Environmental Studies Commons^™

Unveiling Microplastic Removal And Characteristics In Wastewater From Two Municipal Wastewater Treatment Facilities In Indonesia, Nurul Setiadewi, Prayatni Soewondo, Cynthia Henny

Applied Environmental Research

Wastewater treatment plants (WWTPs) are considered an entrance pathways for microplastic (MP) pollution in aquatic environments. This study reveals the removal and characteristics of MPs in wastewater from two municipal WWTPs in Indonesia. The influent contained 17.1 ± 5.65 particles L-1 (WWTP A) and 15.45 ± 4.31 particles L-1 (WWTP B), whereas the effluent contained 1.41 ± 0.01 and 1.5 ± 0.16 particles L-1. The removal efficiency was 91.75% for WWTP A and 90.32% for WWTP B, with no statistically significant difference (p > 0.05). WWTP A employed advanced treatment units, whereas WWTP B used a conventional pond-based system. MPs were …

Assessment Of The Influence Of Human Activities On The Occurrence Of Forest Fires In Thailand Via Multiple Linear Regression (Mlr), Sittipong Ruktamatakul, Jirarat Insuk, Benjaporn Pinwongpet, Sarisa Ruktametakul, Pornpis Yimprayoon

Applied Environmental Research

Forest fires represent one of the most critical environmental challenges in Thailand, with impacts varying depending on forest type, fuel characteristics, terrain conditions, fire intensity, and the frequency of fire occurrence on the same landscape. While forest fires can contribute to ecosystem degradation, biodiversity loss, and the depletion of natural resources, such effects are not uniformly severe across all forest ecosystems. Understanding the human-induced factors contributing to forest fire occurrence is crucial for developing effective prevention strategies and promoting sustainable forest management. This study aimed to identify the anthropogenic factors influencing forest fire areas in Thailand via multiple linear regression …

Effect Of Chromium Doping On The Uv- And Sunlight-Driven Photocatalytic Performance Of Srtio3, Ro’Ikhatul Jannah, Dianisa Khoirum Sandi, Fahru Nurosyid, Risa Suryana, Didier Fasquelle, Yofentina Iriani

Applied Environmental Research

Chromium (Cr)-doped strontium titanate (SrTiO3, STO) photocatalysts with compositions of SrTi1-xCrxO3 (x = 0, 5, and 10%) were prepared via the coprecipitation method. This study aimed to investigate the effects of Cr doping on structural, morphological, and optical properties. Furthermore, this work aimed to examine the photocatalytic performance of pure and Cr-doped STO against methylene blue (MB) degradation under ultraviolet (UV) and sunlight exposure. X-ray diffraction confirmed the formation of the cubic STO phase and the insertion of the Cr dopant in the STO structures. Furthermore, Cr doping reduced the lattice constant, crystallite size, and average particle size and narrowed …

A Photographic Exploration Of Humboldt's Coastal Lagoons, Aldaron Laird

Trade & Scholarly Monographs

This visually stunning book shows the same meticulous artistry that Aldaron displayed when depicting Wigi, but it shows places so different from Humboldt Bay that they seem to be of a different world. And in a sense they are, for the imprints of modern Humboldt County are here much less frequent and far, far gentler. Instead, we see the land of the Coastal Yuroks, which in many places is little changed from what it was like before the arrival of the Whites a hundred and seventy-five years ago. The only buildings we see are those of the traditional Yurok style, …

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 …

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 …

Weaponized Borders: A Contrapuntal Analysis Of Uneven Humanitarian Aid And Comparative Landscapes, Alex Orla-Bukowski

Cal Poly Humboldt theses and projects

The proliferation of global border regimes has caused an increased level of state violence against humans and the environment. In this thesis I explore how contemporary border regimes propagate myths on human mobility, obstruct humanitarian policy, and weaponize environmental landscapes to sustain state violence while obscuring political responsibility. Building on this, I argue that borders are the source of violence and create systems of vulnerability as a core-function of state making. My research primarily utilizes semi-structured interviews with humanitarian actors and secondary data analysis to trace the testimonies of those subject to state-based harm and explore the gaps in aid …

