Digital Commons Network^™

Greater Sage-Grouse Response To Sagebrush Reduction Treatments In Rich County, Utah, Roger Blair Stringham

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Management of greater sage-grouse (Centrocercus urophasianus) in the west has changed over the last several decades in response to environmental and anthropogenic causes. Many land and wildlife management agencies have begun manipulating sagebrush with herbicides, machinery, and fire. The intent of these manipulations (treatments) is to reduce sagebrush canopy cover and increase the density of grass and forb species, thus providing higher quality sage-grouse brood-rearing habitat. However, monitoring of sage-grouse response to such manipulations has often been lacking or non-existent. The objective of our study was to determine the response of sage-grouse to sagebrush reduction treatments that have …

Ecology Of Isolated Greater Sage-Grouse Populations Inhabiting The Wildcat Knolls And Horn Mountain, Southcentral Utah, Christopher J. Perkins

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Greater sage-grouse (Centrocercus urophasianus) currently inhabit about 56% of pre-settlement distribution of potential habitat. In 2005, the Castle Country Adaptive Resources Management Local Working Group (CaCoARM) was formed to address concerns regarding local sage-grouse populations in Carbon and Emery counties. In 2006-2007, CaCoARM identified the Wildcat Knolls and Horn Mountain as areas of special concern for greater sage-grouse conservation. Both sites selected by the group were inhabited by what appeared to be small isolated sage-grouse populations. Factors limiting small isolated greater sage-grouse populations throughout its range are diverse and largely site-specific.

During 2008-2009, I captured, radio-collared, and monitored …

Natural History And Breeding System Of Maguire Primrose, Jacob B. Davidson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The goal of this thesis was to examine the breeding system and natural history of the Maguire primrose (Primula cusickiana var. maguirei). Maguire primrose is an endemic, threatened subspecies found only along a narrow corridor within Logan Canyon in northern Utah, USA. This plant displays distinct flower distyly, with clear distinction of pin and thrum morphologies (morphs). The timing of Maguire primrose flower blooms was disparate between upper and lower canyon populations, and the flowers experienced cool temperatures occasionally. I captured eight different species of flying insects visiting Maguire primrose flowers, and made 67 observations of insect visitation. …

The Pursuit Of An Unequivocal Primary Representation, Delroy A. Brinkerhoff

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A chief human characteristic is the desire and ability to change the world. Prior planning is crucial when those changes are complex and extensive, and require the cooperation of many people. To satisfy this need, many disciplines have developed specialized notations for representing the plans. Developers in one discipline, computer-based instruction, are burdened by the current need to use two separate notations. Instructional experts design the instruction and represent the design with a primary representation. The instruction described in a primary representation is easy to see, which makes the representation suitable for evaluation, communication, and enhancement. Programmers translate the primary …

Role Of Protein Kinase C Isotypes In 1,25-Dihydroxyvitamin D3 Mediated Signal Transduction Through The 1,25d3 Membrane Associated, Rapid Response Steroid Binding Receptors In Chick Intestinal Cells, Sakara Tunsophon

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

It is now accepted that 1,25(OH)2D3 mediates its rapid actions on the control of phosphate and calcium homeostasis through its membrane receptor termed the 1,25D3-MARRS (membrane associated rapid response steroid binding) protein. I determined the various PKC isotypes involved in the rapid regulation of phosphate uptake and calcium extrusion in chick intestinal cells. 1,25(OH)2D3-mediated phosphate uptake was stimulated within 1 min after addition of the hormone. Western blot analyses on isolated intestinal cells treated with steroid hormone resulted in dose-dependent increases in PKC alpha and PKC beta in postnuclear centrifugation fractions, but not in the low speed centrifugation fractions. The …

A Multi-Scale Evaluation Of Pygmy Rabbit Space Use In A Managed Landscape, Tammy L. Wilson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Habitat selection has long been viewed as a multi-scale process. Observed species responses to resource gradients are influenced by variation at the scale of the individual, population, metapopulation, and geographic range. Understanding how species interact with habitat at multiple levels presents a complete picture of an organism and is necessary for conservation of endangered species. The main goal of this dissertation is to evaluate distribution, relative abundance, and habitat selection of a rare species, the pygmy rabbit Brachylagus idahoensis, at multiple scales in order to improve management and conservation for this species.

