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2026

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Subjective Glib Dynamics: Using An Alien Society To Investigate Reactions To Leader And Member Norm Deviance, Catie Burtch Jan 2026

Subjective Glib Dynamics: Using An Alien Society To Investigate Reactions To Leader And Member Norm Deviance, Catie Burtch

Cal Poly Humboldt theses and projects

Social groups are built by members and leaders who form consensus on the defining attributes of their groups. Individual group members look to senior members and leaders to learn what it means to be a member of that group. Thus, norm maintenance is an important aspect of group health. The subjective group dynamics model details the specific group contexts under which people derogate ingroup members for transgressing norms. However, ingroup leaders are treated differently from regular group members and are given leniency for their transgressions. The current research extends these two bodies of work by directly comparing the consequences of …

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Geographic Variation In Proteomic Responses To Ocean Acidification In A Cold-Water Coral (Balanophyllia Elegans), Keana A. Richmond Jan 2026

Geographic Variation In Proteomic Responses To Ocean Acidification In A Cold-Water Coral (Balanophyllia Elegans), Keana A. Richmond

Cal Poly Humboldt theses and projects

In the face of a rapidly changing climate, assessing organismal responses to future stressors in the context of current, natural exposure to stress could provide key insights to understanding marine ecosystem resilience. I used Balanophyllia elegans, a cold-water, solitary, azooxanthellate coral as a model to better understand how varying oceanographic conditions across its geographic range have shaped its ability to tolerate and potentially adapt to current and future ocean acidification conditions. I collected B. elegans individuals from four sites across 2,500km of their range and subjected them to two pH treatments to investigate site-specific protein expression in response to …

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Early Successional Response To Stream Daylighting In Redwood National And State Parks, Orick, California, Rylee Rawson Jan 2026

Early Successional Response To Stream Daylighting In Redwood National And State Parks, Orick, California, Rylee Rawson

Cal Poly Humboldt theses and projects

In-channel stream restoration projects can act as both disturbance and recovery mechanisms, disrupting existing conditions to reestablish the hydrologic and ecological processes that sustain stream ecosystems. These interventions initiate successional trajectories in which channel form and biological communities reorganize over time. In Redwood National and State Parks (California, USA), the Redwoods Rising initiative restores buried headwater channels by recontouring legacy logging roads and daylighting streams buried by Humboldt crossings. Using the National Park Service Klamath Network wadable stream monitoring protocol, I evaluated nine restored reaches spanning one to five years post-restoration, alongside old-growth reference reaches and available pre-treatment data. I …

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Coho Salmon (Oncorhynchus Kisutch) Response To Habitat Restoration Through Space And Time: Monitoring Growth, Survival, And Movement In A Restored Habitat Network, Carter Perez Adamson Jan 2026

Coho Salmon (Oncorhynchus Kisutch) Response To Habitat Restoration Through Space And Time: Monitoring Growth, Survival, And Movement In A Restored Habitat Network, Carter Perez Adamson

Cal Poly Humboldt theses and projects

Despite the decline of coho salmon (Oncorhynchus kisutch), Prairie Creek, a tributary of Redwood Creek in northern California, remains a coho salmon stronghold. The restoration of juvenile coho rearing habitat was identified as a recovery objective in this watershed by the National Marine Fisheries Service. Among the restoration projects addressing this objective are an ongoing project on Prairie Creek and its tributary Skunk Cabbage Creek, and a prior effort on Strawberry Creek (a tributary of Redwood Creek’s estuary). Standard monitoring methods for assessing project success have limitations and may be improved by measuring salmon use of restored habitats …

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Navigating Liminality: Building Resources For And With Undocumented Students, Yaneyry Delfin Martinez Jan 2026

Navigating Liminality: Building Resources For And With Undocumented Students, Yaneyry Delfin Martinez

