Digital Commons Network^™

Drought Responses Across Diverse Conifer Species, Habitats, And Competitive Gradients In Northern California, Gabriel J. Roletti

Cal Poly Humboldt theses and projects

Frequent and intense drought events are rapidly altering stand dynamics in western North American forests. Climate, competition, and site characteristics can affect the growth responses of individual trees to drought stress. The ecological and geographical diversity of northern California provides a unique opportunity to measure these responses across species, habitat types, and levels of competitive pressure. This study used dendrochronological techniques and linear mixed-effects models to assess growth responses to drought in four montane and two coastal conifer species across 54 study sites (nine sites per species and 540 trees total) in northern California. Growth was evaluated from 2002-2018 and …

Comparing Molecular Methods To Estimate Fish Stomach Contents And Gastric Evacuation Rates: Implications For Measuring The Impacts Of Predation On Central Valley Chinook Salmon, Cory M. Dick

Cal Poly Humboldt theses and projects

Juvenile Chinook Salmon (Oncorhynchus tshawytscha) migrating through the Sacramento – San Joaquin Delta (the Delta) in central California have higher mortality rates than salmonids migrating through other west coast estuaries. Some hypotheses for high mortality rates include entrainment into water export facilities, physical alterations of the river system, and predation. Of these factors, predation is considered the least understood but may have the largest impact. Predation from large populations of non-native piscivorous fishes in the Delta is believed to effect abundances of Central Valley Chinook salmon, however sufficient data supporting this hypothesis is scarce. In this study, I …

Carnivore And Ungulate Responses To Cattle In A Grazed Forest Ecosystem, Rebecca Carniello

Cal Poly Humboldt theses and projects

Habitat disturbance, a leading threat to biological diversity, comes in many forms and can alter the behavior of wildlife and reduce the amount of suitable habitat. Livestock grazing, a form of habitat disturbance, is the most widespread influence on native ecosystems of western North America. Research on the impacts of introduced domestic herbivores on wild carnivores and ungulates varies, and the degree to which wildlife species are affected is often species-specific. I used remote trail cameras to compare the activity patterns of black bears (Ursus americanus), coyotes (Canis latrans), bobcats (Lynx rufus), mountain lions …

Factors Affecting The Production Of Berries Of The Red Huckleberry Plant In The Redwood Experimental Forest, Kagat G. Mcquillen

Cal Poly Humboldt theses and projects

Vaccinium parvifolium (red huckleberry) is a culturally and commercially valued food for different coastal tribes of northwestern California.

Today some tribes are regaining access to ancestral lands, and Indigenous researchers are working to document information about culturally significant plant species and their management to reclaim traditional ecological knowledge and restore food sovereignty.

The present study, focused on red huckleberry, Vaccinium parvifolium, took place in the ancestral territory of the Yurok Tribe, currently managed by the US Forest Service as the Redwood Experimental Forest (REF) in Klamath, CA. Geographic Information Systems-based mapping, forest ecological field data collection, and a literature …

Nā Pua Makani Wind Farm: The Shifting Winds Of Renewable Development In HawaiʻI, George Webster Ross Iv

Cal Poly Humboldt theses and projects

In 2015, Hawaiʻi set the most ambitious renewable energy portfolio goal in the nation by vowing to reach 100% renewable energy by 2045. Since then, many renewable energy development projects in Hawaiʻi have been met with strong community opposition, including the Nā Pua Makani wind farm (NPM) in Kahuku. The aim of this project is to analyze the process timeline of NPM to identify factors in the development process that contributed to organized protest, and to offer recommendations for improving the process. In order to get a full picture of the events throughout the Nā Pua Makani project’s timeline, my …

