Digital Commons Network^™

Mycorrhizal Feedbacks Influence Global Forest Structure And Diversity, Camille S. Delavaux, Joseph A. Lamanna, Jonathan A. Myers, Richard P. Phillips

Biological Sciences Faculty Research and Publications

One mechanism proposed to explain high species diversity in tropical systems is strong negative conspecific density dependence (CDD), which reduces recruitment of juveniles in proximity to conspecific adult plants. Although evidence shows that plant-specific soil pathogens can drive negative CDD, trees also form key mutualisms with mycorrhizal fungi, which may counteract these effects. Across 43 large-scale forest plots worldwide, we tested whether ectomycorrhizal tree species exhibit weaker negative CDD than arbuscular mycorrhizal tree species. We further tested for conmycorrhizal density dependence (CMDD) to test for benefit from shared mutualists. We found that the strength of CDD varies systematically with mycorrhizal …

Distributed Spatial Data Sharing: A New Era In Sharing Spatial Data, Majid Hojati

Theses and Dissertations (Comprehensive)

The advancements in information and communications technology, including the widespread adoption of GPS-based sensors, improvements in computational data processing, and satellite imagery, have resulted in new data sources, stakeholders, and methods of producing, using, and sharing spatial data. Daily, vast amounts of data are produced by individuals interacting with digital content and through automated and semi-automated sensors deployed across the environment. A growing portion of this information contains geographic information directly or indirectly embedded within it. The widespread use of automated smart sensors and an increased variety of georeferenced media resulted in new individual data collectors. This raises a new …

Exploring The Effectiveness Of Ecological Momentary Assessment And Video At Eliciting The Impact Of Park Features On Human Health And Well-Being In A Protected Area Context, Katelyn O'Bright

Theses and Dissertations (Comprehensive)

It is increasingly recognized that contact with nature in parks and other forms of protected areas provides benefits to visitors’ physical, mental, social, spiritual, and intellectual health and well-being. However, the methods used to assess these outcomes, including the influence of different environmental features that lead to these benefits, is under-researched. To address this gap, this study used a mixed methods design to explore the effectiveness of using Ecological Momentary Assessment (EMA) and video to assess the impact of various park features on the self-perceived (subjective) health and well-being of visitors. Participants were prompted by a mobile application on their …

“Bright Spots” And Effectively Communicating The Ecological And Social Outcomes Of Protected And Conserved Areas In Canada, Jen Hoesen

Theses and Dissertations (Comprehensive)

Healthy and resilient protected and conserved areas are the foundation of biodiversity conservation, improve livelihoods, and drive sustainable development. Protected lands and seascapes radiate life sustaining ecosystem services and provide important places for nature connection, rejuvenation, and inspiration. Although escalating human pressures and climate change-related risks continue to place many protected and conserved areas under increasing threat, “conservation bright spots” have emerged as a key communications strategy to illustrate where and how biodiversity and the social benefits it provides is performing relatively well. Given the crucial need to educate the public about biodiversity-related issues and amplify solution-centric approaches to support …

A Machine Learning Approach To Classify Open Water And Ice Cover On Slave River Delta, Ida Moalemi

Theses and Dissertations (Comprehensive)

Seasonal temperature trend and ice phenology in Great Slave lake (GSL), are strongly influenced by warmer inflow from Slave river. The Slave river flows to GSL through Slave river delta (SRD), bringing a rise in temperature that triggers the ice break-up process of the lake. Slave river discharge is subject to multiple stressors including climate warming and upstream water activities, which in turn, directly affects the GSL break-up process. Consequently, monitoring the break-up process at SRD, where the river connects to the lake, serves as an indicator to better understand the cascading effects on GSL ice break-up. This research aims …

Water Stories: An Exploration Of Human-Water Connectedness In Ontario And The Implications For Water Sustainability, Tracey Ehl

Theses and Dissertations (Comprehensive)

