Digital Commons Network^™

A Modelled Estimate Of Food Access Within Countries Shows That Inequality Within Countries Has Increased Despite Rising Equality Between Countries, Juan Diego Martinez, Navin Ramankutty, Zia Mehrabi, Tom W. Hertel

Department of Agricultural Economics Faculty Publications

Global food calorie supply per person is more than 2900 kcal per day on average, but we have failed to ensure equitable access to these calories. Yet how uneven food access is within countries has remained poorly understood, as has the progress made over the past five decades on closing the access gap. Using publicly available data, we developed a theoretically-grounded statistical model to estimate the cross-national relationship between average per capita expenditure and per capita food availability and used this to estimate within-country access to food for income deciles in 135 countries. We find that, from 1961 to 2013, …

Tracing The Digital Plant Humanities: Narratives Of Botanical Life And Human-Flora Relations, Paul Longley Arthur, John Charles Ryan

Research outputs 2022 to 2026

In this paper, we trace the emergence of what we term the digital plant humanities (DPH) as an evolution of burgeoning botanical interest among environmental and digital humanists. We argue that DPH coalesces the theoretical and methodological frameworks of the three research areas of plant humanities, environmental humanities, and digital humanities. After conceptualising DPH, we analyse three projects representative of the emergent field—the Native American Ethnobotany Database; Herbaria 3.0; and Microcosms: A Homage to Sacred Plants of America—while referring to a broader range of formative projects including the Plant Humanities Lab.

A Geospatial And Machine Learning Framework For Forecasting Ground Level Ozone Pollution, William J. Keenan

Electronic Theses and Dissertations

The major detrimental health effects of ground-level ozone (GLO) pollution make it imperative that both policy makers and ordinary citizens have access to high accuracy, high-resolution forecasts of their local area. Recently, advancements in computing power have made it possible to apply artificial intelligence (AI) techniques to a variety of big data modelling problems, including GLO forecasting and estimation. Of these AI methods, deep neural networks (DNN) have demonstrated the highest accuracy due to their ability extract non-linear relationships from high dimensional, noisy data inputs.

This research effort uses novel data sources, namely NOAA’s High Resolution Rapid Refresh (HRRR) meteorology …

Using Historic Glacial Data And Gis To Predict Mount Rainier National Park’S Glacial Future, Daniel Kincaid

Geography and the Environment: Graduate Student Capstones

Will Washington state have glaciers 100 years from now (year 2124)? Due to generally warmer weather glaciers are largely in retreat globally, including the glaciers in Washington state. In Washington state summer glacial meltwater plays a vital role in the survival of wildlife and is needed for human purposes that include recreation, power generation, drinking, agricultural, and industrial. This project looked at the most resilient glaciers in Washington state, the glaciers at Mount Rainier National Park. Historic measurements were used in an exponential growth calculation to project the amount in acres each glacier at Mount Rainer will advance or retreat …

Visualization Of Indiana And Northern Long-Eared Bats Using Spline Surfaces To Enable Targeted Land Management, Devin Escue

Geography and the Environment: Graduate Student Capstones

This project introduces a Bat Visualization Tool to help manage habitats for threatened bat species while considering broader ecosystem dynamics. It integrates data from acoustic bat surveys at the Corriell Nature Preserve in Iowa. The tool attaches spatial context to non-spatial survey data, weights species calls based on statistical p-values, and creates visual bat species distribution maps using spline surfaces. It also generates future survey locations based on these patterns. By using geospatial analysis and statistics, the tool identifies priority areas for conservation actions, focusing on factors like forest composition, roosting preferences, and land cover types that affect bat habitat …

Academic Success In First-Year Engineering Students At Private Higher Education Institutions In Egypt: Key Factors, Wassim Alexan

Theses and Dissertations

This research aimed to identify the key factors contributing to the success of first-year engineering students at private higher education institutions (HEIs) in Egypt. It specifically examined how various independent variables influence the success of these students, measured as the dependent variable. By analyzing these relationships, the study seeks to pinpoint key success factors (KSFs) for first year engineering students in this specific educational context. The research work employed a mixed methods approach, utilizing both quantitative and qualitative research methods. The quantitative analysis involved collecting data through a survey administered to a sample of first year engineering students at private …

