Digital Commons Network^™

Decarbonized Shipping: Is It The Best Sustainable Shipping Solution?, Olivia Akers

Sustainable Supply Chain Management

In the era of globalization and the fourth industrial revolution, the maritime shipping industry has grown exponentially in the twenty-first century. In fact, 90% of today’s goods travel across the ocean before reaching the end consumer, meaning that ocean transportation of goods contributes significantly to overall environmental impacts on the ocean. Awareness of this impact has increased as humans strive to eliminate unsustainable practices in an effort to protect the long term health of our planet. Decarbonized shipping has been proposed as a possible solution for unsustainable shipping practices, and the goal of this chapter is to evaluate this solution …

Re: Comment Letter For The Butte Priority Soils Operable Unit (Bpsou) Insufficiently Reclaimed Sites Bres No. 158 – Waste Rock Dump Remedial Action Work Plan (Rawp) (Dated March 28, 2025), Molly Roby

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Re: Approval Letter For The Butte Priority Soils Operable Unit (Bpsou) Revised Draft Final Insufficiently Reclaimed Sites Bres No. 158 Site Evaluation Summary Report (Dated February 24, 2025), Molly Roby

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

The State Of Municipal Scale Highest Use Urban Wood Reclamation Projects, Bradley C. Almond

Graduate Liberal Studies Theses and Dissertations

Millions of urban trees are downed annually for various reasons, such as storms, disease, or development. We are all witnesses to the loss of trees as we see the piles of woody waste assembled on the curbside, ready for public works pickup. Today, most urban wood waste ends up in landfills, mulching/chipping facilities, or firewood production. Each of these alternatives results in the release of sequestered carbon back into the atmosphere.

The initial research led to successful diversion from landfills to mulch and firewood operations. Then, the research shifted to converting urban wood waste for its best use, which outlined …

Evaluating San Francisco Urban Green Spaces And Policy To Inform Future Decision-Making: How Climate Change Adaptation Strategies Can Be Prioritized And Incorporated In Urban Park Design And Planning Through A Decision-Making Tool, Holley Anne Maassen

Master's Projects and Capstones

Amid the current climate crisis, enhancing urban green spaces (UGS), parks, and open spaces with climate change adaptation (CCA) as a strategic pillar in San Francisco’s urban planning is an essential strategic pillar to develop more resilient cities. However, in complex bureaucratic landscapes, integrating CCA strategies that meet project goals while ensuring inclusive stakeholder engagement presents a challenge. This project presents the identification, development, and application of a holistic decision-making tool (DMT) in the form of a Pugh matrix/decision matrix and with a focus on urban planning in San Francisco, California. Key decision-making criteria are identified and weighted through a …

Floating Pv In Bulawayo: Evaluating Evaporation Mitigation, Energy Yields And Economic Viability., Fidelis Hazvineyi Dambudzo Gorogodo

Master's Projects and Capstones

Water scarcity and energy shortages are critical challenges in Zimbabwe, particularly in the semi-arid regions reliant on reservoir-based water supply systems. Evaporation losses from water reservoirs amplified by rising global temperatures has become a concern, particularly for Zimbabwe which has a relatively low water per-capita (776 liters). Electricity blackouts extending to 12-20 hours per day further worsens the situation by failing to pump available water, calling for solutions to enhance water and energy security. This study evaluates the feasibility of integrating Floating Photovoltaics (FPV) on the Umzingwane catchment dams (Umzingwane, Upper and lower Ncema, Insiza, Mtsabezi and Inyankun) to mitigate …

Who Owns The Wind: The Absence Of Community Wind Farms In California, Sky Berry-Weiss

Master's Projects and Capstones

Community ownership structures for wind farms have been around for decades, particularly in European countries, due to high socioeconomic benefits. Given these significant benefits, one might expect community wind to thrive in the United States—especially in a state like California, which prides itself on progressive climate policy and renewable energy leadership. Yet utility-scale community wind remains largely absent from research on California’s energy system, raising questions about its existence in the state. To pinpoint how many utility-scale community owned wind farms are in California, this study surveys every operational wind turbine in the state. After classifying each wind farm by …

Effectiveness Of Urban Composting And Waste Management In The San Francisco Bay Area, Elijah Ashiagbor

Master's Projects and Capstones

The increasing food waste epidemic contributes to environmental degradation through amplified GHG emissions, notably CH4, from MSW landfills. Addressing this challenge is essential for public health and environmental sustainability. This research reviews municipal composting initiatives within the San Francisco Bay Area, evaluating effectiveness, efficiency, and sustainability. Utilizing data from CalRecycle and local municipalities, this study analyzes different composting processes, regulatory compliance with California’s Senate Bill 1383, and factors affecting waste diversion rates. Key discoveries indicate that in-vessel composting shows better efficiency and compost quality compared to windrow methods, particularly suitable for urban counties with space limitations. However, participation rates in …