Cal Poly Humboldt theses and projects

Rooted in Community-Based Participatory Research (CBPR) and Liberation Sociology, this project outlines an institutional blueprint for the resources and support systems needed to address the lived realities of undocumented students at Cal Poly Humboldt (CPH). Conducted during the second Trump Administration amidst escalating hostility towards immigrants and attacks on DEI initiatives, this work documents both the structural conditions shaping undocumented students’ lives and the collective resistance that emerged in response. Furthermore, it examines how immigration policy, access to and restrictions on federal and state aid, geographic conditions, and on-campus barriers reproduce and maintain legal liminality within higher education. Grounded in …

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Repairing Estranged Death: Care, Politics And Ecology In The Us Funeral Industry, Cecilia Catherine Rodriguez Jan 2026

Repairing Estranged Death: Care, Politics And Ecology In The Us Funeral Industry, Cecilia Catherine Rodriguez

Cal Poly Humboldt theses and projects

The industrialization of death practices in the US has separated humanity from natural cycles while centering white settler colonial norms that marginalize other cultural ways of caring for the dead. Through necropolitics, the contemporary death industry embodies capitalist values of commodification and a monopolization of care, separating death from community and its ecological cycles. Black and Indigenous feminist knowledges understand death as not a discrete event but instead as an ongoing process that shapes our relationships with both the human and more-than-human worlds. Engaging with feminist political ecologies, I extend a conversation about care and repair to contemporary death practices …

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Postfire Habitat Use And Density Of Pacific Martens (Martes Caurina) In Lassen National Forest, California, Deirdre L. Replinger Jan 2026

Postfire Habitat Use And Density Of Pacific Martens (Martes Caurina) In Lassen National Forest, California, Deirdre L. Replinger

Cal Poly Humboldt theses and projects

Increasing frequency, size, and severity of wildfires in western North America threatens forest-dependent wildlife species. The Pacific marten (Martes caurina) has historically been associated with mature, structurally complex forest throughout most of its range. Recently, martens have been detected in forests burned at high severity by the 2021 Dixie Fire—the largest recorded single fire in California state history. I used non-invasive remote camera traps and hair snares (n = 166 sites) to assess marten habitat use and density using spatial occupancy and spatial capture-recapture models. I detected martens across the burn severity gradient (unburned to high-severity) at …

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Decolonizing Restorative Justice: A Teaching Development Project, Lacy Felice Mitchell Jan 2026

Decolonizing Restorative Justice: A Teaching Development Project, Lacy Felice Mitchell

Cal Poly Humboldt theses and projects

The coloniality of power serves as a central axis within the matrix of domination that characterizes global capitalist modernity, as Anibal Quijano famously argued. This power is rooted in particular ways of looking, seeing, and understanding social reality, anchored in Eurocentrism as an epistemological paradigm for the hegemonic discourse produced by the West against both internal and external categories of “other.” Such categories still inform the production of knowledge in educational settings. In this project, I engage in a critique of the coloniality of power to explore its implications and potential for critical pedagogical practice within the context of sociology …

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Examining The Physiological Stress-Reducing Effects Of Virtual Nature Exposure And Slow Breathing, Jesse Benefiel Jan 2026

Examining The Physiological Stress-Reducing Effects Of Virtual Nature Exposure And Slow Breathing, Jesse Benefiel

Cal Poly Humboldt theses and projects

In a time of excess stress, it is essential to examine accessible stress-reduction methods. Research has demonstrated that virtual nature exposure and slow breathing can independently reduce stress, but the literature is lacking with regard to their combined effects. The present study aimed to replicate independent effects of breathing and nature on stress and to test for potential effects, including whether their combination would produce an interaction effect. Using a 2 Environment (Natural v. Control) by 2 Breathing (Slow v. Normal) between-subjects design, 63 participants completed a modified color-word Stroop task to induce stress and were then exposed to either …

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Long-Term Relationships Between Tree Growth And Climate In The Trinity Alps Wilderness, Klamath Mountains, California, Usa, Emma R. Knepp Jan 2026

Long-Term Relationships Between Tree Growth And Climate In The Trinity Alps Wilderness, Klamath Mountains, California, Usa, Emma R. Knepp