Restorative Practices In Education: A Case Study, Emily Morris

Cal Poly Humboldt theses and projects

Literature shows that restorative justice practices, over time, are an effective practice for reducing negative student behaviors. This study will examine teacher and staff viewpoints on restorative practices and how they are being implemented on our campus. Additionally, this study will explore what impact restorative practices have on our campus, according to teachers and staff. My goal is to answer some of the questions that were unanswered through the literature. For instance, do the restorative justice consequences have a positive impact on student behavior? Do the staff feel that the current system, which uses restorative practices, is effective in dealing …

Process Optimization For An Integrated Reverse Osmosis—Pressure Retarded Osmosis Pilot-Scale System Operated On Humboldt Bay, Ca, Galen O'Toole

Cal Poly Humboldt theses and projects

Pressure retarded osmosis (PRO) is an emerging osmotic power technology that could mitigate the major challenges faced by seawater reverse osmosis desalination (RO): brine disposal and high energy consumption. The primary focus of this paper is process optimization for a linked seawater reverse osmosis (RO) and pressure retarded osmosis (PRO) water purification system. PRO generates power by using osmosis to “pump” water through a membrane from low pressure and low concentration to high pressure and high concentration (RO brine). This commercial-scale pilot effort explores process optimization for pressure retarded osmosis as an industrial process rather than theoretical or experimental process. …

Sediment Production From Forest Roads In Areas Affected By The August Complex Fire In Northern California, Zachary J. Gigone

Cal Poly Humboldt theses and projects

Wildfire activity is increasing in California and is an important factor affecting erosion rates. Landscapes recently affected by wildfire, areas that have been salvage logged after a fire, and unpaved forest roads are all major sources of sediment which can impair water quality and negatively impact many aquatic species. Therefore, this study was conducted to quantify erosion rates from native and gravel surfaced forest road segments after the August Complex fire, evaluate the impact of salvage logging activities on sediment production from roads, and understand the effect of soil burn severity on sediment production from these road segments. Finally, this …

Late Quaternary Glacier Fluctuations At Picayune Lake, Northern California, Aidan Patrick Cowan

Cal Poly Humboldt theses and projects

The Klamath Mountains are a 233-km-long (north to south) mountain range located in northern California that shows extensive geomorphic evidence of Pleistocene glaciation. Within the Klamath’s there are many highland lakes, which record evidence of glacial deposition, one of which is Picayune Lake. Lake sediment data collected from Picayune Lake offers insights into the glaciation, and broader depositional history of the Picayune Lake Valley, as well as the climate history of the Klamath Mountains region. I measured magnetic susceptibility, loss on ignition, and grain size in sediment cores and used radiocarbon dating to determine a chronology of glacier fluctuations in …

Determining Haplotype Specific X Chromosome Inactivation State And Related Epigenetic Features In Female X-Linked Genes, Ariah Dawn Mackie

Cal Poly Humboldt theses and projects

Females with heterozygous X-linked mutations are prone to pseudo-haploinsufficiency because random X chromosome inactivation (XCI) silences one of their two X chromosomes. A prior study explored the theory that reactivating the silenced healthy allele could be a treatment for pseudo-haploinsufficient females. The next step was to evaluate this approach in a clinically relevant stem cell model of the rare neurological disease CDKL5 Deficiency Disorder (CDD). It was necessary to validate X-inactivation state with respect to CDKL5 allele expression in one of these models. We explored CDKL5 allele expression in two populations of CDD female patient-derived induced pluripotent stem cells (iPSCs) …

Comparison Of Environmental Dna And Underwater Visual Count Surveys For Detecting Juvenile Coho Salmon (Oncorhynchus Kisutch) In Rivers, Jason T. Shaffer

Cal Poly Humboldt theses and projects

Environmental DNA (eDNA) has developed into a useful tool for determining the distribution of rare aquatic species, but relatively few studies have directly compared the detection probabilities of this method with other conventional survey techniques. These comparisons can inform which method may be better suited to address study objectives. In this study, the overall goal was to compare the ability of eDNA and underwater visual count (UVC) surveys to detect juvenile coho salmon (Oncorhynchus kisutch), a species of conservation concern at the southern extent of its geographic range. Specifically, I address two objectives: (1) compare the ability of …