At the broadest scale, pygmy rabbit occurrence …

The Influence Of Collective Action And Policy In The Development Of Local Food Systems, Lori Porreca

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The modern global agrifood system has had significant negative impacts on consumers and producers. This has precipitated the rise of local food systems that are purported to improve the health and livelihoods of consumers and producers. High expectations have led to significant public and private resources dedicated to the development of local food systems. Despite this, there has been little systematic research exploring the social and institutional conditions that facilitate or frustrate local food system development.

Using a comparative case study approach, this study explored the ways local structural conditions, collective action, food system policies, and the political context affect …

Examination Of Behavioral Momentum With Staff As Contextual Variables In Applied Settings With Children With Autism, Mark P. Groskreutz

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Behavioral momentum theory proposes that the persistence of behavior when exposed to disruptors provides an appropriate measure of the strength of behavior. Basic research has consistently demonstrated that behaviors that occurred in a context with higher overall rates of reinforcement (rich contexts) were more persistent than other behaviors that have occurred in a context with relatively lower rates of reinforcement (lean contexts). More surprisingly, behavioral momentum theory goes on to assert that this greater persistence in richer contexts is found even when rate of responding is lower in the rich context, and when the greater richness is due to noncontingent …

Language Brokering In Latino Families: Direct Observations Of Brokering Patterns, Parent-Child Interactions, And Relationship Quality, Kee J. E. Straits

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

With the growing percentage of immigrant families in the USA, language transition is a common immigrant experience and can occur rapidly from generation to generation within a family. Child language brokering appears to occur within minority language families as one way of negotiating language and cultural differences; however, the phenomenon of children translating or mediating language interactions for parents has previously been hypothesized to contribute to negative outcomes for children, such as role-reversals and parentification, emotional distancing and lack of communication, increased parent-child conflict, and increased internalizing/externalizing disorders. The current study used direct observations of 60 Spanish-speaking parent-child dyads (30 …

The Influence Of Landscape And Weather On Foraging By Olfactory Meso-Predators In Utah, Rebekah E. Dritz

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Predation by olfactory meso-predators has a large impact on avian nest success, particularly for ground-nesting waterfowl. Olfactory predators rely on odors to locate their prey. Weather conditions (e.g. wind speed, humidity, and temperature), vegetation, and landscape features affect the dissipation rate of odors and could affect the foraging efficiency of olfactory predators. I conducted 2 studies to determine if weather and landscape impact predator foraging ability and behavior: a predator survey study and an artificial nest study. The objective of the predator survey was to investigate how landscape and weather conditions interact to influence the distribution of olfactory meso-predators [e.g. …

Planning For Closure Of The Logan City/Cache County Landfill And Surrounding Landscape, Kristofor Lee Kvarfordt

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Planning for closure requires in depth analysis into many operational, environmental, and social factors. Ideally, the planning process should resolve as many of the technical, social, and aesthetic requirements as possible by systematically addressing the various elements that influence the final design. This research identified the significant issues related to planning for the end use of the current Logan landfill after it reaches capacity in 18-20 years and the associated lagoons and wetlands. The current closure plan calls for simply recontouring the landfill to stabilize the slopes, then revegetating. The location of the site has serious implications for environmental impact …

Development Of Novel Methods And Their Utilization In The Analysis Of The Effect Of The N-Terminus Of Human Protein Arginine Methyltransferase 1 Variant 1 On Enzymatic Activity, Protein-Protein Interactions, And Substrate Specificity, Brenda Bienka Suh-Lailam

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Protein arginine methyltransferases (PRMTs) are enzymes that catalyze the methylation of protein arginine residues, resulting in the formation of monomethylarginine, and/or asymmetric or symmetric dimethylarginines. Although understanding of the PRMTs has grown rapidly over the last few years, several challenges still remain in the PRMT field. Here, we describe the development of two techniques that will be very useful in investigating PRMT regulation, small molecule inhibition, oligomerization, protein-protein interaction, and substrate specificity, which will ultimately lead to the advancement of the PRMT field. Studies have shown that having an N-terminal tag can influence enzyme activity and substrate specificity. The first …

Power, Structure, Gender Relations And Community-Based Conservation: The Cawswe Study Of The Sariska Region, Rajasthan, India, Maria Costanza Torri