Reactionary Radicals, Radical Reactionaries: A Review Of Against The Machine: On The Unmaking Of Humanity, Michael Kirby

Publications and Research

Paul Kingsnorth, in his book Against the Machine: On the Unmaking of Humanity, asserts that the ecological destruction, consumerism, and social atomization that have come to define contemporary life are the product of a malevolent force he calls the Machine. This review finds that his proposed solution to these crises, namely a return to "traditional" forms of family and community, insufficiently addresses the material and structural conditions underlying the capitalist mode of production. Kingsnorth’s dismissal of Marxism is then interrogated by juxtaposing his critique of the Machine with Marx’s analysis of estranged labor. Finally, this review concludes that the …

Triangulating Primary Sources, Professional Judgement, And Llm-Generated Summaries: Educating Nurses In An Ai-First World, Sarah Oerther, Daniel B. Oerther

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

No abstract provided.

Understanding Waste Management Knowledge And Habits Of Senior High School Students In Lianga, Surigao Del Sur, Philippines, Arnele Mie A. Fanuga, Romy M. Avila, Reyl Justine J. Ballena

ASEAN Journal on Science and Technology for Development

The effective implementation of Solid Waste Management (SWM) in educational institutions is challenged by increasing student populations, limited infrastructure, and inconsistent policy enforcement. This study assessed the Knowledge, Attitudes, and Practices (KAP) of senior high school students regarding SWM in three secondary schools in Lianga, Surigao del Sur, Philippines. Data were collected using a descriptive-correlational design from 150 students selected through quota sampling. Pearson’s correlation analysis revealed significant associations between knowledge and attitude, and between attitude and practice. Knowledge scores were positively correlated across the three secondary schools. Students demonstrated a high level of awareness of the environmental and health …

Lake As Body: Ecofeminism And Animacy At The Great Salt Lake, Shae Barber

Graduate Student Theses, Dissertations, & Professional Papers

Water shapes cultural, social, and ecological systems. Yet, dominant economic, political, and academic frameworks often treat water as a backdrop or passive resource, ignoring it as an active participant in meaning-making and relationship-building. Viewing water as “nonliving” obscures how it participates in and co-creates relationships, limiting understanding about impacts of and responses to climate change and environmental degradation.

This thesis takes a mixed-methods and participatory approach including semi-structured interview, photovoice, and participatory mapping to examine relational practices between environmental advocates and the Great Salt Lake, a desiccating saline lake in Utah, U.S. As the lake continues to decline, dominant Western …

A Psychogeography Of The Lower Colorado River Basin, Arren L. Kimbel-Sannit

Graduate Student Theses, Dissertations, & Professional Papers

Dried-up canals. Superheated strip malls. Proliferating data centers. Infinite appetite for growth despite its apparent circumstances. Arizona may well be the state of the American future. This multi-genre series of essays from Arren Kimbel-Sannit offers a personal, political-economic and ecological critique of growth and accumulation in Arizona — from the perspective of someone who grew up in its suburban expanses, reported on its politics, and long sought to clarify his relationship with home.

Learning In The Wild: A Discourse Analysis Of Literacy Practices And Educational Outcomes In Montana’S Youth Climate Activism, Tyler Moore

Graduate Student Theses, Dissertations, & Professional Papers

This thesis examines youth climate activism in Montana as a site of literacy practice, civic learning, and critical climate engagement. Focusing on the University of Montana Climate Response Club, the study asks how youth climate activists use literacy practices to interpret climate issues and participate in civic action, and how those practices reflect elements of critical climate literacy. The study defines critical climate literacy as a set of socially situated practices through which young people read, interpret, question, and respond to climate change as both an environmental issue and a civic problem shaped by power. Rather than treating climate literacy …

Learning For A Sustainable Future: Embedding Sustainability Literacy In Honors Curricula Within Higher Education, Zoe E. Belinda

Undergraduate Theses, Professional Papers, and Capstone Artifacts

This research investigates the sustainability literacy levels of first-year Davidson Honors College (DHC) students at the University of Montana (UM) to develop a baseline for average sustainability knowledge at the beginning of students’ post-secondary education. The goals of this research are to (1) determine if there are differences in sustainability literacy scores between students in sustainability-related fields of study and their counterparts, (2) identify weaknesses in students’ current sustainability literacy, and (3) develop curriculum suggestions to improve sustainability knowledge. To address these research questions, all first-year DHC students in 2024 and 2025 were surveyed using a modified version of the …