Current And Future Environmental Suitability For Bats Hosting Potential Zoonotic Pathogens In Rural Kenya, Ruut Uusitalo, Reilly T. Jackson, Tamika J. Lunn, Essi M. Kohonen, Joseph G. Ogala, Paul W. Wabala, Tarja A. Sironen, Kristian M. Forbes

Biological Sciences Faculty Publications and Presentations

Synanthropic bats live in close proximity to humans and domestic animals, creating opportunities for potential pathogen spillover. We explored environmental correlates of occurrence for a widely distributed synanthropic African bat, Mops pumilus—a species associated with potential zoonotic viruses—and estimated current and future environmental suitability in the Taita Hills region and surrounding plains in Taita–Taveta County in southeast Kenya. To project future environmental suitability, we used four Coupled Model Intercomparison Project Phase 6 general circulation models that capture temperature and precipitation changes for East Africa. The models were parameterized with empirical capture data of M. pumilus collected …

Assessing The Effects Of Climate Change On Vulnerability To Poverty: The Case Of Heat Waves And Construction Workers In Egypt, Rachad Bani Samari

Theses and Dissertations

“Doomsday, humanity’s extinction, the end of days”. Apocalyptic adjectives abound to highlight the danger looming over the planet, as the earth is warming up due to global warming and climate change. The picture painted over the canvas has consistently projected a gloomy image of low-income countries and of the poor. As the earth is gently boiling with heat, low-income groups in the Global South are predicted to be most affected. However, most of such warnings and studies focused on sectors directly dependent on suitable weather conditions such as agriculture, and sea tourism. While the climatic phenomena of heat waves may …

Wasted Space: Using Parking Lots & Vacant Land To Improve Neighborhood Completeness, Ryan Martyn

Hatfield Graduate Journal of Public Affairs

This study conducts a spatial analysis of Portland, Oregon, focusing on leveraging underutilized areas like parking lots and vacant land—termed "wasted space"—to improve the city's completeness. Central to this investigation is the concept of a "complete neighborhood," characterized by access to daily necessities within convenient active transportation trip. This comprehensive idea encompasses walkability, equitable access to services, and sustainability.

This paper aims to redefine the concept of a complete neighborhood with precision and delve into its implications. The research looks at five regional, town, and neighborhood centers as defined by the city of Portland. These centers act as pivotal hubs …

Water Quality Assessment, Eutrophication, And Pollution Index In Lake Edku (Nile Delta Of Egypt), Mohamed A. Okbah, Mahmoud S. Ibrahim, Tarek O. Said, Mohammed E.M. Nassar, Maie I. El-Gammal

Blue Economy

Lake Edku is one of the most important lakes in the northern Nile Delta of Egypt. Studying the physicochemical characteristics and nutrient salts is essential for assessing water quality. pH recorded values fell within internationally permitted limits; the temperature was suitable for the growth of fish and living organisms. Electrical conductivity indicates a source of fresh water; salinity indicates that the lake water is brackish; Total Dissolved Solids (TDS) refers to most of the fresh water in the lake. Solid particulate matter occurred within the permissible limits according to WHO, and DO, and some results exceeded the permissible limit. However, …

Strength Evaluation Of Corn And Rice Husk Ash As Partial Cement Replacement In Foam Concrete, Leila Viktoria M. Esguerra, Shereen Danielle L. Haduca, Chrisha Anne C. Gaw, Kate G. Reboredo, Richard M. De Jesus

DLSU Senior High School Research Congress

The construction industry is acknowledged as a crucial catalyst for the development of all countries. However, it also significantly contributes to waste generation, environmental pollution, and global carbon emissions (Menegaki and Damigos, 2018; Zhang & Wang, 2023). As the use of fibers as a partial reinforcement in concrete is considered to enhance the ductility, tensile strength, compressive strength, and durability of the concrete mixture, the purpose of this study is to analyze the effects of using Corn Husk Ash (CHA) and Rice Husk Ash (RHA) as partial cement replacement in foam concrete (FC), examining the compressive and tensile strength, water …

