Digital Commons Network^™

Estimating Steelhead Smolt Abundance From A Mixed Resident/Anadromous Oncorhynchus Mykiss Population, Gabriel Temple

All Master's Theses

Effective management of fish populations in inland waters requires, at the most fundamental level, a basic understanding of population abundance. This is especially important for critically depressed species having high conservation value. Unfortunately, due to their critically depressed abundance, the anadromous form of Oncorhynchus mykiss, known as Steelhead Trout, has high conservation value in the upper Yakima Basin located in central Washington State. However, the resident form of O. mykiss, known as Rainbow Trout, are numerous in the watershed. We used a juvenile tagging study coupled with a long-term population monitoring study to disaggregate this mixed O. mykiss …

Lgbtq+ Heritage In Kittitas County, Washington, Tiernan Vansuetendael

All Master's Theses

We know that LGBTQ+ people lived, loved, worked, and made history in Kittitas County—but you would never know that if you visited a local historical site or museum. LGBTQ+ histories exist, yet they are not always visible within the landscape, and this is particularly true for rural communities like Kittitas County. Meanwhile, representation of marginalized communities within local history can contribute to a sense of belonging, of knowing one’s place and the people who came before. This thesis addresses this gap in LGBTQ+ history by conducting archival and ethnohistorical research for the purposes of documenting LGBTQ+ history. Utilizing input from …

Music Density: A Novel Measurement Of Music Perception, Tyler Ussery

All Master's Theses

Empirical research in fields such as music perception, cognition, and therapy has developed considerably in recent decades. While many studies implement musical stimuli, there are few expeditious metrics for identifying the objective characteristics of music itself. The current study proposed and developed a tool for measuring perception of the theoretical concept of music density. Music density can be defined as the compactness of auditory information that comprises a piece of music. For this study, five musical factors were explored (tempo, texture, timbre, dynamics, and predictability) via a 5-point Likert scale. It is well established that personality is an important …

Quantifying The Ecological Effects Of Salix Fragilis On Riparian Habitat In Kittitas County, Washington, Landon Shaffer

All Master's Theses

Invasive species threaten plant community structure and function globally. Riparian areas, the zone near streams where water influences vegetation, are especially sensitive to invasive species colonization, suffering large-scale shifts in community composition. Salix fragilis (crack willow) is a nonnative riparian species abundant in the lower elevation tributaries of central Washington. Some speculate whether this willow should be listed as invasive in Washington, despite a lack of regional supporting evidence. I studied riparian communities dominated by either S. fragilis or native species in the Kittitas Valley and measured biodiversity, quantified differences in solar attenuation, and compared leaf decomposition rates to learn …

An Experiment To Determine Mineral-Associated Organic Matter Turnover In A Sandy Clay Loam, Samantha Abel

All Master's Theses

Soil is an important terrestrial carbon sink. Through regenerative land management, which includes minimizing soil disturbance, the carbon content of soil can be raised towards preindustrial levels. This feat requires effectively storing carbon in a natural system that is inclined to cyclicity. The most stable form of soil organic matter is mineral-associated organic matter (MAOM). This carbon labelling experiment was designed to identify short-term CO₂ fluxes within the soil-plant-atmosphere system, particularly those related to MAOM turnover in the rhizosphere. Basil (Ocimum basilicum) was planted on a plot at the campus farm at Central Washington University. Another plot …

The Impact Of Subjective Risk Analysis On Real Estate Prices In The Nisqually Region Following The 2001 Nisqually Earthquake, Ryan Espedal

All Master's Theses

Earthquakes are an environmental hazard that pose great risks to communities almost every day. With earthquakes, the main cause of concern is physical destruction of property, however, there are also psychological effects that are researched and discussed much less. In 2001, the Nisqually area of western Washington experienced a substantial earthquake that produced minimal physical damage but caused a significant decrease in real estate prices. Studying single-family homes from 1986-2012, this research utilizes hedonic property models to measure the change in consumer’s subjective risk calculations with reference to real estate purchases after the Nisqually earthquake, measure the relationship between earthquake …