Abstract

Water is the great connector. Water connects people, health, wellness, culture, spirituality, nature, and the economy. Clean, safe water (potable water) and sanitation were recognized over a decade ago by the United Nations General Assembly (UN) as a basic human right, and more recently the UN has also identified water sustainability and management as one of 17 sustainable development goals for all people in all countries. Water is inextricably connected to humans. Yet, in Ontario, Canada, a place with access to some of the largest freshwater reserves in the world, robust regulatory frameworks, involvement, some investment by all levels …

Contrasting Seasonal Cycling Of Arsenic In A Series Of Subarctic Shield Lakes With Different Morphometric Properties, Jeremy Harbinson

Theses and Dissertations (Comprehensive)

The subarctic shield near Yellowknife, Northwest Territories (NWT), is populated with thousands of small lakes (<1.5 km²) and several large lakes. Historic mining activities in the region have left a legacy of environmental impacts and widespread arsenic (As) contamination in both aquatic and terrestrial environments. In particular, several small subarctic lakes near Yellowknife have been previously documented to be contaminated with high levels of As. Subarctic lakes are characterized by seasonal ice-cover that can persist for more than half of the year, yet little is known about the under-ice spatial and seasonal dynamics of As cycling. The objective of …

Controls On Thermokarst Lake Water Balances In The Inuvik - Tuktoyaktuk Region, Evan J. Wilcox

Theses and Dissertations (Comprehensive)

There are tens of thousands of thermokarst lakes in the Inuvik-Tuktoyaktuk region, located in the northwest corner of the Northwest Territories, Canada. These lakes formed following the last glacial period in areas where ice-rich permafrost thawed and created depressions in the landscape. The Inuvik-Tuktoyaktuk region is one of the fastest warming regions in the world, leading to changing precipitation patterns, permafrost thaw and deciduous shrub expansion, all of which are affecting the water balance of thermokarst lakes. During the past several decades, lake expansion and contraction have been observed in response to fluctuations in precipitation. While these changes in lake …

“To Be Involved In A Meaningful Way”: Mobilizing Indigenous Knowledge In Environmental Monitoring Practices In Northern Ontario, Alanna Robbins

Theses and Dissertations (Comprehensive)

A steady shift in the environmental management literature encourages greater inclusion of traditional knowledge (TK) alongside Western science, much of it seeking to directly support Indigenous communities develop their own frameworks for environmental monitoring and stewardship. To date, little attention has been placed on research practices themselves as sites where interdisciplinary and intercultural work takes place to bridge between different knowledge systems and develop best practices for effective collaboration. Matawa Water Futures (MWF), the object of study for this thesis project, is a three-year water stewardship project involving Indigenous and non-Indigenous researchers, environmental managers, and community interns, working with the …

Utilizing Ground-Penetrating Radar To Estimate The Spatial Distribution Of Snow Depth Over Lake Ice In Canada’S Sub-Arctic, Alicia Pouw

Theses and Dissertations (Comprehensive)

With the expected rise in air temperature, it becomes important to understand how snow will respond in different climate scenarios. The presence of snow over lake ice largely influences the ice thickness, and as Canada’s Arctic and sub-arctic regions are experiencing warming at twice the global rate, concerns rise as changes in the snowpack will significantly impact northern communities that rely on lake ice as a means of transportation, source for drinking water, and feeding their families. The distribution of snow depth is highly sensitive to changes in climate over time, as such a slight increase in air temperature or …

Transformations Towards Just Urban Sustainabilities: A Community Psychology Approach To Analyzing And Fostering Urban Changes, Bianca C. Dreyer

Theses and Dissertations (Comprehensive)

Cities are uniquely positioned to drive social change towards more just and sustainable futures. However, while discourses of ‘transformations towards sustainability’ have gained prominence, their focus on integrating equity and justice and tackling the root causes of current unsustainabilities is lacking. This document outlines a research endeavor aimed at analyzing and fostering urban sustainable transformations from a community psychology perspective. This research is based on the assertion that without radical change based in equity and justice considerations, transformative efforts fail. First, a theory of just urban sustainable transformations (JUST) is suggested that draws on urban transformations and just sustainabilities scholarship. …