Analyzing Ballast Water Treatments, Invasive Species, And Pathogens, And A Decade-Long Analysis On The San Francisco And Baltimore Ports, Jasmin Ibarra-Cortes

Master's Projects and Capstones

Installation of advanced technologies to treat ballast water on ships is necessary to meet current ballast water management standards and reduce the secondary spread of invasive species during intracoastal voyages. This research includes a literature review on non-native aquatic species, particularly diapausing eggs, and available treatment methods for installation. A comparative analysis from 2014 - 2024 on bulker, tanker, and container vessels arriving coastwise to the ports of San Francisco and Baltimore was performed to evaluate treatment installation trends, traffic patterns, and the effectiveness of treatment(s) on targeting diapausing eggs. Use of ultraviolet (UV) radiation combined with filtration has increased …

Trade-Off Between Limonene & Geraniol-Based Reprocessable And Non-Reprocessable Epoxy Thermosets: Role Of Aliphatic Diamines In Polymer Networks Design, Priyankkumar Kanubhai Patel

Electronic Theses & Dissertations

The growing demand for sustainable materials, driven by environmental concerns and the rapid depletion of fossil fuels, has garnered significant attention in the fabrication of bio-based epoxy thermosets as renewable alternatives to petroleum-derived thermosetting polymers. The present study focuses on the synthesis and characterization of epoxy prepolymer resins derived from limonene and geraniol via a two-step process, followed by the fabrication of thermally cross-linked flexible epoxy thermoset films using various traditional aliphatic diamine curing agents, namely 1,2-ethylenediamine (EDA), 1,4-butylenediamine (BDA), and 1,6-hexamethylenediamine (HDA). Additionally, the incorporation of cystamine, a disulfide-containing diamine, enabled the formation of a covalent adaptable network through …

Enhancing Water Supply Resilience & Sustainability: Potential Solutions To Address Water Scarcity In Bogotá, Colombia, Sophia Alvarez Wong

Master's Projects and Capstones

Municipal water utilities are in urgent need of adapting to the intensifying impacts of climate change and population growth—key drivers of urban water scarcity worldwide. In rapidly expanding cities like Bogota, Colombia, these pressures have contributed to a severe water crisis driven by prolonged droughts, ecosystem degradation, increasing water demands, and overdependence on limited water sources. This study explores potential adaptation and management strategies that utilities can implement to sustainably strengthen supply system resilience and enhance water security, in the context of low- to middle-income regions. A series of comparative and case study analyses were conducted to assess the feasibility …

California Kelp Forests: An Analysis Of Macrocystis Pyrifera And Nereocystis Luetkeana Restoration After Decades Of Decline, Gabrielle K. Farrer

Master's Projects and Capstones

California’s kelp forests are some of the most biodiverse and productive ecosystems on the planet. Centuries of anthropogenic degradation via habitat destruction and climate change have culminated in decreased kelp forest habitat at an accelerated rate since at least the 1850s (Scarborough et al. 2022; Rogers-Bennett & Catton, 2019; Kumagai et al. 2024; Smith et al. 2023). This study synthesizes major threats, past and present, to California’s kelp forests, including the overharvesting of multiple species, pollution from coastal development, and climate change impacts. I also examine current management practices regarding kelp forests such as the use of marine protected areas …

A Roadmap For Greywater Reuse At The University Of San Francisco Hilltop Campus: A Financial, Regulatory, And Technical Feasibility Study, Apama'bo Anand Oszkar

Master's Projects and Capstones

Abstract

Water scarcity is increasing in California, so we need strategies to reduce potable water demand. Decentralized greywater systems offer promising solutions to this problem. This study provides a roadmap for successfully implementing greywater reuse at the University of San Francisco (USF) by addressing financial, technical, and regulatory considerations. By deploying a mixed-methods approach that combines qualitative expert interviews and quantitative water usage analysis, policy review, cost analysis, and case studies, this study established USF’s annual recycled water demand as 8 million gallons, with two primary uses: irrigation, which accounts for 67% of the demand, and toilet-urinal flushing, which represents …

Butte Priority Soils Operable Unit (Bpsou)2020 Consent Decree Appendix D Attachment C Sections 7 And 8 Discrepancies, Mike Mcanulty

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Re: Comment Letter For Butte Priority Soils Operable Unit (Bpsou) Principles For A Greener Cleanup Report (Dated December 23, 2024), Emma Rott

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Re: Comment Letter For Draft Final Bpsou Unreclaimed Site Anderson Shaft Remedial Action Work Plan (Rawp) (Dated June 14, 2024), Molly Roby