The Effect Of Sentence Presentation Order On Animacy Violations And The N400 Effect: A Mixed Methods Approach, Naomi Cady

All Master's Theses

Semantic memory refers to a portion of long-term memory that processes meaning, understanding, and conceptual facts about the world. Research shows that information processing benefits from a priming effect for access to semantic memory. For example, seeing a certain word or gesture, can form a prediction of what will follow. Encountering information that is incongruent with this priming effect elicits the N400 brainwave. The N400 can be used to identify incongruence in sentences, gestures, and even facial expressions. However, there is emerging evidence that context given to even incongruent information has the effect of lessening the strength of the N400. …

Consensus On Potential Changes In Public Health Leadership Competencies As A Result Of The Covid-19 Pandemic Among Washington State Local Health Jurisdictions, Haley M. Schimmel

All Master's Theses

Effective leadership practices among the public health field are critical in the process of influencing positive health outcomes across populations. While many competencies or skill sets that are needed of leaders to promote ideal public health functions have been identified and discussed in previous literature, there has become an arising need for evaluation of potential changes due to the COVID-19 pandemic.

To do this, the Delphi research method was utilized through the implementation of a four-round questionnaire process to gain consensus among participating leaders in ten different Washington State Local Health Jurisdictions. The two main research questions of this study …

Identifying Unexpected Inflammation Resulting From Drug-Drug Interactions, Keegan Jolly

All Master's Theses

Adverse drug events result in nearly 1.3 million emergency room visits per year in the United States of America. As much as 30% of these adverse events are a result of drug-drug interactions (DDI’s). There is a gap in knowledge concerning these DDI outcomes especially when it comes to inflammation. Inflammation is linked to a variety of chronic health conditions and non-infectious diseases such as cancer. Purpose: The goal of this study was to examine how many active drug ingredients from FDA’s Adverse Event Reporting System (FAERS), when combined (in groups of two or more), elicit an inflammatory response …

Zooarchaeology Of The Grissom Site (45kt301), Kittitas Valley, Washington, Steven Spencer

All Master's Theses

The Grissom site of central Washington was excavated 1967-71 by students and faculty from Central Washington State College. The site may represent a portion of a large, springtime intertribal gathering near Kittitas known as Che-lo-han, which involved camas root gathering, tribal councils, and social activities. Extensive radiocarbon dating places occupation ~1810-130 BP, based on 20 of 21 radiocarbon dates, with some stratigraphic mixing. Site materials have been subject to several previous studies, including a 2018 undergraduate pilot study by the author. Other fauna have not been reported outside of a 2012 fish analysis by Lubinski and Partlow. In consultation with …

Comparison Of Midwifery And Obstetric Care Among American Indian And Alaska Native Birthing People, Trista Barnhart

All Master's Theses

Despite making up only 3% of the U.S. population, American Indian/Alaska Native (AI/AN) individuals have the second highest maternal mortality rate in the United States, and the leading cause of maternal mortality and morbidity among AI/AN is postpartum hemorrhage. Many interventions used during childbirth have been identified as common causes of hemorrhage, such as lacerations of the vagina and cervix, operative vaginal deliveries, & augmentation of labor. Research has found that individuals who had midwives as their care providers have been found to be less likely to experience instrumental deliveries, epidural analgesia, labor augmentation, episiotomy or perineal lacerations, cesarean sections, …

Windblown Snow Bedforms And Their Effects On Snow Water Content Wenatchee Range, Washington, Ryan Hampton

All Master's Theses

ABSTRACT

WINDBLOWN SNOW BEDFORMS AND THEIR

EFFECTS ON SNOW WATER CONTENT

WENATCHEE RANGE, WASHINGTON

by

Ryan C. Hampton

June 2023

Windblown snow bedforms (WBSBF) are formations of distinct sizes, shapes, and patterns, resulting from the interaction of wind and snow particles. Due to the extreme nature of the formation of WBSBF, which occur in remote high elevation mountain environments during severe weather events, it makes it difficult to not only study these dramatic formations in real time but also predict their occurrence with any regularity. The purpose of this research was to 1) establish a method to actively monitor WBSBF …