Wildlife Value Orientations And Recreation Conflict: A Focus On Hunters And Non-Hunters In Alberta, Canada, Yuvana Sequeira

Theses and Dissertations (Comprehensive)

Parks and other forms of protected areas are considered a vital tool in the effective conservation of biodiversity. These areas also provide important spaces for nature-based tourism and recreation (NBTR), where activities such as hiking, swimming, canoeing, and socializing with friends and family often occur. In some cases, hunting may also occur within a protected area, but there is little understanding of how such activities affect the experience and overall satisfaction of other recreationists (and vise-versa). While NBTR is a popular and growing industry, there is limited research in Canada about the values of tourists and recreationists and the …

“Anything From The Land Is Good”: Understanding How Community Gardening In Kakisa, Northwest Territories, Can Contribute To Indigenous Food Sovereignty, Michelle Malandra

Theses and Dissertations (Comprehensive)

Rates of food insecurity in Canada’s northern Indigenous communities are at levels that should constitute an emergency. Dominant explanations for these high rates of food insecurity often ignore the ongoing impacts of colonization and over-emphasize individual choices and nutritional guidelines developed by outsiders. The importance of holistic community health is ignored, along with the cultural and social values and practices that support community health and well-being, including traditional food systems. As the acute impact of climate change in the North threatens traditional food access, a shift toward an Indigenous food sovereignty approach in health and food policy is needed. With …

Comparison Of Permafrost Thaw-Related Changes To Hydrological Response And Land Cover In Subarctic Peatland-Dominated Landscapes, Mikhail Mack

Theses and Dissertations (Comprehensive)

The hydrological implications of discontinuous permafrost thaw in peatland-dominated basins are not well understood. While there is evidence suggesting that permafrost-thaw-driven land cover change increases annual runoff and the runoff ratio in the Taiga Plains of northwestern Canada, few studies have evaluated the impact on small to medium-sized basins (< 10⁵ km²) outside this ecoregion. Here, we assess runoff, runoff ratio, and precipitation trends for 34 peatland-dominated basins, of which 28 are in the discontinuous and sporadic permafrost zones and 6 in adjacent permafrost-free environments. We calculated annual and monthly trends between 1970 and 2016 using the Mann-Kendall …

Consumers’ Preferences And Willingness To Pay For Value-Added Dairy Products In Kentucky - Considering Price, Provenance, And Environmental Product Attributes, Favour E. Esene

Theses and Dissertations--Agricultural Economics

Many medium and smaller dairies are shifting to various kinds of value-added products that may expand in demand nationally aside from fluid milk. This study uses a latent class logit model to investigate the heterogeneity of consumer preferences and willingness to pay for dairy value-added products across four latent classes considering different local and environmental sustainability labels. The dairy products examined for this research are butter, cheese, yogurt, and ice cream. This research revealed that younger consumers, especially those that reside in rural areas, always pay attention to product attributes when they shop for dairy products, mostly the local state …

Lib Digital Commons Faculty Works, Kettering University

Assurance Argument Evidence Files

No abstract provided.

Development Of Novel Detection Methods For Food Safety Using State-Of-The-Art Technology Platforms, Prae Noppakuadrittidej

Chulalongkorn University Theses and Dissertations (Chula ETD)

Foodborne illness is a significant global public health concern, impacting both the economy and human health. These illnesses are caused by bacteria, viruses, parasites, toxins, and chemicals. This research developed two technology platforms for Bacillus cereus and tropane alkaloid compounds detections. First, traditional detection methods for B. cereus have limitations in long analysis time, and dependence on analysis and interpretation by skilled personnel. Therefore, this study introduces a robust detection method using peptide nucleic acids (PNAs) bearing with a prolyl-2-aminocyclopentanecarboxylic acid (ACPC) backbone as probes in a bead array method. PNAs with groEL, motB, and 16S rRNA sequences were covalently …