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Investigating The Microbial Communities In Freshwaters Of Northern Sweden, Maizy Wilcox

Undergraduate University Honors Capstones

Climate change is shifting the stability of sensitive ecosystems in the Arctic region due to global warming, with widespread impacts on permafrost regions, including the Stordalen Mire region of Sweden. Due to climate change, the Stordalen Mire is composed of thawing permafrost shifting into a wetland (V onk et al., 2015). As permafrost thaws, the landscape transforms due to changing water environmental conditions, causing lower pH changes and higher temperatures in the water, impacting the underlying soil chemistry and biology, vegetation, and microbial communities (Webb et al., 2022). The increased temperature can enhance methanogenic microbial growth by expanding the groundwater …

Natural Resource Enterprises - Income Diversification And Conservation Practices Implemented On Private Lands In The United States, Daryl Jones

Journal of Extension

Wildlife-related recreation is popular with Americans spending over $150 billion dollars annually. I have conducted educational workshops (>100 events) to train U.S. landowners in natural resource enterprises development offering recreational hunting, angling, and nature tourism excursions along with conservation management practices to enhance wildlife habitats on their lands. To measure impacts, I conducted a comprehensive mail survey study with participants since 2010. Findings revealed that landowners who initiated these enterprises earned annual incomes and implemented conservation practices on properties. More training for landowners is recommended to increase income diversification and conservation of wildlife habitats and stewardship on private lands.

Climate Change Impacts On Drinking Water Security: A Comparative Study In Australia’S Remote Central Australia And Torres Strait Islands, Nina Lansbury, Julia Bradford, Sandra J. Creamer, Geoffrey Evans

Journal of the Australian Indigenous HealthInfoNet

Aboriginal and Torres Strait Islander communities are well adapted to the many different environments in which they have lived for thousands of years. However, their environments and communities are highly vulnerable to impacts of anthropogenic climate change, including increasing threats to the security of drinking water supplies. Climate change is intensifying the significant social and economic disadvantage Australia’s Aboriginal and Torres Strait Islander communities face from poverty, poor housing, and poor health including high exposure to infectious and other diseases. Lack of sufficient safe, clean, drinking water could force Aboriginal and Torres Strait Islander people to leave their homelands, adding …

The Agrivoltaics Opportunity In California: Dual Use Of Agricultural Land To Support Energy Transition And Bolster Climate Resilience, Joy Michelle Cox

Master's Projects and Capstones

Agrivoltaics, which facilitates energy and food production on the same land, is an emerging technological approach that supports agricultural productivity while growing farm revenues through solar electricity sales. Agrivoltaics use in the United States is nascent, with only 2% of utility-scale solar projects integrating agricultural production. Based on estimated high- and low-end ranges in the scientific literature, I have calculated that California can use agrivoltaics to produce 20% of the additional 70 gigawatts of utility-scale solar required to meet the state’s 2045 zero-carbon electricity goal. This 20% target is ambitious and achievable, and the impacts across land use, greenhouse gas …

Creating A Shade Tree Commission For Shamokin, Skye Sunderhauf, Beth Williams, Marques Owens, Olivia Follansbee

Final Reports in ENST 411: Environmental Community Projects

Final Project for ENST411 Environmental Community Projects

Turtle Creek Tree Restoration Project, Rebecca Beneroff, Risa Kanefsky, Max Dicerbo, Pj Newhart, Amanda Mitchell

Final Reports in ENST 411: Environmental Community Projects

Over the course of this project our group members Rebecca, Max, PJ, Amanda, and Risa worked closely with Jim Knight and Brian Auman from Turtle Creek Park to help research, plan, and execute a tree transplanting event that would be efficiently implemented and environmentally sound. This work involved extensive preparatory work in the park including soil testing, bare leaf tree identification, tree and shrub species characterization, and recommendation. The entire process was rooted in the most up to date literature and scientific practices surrounding bare root tree nurseries, existing land management plans, invasive species and public park management, ecological succession, …

Planting Seeds, Changing Minds: A Narrative Analysis Of Environmental Children’S Books, Julianna Jovillar

UNLV Theses, Dissertations, Professional Papers, and Capstones

Children’s books are some of the earliest forms of entertainment and education a person will interact with in their lifetime. Simultaneously weaving a tale and teaching a lesson, children’s books, therefore, have the great potential to communicate important lessons and mindsets at young ages. Utilizing narrative theory (Fisher, 1984) and ecocriticism (Glotfelty, 1996), while also considering environmental ideologies and narrative components (Bloomfield, 2024), this study explores the functions of environmental children’s books and how they might communicate environmental messaging and encourage ecological thinking. Following a narrative analysis of 46 environmental children’s books, the results of this study indicate that there …

