João F.R. Tonini, Leandro T. Sabagh, Rafael S. Cipriano, Cecilia Waichert, Martha L. Crump, Karen H. Beard, Luís Felipe Toledo, Charles Duca Jul 2019

Uncovering The Natural History Of The Bromeligenous Frog Crossodactylodes Izecksohni (Leptodactylidae, Paratelmatobiinae), Rodrigo Barbosa Ferreira, Alexander T. Mônico, Cássio Z. Zocca, Marcus Thadeu T. Santos, Fernanda C.F. Lírio, João F.R. Tonini, Leandro T. Sabagh, Rafael S. Cipriano, Cecilia Waichert, Martha L. Crump, Karen H. Beard, Luís Felipe Toledo, Charles Duca

Wildland Resources Faculty Publications

Leptodactylidae consists of more than 200 described species distributed throughout the Neotropics. The five species in the genus Crossodactylodes are the only species in this family that complete their entire life cycle in rainwater accumulated between bromeliad leaves. We surveyed bromeliads for Crossodactylodes izecksohni in its type locality: the municipality of Santa Teresa, Brazil's Atlantic Forest. We found C. Izecksohni in 12 species of bromeliads. The sex ratio was approximately 1:1. Males were distinguished from females by hypertrophy of upper and forearms and the presence of nuptial pads formed by well-developed spines on the first finger. Eggs, tadpoles, juveniles, and …

Go to article

Guidelines For Aspen Restoration In Utah With Applicability To The Intermountain West, Stanley G. Kitchen, Patrick N. Behrens, Sherel K. Goodrich, Ashley Green, John Guyon, Mary O'Brien, David Tart Jul 2019

Guidelines For Aspen Restoration In Utah With Applicability To The Intermountain West, Stanley G. Kitchen, Patrick N. Behrens, Sherel K. Goodrich, Ashley Green, John Guyon, Mary O'Brien, David Tart

Aspen Bibliography

As highly productive and biologically diverse communities, healthy quaking aspen (Populus tremuloides; hereafter aspen) forests provide a wide range of ecosystem services across western North America. Western aspen decline during the last century has been attributed to several causes and their interactions, including altered fire regimes, drought, excessive use by domestic and wild ungulates, and conifer encroachment. Today’s managers need science-based guidance to develop and implement strategies and practices to restore structure, processes, and resilience to the full range of aspen functional types across multiple spatial scales. In these guidelines, we detail a process for making step-by-step decisions …

Go to article

Oystershell (Mussel) Scale (Lepidosaphes Ulmi), Jay B. Karren, Alan H. Roe, Ryan Davis Jul 2019

Oystershell (Mussel) Scale (Lepidosaphes Ulmi), Jay B. Karren, Alan H. Roe, Ryan Davis

All Current Publications

The oystershell scale belongs to a group of insects called the armored scales. The adult insect is enclosed in a shell made up of its own shed skins and waxy secretions. Under this covering is a sac-like animal that is quite different in appearance from most insects. It has no legs, eyes, or antennae.

Go to article

Detection And Relative Distribution Of Ringtails (Bassaricus Astutus) In Zion National Park, Utah, Adrian A. Roadman, S. Nicki Frey Jul 2019

Detection And Relative Distribution Of Ringtails (Bassaricus Astutus) In Zion National Park, Utah, Adrian A. Roadman, S. Nicki Frey

All Current Publications

Very little is known about ringtails (Bassariscus astutus) in Zion National Park), including their distribution within park boundaries. We combined trail cameras and a novel track plate method to determine the occupancy and distribution of ringtails in Zion National Park, in southwestern Utah. Both methods successfully detected ringtails in various habitats sampled.

Go to article

Intermountain Beef Cow/Calf Management Calendar, C. Kim Chapman, Matthew D. Garcia, Ryan Larsen, Kerry A. Rood Jul 2019

Intermountain Beef Cow/Calf Management Calendar, C. Kim Chapman, Matthew D. Garcia, Ryan Larsen, Kerry A. Rood

All Current Publications

This calendar gives beef cow/calf management tips for nutrition, animal health, finance, and public lands information for each month of the year.

Go to article

Sweet As . . . Sucralose: The Pros And Cons Of Artificial Sweeteners, John Pettit, Carrie Durward, Heidi Wengreen Jul 2019

Sweet As . . . Sucralose: The Pros And Cons Of Artificial Sweeteners, John Pettit, Carrie Durward, Heidi Wengreen

All Current Publications

This fact sheet is a basic overview of artificial sweeteners, including what they are, why they are popular, and how they affect health. It is specifically intended for people with diabetes, individuals interested in lowering caloric intake, and other consumers wondering whether or not they should be worried about using artificial sweeteners.

Go to article

Comparison Of Modelling Approaches For Development Of Discharge Rating Curves For Spillway/Bridge Combinations, Nathan Young Jun 2019

Comparison Of Modelling Approaches For Development Of Discharge Rating Curves For Spillway/Bridge Combinations, Nathan Young

International Junior Researcher and Engineer Workshop on Hydraulic Structures

When estimating spillway discharge rating curves, engineers can use a variety of methods such as empirical equations, one- (1D) or two-dimensional (2D) hydraulic computer models, or a combination thereof; however, conservative assumptions are often applied to such methods. The use of three-dimensional (3D) computational fluid dynamics (CFD) models is an alternative modelling approach that can often better estimate spillway discharge rating curves, especially for complex flow situations. In this study, the results of 3D CFD models are compared to estimates of spillway discharge rating curves developed with a combination of empirical equations and other hydraulic computer models for spillway/bridge combinations. …

Go to article

First Prev Next Last