Journal of International Women's Studies

Most current community development projects have a built in gender component. Despite the WID, WED and GAD schools of thought there is still however a long way to go in order to effectively implement these principles in conservation projects. Merely getting women a place on the policy-making agenda is not enough, especially if it comes at the cost of promoting a simplistic and often wildly inaccurate picture of gender-environment relations. This article analyses the repercussions of community-based conservation on women in terms of use, access, and control of natural resources. The area chosen is the Sariska region of Rajasthan, India. …

From Discovery To Dissidence: Honduran Women’S Conceptions And Claims Of Human Rights, Christine Gervais

Journal of International Women's Studies

In recognition of the profound benefits of women’s engagement with their rights, this article presents an experiential account of how Honduran women comprehend, articulate, experience and advocate human rights and gender equality through non-governmental educational initiatives. Through the triangulated analytic among human security, post-victimization and citizen-based advocacy approaches, the article traces the women’s journeys from their moments of discovery of human rights towards instances of dissidence. In so doing, the women’s demonstrations of empowerment, agency, resistance and solidarity are brought to the fore. By featuring their voices, this study demonstrates how Honduran women are able to shape their own expectations …

Gender Analysis Of Women In The Philippine Agriculture And Their Occupational Issues, Jinky Leilanie Lu

Journal of International Women's Studies

Feminist research shows how gender, in interaction with other socioeconomic differentiation theories on class and ethnicity, influences agrarian transition, health patterns, and economic development. In the highland community where this study was conducted, women play a very important role in the production of vegetables and crops. At the same time, there are hazards facing these women predisposing them to certain occupational health issues. As such, this research study aimed to look into occupational issues of women, as well as certain cultural, political, socio-economic perceptions and attributes that affect women’s occupational issues. 251 women farmers from identified communities using cluster sampling …

Effect Of Indomethacin On Bile Acid-Phospholipid Interactions: Implication For Small Intestinal Injury Induced By Nonsteroidal Anti-Inflammatory Drugs

Faculty, Staff and Student Publications

The injurious effect of nonsteroidal anti-inflammatory drugs (NSAIDs) in the small intestine was not appreciated until the widespread use of capsule endoscopy. Animal studies found that NSAID-induced small intestinal injury depends on the ability of these drugs to be secreted into the bile. Because the individual toxicity of amphiphilic bile acids and NSAIDs directly correlates with their interactions with phospholipid membranes, we propose that the presence of both NSAIDs and bile acids alters their individual physicochemical properties and enhances the disruptive effect on cell membranes and overall cytotoxicity. We utilized in vitro gastric AGS and intestinal IEC-6 cells and found …

Perfusion In Rat Brain At 7 T With Arterial Spin Labeling Using Fair-Truefisp And Quipss

Faculty, Staff and Student Publications

Measurement of perfusion in longitudinal studies allows for the assessment of tissue integrity and the detection of subtle pathologies. In this work, the feasibility of measuring brain perfusion in rats with high spatial resolution using arterial spin labeling is reported. A flow-sensitive alternating recovery sequence, coupled with a balanced gradient fast imaging with steady-state precession readout section was used to minimize ghosting and geometric distortions, while achieving high signal-to-noise ratio. The quantitative imaging of perfusion using a single subtraction method was implemented to address the effects of variable transit delays between the labeling of spins and their arrival at the …

Comment On Degenova's "Management Of Quality": Flight Of The Unfixed, Stefano Harney

Research Collection Lee Kong Chian School Of Business

Nick DeGenova’s study does more than expose the poverty of intersectionality—that sociological theory that posits the importance of considering race, class, and gender and sexuality together as they interact with each other as independent variables. It allows us to move from the most common and least correct criticism of intersectionality, that it is a theory that contains class within a functionalist sociological universe, to a much bolder contention. The contention is this: class contains. It is class that contains the surplus, the commons, of race, gender and sexuality. It is class that tames. This is because class is the category …

Home On The Plains: An Examination Of Place At Agate Fossil Beds National Monument Through Chipped Stone Tool Analysis, Cynthia J. Wiley

Department of Anthropology: Theses and Student Research

Recent archaeological research in High Plains archaeology focuses on aspects of landscape and identifying areas that likely registered as “places” in the minds of past peoples. Agate Fossil Beds National Monument in Sioux County, Nebraska is located in an area wealthy in multi-component sites and a rich research history. Yet so many of the features common at neighboring sites are missing from this area. Based on what Agate Fossil Beds National Monument lacks, researchers refer to this area as transitional, merely a crossroads between places.