Specters Of Change: A Rhetorical And Qualitative Analysis Of Environmental Ghost Stories From Las Vegas Locals, Rachel J. Wuester

UNLV Theses, Dissertations, Professional Papers, and Capstones

This thesis explores “environmental ghost stories,” a term created to represent narratives that blend emotions and memories of ecological loss to make sense of environmental change. This project utilizes a mixed-methods approach that blends narrative theory, environmental rhetoric, and qualitative interviews to examine the narratives of chronic and acute changes experienced by long-term residents of Las Vegas, Nevada. Participants (N = 15) were required to have resided in the Las Vegas valley for a minimum of twenty years in order to have had the opportunity to witness both chronic and acute changes to their environment. Using a phronetic iterative approach …

Assessment Of The 3-30-300 Standard In New London, Connecticut: Gis Analysis And Systematic Literature Review On Urban Tree Cover, Natalie Michele Reilly

Honors Scholar Theses

Cecil Konijnendijk’s 3-30-300 standard allows cities to monitor their current urban forestry conditions and progress toward improvement. The standard is met if individuals can see three trees from their home, have 30% canopy cover in their neighborhood, and are within 300 meters of a green space. I conducted a systematic review of relevant literature and an assessment of whether New London, Connecticut meets the standard. My goal was to evaluate the benefits of urban forestry standards, the feasibility of implementation, and whether cities tested adhered. The 30-component of the standard was the most difficult part to meet due to a …

2025 Revised Draft Final Unreclaimed Sites Quality Assurance Project Plan (Qapp), Pioneer Technical Services, Inc.

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Dry And Wet Deposition Of Atmospheric Microplastics In Las Vegas, Nevada, Laine Adame

UNLV Theses, Dissertations, Professional Papers, and Capstones

Plastics have been one of the most widely used man-made materials since their inception, and production is expected to grow by five percent every year. Plastic waste has become a growing global environmental issue. Primary MPs are plastics that are created to be intentionally tiny for their specific functional purpose. Secondary microplastics (MPs) are byproducts of plastic waste occurring due to the breakdown of larger plastics resulting in the presence and accumulation of MPs in the environment. MPs are defined as tiny particles of plastic between 5 mm and 1 μm in size. MPs have been found in the deep …

Climate Change And Hydropower Development Impacts In The Lower Mekong Basin, Nudthawud Homtong

UNLV Theses, Dissertations, Professional Papers, and Capstones

The Mekong River Basin is vital to East and Southeast Asia, supporting over 60 million people and sustaining critical ecological systems. However, the basin faces dual threats from climate change and hydropower development, jeopardizing its ecological balance, hydrological patterns, and resource reliability. This research focuses on the Lower Mekong Basin (LMB), where aggressive hydropower expansion and climate variability have intensified concerns about sustainable water management. The study is divided into three interconnected parts. Part I examines spatial and temporal precipitation patterns in the Chi-Mun Basin (CMB) and Lower Mekong River (LMR) from 1950 to 2008, using linear regression and Mann-Kendall …

Detection And Quantification Of Total Airborne Fungi And Coccidioides Species In Environmental Samples, Theresa T. Roehr

UNLV Theses, Dissertations, Professional Papers, and Capstones

Fungal exposure can cause acute and chronic illnesses or exacerbate existing illnesses. Some fungi are opportunistic pathogens and can lead to serious systemic fungal infections. In 2020, more than 150 million cases of severe fungal infections were reported globally resulting in an estimated 1.7 million deaths. Coccidioidomycosis, or Valley fever, is classified as a serious fungal infection caused by the fungi Coccidioides immitis and C. posadasii. These particular fungi are prevalent in the soil of the Southwestern United States, including Las Vegas, Nevada. In 2024, there were a total of 269 cases of Valley fever reported in Nevada, and …

Detecting Burn Severity And Vegetation Recovery After Fire Using Dnbr And Dndvi Indices: Insight From The Bosco Difesa Grande, Gravina In Southern Italy, Somayeh Zahabnazouri, Patrick Belmont, Scott David, Peter E. Wigand, Mario Elia, Domenico Capolongo

Watershed Sciences Faculty Publications

Wildfires serve a paradoxical role in landscapes—supporting biodiversity and nutrient cycling while also threatening ecosystems and economies, especially as climate change intensifies their frequency and severity. This study investigates the impact of wildfires and vegetation recovery in the Bosco Difesa Grande forest in southern Italy, focusing on the 2017 and 2021 fire events. Using Google Earth Engine (GEE) accessed in January 2025, we applied remote sensing techniques to assess burn severity and post-fire regrowth. Sentinel-2 imagery was used to compute the Normalized Burn Ratio (NBR) and Normalized Difference Vegetation Index (NDVI); burn severity was derived from differenced NBR (dNBR), and …