The Impact Of Universal Free Meals During Covid-19 On Family Life And Perspective Of School Meals In Central Washington State, Charlotte Green

All Master's Theses

This study explored the impact of the USDA COVID-19 Universal Free Meal (UFM) waivers on family life, school meal participation, and child eating habits from parents with children in Central Washington state (WA) schools. n = 119 parents/caregivers with students who were in K-12^th grade in Central WA from August 2019-February 2023 completed a 10 question electronic, and descriptive survey. The survey measured changes in participation in school lunch/breakfast pre to post COVID-19 waiver, which provided free meals for all children, and whether UFM were beneficial to families, impacted perception of school food, child’s sense of community at school …

The Expected Risks And Exacerbations Of Poverty, Mental Health Disorders, And Maternal Mortality From Abortion Bans: A Comparative Literature Analysis, Daniel J. Francisco

All Master's Theses

Background. Early termination of a pregnancy (hereinafter referred to as an “abortion”) has been debated in the United States (U.S.) for decades, without much regard to the negative outcomes that forced pregnancies have for those assigned female at birth regarding poverty, mental health and maternal mortality. In 1973, access to safe abortions was protected so long that the procedure was done within the legal gestational period and/or was necessary for the health and safety of the patient (Blackmun, 1972). Unfortunately, in 2022, the Supreme Court took that protection away and made it legal for states to determine the reproductive rights …

Ballistic Experiments With A Sample Of 3-D Printed Columbia Plateau Projectile Point Types, Aren Orsen

All Master's Theses

Recent advances in 3-D scanning and printing offer the means for experimental archaeologists to utilize reproductions of artifacts for analysis and interpretation. In this case study I accurately reproduce a sample of Columbia Plateau projectile points, measure their ballistic properties with an experimental approach, and test the effectiveness and function of point types representing different time periods. Eight morphologically distinct projectile points were 3-D scanned, printed, and test fired into a clay target. Velocity, kinetic energy, momentum, penetration, and wound channel size were measured. Results indicate all eight arrow mounted point types were suitable for small to medium game. Variations …

Cannabis Cues And Effects On Social Anxiety, Erica Steinberg

All Master's Theses

Prior research has shown that individuals experiencing social anxiety may use cannabis for self-medication; therefore, the current study evaluated if viewing cannabis cues would reduce feelings of social anxiety. Central Washington University undergraduates enrolled in psychology courses (n = 124; 66.7% female; M_age = 19.8, SD_age = 4.7) were shown cannabis cues after viewing expressive facial images that prior research has shown induces feelings of social anxiety. Contrary to prior research, the current study found that emotional faces did not significantly affect state-trait anxiety as measured by the 6-item State-Trait Anxiety Inventory (STAI-6) but that trait social …

Parents' Grief Literacy: How Loss Is Talked About With Children, Abigail Mccarthy

All Master's Theses

Grief can encompass many types of loss, such as losing a job, moving to a new state, or changing careers, and it can affect socioemotional, behavioral, and physical aspects of daily living (Brenn et al., 2020; Favazza & Munson, 2010). Previous research has shown that the process of grief is largely misunderstood in the United States, and misconceptions of the grief and loss process can lead to perpetuated incorrect beliefs, maladaptive coping, and incorrect medical treatment (McLean et al., 2022; Sawyer et al., 2021). The term grief literacy encompasses the knowledge and engagement with topics surrounding grief and loss (Breen …

Estimating Evapotranspiration And Analyzing Soil Moisture And Heat Flux Parameters At Taneum Creek, Central Washington, Edward Vlasenko

All Master's Theses

In the past two decades, stream restoration work, primarily in the form of wood emplacement, has been undertaken in the Taneum Creek watershed, resulting in increased channel-floodplain connectivity. One of the goals of stream restoration was to boost dry season groundwater storage in the shallow floodplain aquifer. However, any gains in groundwater due to increased connectivity may be nullified by increased evapotranspiration (ET) losses because of denser floodplain vegetation. Within the floodplain aquifer budget, ET is a major flow of water out of the system and is not well quantified.