However, Agate Fossil Beds National Monument contains multiple desirable resources such as a perennial water …

Hanseatic Cogs And Baltic Trade: Interrelations Between Trade Technology And Ecology, Jillian R. Smith

Department of Anthropology: Theses and Student Research

The Hanseatic League was the major commercial power in northern Europe from the twelfth through the fifteenth centuries. During this time, it grew to encompass the coasts of the North and Baltic Seas and maintained economic influence over key areas on the European continent. From the inception of the Hanseatic League until the midfifteenth century, one ship type dominated the inland and overseas trade: the Cog. Cog design remained fairly constant throughout the period in spite of the great geographical variation present within the Hanseatic League. Cogs became increasingly larger throughout the period, requiring a greater amount of oak timber …

Trade Liberalization, Corn Prices And A Rural Community In Guatemala, José N. Cabrera-Schneider

Department of Anthropology: Theses and Student Research

Trade liberalization policies in Guatemala have impacted agricultural production. This thesis focuses on how trade liberalization has happened, what have been the impacts at a national level and describes how a community has adapted to the implementation of these policies. The implementation of trade was influenced by several, international and national institutions. Among the international institutions are the World Bank, the World Trade Organization and the United States Agency for International Development. At the national level the institutions that have partaken in shaping the trade policies are the military and the owners of capital and labor. The implementation of trade …

Invasive Interactions, Jennifer Galusha

College of Graduate Studies: Theses & Dissertations

This paper discusses the body of work developed for my thesis, Invasive Interactions, which represents abstracted trees as a metaphor for humanistic situations. Through my forms I will discuss equality, abuse, isolation, community, and at the fundamental level, nature itself. Invasive Interactions was created to evoke a subtle awareness in the subconscious of the viewer and to emphasize our world's diverse natural landscape and its fragility.

Annual Rainfall And Seasonality Predict Pan‐Tropical Patterns Of Liana Density And Basal Area, Saara J. Dewalt, Stefan A. Schnitzer, Jérôme Chave, Frans Bongers, Robyn J. Burnham, Zhiquan Cai, George B. Chuyong, David B. Clark, Corneille E.N. Ewango, Jeffrey J. Gerwing, Esteban Gortaire, Terese Hart, Guillermo Ibarra-Manriquez, Kalan Ickes, David Kenfack, Manuel J. Macía, Jean-Remy Makana, Miguel Martinez-Ramos, Joseph Mascaro, Sainge Moses, Helene C. Muller-Laudau, Marc P.E. Parren, Narayanaswamy Parthasarathy, Diego R. Perez-Salicrup, Francis E. Putz, Hugo Romero-Saltos, Duncan W. Thomas

Biological Sciences Faculty Research and Publications

We test the hypotheses proposed by Gentry and Schnitzer that liana density and basal area in tropical forests vary negatively with mean annual precipitation (MAP) and positively with seasonality. Previous studies correlating liana abundance with these climatic variables have produced conflicting results, warranting a new analysis of drivers of liana abundance based on a different dataset. We compiled a pan‐tropical dataset containing 28,953 lianas (≥2.5 cm diam.) from studies conducted at 13 Neotropical and 11 Paleotropical dry to wet lowland tropical forests. The ranges in MAP and dry season length (DSL) (number of months with mean rainfall < 100 mm) represented by these datasets were 860–7250 mm/yr and 0–7 mo, respectively. Pan‐tropically, liana density and basal area decreased significantly with increasing annual rainfall and increased with increasing DSL, supporting the hypotheses of Gentry and Schnitzer. Our results suggest that much of the variation in liana density and basal area in the tropics can be accounted for by the relatively simple metrics of MAP and DSL.

