Digital Commons Network^™

Adapting Small-Farm Systems To Climate Change: Preliminary Results From Participatory Community Assessments In Bajura District, Nepal, D. Layne Coppock, Mahesh Shrestha, Nirmala Pandey, Arjun Basnet, Divakar Duwal, Dale Davis, Robert Gillies

Environment and Society Faculty Publications

Western Nepal is a remote region that is home to a wide variety of small farm and livestock production systems. Communities here lack direct access to a suitable road infrastructure, and thus are isolated from the modern world. Farm families are often poverty stricken. Western Nepal is also enduring significant climate change, resulting in warmer and drier conditions that affect crop and livestock productivity. Our research team used Participatory Rural Appraisal (PRA) to convene the members of four small-farm communities in Bajura District, identify their priority problems and analyze how the production systems function. We then connected the prioritized problems …

Can Bush-Clearing, Deferred Grazing, Or Camels Help Mitigate Climate-Change And Population Effects For Borana Pastoralists? An Economic Analysis Of Potential Interventions, Brigham Forrest, Deevon Bailey, Ruby Ward, D. Layne Coppock

Environment and Society Faculty Publications

An economic analysis of strategies to increase the resiliency of pastoral communities on the Borana Plateau is presented. Populations of people and livestock have grown in recent decades in this area. As a result of overgrazing and lack of fire, woody bush has proliferated and reduced grass forage for cattle. Droughts here are also perceived to be more frequent and severe as a result of climate change. One consequence of an increasing population and more frequent drought is that food aid has become pervasive in the system, and pastoral communities have become less resilient to drought. This analysis is based …

Watershed Fact Sheet: Improving Utah's Water Quality, Little Bear River Watershed, Usu Extension

All Current Publications

The Little Bear River drains 185,000 acres at the southern end of Cache Valley in northern Utah. The river has two main forks that travel through relatively narrow and steep valleys, meeting at the approximate midpoint of the watershed near the town of Paradise.

Benefits Of Exposing Animals To Poor-Quality Foods Early In Life, Beth Burritt

All Current Publications

This fact sheet provides research examples of how exposure early in life to poor-quality or high-toxin forages can increase intake and preference for certain forages and improve the productivity of livestock.

Chokecherry In The Garden, Sky Wiser, Tiffany Maughan, Brent Black

All Current Publications

This fact sheet describes chokecherries, recommended varieties, how to grow them, pests and diseases, and uses.

Watershed Fact Sheet: Improving Utah's Water Quality, Lower Bear River Watershed, Usu Extension

All Current Publications

The Lower Bear River watershed drains about 260,000 acres from below Cutler Dam in Cache Valley to the Bear River Migratory Bird Refuge, and ultimately to Great Salt Lake’s Willard Bay.

A Heterogenous Thermal Environment Enables Remarkable Behavioral Thermoregulation In Uta Stansburiana, Maria Goller, Franz Goller, Susannah S. French

Biology Faculty Publications

Ectotherms can attain preferred body temperatures by selecting specific temperature microhabitats within a varied thermal environment. The side-blotched lizard, Uta stansburiana may employ microhabitat selection to thermoregulate behaviorally. It is unknown to what degree habitat structural complexity provides thermal microhabitats for thermoregulation. Thermal microhabitat structure, lizard temperature, and substrate preference were simultaneously evaluated using thermal imaging. A broad range of microhabitat temperatures was available (mean range of 11°C within 1–2 m2) while mean lizard temperature was between 36°C and 38°C. Lizards selected sites that differed significantly from the mean environmental temperature, indicating behavioral thermoregulation, and maintained a temperature significantly above …

Genetic Origins Of Mercury Resistance In Great Salt Lake Microorganisms, Ashtyn Smith, Austin Wood, Chelsea Lam, Jaimi Butler, Bonnie Baxter

Utah Space Grant Consortium

Extremophiles are a diverse group of organisms, typically Bacteria and Archaea, that can inhabit extreme environments, such as geysers, deserts, and saline lakes. Their abilities to withstand extremely dry, hot, salinic, acidic, and mercuric conditions have made these microorganisms admirable astrobiological models for life on other planets¹.

Sagestep News, Spring 2014, No. 24, Sagestep

Newsletters

Seasonal newsletter of SageSTEP.