Religiosity And Political Affiliation As Moderators For Climate Change Belief, Jenna L. Hiljus

Doctor of Psychology (PsyD)

Climate change remains a polarized issue in the United States despite broad scientific consensus. The present study examined how specific variables within political ideology (social and economic conservatism) and religiosity (belief, praxis, and morality) relate to climate change belief among undergraduate students at a private Christian university. Participants (N = 130) completed measures of climate change perceptions, multidimensional religiosity, and social and economic conservatism. Correlational analyses showed medium-sized, negative relationships between climate change belief and both social and economic conservatism, with no significant difference between the two domains. This finding suggests that political conservatism may operate as a unified construct …

Electric Vehicle Industry: Japan And China, Minoo Tehrani, Yu Cui

Business Faculty Publications

This research concentrates on the electric vehicle (EV) industry in China and Japan. China is the largest and Japan the third-largest auto production country after the U.S. This study explores the current and future transition to battery electric vehicles and hybrid electric vehicles in Japan and China. Three Japanese auto companies, Toyota, Honda, and Nissan, and BYD from China are studied in this research. Toyota, Honda, and Nissan are actively pursuing the development of hybrid electric vehicles in Japan. Meanwhile, the research examines the Chinese EV company BYD, which is a major global competitor in the EV industry. This study …

Public Perception Of Environmental Contamination And Its Implications For Fish And Community Health In West Bengal, India, Libia Hazra

Dissertations, Master's Theses and Master's Reports

In West Bengal, India, the highest fish-consuming state in the country, fish are woven into everyday life, including ceremonies of birth and marriage, prayers offered during harvesting and the cultural memory of communities whose identities are inseparable from aquatic life. However, the rivers, wetlands, and ponds that sustain these fish-human relationships are increasingly threatened by environmental contamination resulting from industrial discharge, agricultural runoff, and inadequate environmental management. Understanding how communities perceive these environmental changes is essential for developing effective conservation and public health strategies.

In collaboration between the Indian Institute of Technology (ITT) Kharagpur, India, and Michigan Technological University (USA), …

Enhancing Coastal Vulnerability Assessments And Policy Impacts On Socioeconomic And Environmental Equity In Michigan's Great Lakes Communities, Esther N. Acheampong

Dissertations, Master's Theses and Master's Reports

Accelerating shoreline erosion, fluctuating lake levels, and climate-induced hazards are transforming the Great Lakes’ freshwater coasts, exposing the limitations of static and inequitable management frameworks. This dissertation investigates how Michigan’s coastal governance systems produce and manage vulnerability along the Lake Michigan shoreline by integrating geospatial modeling, institutional policy analysis, and environmental justice theory. It argues that both physical processes and institutional designs co-determine patterns of exposure, protection, and equity. The research begins by developing a refined Coastal Vulnerability Index (CVI) tailored for lacustrine environments, applying it to Muskegon County to assess how shoreline change, armoring, and seasonality influence localized risk. …

Lessons For Transformative Ocean Science From The Integrated Marine Biosphere Research (Imber) Project, Deborah Santos Prado, Ella-Kari Muhl, Mia Strand, Derek Armitage, Nina Bednaršek, Stephanie Brodie, Christopher Cvitanovic, John Claydon, Sam Dupont, Karen Evans, Alistar Hobday, Eileen Hofmann, Raleigh Hood, Laura Kaikkonen, Dongyan Liu, Jessica Melbourne-Thomas, Franz Mueter, Eugene Murphy, Prateep Kumar Nayak, Alice Newton, Heidi Pethybridge, Carol Robinson, Samiya Selim, Rowan Trebilco, Micaela Trimble, Fang Zuo

CCPO Publications

This paper synthesizes the key contributions and lessons learned from Integrated Marine Biosphere Research (IMBeR), a large-scale global research project aimed at fostering ocean sustainability under global change for the benefit of society. The UN Decade of Ocean Science for Sustainable Development has catalyzed a renewed focus on the importance of transforming ocean science. IMBeR’s global activity over the past decade has focused on promoting transformative science by generating, mobilizing, and communicating the knowledge needed to support ocean governance. Key contributions from IMBeR participants include quantifying and comparing historic and present structure and functioning of linked ocean and human systems, …

