Environmental Health Commons^™

Evaluating Corporate Marine Plastic Pollution Reduction Pledges: Achieving Plastic Reductions Or Contributing To Greenwashing, Ansar Z. Mohammed

Master of Science in Environmental Sciences and Management Projects

This paper examines major corporations' commitments and performance in reducing virgin plastic production, aligning corporate initiatives with tangible outcomes. It draws on sustainability governance literature and analyzes plastic reduction strategies by industry leaders such as SC Johnson, PepsiCo, Coca-Cola, Borealis, Nestlé, and Unilever. By synthesizing corporate reports and scholarly literature, the research provides an understanding of corporate plastic reduction within the framework of Sustainable Development Goal 14 (SDG 14), which focuses on marine conservation. The study evaluates the alignment of corporate commitments with SDG 14, identifying genuine environmental stewardship and potential greenwashing. It employs three methodologies: transparency, accountability, and science-based …

Data For: "Polyethylene Polymer Type And Soil Properties Determine Impacts Of Microplastic Pollution On Arugula Growth", Noah P. Walsh, Ella Beaghen, Abigail Kane, Leilani M. Santodomingo, Daniel Watson, Christina S. Baer

First-Year Research Immersion (FRI) Scholarship

From the manuscript abstract:

While microplastics have become a novel pollutant of concern, few studies have directly compared different polymers’ effects on plants. We investigated the effects of high-density (HDPE) and low-density (LDPE) polyethylene on arugula growth. We hypothesized that polyethylene microplastics would inhibit growth and that LDPE would have a greater effect than HDPE due to its branched structure and lower density. We grew arugula (Eruca vesicaria) in plain soil or soil mixed with HDPE or LDPE microplastics. To determine if microplastic effects are dependent on soil quality, we used two kinds of fresh soil and reused one type …

Plaster Creek Stewards Curb-Cut Rain Garden Social Impacts Study, Eleanor Vander Ark, Laura Luchies

Watershed Reports

As one method of minimizing pollutants in Plaster Creek, Plaster Creek Stewards (PCS) has installed Curb-Cut Rain Gardens (CCRGs) in the downstream neighborhoods of the Plaster Creek Watershed. CCRGs sit in the parkway between the sidewalk and the street, are planted with native plants, and have a cut in the curb to allow the influx of rainwater from the street. These gardens divert polluted rainwater from the creek by catching the water closer to where it falls and allowing it to filter into the ground.

As part of a grant from the Michigan Department of Environment, Great Lakes, and Energy …

Boiling Behind Bars: Exploring The Hidden Toll Of Extreme Heat On Mental Health In Texas Prisons, Sandra K. Miller

Social Work Theses - Archive

The State of Texas supports the largest prison system in the US and held 132,859 people in 100 units scattered across the state as of December 2023. Approximately 70% of Texas prison beds are not air conditioned, despite the state’s reputation for dangerously hot, humid summers. The State has officially recorded temperatures inside Texas prison facilities as high as 120 degrees with heat index values of over 150. Although there is a growing body of research on the negative physiological and psychological consequences of extreme heat among the general public, little is known about the physical and emotional toll of …

Environmental Health And Impact Of Workload On Errors For Wildland Fire Personnel, Michael Bryan Held

Masters Theses

"This thesis offers an analysis of how environmental health and workload affect wildland fire dispatchers and firefighters, combining results from two studies. The first study, "Environmental Health of Wildland Firefighters: A Scoping Review," performs a scoping review of scientific literature that examines the unique environmental health challenges wildland firefighters face. The review points out the increased risks to safety, health, and well-being from more exposure to natural hazards, identifying key research gaps and priorities. It stresses the need to broaden the geographic and demographic scope of studies, improve analytical methods, and increase research funding and focus for wildland firefighters.

The …

Evaluating Superfund Effectiveness And Community Engagement: Smurfit-Stone Mill Case Study, Abigail M. Sherwood

Undergraduate Theses, Professional Papers, and Capstone Artifacts

The Smurfit-Stone Mill operated in Frenchtown, MT from 1957 until 2010, releasing toxic pollutants into the Clark Fork River and surrounding areas. Despite environmental protests since the 1960s, substantive action to remedy environmental damage did not occur until 2015. Stakeholders including local residents, Indigenous tribes, Missoula County, and environmental non-profits have advocated for comprehensive site characterization, a timely cleanup, and robust community engagement. While residents and visitors contend with elevated toxins in fish tissue, prompting a 100-mile fish consumption advisory near the Smurfit-Stone Mill, the Environmental Protection Agency is several years away from determining the scope of a reclamation. Community …

Evaluating Reactive Gliosis In The Brain Of Adult Zebrafish Following The Ingestion Of Nanopolystyrene., Hannah A. Kelehear