In order to quantify ET, a monitoring site was established …

An Evolution Of Gold Of The Swauk Mining District, Liberty Washington, Timothy Miller

All Master's Theses

The Swauk Mining District in Central Washington state is a historic mining community with active small scale mining dating back to the 1870’s. Gold has been mined from both lode and placer deposits. The placer deposits of Liberty area are unique due to the variety of gold textures, most notably are the nuggets of tangled masses of dendritic crystals and wire gold.

This research aims to determine the paragenic sequence that led to the formation of the lode and placer gold deposits using a combination of field work and laboratory analyses. Field work consisted of small-scale detailed mapping, recording of …

Risk Of Low Energy Availability, Disordered Eating, And Menstrual Dysfunction In Female Collegiate Runners, Leah Louise Dambacher

All Master's Theses

Collegiate female distance runners may be at risk for low energy availability (LEA) due to increased exercise energy expenditure with or without decreased energy intake. Furthermore, this population has increased risk of disordered eating (DE), which can lead to LEA and negative health consequences, such as menstrual dysfunction (MD). Purpose: The purpose of this study was to: 1) investigate risk of LEA and DE and 2) compare DE, training volume, and weight dissatisfaction among female collegiate runners athletes at risk vs not at risk for LEA. Methods: Female runners (n = 287) who competed on an NCAA Division …

Effects Of Solar Arrays On Southwestern Desert Thermal Landscapes: Consequences For Terrestrial Ectotherms, Adrian Slade

All Master's Theses

Solar energy development in the Southwestern United States coincides with habitat for many sensitive and endemic species, including reptiles such as Mojave Fringe-toed Lizards and Mojave Desert Tortoises who are threatened by a warming and drying climate. While utility-scale solar energy reduces carbon emissions and should ultimately benefit climate-sensitive species, it locally destroys fragile desert habitat, displaces wildlife, and has been shown to incur local air and surface temperature changes. Mitigation-based translocation of wildlife species in the face of solar development yields mixed results, and the unprecedented pace of solar expansion in the desert highlights the need for alternative practices …

Evaluation Of Leishmanicidal Activities Of 4-Thiazolidinones Against Leishmania Major, The Causative Agent Of Human Cutaneous Leishmaniasis, Kiera Bush

All Master's Theses

The leishmaniases are a group of vector-borne parasitic diseases that affect many developing countries including parts of Africa, India, and the Middle East in addition to Southern Europe and the Americas. It is estimated that worldwide, there are about 3 million new cases of leishmaniases each year leading to as many as 50,000 fatalities annually. The parasites that cause leishmaniasis belong to the genus Leishmania spp and are transmitted by the female phlebotomine sand fly. There are three clinical forms of the infection: visceral, mucocutaneous, and cutaneous. However, the focus of this paper is on cutaneous leishmaniasis that causes skin …

Hydrologic And Geomorphic Investigations Of Two Engineered Stream Crossings Under Interstate 90 In Washington State, Catherine Mast

All Master's Theses

The importance of stream restoration in providing a healthy ecosystem is widely recognized. The Washington State Department of Transportation (WSDOT) has implemented environmental changes to facilitate habitat restoration and wildlife passage along the Interstate 90 Highway (I-90) corridor where it passes over the Cascade Mountains. Prior to the I-90 corridor expansion, Price and Noble Creeks passed under the highway though culverts, limiting passage of aquatic species or wildlife below the highway. In 2019 the stream channel crossings were expanded, and the size/shape of these creeks were engineered to mirror what would be seen in a natural environment. Since construction, erosion …

Paleoseismic Investigation Of Rupture On The Dead Coyote Fault In The Kittitas Valley, Washington, Garet Huddleston

All Master's Theses

Recently discovered fault scarps along the Dead Coyote Fault (DCF) in the northern Kittitas Valley (KV) of central Washington suggests active faulting in the late Quaternary, but constraints on the timing and potential magnitude of earthquakes along the fault zone are limited. The KV lies at the northwestern edge of the Yakima Fold and Thrust Belt (YFTB), a low-strain region where individual structures are capable of producing M~7 earthquakes.