Does The Manipulation Of Tail Position Facilitate Extinction Of Canine Phobic Behavior?, Rebecca A. Zarate

Theses and Dissertations - UTB/UTPA

The phobic behavior of interest is tail tucking which is indicative of submission. In this study the tail was physically manipulated by the use of a custom made harness to hold the tail up in a dominant position to ideally extinguish phobic behavior through reciprocal inhibition. The harness did not hold the tail up the entire duration of the interventions, although it still held the base of the tail up. The intervention did not appear to have an affect on the two of the five subjects. The three more phobic canines did display some behavioral changes, although the changes noticed …

Does Tactile Stimulation Attenuate The Adverse Effects Of Maternal Separations In Rats?, Nancy I. Salinas

Theses and Dissertations - UTB/UTPA

Handling has been used as a stressor and a stress-protector in research on development in rats. Tactile stimulation (TS), on the other hand, has consistently been shown to favorably affect the performance and exploratory behaviors of stressed rats in novel environments and this effect is usually interpreted as evidence of attenuating the developmentally-related emotional consequences of stress. In the present study, the effects of TS during maternal separation (MS) were explored during a critical period of development in rats. An open-field task to measure exploratory behavior was used as a dependent measure of anxiety at a pre-pubertal period. It was …

Ethnobotanical History And Seed Oil Chemistry Of The Physic Nut, Jatropha Curcas, Nathan M. Leclear

Theses and Dissertations - UTB/UTPA

Jatropha curcas L., Euphorbiaceae, is a small tree native to the neotropics. Despite renewed economic interests in Physic Nut, mainly for biodiesel production, a comprehensive analysis of the ethnobotanical history of J. curcas is lacking. An account of the pre-Columbian neotropical distribution of this species and its historical uses are presented. Using capillary gas chromatography, studies were conducted to quantify the natural variation in seed oil content and fatty acid composition of the seed oil from several species of Jatropha, including assessment of how these parameters change during seed maturation. Natural variation in seed oil content was detected (F7,93 = …

A Proposal For The Mechanism Of The Iron-Ascorbate, Fenton, And Hydroxyl Radical-Quenching Series, Jonathan Velasco

Theses and Dissertations - UTB/UTPA

The Fenton reaction between [Fe(II)] and [HOOH] is observed in the presence of ascorbic acid, [AscH-], during [Fe(III)] and HO• reduction; this is done as part of consecutive redox reactions between [Fe(III)] and [Fe(II)]. As a result, the rate orders with respect to [Fe(III)], ascorbic acid, and [HOOH] are of (approximately) 2nd, 1st, and 4 th order, respectively. However, the rate constants for each reaction in this study show patterns when measured against solution pH; empirically, reactions proceed faster at smaller pH and vice versa.

Between Silver And Glass, Catherine V. Lopez

Theses and Dissertations - UTB/UTPA

The critical introduction explores my stories, as well as my influences, and ultimate desires for said stories. The stories themselves explore a variety of topics. They are stories about growing up. They are stories about being a girl. They are stories about the magical world we live in. They are the sort of stories I'd like to read if I ever have free time again.

Reel Talk: Deconstructing Communication Disorders In A Sampling Of Modern Films, Lisa M. Beccera

Theses and Dissertations - UTB/UTPA

This study focused on films that depicted characters that had a communication disorder or characters that have a disability which resulted in a communication disorder. This study examined types of communication disorders depicted in films and the accuracy to which communication disorders are portrayed in films. Thirty films were used in this study and 32 characters were found to have communication disorders. The author used qualitative methods and quantitative methods to examine and deconstruct the depiction of communication disorders in modern films. This paper also illustrates the effective and efficient manner films can be used to educate society and college …

Trace Analysis Of Volatile Organic Compounds In The Water Of The Arroyo Colorado And The Lower Laguna Madre Utilizing E.P.A.Sw846 Method 8260, Humberto Valdez

Theses and Dissertations - UTB/UTPA

Volatile organic compounds (VOC) can cause a major environmental concern since they create a hazard to public health and the environment. This study focused on determining concentration of VOCs in Arroyo Colorado waters and the Lower Laguna Madre (LLM) utilizing GC/MS. Little is known on the concentration and composition of VOCs. Toluene was the most common VOC. Concentrations ranged from 0.0010 mg/L to 0.0039 mg/L. Analysis of a sediment pore water sample collected near the mouth of the Arroyo Colorado also detected toluene (0.0023 mg/L). This study showed that VOCs were concentrated near the county boat launch and somewhat downstream. …