Utah State University Commencement, 2014 – Main Campus, Utah State University

Commencement Programs

127^th Annual Commencement of Utah State University.

Tremblings, May 2014, Western Aspen Alliance

Tremblings

Restoring Aspen in Rocky Mountain National Park

Therese Johnson

In 2008, when Rocky Mountain National Park’s Elk and Vegetation Management Plan (EVMP) was approved, aspen stands on primary elk range had not recruited new tree-sized stems for at least 35 years as a result of heavy elk browsing. Research showed that the distribution and abundance of aspen in the park declined during the 20th century, and modeling indicated that a continuation of high elk densities could result in the complete loss of aspen clones in high elk use areas. Aspen are rare in the park, but are important because they …

Bitácora. An Exploration Between Two Worlds>100 Illustrated Creatures, Mateo Rueda

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

Bitácora is the spanish word for log or a journal that is related to the observations explorers would make about their journeys. We observe this world around us and measure it, we write and draw about it. Modern science has taught us how insignificant we are in the universe, how abstract reality itself can be. We can only continue to wonder and keep exploring through this unsettling but delightful paradigm known as existence itself.

Effects Of Animal Science Agricultural Education Course Completion On Urban High School Students' Career Choice, Kristina Gowans

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study focused on testing the effects of agricultural education on urban high school students’ career choices. It looked into how students view agriculture, how they perceive their peers view agriculture, how their demographics are related to career choice, and if their career choice was changed to a different career upon completion of the study. The study showed a positive relationship between completing an agricultural education class in animal science and interest in going into an agricultural career. Further, females in the study were more likely to choose an agricultural career. After the completion of a school-based agricultural education program, …

Individual Gains: A Personal History Of Learning, Writing, And Teaching, Nate Whipple

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

This essay began as an attempt to understand my students. When I chose to write about the students in my writing classes, I was immersed in research for my thesis. The topic of my thesis at the time was higher education and reform in the United States. In general, voices from my research asserted, students in higher education are increasingly apathetic, lazy, negligent, and as a result are underachieving at a higher rate than ever before.

The Baker Cave Bison Remains: Bison Diminution And Late Holocene Subsistence On The Snake River Plain, Southern Idaho, Ryan P. Breslawski

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This thesis investigates that paleoecology of southern Idaho bison and their role in prehistoric subsistence with two articles. The first article investigates the trajectory of bison diminution in southern Idaho with bison morphometrics from Baker Cave, a late Holocene archaeological site. Results indicate that local bison followed a diminution trend mirroring the diminution trend documented on the Great Plains. This suggests that similar bottom up ecosystem controls acted on bison in both the Great Plains and in southern Idaho through the Holocene.

The second article examines the role of bison in seasonal subsistence strategies. I hypothesize that winter fat scarcity …

Dramatic Play Affordances Of Natural And Manufactured Outdoor Settings For Preschool-Aged Children, Kimberly K. Cloward Drown

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Concern for child wellness has led play professionals to explore natural playscapes as a means to enhance free play and consequently child development. For preschool children, dramatic or make-believe play is particularly beneficial for enhancing cognitive, social, and emotional skill. Dramatic play in collaboration with other children (sociodramatic play) and, surpassing that, complex socio-dramatic play (group make-believe with a sustained theme that uses sophisticated symbolism) are most valuable for development.

This study compared natural and manufactured outdoor play settings to determine which provided the most opportunity for quality dramatic play. Twenty-four 3- to 5- year olds were observed during daily …

Three Essays On The Economics Of Controlling Invasive Species, Yanxu Liu

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Invasive species have caused notable economic damages in agriculture, fisheries, forestry, and other industries over the past several decades. Invasive species control must therefore be designed to prevent the both the introduction and spread of invasive species. This dissertation examines the efficiency and efficacy of tariffs and inspections as a joint control mechanism at a home (i.e., importing) country's border. I find that a traditional tariff can be optimal in the short run when the invasive species level is directly related to a foreign (i.e., exporting) country's shipment size. However, in the long run a traditional tariff results in a …

The Role Of Vegetation Structure, Composition, And Nutrition In Greater Sage-Grouse Ecology In Northwestern Utah, Brian R. Wing

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The greater sage-grouse (Centrocercus urophasianus; sage-grouse) is the largest grouse species in North America and an indicator species for the condition of sagebrush (Artemisia spp.) ecosystems. The Box Elder Sage-Grouse Management Area (SGMA) in northwestern Utah encompasses one of the state’s largest sage-grouse populations.