Cal Poly Humboldt theses and projects

The Trinity Alps Wilderness is a unique setting for evaluating late-Holocene climate variability because former glaciers occupied comparatively low elevations in a region influenced by both coastal and interior climate patterns. Tree-ring chronologies were developed from four conifer species—Shasta red fir (Abies magnifica var. shastensis), western white pine (Pinus monticola), Brewer’s spruce (Picea breweriana), and mountain hemlock (Tsuga mertensiana)—sampled at high elevations (1950 - 2300 m) near Emerald and Grizzly Lakes in the Trinity Alps Wilderness in northern California. The final chronologies included 12 Shasta red fir trees, 12 western white pine …

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Species Boundaries Of The Rare Menzies’ Wallflower (Brassicaceae: Erysimum Menziesii), An Endemic Of The Northern California Coast, Cameron M. Jones Jan 2026

Species Boundaries Of The Rare Menzies’ Wallflower (Brassicaceae: Erysimum Menziesii), An Endemic Of The Northern California Coast, Cameron M. Jones

Cal Poly Humboldt theses and projects

Morphological similarity among geographically isolated populations can obscure deep evolutionary divergence, especially when convergent evolution under similar environmental conditions yields comparable phenotypes across independent lineages. Such cryptic diversity is likely underestimated in hotspots like the California Floristic Province (CFP), a global biodiversity hotspot, defined by its Mediterranean-like climate and encompassing most of California, southwestern Oregon, and northwest Baja California. The CFP is home to a disproportionate number of narrow endemics whose origins and evolutionary relationships remain poorly understood. Here, I investigate the evolutionary origins of Erysimum menziesii (Brassicaceae), a federally endangered California coastal dune endemic whose fragmented distribution has led …

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Rethinking Belonging In First-Year Student Support: A Mixed-Methods Evaluation Of Eop/Sss Programing At Cal Poly Humboldt, Elizabeth Rose Silver Jan 2026

Rethinking Belonging In First-Year Student Support: A Mixed-Methods Evaluation Of Eop/Sss Programing At Cal Poly Humboldt, Elizabeth Rose Silver

Cal Poly Humboldt theses and projects

This mixed-methods project examines the role of the Educational Opportunity Program and Student Support Services (EOP/SSS) first-year orientation programs, particularly STEM Summer Bridge, in supporting feelings of belonging and persistence. While institutional efforts often frame student success through metrics such as retention and concepts like sense of belonging, this project interrogates how these are experienced and understood by students themselves. Quantitative analyses compared one-year persistence rates between STEM Summer Bridge participants and multiple comparison groups across three cohorts (2022–2024). Results showed no statistically significant differences in persistence; however, STEM Summer Bridge participants demonstrated persistence rates comparable to or slightly higher …

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Ectomycorrhizal Fungi Associated With Pinus Species Of California's Northwestern Coast, Monika Audrey Richardson Jan 2026

Ectomycorrhizal Fungi Associated With Pinus Species Of California's Northwestern Coast, Monika Audrey Richardson

Cal Poly Humboldt theses and projects

Ectomycorrhizal (ECM) fungi are vital for increasing host plant uptake of nutrients and stress tolerance within ECM forest ecosystems. The species assemblage of ECM fungi can vary locally in response to numerous biotic and abiotic environmental factors. In California’s northwestern coast the occurrence of three Pinus species, along with a disjunction between populations of Pinus muricata in Mendocino and Humboldt Counties, offer a unique opportunity to investigate the spatial and host effects on pine-associated ECM fungi. Ectomycorrhizal fungal community structure was quantified from host tree roots and sequenced sporocarps occurring at the same sites to create a project specific ITS …

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Neoliberalism And The Crimes Of The Powerful: Transforming The State During The First Trump Era (2017-2021), Charles Brandon Lonon Jan 2026

Neoliberalism And The Crimes Of The Powerful: Transforming The State During The First Trump Era (2017-2021), Charles Brandon Lonon

Cal Poly Humboldt theses and projects

This thesis examines the way the American capitalist state transformed during Donald Trump’s first presidential term (2017-2021), especially focusing on neoliberal policy and the framework of the crimes of the powerful. This thesis aims to answer the question of how neoliberalism transformed the state under Donald Trump. Drawing on Nicos Poulantzas’ theory of authoritarian statism and Frank Pearce’s conception of crimes of the powerful, this thesis examines how the state becomes more authoritarian to protect capital accumulation and the capitalist class. The research shows that Trump weaponized authoritarian populist rhetoric that targeted women, immigrants, and vulnerable populations to build support …