College of Graduate Studies: Theses & Dissertations

Polystyrene nanoplastics are one of the most pervasive environmental contaminants and have been shown to infiltrate multiple organ systems following ingestion. Studies in several animal models and humans have demonstrated that nanoplastics can cross the blood-brain barrier. Additionally, there is evidence that plastics will induce an inflammatory response in the brain involving reactive gliosis of microglia and astrocytes. This process has yet to be thoroughly investigated in the zebrafish model system in the context of micro-/nanoplastic ingestion. In the current study, we examined microglial and astrocytic phenotypes in the adult zebrafish telencephalon after consuming food contaminated with 44 nm polystyrene …

(Plant)Ing Traditional Roots: Exploring An Impact Of Environmental Shifts On Traditional Phytotherapy Practices In The Cusco Region Of Perú, Nicole Elizabeth Wilmot

Undergraduate Honors Theses

This thesis investigates the potential outcomes of environmental shifts on plant-based medical practices in the Cusco region of Peru. Located in the Andes mountain range, at a high elevation, the environment varies immensely, specifically in the various types of native plants in the region. Historically, using plants as natural forms of medicine or healthcare has been deeply rooted in many indigenous communities, traditions, and cultures globally. Environmentally, there have been potential changes and shifts in temperature, water, and soil that affect the nutrition and health of plants to maintain their beneficial properties. Due to various factors, adaptations or shifts to …

Braving The Elements: Loss Of Metals From Mardi Gras Beads Due To Handling And Weathering, Thomas O. Carmichael, Ruth H. Carmichael

Gulf and Caribbean Research

The largest Mardi Gras celebrations in the U.S. are found along the Gulf of Mexico coast. With increasing awareness of and concern for environmental and human health risks due to pollution from Mardi Gras celebrations, there is a need for studies to quantify potential harms. We conducted a 2—part study to determine whether use—related handling and weathering of common Mardi Gras beaded necklaces results in loss of potentially harmful metals to the environment at levels of ecological or human health concern. Our data indicate that weathering and use—related handling can cause metals to be shed from the metallic coating of …

Integrating Western Science And Indigenous Knowledge For Just Practices In Conservation, Cierra Lea Keith

Graduate Student Theses, Dissertations, & Professional Papers

No abstract provided.

Geochemistry Of Rare Earth Elements In Simulated Natural Waters: Experiments And Modelling Of Precipitation, Complexation, And Bioavailability., Samantha Zulian

Theses and Dissertations (Comprehensive)

Rare earth elements (REEs) are an important part of modern technology and used for many applications. Mining, agriculture, improper recycling and medical applications can increase the concentration of these elements in surface waters. Metals in the environment including REEs can be found naturally but understanding the implications increase concentrations from anthropogenic inputs is important. REE mobility, persistence and toxicity is imperative to risk assessment as Canada begins to mine REE. Ultimately, as with other metals, the impacts of REEs in the environment should be dependent on the specific physical and chemical forms of the elements. Fractionation provides a practical method …

Incorporating Effects-Based Approaches Into Environmental Impact Assessment To Improve Post-Development Monitoring, Carolyn J M Brown

Theses and Dissertations (Comprehensive)

Over the last 50 years, improvements in design of industrial facilities have significantly reduced environmental impacts. But impacts still occur and monitoring programs are the main mechanism to inform when modification/implementation of mitigation is needed. Informed decisions require adequate baseline (pre-development) data to predict impacts based on the development’s design and to understand when the post-development environment has changed. An adaptive monitoring plan provides an effective way to evaluate monitoring results and allow for proactive responses to environmental change before impacts become difficult or challenging to reverse. Unfortunately, baseline data gathered during an environmental impact assessment (EIA) is often inadequate …

Assessing Road Dust Impacts On Macroinvertebrates Community Structure In Canadian Arctic Lakes, Hong Yi Gao

Theses and Dissertations (Comprehensive)

In the Canadian Arctic, unpaved gravel roads are essential for regional accessibility but are also potential sources of road dust runoff. My study investigated the impacts of road dust from the Dempster and Inuvik-Tuktoyaktuk Highways on adjacent freshwater ecosystems, focusing on water quality parameters and macroinvertebrate communities. Using a stratified random sampling design, 18 lakes were studied across two regions (boreal forest and tundra) and three distance categories from the road (0-300 m, 300-600 m, and > 600 m). Contrary to my initial hypotheses, findings revealed no significant differences in water quality or invertebrate communities relative to distance from the road. …

Assessing Stormwater Management Pond Water Quality, Function, And The Potential Biotic Effects To Receiving Waters, Mitchell Elstone

Theses and Dissertations (Comprehensive)

The use of stormwater management ponds (SWMPs) has been increasing over the past five decades. However, an in-depth understanding of the daily performance of SWMPs and functionality during cold periods is limited. This is in part because mandated monitoring is relatively infrequent, and the assumption that SWMPs are inactive between storm events and during the winter. The goals of this research were to better understand daily stormwater (SW) characteristics, the performance of SWMPs based on current forms of evaluation and assess the potential for SWMP effluent to impact downstream biota. Influent and effluent samples from two SWMPs were collected daily …

Fostering Environmental Sustainability Through Early Childhood Education(Ece)., Tahira Jabeen, Fozia Parveen, Nasima Shakeel

Books

No abstract provided.