Piney Point Cascading Disaster And Environmental Conflict: An Explanatory Case Study, Ketti Davison

Department of Conflict Resolution Studies Theses and Dissertations

The purpose of this explanatory case study is to understand the sense that community members made of how and why environmental conflict manifested in the wake of the Piney Point cascading disaster. It found that intentional avoidance of local news caused community members to be unaware of the risks beforehand, of the responses in the aftermath, and of the threats that remain. The study leverages a unique opportunity to fill a gap in the research by examining a contemporary cascading disaster as it generated environmental conflict. This dissertation centers on the perceptions of directly affected community members in the Tampa …

An Analysis Of Water Quality At Orange County, California Beaches, Naomi Meurice

Pomona Senior Theses

Beaches in Southern California are highly recreated by residents and visitors, making beaches socially and economically important. Public health departments in coastal communities are in charge of measuring water quality and ensuring it is safe for users. Research in the past has indicated that beach water quality gets worse after storms, with bacteria levels jumping on the day of a storm and staying high for up to five days. Studies have shown these spikes in bacteria to be associated with storm runoff, with beaches closer to runoff discharge locations experiencing more impact. However, prior research has not considered the period …

Warehouses In The Inland Empire: Displacing Land And Life, Katherine Gelsey

Pomona Senior Theses

The Inland Empire in Southern California embodies unique spatial and social configurations as a consequence of how settler colonialism has manifested locally in the region since the Spanish Mission Period. This work uses GIS software to estimate patterns of land conversion for residential, agricultural, and warehouse land from 2012 to 2022. Preliminary analysis suggests that thousands of people have been displaced by warehouse expansion over the ten-year period. In the twenty-first century, the Southern California logistics industry continues processes of land dispossession and racialized labor exploitation through displacing agricultural and residential land, exposing disproportionately low-income Black and Latine communities living …

The Wh-Eye Of The Storm: How Zora Neale Hurston, Virginia Woolf, And Arif Anwar Fictionalize Extreme Weather In Their Works, Elena Vedovello

Pomona Senior Theses

In this thesis, I used Robin Wall Kimmerer’s and James D. Rice’s ideas of “ecological imagination” to analyze three twentieth and twenty-first century works that feature historical extreme weather events. American Harlem Renaissance writer Zora Neale Hurston introduces her fictional characters to the historical force of the 1928 Okeechobee Hurricane in her 1937 novel Their Eyes Were Watching God; British Modernist writer Virginia Woolf writes about the 1609 Great Frost in Orlando; and Bangladeshi author Arif Anwar sets his novel The Storm during and around the infamous Bhola Cyclone of 1970.

Although these authors and their novels stem …

Ecodrama And Sustainable Theatre: A Handbook For Creating Remarkable Change, Gigi Buddie

Pomona Senior Theses

The climate crisis is not new to us, nor are the art forms that have taken shape as vital components of the many activist movements that seek to save the planet. Yet, for the first time at Pomona College, a play about environmental devastation and our hand in it finally graced the stage of this progressive institution this past year. This mini handbook is a call-to-action (of sorts), one that stems from the idea that this should not be the last ecodrama performed at Pomona College. These chapters are structured and supported by both experience and research – formulated from …

¡Hay Comida En La Casa! - There Is Food At Home!, Gabriela Camacho

Pomona Senior Theses

Implemented in 2019, AB 626 created a new category in the California Retail Food Code known as a Microenterprise Home Kitchen Operation (MEHKO). MEHKOs are restaurants operated from private homes that allow the preparation and sale of meals that were previously illegal under state law. Californians were previously limited to cottage food laws which restrict home-cooked food production to non-perishable foods like baked goods. My thesis analyzes the progression of homemade food laws and how they impact home cooks. Additionally, many MEHKO owners and home cooks are immigrants, low-income individuals, or belong to BIPOC communities, groups that have traditionally faced …

Weaving Testimonio And Territory In La Comuna Ancestral Las Tunas, María J Durán González

Pomona Senior Theses

“Nosotras las mujeres ibamos al río a lavar la ropa pero sin con tanto químico y nada de esas cosas. Ahora, pues, cómo ve…” (Tomala, 2023).