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Assessing A Half-Century Of Change In Understory Plant Range And Frequency In The Klamath Mountains Of California, Emily Jean Jackson Jan 2026

Assessing A Half-Century Of Change In Understory Plant Range And Frequency In The Klamath Mountains Of California, Emily Jean Jackson

Cal Poly Humboldt theses and projects

The effects of climate change have and will continue to impact plant communities, including by potentially shifting species’ ranges towards topographically sheltered, cooler locations or higher elevations. In 2024, I resampled 140 vegetation plots established in 1969 in the Klamath Mountains of Northern California to assess range shifts of 46 understory species over a 55-year period. During this time, the elevational distribution of all species has increased significantly by an average of 26.9 m, but this increase was slower than necessary to track historic temperature niches given regional warming (215-311 m). Despite this overall increase, only four species exhibited significant …

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Taking A Seat In The Circle: Decolonizing Gender Roles That Argue Against The Participation Of Feminine Bodies At The Big Drum, Juli Suzukawa Jan 2026

Taking A Seat In The Circle: Decolonizing Gender Roles That Argue Against The Participation Of Feminine Bodies At The Big Drum, Juli Suzukawa

Cal Poly Humboldt theses and projects

The origins of the Big Drum can be traced back to the 1860s when Tail Feather Woman, a Dakota woman, had a vision of its creation as a tool of resistance. The Big Drum has since expanded and can now be seen at various Indigenous ceremonies and social events. However, there has been controversy regarding the participation of feminine and queer bodies. While reasons for this vary, it has also contributed to harm amongst Indigenous youths that have a more fluid stand on gender identity and may not conform to colonial “gender norms”. In this paper, I will explore how …

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Assessing Coho Salmon (Oncorhynchus Kisutch) Distribution Using Traditional Sampling Methods In Conjunction With Edna On Trinity River Tributaries Within The Hoopa Tribal Boundaries, Ely D. Boone Jan 2026

Assessing Coho Salmon (Oncorhynchus Kisutch) Distribution Using Traditional Sampling Methods In Conjunction With Edna On Trinity River Tributaries Within The Hoopa Tribal Boundaries, Ely D. Boone

Cal Poly Humboldt theses and projects

Detecting the presence of species using environmental DNA (eDNA) is a fast-growing field of study that shows much promise for population monitoring. In fisheries biology, eDNA is a potentially powerful tool compared to traditional fisheries monitoring techniques such as visual observation via snorkel surveys. When eDNA and traditional survey methods are employed in tandem, using the same spatial and temporal sampling design, eDNA often detects target species when traditional methods do not. In this study, instead of utilizing this paired study design, I implemented eDNA and snorkel surveys at different sampling scales with eDNA being collected at a single downstream …

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Supporting Risky Outdoor Play Through Professional Development: A Quasi-Experimental Study Of Tk–6 Educators’ Attitudes, Justin Ross Burrill Jan 2026

Supporting Risky Outdoor Play Through Professional Development: A Quasi-Experimental Study Of Tk–6 Educators’ Attitudes, Justin Ross Burrill

Cal Poly Humboldt theses and projects

Children’s opportunities for active outdoor risky play have declined in many educational settings, despite evidence that manageable risk supports physical activity, self-regulation, confidence, resilience, and social participation. Educator attitudes and school culture may play an important role in determining whether children are offered developmentally appropriate opportunities for challenge, exploration, and autonomy. This quasi-experimental, single-group pretest-posttest study examined whether participation in a single-session professional development workshop was associated with changes in educators’ tolerance of risk in children’s play. Thirty educators attended a workshop focused on risky play, hazard-risk differentiation, inclusion of children with disabilities, loose-parts play, environmental affordances, and practitioner-informed implementation …

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Reclaiming Presence: An Anthropological Study Of Digital Disconnection And Meaning-Making, Leslie De Paz Jan 2026

