Environmental studies

This thesis explores environmental justice in Peterborough/Nogojiwanong, Ontario, focusing on how marginalized communities—including Indigenous peoples, people of colour, and low-income groups—experience and respond to environmental harm. Using Participatory Action Research and Photovoice, 22 co-researchers shared their lived experiences shaped by colonialism, systemic racism, and other intersecting forms of oppression. The study reveals widespread environmental injustices, including unequal exposure to harm, exclusion from decision-making, and limited remediation. Participants highlighted how race, gender, class, and (dis)ability compound these injustices, while also framing environmental harm as deeply connected to housing instability, economic precarity, and mental health. Although participatory methods fostered community dialogue and empowerment, institutional barriers continue to hinder transformative change. The findings underscore the need for long-term, community-driven strategies that center lived experience and promote distributive, procedural, and restorative justice. This research demonstrates how participatory approaches can support marginalized voices in advocating for more equitable environmental policies and outcomes.

Author Keywords: Environmental justice, Marginalized communities, PAR, Peterborough, Photovoice

Environmental infrastructure transforms the surrounding physical and culturallandscapes. In Canada, it has long been an integral part of settler colonialism. It severs Indigenous ties to the land and furthers colonial goals. This thesis examines the complex history of the Trent-Severn Waterway (TSW) during the nineteenth and early twentieth centuries, when it drastically changed the region. Research using oral history, newspapers, and legal documents corrects a narrative that positions the TSW as a common good. The TSW is alleged to have served the people, but who benefitted? The experiences of riparian residents varied as Anishinaabe First Nations endured a multilayered form of violence, distinct from their settler counterparts. What was often a nuisance for settlers could be life-altering for Anishinaabeg. However, amidst these changes, residents demonstrated resilience. Communities actively shifted the TSW to tourism as they adapted to a transformed landscape.

Author Keywords: Canada, Colonial, Environment, Indigenous, Ontario, Waterway

Colonization has transformed the landscapes of the American Midwest and compromised the region's resources and ecologies. In response, governments, environmental scientists, and Indigenous nations have undertaken myriad efforts over the past century to restore Midwestern environments. Yet the appropriate goals and techniques for this work have been deeply contested. This thesis explores the scientific, political, and cultural meanings of ecological restoration in the region. Comparison of different forms of restoration reveals the contingency, malleability, and historical pitfalls of restoration knowledge and practices. By framing the pursuit as a problem of scientific, historical, or technical knowledge, practitioners have often neglected the political and cultural ramifications of restoration efforts. At the same time, restoration practices have influenced the intellectual, environmental, and political history of the Midwest in the twentieth century. The efforts of Midwestern scientists and public agencies have advanced wildlife and ecosystem conservation in the region, but have at times exacerbated environmental injustices and inequalities. More recent wild rice conservation efforts by Ojibwe governments demonstrate that, depending on how the framework has been constructed, ecological restoration has served as a tool for reclaiming Indigenous sovereignty as well as a vehicle for settler colonialism.

Author Keywords: American Midwest, conservation, ecological restoration, ecology, Indigenous history, settler colonialism

Microplastics are intricate plastic particles (<5 mm in length) with complex chemical mixtures that are pervasive globally. Nonetheless, our understanding of microplastic contamination in the Canadian Arctic is limited. Therefore, this thesis aimed to investigate the concentration and characteristics of microplastics in and surrounding the community of Iqaluit, Nunavut. Our findings suggest Iqaluit is a local source of microplastics in the Arctic based on their concentration in road dust (2.83 ± 3.72 µg/g). Microplastic concentrations were comparable to those in metropolitan areas and given their abundance in parking lots it is suggested that these are temporary reservoirs for microplastics and tire wear particles. Further, lakes predominately upwind of Iqaluit had a greater concentration of microplastics (134 ± 204 µg/L) than lakes downwind (30.8 ± 55.5 µg/L). These findings underscore the importance of assessing both local-scale and long-range sources when examining microplastic contamination in the Arctic.

Author Keywords: Atmospheric microplastics, Biomonitoring, Canadian Arctic, Fourier-Transform Infrared Spectroscopy (FTIR), Plastic pollution

This intercultural rediscovery of Indigenous cacao culture draws upon Environmental Studies, Intercultural Studies, Indigenous Studies, Anthropology and Agroecology. The methodological antecedent for this kind of symbolic food study of cacao is the work done by Gustavo Esteva and others on the civilizational importance of maize. Similarly, the rediscovery of the Indigenous Knowledge of cacao explores the profound meaningfulness of cacao to ancient Mesoamerican civilization, and how that ecological, agricultural, and health wisdom can regenerate modern agricultural paradigms, and ecogastronomy. Chapter 1 explores, meditates, and reflects upon 20 Indigenous Knowledge teachings of cacao guided and supported by a unique interpretation of the Popol Vuh, the Mayan oral epic and creation story, as well as 20 years of collaboration and field work experience in Mexico. The methodology in chapter 1 is rooted in a phenomenological approach to dwelling with and relating to IK in an unmediated and embodied manner. Experience, story, dream and an awareness of the challenges of looking at Oral culture teachings are combined with an intercultural analysis of the Popol Vuh and other supporting texts. The spiritual ecology of the cacao forest garden of Chapter 2, seeks to make the connection between the maize milpa and the cacao forest garden milpa and posits a unique transition theory. The transition theory seeks to operationalize these Indigenous Knowledge agricultural and crop traditions into a regenerative agricultural model. Based upon Indigenous Knowledge, this view of the cacao forest garden functionally regenerates soils, regenerates forests, and supports food sovereignty in a way that is rooted in community scale Indigenous cultural practices, techniques, and food traditions. The methodology for chapter 2 and chapter 3 of this thesis moves to an intercultural comparison and analysis of agro-ecological and spiritual ecological understandings of cacao, chocolate, and the forest garden. Chapter 3 seeks to move from the explicating and analyzing of the 'transition theory' and proposes four main practical initiatives that further strengthen and explore the regenerative spiritual ecology of cacao forest gardens. The Indigenous forest garden commons of the Americas can be a powerful, unique, and fecund contribution to the intercultural dialogue around cultural regeneration in the 21st century. The Indigenous forest garden makes contributions around intercultural dialogue and reconciliation as well as current understandings around regenerative agricultural models. The cacao forest garden moves beyond an either/or narrative that separates environmental regeneration from cultural regeneration, and instead contributes to an intercultural both/and more holistic approach to regeneration that is rooted in culture and supported by agriculture.