Return To Wolf Country: Exploring Rancher Knowledge Of Gray Wolves In Wallowa County, Oregon, Theodore Masters

Cal Poly Humboldt theses and projects

With the extirpation of gray wolves (Canis lupus) from the American West in the early 20^th Century, generations of ranchers have grazed livestock free from any threats by wolves. The absence of wolves from the western landscape has created an inter-generational gap in the experiential knowledge held by ranchers regarding how to manage livestock in wolf country. Using Wallowa County, Oregon, as a case study site, 18 cow-calf ranchers were interviewed to gain insights into the ways they generate and share knowledge of running livestock in landscapes shared with wolves. This study revealed the arrival of wolves …

Escherichia Coli And Salmonella Sp. In Domestic Cattle And Wild Roosevelt Elk: Fecal Pathogens At The Wildlife-Domestic Interface, Emily A. Buck

Cal Poly Humboldt theses and projects

Direct or indirect contact between domestic populations of animals and wildlife carries an inherent risk for transmission of pathogens that cause infectious disease. In Humboldt and Del Norte counties of northern California, ongoing conflict between ranchers and Roosevelt elk groups results from elk use of ranching pastures and pastures on private land. Fecal samples from elk in association with cattle, cattle, and from elk not in known association with cattle were assessed for the presence of bacteria Salmonella enterica and pathogenic Escherichia coli to assess whether association with cattle increases risk of infection for elk. Group identity (one of the …

Hormonal Medications And Partner Odor Preferences, Jeffrey Lee Frederick

Cal Poly Humboldt theses and projects

The ability to recognize kin through the olfactory sense has important survival and evolutionary implications when choosing mates. Failing to recognize kin when making a choice of whom to mate with can lead to an increase in detrimental genetic outcomes in offspring. Previous studies have indicated that normally ovulating heterosexual women and men prefer the body odor of those with dissimilar immune systems than those with similar immune systems. The use of hormonal contraceptives has shown a preference for similar immune system odors. The current study examines whether the use of hormonal medications predicts preference for body odor. Importantly, this …

Differentiating The Effects Of Two Non-Native Fish In The Turnbull National Wildlife Refuge, Sarah Richardson

EWU Masters Thesis Collection

This study seeks to determine the individual effects of two non-native fish, the brook stickleback, Culaea inconstans, and pumpkinseed, Lepomis gibbosus, on the aquatic invertebrates and food webs of Turnbull National Wildlife Refuge (TNWR). Ten ponds were analyzed and compared with stable isotope analysis and invertebrate abundance data. Three ponds were chosen to represent each of the following categories: fishless, brook stickleback invaded (BS), and coinvaded, along with a single pumpkinseed (PS) pond. Overall, δ[superscript]13C and δ[superscript]15N values increased in invaded ponds, indicating shifts in the zooplankton community structure and the carbon source of predatory invertebrates. Mean δ[superscript]13C was the …

Exploring The Knowledge Of Wildfire Smoke Mitigation And Tolerance Measures Within A High-Risk Community In San Diego County, California, Nicole C. Salas

Cal Poly Humboldt theses and projects

This study focuses on a community’s interest and knowledge on air quality mitigation measures in regard to smoke exposure from wildfires. A combination of semi-structured in person interviews and online surveys were available for those individuals that lived or worked in Ramona, California. The residents in Ramona had varying knowledge, concern levels and responses when discussing air quality mitigation measures with regards to wildfire smoke effects and impacts. Wildfire smoke itself was not a major concern of most residents within the area and many had described wildfire smoke mitigation measures as being conditional measures not applicable to the entire community …

The Effect Of Brain Breaks On Student Outcomes Of School-Aged Children In K-12 Classrooms: A Meta-Analysis, Teron H. Schaeffer