To fill knowledge gaps regarding the population inhabiting the Raft River subunit of the Box Elder SGMA, I captured, radio-marked, and monitored 123 (68 female, 55 male) sage-grouse from January 2012 through December 2013. My purpose was to describe how the seasonal movements, survival, and reproductive rates of this sage-grouse population …

An Evaluation Of The Relative Performance Of Diploid Versus Triploid Brook Trout With Consideration Of The Influence Of Lake Characteristics, Andy Dean

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Brook trout are native to the east and Midwestern United States. Brook trout have become a popular sport fish in the western United States and are currently widely stocked to provide sport fishing opportunities throughout the west. The Utah Division of Wildlife Resources (UDWR) regularly stocks brook trout into high mountain lakes in the Uinta Mountains to provide one of these popular fisheries. Stocking non-natives to high mountain lakes can cause competition with native species for food and habitat resources and provides source populations for dispersal of non-natives downstream. Triploid (sterile) fish may provide an opportunity to stock non-native fish …

Designing An Artificial Tendon/Graft Derived From Silkworm Silk And Synthetic Spider Silk With Respect To Structure, Mechanical Properties, Biocompatibility, And Attachment, Neal Hengge

Undergraduate Honors Capstone Projects

The Achilles tendon is one of the most commonly damaged tendons in the human body (Hansen et al., 2012). Current surgical and therapeutic techniques require extended recovery time and the tendon is rarely returned to its original healthy state. For athletes in particular, strenuous rehabilitation is required to return from a serious injury like a ruptured Achilles tendon (Rosso et al., 2013).

Despite the high amount of sources for grafts to aid in surgical repair, all of the options have drawbacks such as availability, immune response, or poor mechanical properties. Spider silk has the potential to enhance current Achilles tendon …

Usu Concrete Canoe, Promontory, Nathaniel Laurence Decker

Undergraduate Honors Capstone Projects

In 1863, while the Civil War was dividing the East, a monumental project began in the West. Plans had been finalized for a railroad that would unify the country in commerce and migration. Two companies accepted the challenge of laying track across over 1700 miles of North American soil, from Sacramento, California to Omaha, Nebraska. The Union Pacific Railroad would come from the East and the Central Pacific Railroad from the West. Governor Leland Stanford of California broke ground for the project on January 8, 1863, and the line was finished at Promontory Summit, UT on May 10, 1869 (NPS, …

A Comparison Of Antlions, Bees, Darkling Beetles And Velvet Ants Across Sand Dune And Non-Sand Dune Habitats At Ash Meadows National Wildlife Refuge, Nicole F. Boehme

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Ash Meadows National Wildlife Refuge (AMNWR) supports nearly 30 organisms found nowhere else in the world. Most of these species are aquatic, dwelling in more than 50 seeps and springs within the over 24,000 acres of the refuge. Much of the research at AMNWR has centered on these unique and abundant springfed pools across the desert landscape. Many of the terrestrial habitats and species at the refuge have not been as well studied. In 2008, Bio-West, Inc. in Logan, Utah was contracted to inventory the terrestrial organisms present on the refuge. To investigate the terrestrial invertebrate fauna, with special interest …

Engaging Alternative High School Students Through The Design, Development, And Crafting Of Computationally Enhanced Pets, Maneksha Katrine Dumont

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A new kind of technology combines making in the physical world with computing in the virtual world. These technologies are simultaneously physical and virtual, require the design of artifacts like computer programs and the crafting of physical components. Combining approaches encourage youth to participate in computing who might not otherwise be interested by harnessing existing hobbies and interests. Because fluency with computing is important to success in a 21st century society, increasing the ways in which young people can experience and connect to computing is important. Computational thinking, and with it the process of debugging computer code, is an example …

Pop2: A Potential Regulator Of Hmt1-Catalyzed Arginine Methylation In Yeast, Celeste Excell

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Protein arginine methylation is an important post-translational modification that is vital in regulating various cellular processes such as gene transcription, cell signaling, and RNA processing. Protein arginine methyltransferases (PRMTs) are responsible for performing this important modification. PRMT1 (protein arginine methyltransferase 1) and Hmt1 (hnRNP methyltransferase 1) are the predominant PRMTs in humans and yeast, respectively. Despite growing momentum in this field, relatively little is understood about PRMT regulation. Further work discovering how PRMTs are regulated will greatly advance our understanding of diseases where PRMTs have been implicated, such as heart disease, viral pathogenesis, and cancer.