This investigation uses surficial geologic mapping and topographic analysis of the DCF scarps, ground penetrating radar transects, and paleoseismic trenching to determine the rupture history of the DCF. The trench was …

Crosshair Optimizer, Jason Torrence

All Master's Theses

Metaheuristic optimization algorithms are heuristics that are capable of creating a "good enough'' solution to a computationally complex problem. Algorithms in this area of study are focused on the process of exploration and exploitation: exploration of the solution space and exploitation of the results that have been found during that exploration, with most resources going toward the former half of the process. The novel Crosshair optimizer developed in this thesis seeks to take advantage of the latter, exploiting the best possible result as much as possible by directly searching the area around that best result with a stochastic approach. This …

Using Primates As A Flagship Species In Marketing Campaigns: Effects On Proenvironmental Attitudes And Behavioral Intentions, Taylor Barber

All Master's Theses

Shade coffee plantations grow coffee under a canopy of trees and provide alternative habitats for many bird and primate species, known as agroecosystems, particularly in Latin America. The aim of the current project was to better educate the public about shade plantations and the positive effects they can have on conservation for primates. In addition, marketing tactics such as the presence of a shade plantation certification label and howler monkey images were assessed for their effects on consumer purchasing intentions as well as participant support for biodiversity and sustainability. Participants were recruited through the Department of Psychology’s research system at …

Staff Perceptions Of Responsibility And Implementation Of Cognitive Enrichment For Non-Human Primates In Zoo Settings, Ember Nevada Toth

All Master's Theses

In zoos, caregivers have considered enrichment as vital for their animal collections’ physical health and development. Since primate species are endangered and continue to decline in numbers in their natural habitat, zoos are steadily becoming the only places we can view and learn about them. In today’s zoos, cognitive enrichment—which falls into overlapping categories of enrichment and does not yet have a universally accepted definition—is either absent or inconsistently offered. Providing challenges to stimulate cognitive well-being has been found to influence the overall welfare of captive primates. Cognitive enrichment is considered very important according to zookeeper surveys but is not …

Risk Of Low Energy Availability, Disordered Eating, And Menstrual Dysfunction In Female Recreational Runners, Marissa Miles

All Master's Theses

Running is characterized by high physiological demands with an emphasis on weight, which may lead to a greater risk of developing low energy availability (LEA) and/or disordered eating (DE). Recreational runners are a population that is often overlooked due to a lack of resources readily available to them. Purpose: This study investigated (1) the prevalence of menstrual dysfunction, risk of DE and LEA and (2) compare the risk of DE, training volume, and weight dissatisfaction between female recreational runners at risk for LEA versus not at risk for LEA. Methods: Female recreational runners (n= 1,923) completed an online questionnaire that …

Constraining Rock Type Controls On Geophysical Properties: Implications For Earthquake Hazard Assessment Near Ellensburg, Washington, Zachary Stevens

All Master's Theses

High precision geophysical modeling can constrain the geometry of structures in the upper to middle crust beyond what is possible with surface data alone, which allows for a better understanding of seismic hazards. This modeling requires values of both the magnetic susceptibility and density relevant to rocks at depth; this study presents a combination of field and laboratory measurements of basement units to determine these properties. The basement rock of the Kittitas Valley is made up of a complex series of metamorphic and igneous bodies, so it was important to gather a representative suite of samples of the most volumetrically …

Floodplain Aquifer Storage Capacity In Upper Yakima River Tributaries, Kittitas County, Wa, Emily Polizzi

All Master's Theses

Large wood (LW) restoration projects were recently implemented in the Upper Yakima Basin following the destructive logging practices of the early 20^th Century, which stripped Upper Yakima River tributaries of LW. The removal of natural LW increased incision, isolating channels from floodplain aquifers, and degrading resident and anadromous fish habitat. Returning streams to their natural state through instream LW installations is believed to increase floodplain groundwater storage by decreasing channel incision, increasing floodplain-channel connectivity, and raising the water table elevation. Additional storage in floodplain aquifers can help combat the adverse effects of climate change, namely decreasing snowpack and earlier …