Cal Poly Humboldt theses and projects

BACKGROUND: Integrated physical activity in the classroom has been shown to affect K-12 students’ development positively. Students of all abilities benefit from multimodality learning. PURPOSE: This study investigates the relationship between classroom brain breaks and school-aged students' classroom behaviors. METHODS: The Meta-analysis search process consisted of 3 Phases: (1) Screen the titles, (2) Screen the abstracts, and (3) Retrieve the Full Text. Literature searches were conducted in eight electronic academic journal databases: SPORTDiscus, PsycINFO, PsycARTICLES, Cochrane Database, Web of Science/Web of Knowledge, ProQuest, Child Development and Adolescent Studies, and ERIC. Students (N) are enrolled in schools serving students from kindergarten …

The Role Of A Certified Child Life Specialist Within A Child Advocacy Center, Breanna E. Hintz

EWU Masters Thesis Collection

Childhood abuse and neglect is currently a prevalent issue in our society. Children who do not receive adequate support and ongoing services experience lasting impacts on their mental health and ability to cope with future events. Child Advocacy Centers (CAC) are community-based agencies that promote the intervention of childhood abuse and neglect. This setting, paired with the tailored support of Certified Child Life Specialists (CCLS), is an under-researched yet promising combination of services that can encourage the healing process for these children and their families. This study aims to understand the role of CCLSs in a CAC and how their …

Demographic Modeling Of Conservation Strategies For The Yosemite Toad (Anaxyrus Canorus), Corrina Rebecca Kamoroff

Cal Poly Humboldt theses and projects

The Yosemite toad (Anaxyrus canorus) is an anuran species endemic to the Sierra Nevada in California that, like many amphibians globally, has suffered population declines. The documented decline in A. canorus populations across their historic range highlights the need for an effective management strategy to protect the species from future extirpation. For this study, I estimated survival rates of A. canorus using a Cormack-Jolly-Seber model populated with data from a demographic study. I then used a female-only post-birth pulse stochastic Lefkovitch matrix model using vital rates I estimated and from the literature to simulate the effect of different …

Counter Archives: Unfolding Hidden Stories, Berlin Loa

Cal Poly Humboldt theses and projects

We select what we value as history creating collective memory that can obfuscate or devalue other threads in the story intentionally or unintentionally. Through collections of material culture, curated and described by archivists, we receive information that constructs our collective memory of self. These cultural artifacts reflect and reconstruct the past. Material artifacts in the archives depend largely on the story that is told about their provenance to provide meaning. This paper takes photographic collections in archives as examples of material culture to demonstrate how archival presentation affects the stories of collections items, and examines modalities and subverted stories in …

Positive Motivational Self-Talk: The Influence Of Gender On Performance, Perception Of Self-Talk, And Performance Anxiety During A Disc Golf Putting Exercise Before And After A Self-Talk Intervention, Samantha L. Hennessy

EWU Masters Thesis Collection

No abstract provided.

Realism As Weaponry: Challenging Victorian Ideals Of Femininity In Mary Elizabeth Braddon's Lady Audley's Secret And Wilkie Collins' Armadale, Taylor Aalgaard

EWU Masters Thesis Collection

No abstract provided.

Methods Of Anomaly Detection: An Applied Framework And Application To Health Economics, Nathaniel Eric Islip

EWU Masters Thesis Collection

No abstract provided.

Navigating The Labyrinth Of House Of Leaves Through A Postmodern Archetypal Literary Theory, Samuel K. Hval

EWU Masters Thesis Collection

No abstract provided.