Reclaiming Presence: An Anthropological Study Of Digital Disconnection And Meaning-Making, Leslie De Paz

Cal Poly Humboldt theses and projects

Human attention is increasingly at risk in an unregulated digital ecosystem where overconsumption shapes neurological function, social interaction, and the ways people make meaning of everyday life. Dominant discourse around digital overuse tends to medicalize the problem, framing it as individual addiction or clinical dysfunction. In this thesis, I argue that such framing obscures what a cultural phenomenon is fundamentally, one in which people are actively questioning their relationship with technology, building awareness, and developing practices that help them slow down and reclaim agency within algorithmically mediated environments. This study draws on 22 semi-structured interviews with Gen Z and millennial …

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Contribution Of Lagoon-Rearing Juvenile Chinook Salmon (Oncorhynchus Tshawytscha) To The Adult Spawning Population In The Mattole River, Emma Held Jan 2026

Contribution Of Lagoon-Rearing Juvenile Chinook Salmon (Oncorhynchus Tshawytscha) To The Adult Spawning Population In The Mattole River, Emma Held

Cal Poly Humboldt theses and projects

Bar-built estuaries are rivermouth confluences characterized by periods of disconnection between the river and the ocean due to a sandbar that builds across the mouth. Sandbar timing characteristics vary between years and between systems, but when closed, a lake-like lagoon forms in the estuary footprint. The Mattole River has a bar-built estuary that forms in late spring or early summer, often overlapping with juvenile Chinook salmon outmigration. Juveniles that do not leave the river before the bar closes must remain in the lagoon until the mouth opens in fall. The purpose of this thesis was to understand if lagoon-rearing is …

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Evidence Of Personality And Movement Syndromes In A Mobile Predator: How Individual Hunting Strategy Shapes Ecosystem Service Potential By Barn Owls (Tyto Furcata) In An Agroecosystem, Lauren M. Jackson Jan 2026

Evidence Of Personality And Movement Syndromes In A Mobile Predator: How Individual Hunting Strategy Shapes Ecosystem Service Potential By Barn Owls (Tyto Furcata) In An Agroecosystem, Lauren M. Jackson

Cal Poly Humboldt theses and projects

Animal-mediated ecosystem services are delivered through the behavior of individuals, yet most studies evaluate service-providing species at the population level. We tested whether individual variation in plumage, behavior, and movement predicted hunting behavior and vineyard habitat use by adult male American barn owls (Tyto furcata) nesting in winegrape vineyards in Lodi, California, USA. We fitted GPS-accelerometer tags to 42 breeding males, quantified breast-plumage traits, measured neophobia using repeated novel object tests, and derived nightly movement metrics from GPS tracks and hidden Markov model-classified hunting locations. Several behavioral traits were repeatable, but movement traits showed the clearest repeatable individual …

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Testing Adaptive Habitat Selection In Breeding Swainson's Hawks (Buteo Swainsoni), Elizabeth Meisman Jan 2026

Testing Adaptive Habitat Selection In Breeding Swainson's Hawks (Buteo Swainsoni), Elizabeth Meisman

Cal Poly Humboldt theses and projects

Adaptive habitat selection theory predicts that individuals preferentially select habitats that maximize or improve their fitness. However, patterns of habitat preferences may dampen with increasing population density and become decoupled from habitat quality when environmental conditions change. Such dynamics may be especially important in long-lived territorial species that exhibit site fidelity. One of the longest running raptor studies in North America has tracked an increasing population of breeding Swainson’s Hawks (Buteo swainsoni) in Butte Valley, California since 1985, where agricultural practices have shifted over the decades, providing an ideal system for studying these processes. Using nest records from …

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Endocranial Lesions: A Paleopathological Study Of Late Medieval Skeletal Remains From Żelewo Poland, Francesca Aleen Meyer Jan 2026

Endocranial Lesions: A Paleopathological Study Of Late Medieval Skeletal Remains From Żelewo Poland, Francesca Aleen Meyer