The Effects Of Length, Weight, Age, And Gender On Mercury Concentrations In Burbot In North-Central Minnesota Lakes, Liam Hanley

Journal of Earth and Life Science

Burbot Lota lota in north-central Minnesota lakes have the potential to reach large sizes and consume large volumes of prey. This caveat may make burbot susceptible to higher rates of biocontamination, bioaccumulation and biomagnification. The objective of this study was to determine how changes in age, length, gender, weight, and lake affect total mercury concentrations in burbot. In this experiment 28 burbot were angled from three lakes: Cass (n = 17), Winnibigoshish (n = 4), and Bad Medicine (n = 7). Then tissue samples were taken from each fish and were lyophilized and homogenized. Homogenized tissue samples were analyzed by …

Maximum Entropy Species Distribution Modeling For The Spring Ephemeral Herb Bloodroot (Sanguinaria Canadensis) In Eastern North America, Velan Manivannan

Williams Honors College, Honors Research Projects

The spring ephemeral plant Bloodroot (Sanguinaria canadensis) has a widespread native range in North America, spanning much of the eastern United States and Canada. While its current NatureServe conservation status is designated as ‘secure’ (NatureServe, 2023), its status as a spring ephemeral places it at a heightened risk for climate change-induced phenological mismatch with advancing forest canopy closure. Additionally, under continued anthropogenic climate change, Bloodroot may also experience range shifts or contractions as the edges of its present range warm past physiological thresholds. To determine the potential for range shifts and contractions under future warming, I generated a …

Emerging Chromatin Regulators In Response To Heavy Metal Exposure, Wesley Saintilnord

Theses and Dissertations--Molecular and Cellular Biochemistry

Environmental exposure to heavy metals poses significant threats to human health as they are associated with various developmental and chronic pathologies such as reproductive defects and cancers. Despite their profound risks, a comprehensive understanding of their disease-causing mechanisms is lacking. Most studies point to reactive oxygen species-induced DNA damage; however, their mutagenic potential is relatively weak suggesting the involvement of alternative mechanisms. One important, yet underexplored mechanism, is their ability to rewire the epigenome via DNA methylation and histone variant incorporation, leading to aberrant gene regulatory networks.

This study investigates the epigenetic mechanisms targeted by two ubiquitous heavy metals with …

Perfluorooctanesulfonic Acid Exposure Leads To Downregulation Of 3-Hydroxy-3-Methylglutaryl-Coa Synthase 2 Expression And Upregulation Of Markers Associated With Intestinal Carcinogenesis In Mouse Intestinal Tissues, Josiane Weber Tessmann, Pan Deng, Jerika Durham, Chang Li, Moumita Banerjee, Qingding Wang, Ryan A. Goettl, Daheng He, Chi Wang, Eun Y. Lee, B. Mark Evers, Bernhard Hennig, Yekaterina Y. Zaytseva

Markey Cancer Center Faculty Publications

Perfluorooctanesulfonic acid (PFOS) is a widely recognized environment pollutant known for its high bio- accumulation potential and a long elimination half-life. Several studies have shown that PFOS can alter multiple biological pathways and negatively affect human health. Considering the direct exposure to the gastrointestinal (GI) tract to environmental pollutants, PFOS can potentially disrupt intestinal homeostasis. However, there is limited knowledge about the effect of PFOS exposure on normal intestinal tissues, and its contribution to GI- associated diseases remains to be determined. In this study, we examined the effect of PFOS exposure on the gene expression profile of intestinal tissues of …

Interactions Between Multiple Stressors, Nanomaterials And A Pathogen, In Caenorhabditis Elegans, Jarad Cochran

Theses and Dissertations--Plant and Soil Sciences

Metal and metal oxide nanoparticles (NP), which have received interest for use in agriculture, show in vitro and in vivo toxicity at relatively low concentrations. Silver nanoparticles (Ag NP) and zinc oxide nanoparticles (ZnO NP) cause adverse effects in model soil organisms under environmentally relevant conditions. In most toxicity assessments of nanomaterials, model organisms are exposed to a single stressor. Though single stressor experiments are essential to understanding the fate and effects of released NP, in nature, organisms are affected by multiple stressors, including pathogens, which might exacerbate or mitigate negative effects of NP exposure. There is limited research on …