The woman’s vignette of La Comuna Ancestral Las Tunas, or the Ancestral Commune of Las Tunas is a testimonio of the territory, yet women’s testimonios are registered separately from the dominant tales of territorial resistance of la Comuna. The analysis of testimonios arises from Chicanx/Latinx feminist studies that center the voices of Chicana/Latina women to form a collective narrative emerging from silences. I aim to interlace Latinx and Latin American geography principles with …

Konsumsi Energi, Pembangunan Sektor Keuangan, Dan Emisi Karbon Di Indonesia, Monica Ruth Karunia, Ahmad Komarulzaman, Ari Tjahjawandita

Jurnal Ekonomi dan Pembangunan Indonesia

This study investigates EKC hypothesis in Indonesia over the period of 1980–2019. Within the EKC framework, we examine the impact of GDP, energy consumption, and financial development on CO2 emissions using ARDL bound-test. The results show that the study variables are cointegrated, representing a long-run relationship. The EKC hypothesis is not validated as we found a U-shaped relationship. Given the turning point (IDR13,274,579) has been reached in 1987, a further increase in GDP would only be associated with an increase in CO2 emissions. While energy consumption increases CO2 emissions, financial development seems to improve environmental quality by lowering CO2 emissions.

Radioactive, Internal Colonialism: The Uranium Industry’S Historic And Current Impact On The Navajo Nation, Sophie Arens

Pitzer Senior Theses

The United States withheld information pertaining to the health problems associated with nuclear power, allowing uranium to be extracted, processed, and stored in the Southwest of the United States and more specifically the Navajo Nation. With this, many Diné people who had previously worked in the mines or lived within close vicinity to facilities developed various types of illnesses. This thesis argues that the development of nuclear energy in the United States is a form of radioactive, internal colonialism and that the current waste facility located in Carlsbad, New Mexico is furthering this history into the present day. This thesis …

Exploring The Diversity Of Microeukaryotic Communities In New England Tide Pools, Adri K. Grow, Robin S. Sleith, Taylor R. Sehein, Michaela Labare, Laura A. Katz

Biological Sciences: Faculty Publications

Though historically understudied, due in large part to most species being uncultivable, microbial eukaryotes (i.e. protists) are abundant and widespread across diverse habitats. Recent advances in molecular techniques, including metabarcoding, allow for the characterization of poorly known protist lineages. This study surveys the diversity of SAR (Stramenopila, Alveolata, and Rhizaria), a major eukaryotic clade that is estimated to represent about half of all eukaryotic diversity. SAR lineages use varied metabolic strategies like mixotrophy in dinoflagellates (Alveolata), parasitism in apicomplexans (Alveolata) and labyrinthulids (Stramenopila), and life cycle stages that include encystment and attachment (e.g. in ciliates, Alveolata) to survive in highly …

Restorative Justice And The Rights Of Nature: Using Indigenous Legal Traditions To Influence Cultural Change And Promote Environmental Protection, Anne Haluska

Mitchell Hamline Law Review

No abstract provided.

No Alternative: The Failure Of The Minnesota Environmental Policy Act To Consider Project Alternatives And Proposed Remedies, Kevin Swanberg

Mitchell Hamline Law Review

No abstract provided.

Eps 202-452: Society Techn & Environmnt - Honors, Michael Bonchonsky

Chemistry, Environmental and Forensic Science Syllabi

No abstract provided.