Agency Of Different Actors In China Through The Utilization Of Community-Level Environmental Education, Matthew K. Leung

Pitzer Senior Theses

Large national Chinese frameworks such as the Chinese Dream and Ecological Civilization currently provide frameworks for Xi Jinping’s governance of China. However, these large national frameworks have fractured into individual interpretations. Literature on Authoritarian Environmentalism and nongovernmental actors in Chinese Environmental Governance are examined to give a framework in which to view the following research. This thesis examines how these frameworks are interpreted and reinterpreted on the ground level through the lens of community level environmental education by three different actors: local government officials, individuals, and the community. Case studies are examined for each of these actors. We deflatten the …

A Guide To Growing Broad: : Expanding The Notion Of Social For Mental Health, Natural Resources, And The Infinite Intersections Of How To Care For The World, Leah D. Nuese-Yaker

Graduate Student Portfolios, Professional Papers, and Capstone Projects

This MSW portfolio narrative examines the expanding boundaries of social work practice at the intersection of human and ecological systems. Organized as a series of interconnected personal essays structured around river metaphors, the portfolio argues that social work's anthropocentric foundations limit the profession's capacity to address contemporary crises of environmental justice, climate change, and ecological health. Drawing on fieldwork in natural resources conflict resolution, wilderness therapy, outdoor education, and climate health advocacy in rural Montana, the author demonstrates competency across all ten CSWE social work practice behaviors while advancing a practice framework that centers relational, embodied, and ecologically grounded intervention. …

Assessing Flood Resilience In West Virginia Communities: Integrating Physical, Institutional, Socioeconomic, And Environmental Dimensions, Anahita Mahmoudi

Graduate Theses, Dissertations, and Problem Reports (ETD)

Flooding is one of the most frequent and damaging natural hazards in the United States, with impacts expected to intensify under changing climate conditions. In regions such as West Virginia, complex terrain, development patterns along river corridors, and socioeconomic disparities contribute to elevated flood risk. Traditional approaches to flood risk assessment often focus on single dimensions of vulnerability or rely on binary floodplain maps, which do not fully capture the spatial variability and multidimensional nature of flood resilience.

This dissertation develops an integrated, community-scale framework for assessing flood resilience in West Virginia by combining physical, environmental, institutional, and socioeconomic dimensions …

Swimming In Uncertainty: Filling Data Gaps And Providing An Educational Platform For Beach Water Quality At Tybee Island, Georgia, Lukas Roberson

College of Graduate Studies: Theses & Dissertations

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Swimming in beaches water contaminated with high levels of bacteria can make you sick. Current monitoring at the public beaches on Tybee Island consists of weekly monitoring and enumeration of fecal indicator bacteria that takes 24 hours for results. If the number of bacteria exceed regulatory limits, a public health advisory is issued, and affected waters are retested until …

Inequality In The Urban Forest: Modeling Tree Canopy Dynamics Through Demographics And Restoration Strategies, Eve Johansson

Honors Theses

Urban tree canopies play an important role in environmental quality, public health, and neighborhood livability, yet their distribution is highly uneven and often reflects historical patterns of inequality. In Brooklyn, long-term processes such as redlining, uneven development, and demographic change have contributed to persistent disparities in access to green space.

This thesis examines how urban tree canopy evolves across space and time in Brooklyn and how different restoration strategies affect long-run outcomes. The analysis uses demographic and canopy data from 1990-2020, considering race, income, employment, and educational attainment. Among these, education is the most consistent predictor of canopy coverage, with …

The Evolution Of California Wildfire Governance Through State Bills, Regulations, And Executive Actions, Cassandra Dawn Blevins