It has been discovered that …

Structural Change Of The Western United States Alfalfa Hay Market And Its Effect On The Western United States Dairy Industry, Joseph Patrick Cann

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Alfalfa is the fourth largest commodity grown in the Western U.S., representing 20% of the crop acreage over the past twenty years. In the last five years alfalfa hay price has doubled from what it was previously, indicating a possible structural change in the market. This research project was completed to test for this structural change using econometric analysis of the important demand components of alfalfa price. In addition to this, simulations of an average Utah dairy were completed to examine which ratio of forage crops provided the highest economic return to the operation.

To analyze the structural change of …

Nutrient Utilization, Lactational Performance, And Profitability Of Dairy Cows By Feeding Protein Supplements In High-Forage Lactation Diets, Kathryn Neal

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Due to the increasing cost of soybean meal and concerns of excess N being excreted into the environment, new protein supplements have been developed. Two products that have shown potential in increasing N utilization efficiency are slow release urea (SRU; Optigen) and ruminal escape protein derived from yeast (YMP; DEMP). The objective of this study was to assess the effects of feeding these 2 supplements in high-forage [(54% of total dietary dry matter (DM)] dairy diets on nutrient utilization, feed efficiency, lactational performance of dairy cows, and their impacts on income-over feed costs. Twelve …

Evaluation Of Composting Of Municipal Solid Waste, J. Ryan Stebbins

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Millions of tons of organic waste are lost each year by being deposited in landfills instead of being composted. Composting would increase the life of landfills and reduce the loss of renewable resources. Current composting techniques take approximately 6 months to break down the organic components, such as yard trimmings and food waste. In addition, a large amount of area is required for the windrows piles. Recycling techniques help to separate organics, such as yard trimmings and food waste, from the municipal solid waste (MSW) stream for composting. However, these techniques are time consuming, costly, and not extensively practiced. Since …

Phosphorus Mobility In The Shallow Unconfined Aquifer At Pineview Reservoir, Utah, Christine Rumsey

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Significant phosphorus transport is occurring in the groundwater surrounding Pineview Reservoir. A set of investigations was completed to identify factors contributing to phosphorus mobility. Water quality monitoring was conducted to understand groundwater characteristics and phosphorus movement. Several water quality parameters were evaluated to specifically determine whether septic systems influence groundwater quality. Results indicate that septic systems pollute at least two locations in the aquifer around the reservoir. Given this information, it may be necessary to implement advanced septic system treatment options to reduce the amount of phosphorus in groundwater.

Experiments were conducted on two aquifer sediment types to identify factors …

Physically Based Preconditioning Techniques Applied To The First Order Particle Transport And To Fluid Transport In Porous Media, Michael Rigley

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Solving linear systems is at the heart of many scientific applications from the PreAlgebra's student solving for x and y for basic geometry problems to the computational scientist solving billions of equations with billions of variables for weather forecasting, modeling fusion reactions, or web search algorithms. In this study we look at improving the efficiency of solving large linear systems that result from two applications. The first includes linear systems that result from solving differential equations for the movement of atomic particles in particle emitting, void, and absorbing regions. The second includes solving linear systems that result from solving differential …

Analysis Of Building Resiliency In An Ethiopian Pastoral System: Mitigating The Effects Of Population And Climate Change On Food Insecurity, Brigham Forrest

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Worldwide expenditures on international development in the form of assistance or “aid” have continued to increase as developed countries look to both help and influence developing countries. In 2011, more than $140 billion in development aid was distributed globally, more than double the amount expended for international development aid in 2003. Many of the countries that are in need of aid have governments that do not have the resources, the experience, political stability, or well-functioning institutions to effect long-term structural change to bring their people out of poverty.

Ethiopia is a country receiving large amounts of development aid, and one …