Author Keywords: cacao, chocolate, forest garden, indigenous kmowledge, maize, transition theory

Local environmental initiatives can create visible and essential changes and inspire greater environmental action. Municipal governments and local environmental non-governmental organizations (ENGOs) are important local actors, but their partnerships and relationships have not received much attention. This thesis examines what activities and relationships have been developed between municipal governments and ENGOs in the Peterborough region, what benefits they gain and what challenges they face during collaboration, and how these partnerships affect public perceptions of the organizations. I conducted 14 interviews with members of local ENGOs and municipalities and received 52 survey responses from residents. The findings indicate groups have unique relationships for planning, programming, and advocacy activities. Relationships were key and challenges included lack of time and prioritization, communication, and public buy-in. Partnerships provide an opportunity to share positive accomplishments and build reputation. This study sheds light on the complex relationships among local organizations and provides recommendations for improving partnerships.

Author Keywords: Community Engagement, Environmental Non-Governmental Organizations, Local Sustainability, Municipal Government, Partnerships, Relationships

Colonization has transformed the landscapes of the American Midwest and compromised the region's resources and ecologies. In response, governments, environmental scientists, and Indigenous nations have undertaken myriad efforts over the past century to restore Midwestern environments. Yet the appropriate goals and techniques for this work have been deeply contested. This thesis explores the scientific, political, and cultural meanings of ecological restoration in the region. Comparison of different forms of restoration reveals the contingency, malleability, and historical pitfalls of restoration knowledge and practices. By framing the pursuit as a problem of scientific, historical, or technical knowledge, practitioners have often neglected the political and cultural ramifications of restoration efforts. At the same time, restoration practices have influenced the intellectual, environmental, and political history of the Midwest in the twentieth century. The efforts of Midwestern scientists and public agencies have advanced wildlife and ecosystem conservation in the region, but have at times exacerbated environmental injustices and inequalities. More recent wild rice conservation efforts by Ojibwe governments demonstrate that, depending on how the framework has been constructed, ecological restoration has served as a tool for reclaiming Indigenous sovereignty as well as a vehicle for settler colonialism.

Author Keywords: American Midwest, conservation, ecological restoration, ecology, Indigenous history, settler colonialism

This dissertation is about Forests, their loss and the grieving that arises from their loss. The loss of ancient and old-growth forests by way of clearcutting and or anthropogenically driven disturbances, including climate change, presents the quandary of loss of both biological and cultural diversity. Following Umeek's/E. Richard Atleo's term, I suggest that "dis-ease" in the dominant relationship to forests in parts of the Western world significantly rests within inherited cultural and political pasts at play in the present, carried in much of the language and lifeways of modern Anglophone societies today. I do so by a critical topographical exploration of thematic patterns that go back to the Epic of Gilgamesh, the oldest written account of deforestation in the history of Western civilization. I offer at the center of my inquiry a collection of witness trees as North American case studies. Each tree is a witness object, a station from which I confront and explore social-ecological grief as it has accumulated over time from English colonization, with one focusing on Indigenous cultural reclamation and place-based ecological co-management. Lastly, I turn to a multispecies exploration of social-ecological grief, using bears in North America as a face for reflection and consider who and what more is lost when old forests are degraded and gone. By asking the place question—"what place is this?"—of forests, or the Forest Question, my dissertation is thus an exploration of the connection and responsibilities to other place-based human and other-than-human communities in a rapidly changing climate.

Author Keywords: critical topography, environmental grief, forests, multispecies, social-ecological relations, witness trees

Plastic pollution is a growing concern, owing to its durability, ubiquity, and potential health impacts. The overall objective of this study was to assess the abundance and distribution of microplastics within Lake Scugog catchment, Ontario. This was fulfilled through two tasks (i) the development of a microplastic particle budget for the lake catchment, and (ii) the determination of the dry deposition of atmospheric microplastics in Port Perry, Ontario. The total input of microplastics into Lake Scugog (atmospheric deposition and stream inflow) was 2491 x106 mp/day, while the output (lake outflow and sedimentation) was 1761 x106 mp/day, suggesting that 29% of inputs were retained in the lake. The dry deposition of microplastics in Port Perry was 1257 mp/m2/day, which was high when compared to bulk deposition (37 mp/m2/day) in the same area. By quantifying the major pathways of microplastics better management techniques can be implemented.

Author Keywords: Catchment, Dry Deposition, Microplastics, Ontario, Particle Budget, Plastic pollution