History and Political Science | Senior Theses

California faces an escalating wildfire crisis, driven by climate change, drought, and development in fire-prone areas. Despite decades of scientific research on wildfire behavior and risk reduction, catastrophic fires since 2017 raise a critical question: to what extent have California state laws and policies kept up with the intensifying wildfire crisis? Existing scholarship provides extensive insight into wildfire ecology, land-use planning, fuel management, and community resilience, yet it lacks a comprehensive evaluation of whether California’s legislative, regulatory, and executive actions have adapted in a coordinated and evidence-informed manner. In particular, the literature offers limited analysis of how state laws integrate …

A Transdisciplinary Approach To Advancing Water Security And Public Health: The “Nurse + Engineer” Model For Achieving Sustainability In Wash Systems Using Community-Based Participatory Research, Daniel B. Oerther, Sarah Oerther

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Human health is linked to the health of the environment, a concept referred to as planetary health. As environmental challenges become increasingly complex, single-disciplinary approaches are insufficient to achieve sustainable solutions. This article presents a transdisciplinary framework, termed the "Nurse + Engineer" model, as a novel methodology for addressing complex problems at the nexus of environmental engineering and public health. The model integrates the technical design and systems-level thinking of environmental engineering with the community-based, patient-centered care of nursing. This work details the key lessons learned from the retrospective application of this framework to a series of multi-year, community-based participatory …

Environmental Engineers Develop Solutions To Problems Of Planetary Health: The Legacy Of Professor P. Aarne Vesilind, Daniel B. Oerther

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

The principal ethical obligation of the engineering profession, to "hold paramount the health, safety, and welfare of the public," has been challenged for decades. Professor P. Aarne Vesilind identified two primary deficiencies: an anthropocentric bias that values nature only instrumentally and the use of non-mandatory, aspirational language for environmental protection, which resulted in the exclusion of enforceable environmental canons. This paper argues that two recent developments provide a comprehensive response to Vesilind's recommendations for engineering ethics. First, the United States Bureau of Labor Statistics has redefined environmental engineering as "developing solutions to problems of planetary health." Second, Oerther proposed a …

Neonicotinoid Bioaccumulation In Bluegill And Bullhead Within Lake Julia And Lake Zumwalde, Jake Stuber

Journal of Earth and Life Science

Brown Bullhead Ameiurus nebulosus, Yellow Bullhead Ameiurus natalis, and Bluegill Lepomis macrochirus are unique in their stark differences. Bullhead are scaleless bottom feeders that can tolerate high pollution and low O₂ conditions. In contrast, Bluegill are scaled, aggressive nesters and are less tolerant of high pollutants or low-oxygen conditions. Among these pollutants include a class of chemicals called neonicotinoids (hereafter referred to as neonics). Neonics are a class of insecticides primarily used within agriculture and pest management. Due to the effectiveness, application has escalated on a global scale. They have been well documented by many toxicology assessments. …

Indigenous Land Seizure & Environmental Injustice: Impacts Of Settler Colonialism, Lydia Moorman

Journal of Earth and Life Science

The fields of conservation and environmentalism prioritize ecosystem health, yet both emerged from western frameworks that displaced and criminalized Indigenous land stewardship. The idealization of “pristine wilderness” narratives served to justify the removal of Indigenous peoples from their homelands and erased millennia of sustainable land stewardship that had maintained ecological balance long before western conservation existed. These narratives not only misrepresented Indigenous relationship with land but also constructed a false dichotomy between humans and nature that positioned Indigenous presence as a threat rather than a source of ecological knowledge. Simultaneously, anthropogenic expansion; such as pipelines, mining, railroads, and other extractive …

Powering The Machine, Draining The Planet: Whether U.S. Environmental Law Is Equipped To Regulate The Energy And Water Demands Of Ai Data Centers, Michael Marcu

Journal of Earth and Life Science

Artificial intelligence (AI) data centers have become one of the United States' fastest-growing and least-regulated sources of environmental stress. In 2024 alone, U.S. data centers consumed 183 terawatt-hours (TWh) of electricity more than the entire nation of Pakistan and consumed an estimated 17 billion gallons of water (IEA, 2025; Berkeley Lab, 2024). By 2030, electricity demand from these facilities is projected to reach 426 TWh, a 133% increase in six years (Pew Research Center, 2025). This paper examines whether the existing U.S. environmental regulatory framework put by the National Environmental Policy Act (NEPA), the Clean Water Act (CWA), and the …