Cal Poly Humboldt theses and projects

The site of Żelewo is located in a rural area of northwestern Poland, a region historically known as Pomerania. Skeletal remains from the cemetery associated with the archaeological site Żelewo 1-3, dating mostly to the 13th-15th centuries, are likely associated with a nearby Cistercian monastery. Numerous individuals from this site show evidence of endocranial lesions. To evaluate potential factors associated with the lesions, a differential diagnosis was performed based on macroscopic observations of endocranial lesion morphology and distribution. This study takes into account estimated age at death, biological sex, and other signs of pathology in the body. Potential confounding factors, …

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“Thank You For Listening To Us”: Incorporating Community Context And Perspectives Into Sea-Level Rise Adaptation Planning For Fields Landing & King Salmon, California, Clara Riggio Jan 2026

“Thank You For Listening To Us”: Incorporating Community Context And Perspectives Into Sea-Level Rise Adaptation Planning For Fields Landing & King Salmon, California, Clara Riggio

Cal Poly Humboldt theses and projects

Fields Landing and King Salmon, California are two low-lying, coastal communities on Humboldt Bay (Wigi). These communities already experience coastal flooding during the highest astronomical tides each year, and flood conditions are expected to worsen as sea levels continue to rise. The Fields Landing & King Salmon (FLKS) Living with Water Project was created as a partnership between Humboldt County departments of Planning & Building and Public Works, along with support from social science researchers at Cal Poly Humboldt, including the author. In Chapter 1, I describe the co-production approach used throughout the project, including analysis of four dilemmas that …

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Living With Water In Fields Landing & King Salmon: Community Knowledge Of Flooding And Adaptation Strategies In Coastal California, Kailin Sepp Jan 2026

Living With Water In Fields Landing & King Salmon: Community Knowledge Of Flooding And Adaptation Strategies In Coastal California, Kailin Sepp

Cal Poly Humboldt theses and projects

Known as “ground zero,” Humboldt Bay is among the most vulnerable areas to sea-level rise (SLR) due to geological and tectonic factors on the West Coast. While the land subsides, oceans rise, resulting in an area with one of the highest recorded rates of relative SLR on the West Coast. The residential communities of Fields Landing and King Salmon in South Humboldt Bay already experience regular coastal flooding. There is a need for better information and planning to understand the vulnerability to flooding/SLR and plan for adaptation. Typically, studies addressing flooding, such as vulnerability assessments and adaptation plans, are developed …

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A Framework For Evaluating Riparian Climate Refugia In The Eel River Watershed, California, Farrah Tyler Jan 2026

A Framework For Evaluating Riparian Climate Refugia In The Eel River Watershed, California, Farrah Tyler

Cal Poly Humboldt theses and projects

Climate change is increasing the need to identify and protect landscapes that support biodiversity through both habitat connectivity and climate refugia. Climate refugia are areas that remain relatively buffered from regional climatic change, enabling species to persist despite shifting environmental conditions. Riparian ecosystems can function as both movement corridors and climate refugia, yet methods for identifying these features and understanding the environmental processes that sustain them remain limited. In California's North Coast region, the identification and conservation of watersheds that may serve as climate refugia for sensitive plant and animal species will be essential for long-term ecosystem management and conservation. …

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Multiple Burn And Forest Characteristics Affect Gray Fox (Urocyon Cinereoargenteus) Occurrence Following A California Megafire, Amida Zohar Verhey Jan 2026

Multiple Burn And Forest Characteristics Affect Gray Fox (Urocyon Cinereoargenteus) Occurrence Following A California Megafire, Amida Zohar Verhey

Cal Poly Humboldt theses and projects

In western North American forests, predator communities are faced with changing fire regimes and increased fire severity and size, particularly with megafires (>10,000 ha). As some wildlife communities may restructure following the loss of apex consumers, understanding post-fire space use of mid-trophic carnivores may inform species composition in these forests. I compared gray fox (Urocyon cinereoargenteus) occupancy in and around the 2021 Dixie Fire, the largest single-ignition fire in California state history, to examine which spatially variable burn and forest characteristics affected the space use of a widespread generalist mesopredator. Using 210 camera traps placed in 2023, …

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