Investigating How Bat Ectoparasites Influence The Skin Microbiome Diversity And Composition In Washington State Bats, Dana E. Colley

EWU Masters Thesis Collection

White-Nose Syndrome (WNS), caused by the psychrophilic pathogenic fungus Pseudogymnoascus destructans (Pd), has killed millions of bats in the eastern United States since its initial introduction in 2006 and recent expansion into the western U.S. Understanding factors that contribute to the spread of Pd and risk of infection is crucial for management of WNS. Bat ectoparasites, including bat mites and bat flies, are omnipresent in bat populations, yet the relationship between these ectoparasites and bat health is still unknown. We examined the relationship between bat ectoparasites and the skin microbiome in relation to WNS infection risk in Washington State bats. …

Knowledge, Attitudes, And Expectations Among Certified Nursing Assistants Providing Oral Care To Individuals With Alzheimer's Disease Or Another Form Of Dementia Utilizing Music Therapy, Gina Dunn

EWU Masters Thesis Collection

Purpose: Current literature was aimed to explore CNAs attitudes, knowledge, and expectations on the use of music for individuals with Alzheimer’s Disease (AD)/dementia while providing oral care.

Methods: A single survey, 5-point Likert scale survey that included demographic and qualitative questions, was posted on a private CNA Facebook group page. The survey was posted to explore attitudes, knowledge, and expectations of CNAs towards the use of music therapy. Data was analyzed using descriptive statistics, Chi-square, and thematic coding.

Results: A convenience sample of (N = 55) CNAs participated in the study. IBM SPSS® version 28.0.1 was used to analyze the …

Ethnic Discrimination, Social Cohesion, And Mental Health Among Latinx Adults, Lucas Torres, Jaclyn Pachicano, Claire Maria Bird, Lisa M. Edwards

College of Education Faculty Research and Publications

The negative effects of ethnic discrimination on depression symptoms have led researchers to identify potential risk and protective variables of this relationship. While some studies have focused on individual level factors, little research has explored the role of community-level variables, or the combination of both. The present study of Latinx adults (N = 304) tested a moderated mediation model to examine if alcohol use was a mediator of ethnic discrimination and depression under certain levels of social cohesion. Results found that alcohol use was a mediator between ethnic discrimination and depression symptoms and social cohesion moderated this relationship, such …

Why Insurance Needs A Restatement: The Case Of Settlement Decision Law, Chaim Saiman

Faculty Publications

Even before its publication, the Restatement of the Law, Liability Insurance had been subjected to withering wholesale criticism that it creates aspirational and pro-policyholder insurance law. This view continues to be forcefully promoted by insurers and their advocates in the legal literature and by governors and state legislatures in the political areas.

This Article finds these wholesale criticisms unwarranted. Liability insurance law is not a field where law is simply found and restated. In fact, settlement law offers the most vivid examples of why the Restatement of the Law, Liability Insurance is possible, useful, and justified. It is possible because …

Viral Sovereignty,Vaccine Diplomacy,And Vaccine Nationalism: The Institutions Of Global Vaccine Access, Sam F. Halabi, Ana Santos Rutschman

Faculty Publications

The COVID-19 pandemic has triggered a global vaccine race. Distributive questions about which countries will receive scarce doses and under which conditions pervade international law and diplomacy. This Article is the first to describe the phenomena that have driven the development of international vaccine-sharing mechanisms, identify the international organizational forces that explain the phenomena, and explain how international organizations may facilitate international cooperation before, during, and after global crises.

This Article explores the longstanding dissociation between global public health imperatives and nationalist responses to pandemics within the frameworks of “vaccine nationalism,” “viral sovereignty,” and “vaccine diplomacy.” The Article then considers …

Promoting Vaccine Innovation, Mirit Eyal-Cohen, Ana Santos Rutschman

Faculty Publications

As society grows to understand the need to promote innovation, policymakers try to employ an arsenal of policy tools, from traditional intellectual property (“IP”) to newer tools such as grants, regulatory vouchers, and prizes. This Article argues that these frameworks crowd out certain types of investments in innovation projects that have a high social value. Vaccine innovation is a case in point. Despite the immense socioeconomic benefit of vaccines, existing policies have been limited in fostering investments in this space. This is because they fail to directly address the relevant bottleneck issues distinct to vaccine development.

This Article offers a …