The Chanterelle: The Magazine Of Environmental Studies At Cal Poly Humboldt, 2023-2024

The Chanterelle

The Chanterelle showcases the written work of Environmental Studies majors at Cal Poly Humboldt. Each contributing author enrolled in “ENST 395W: Research & Analysis for Environmental Studies” during the 2023-2024 academic year. While each student chose their own topic, they were prompted to write for a public audience. Specifically, they were encouraged to write for a friend, co-worker, roommate, sibling, or any other family member. Our intended audience in this magazine is thus public. We hope you enjoy this collective project. It is the outcome of course readings, research, and peer edits.

Planned Expansion Of Transportation Infrastructure In Brazil Has Implications For The Pattern Of Agricultural Production And Carbon Emissions, Zhan Wang, Geraldo B. Martha Jr., Jing Liu, Cicero Z. Lima, Thomas W. Hertel

Department of Agricultural Economics Faculty Publications

High transportation costs have been a barrier to the expansion of agriculture in the interior of Brazil. To reduce transportation costs, Brazil launched the National Logistics Plan, aiming to expand its railway network by up to 91 % by 2035. Such a large-scale infrastructure investment raises concerns about its economic and environmental consequences. By combining geospatial estimation of transportation cost with a grid-resolving, multi-scale economic model that bridges fine-scale crop production with its trade and demand from national and global perspectives, we explore impacts of transportation infrastructure expansion on agricultural production, land use changes, and carbon emissions both locally and …

Managing The Risks Against Carbon Neutralization For Green Maritime Transport, Melisa Ozbiltekin-Pala, Yigit Kazancoglu, Stavros Karamperidis, Mangey Ram

Plymouth Business School

Maritime transport plays a vital role in global trade. With low transport costs and high service reliability, approximately 80% of products are transported by sea. The international nature of maritime transport supports globalized production and consumption patterns. As a result, maritime transport is uniquely influenced by the convergence of environmental, geopolitical, and social factors. One of the environmental factors linked to maritime transport is emissions. Although many steps have been taken to reduce emissions within the scope of carbon neutrality by implementing new technologies and policies, the volume of emissions produced in maritime transport is still relatively high and threatens …

Natural Gas Or National Gas–Would A Statewide Natural Gas Ban In New Development Violate The Commerce Clause?, Madison D. Montague

San Diego Journal of Climate & Energy Law

This Article analyzes: (1) the contours of a natural gas installation ban, how municipalities have incorporated these bans, and how the state government may pass a statewide ban; (2) the likelihood that these bans would place a substantial burden on interstate commerce; (3) who, if anyone, would have standing to sue to end these bans; and (4) whether anyone could prevail in an action against a ban on new gas development.

An Economic Remodel: The Genesis Of Modern Corporate Sustainability, Caitlin R. Doak

Environmental Studies Senior Theses

My thesis aims to understand and analyze what is catalyzing the advancement of sustainability in corporate agendas. After my internship at Deloitte and four years of Dartmouth undergrad, I recognized some important themes emerging in the sustainability landscape. Sustainability is at the forefront of policy and stakeholder engagement right now. Shareholders, consumers, regulators, policy makers, are all putting pressure on CSuite executives to redefine materiality and increase transparency in order to properly understand sustainability-related risks and opportunities within companies. Climate and nature-related disclosures are becoming just as important as financial disclosures because companies are being evaluated holistically, and a company’s …

“Salmon Don’T Have Time For Us To Fix The Climate”: The Politics Of Climate Change And Dam Breaching On The Lower Snake River, Zanna Stutz

Geography Undergraduate Senior Theses

This thesis examines the politics of climate change and dam breach on the Lower Snake River. Located in Southeastern Washington within the Columbia River Basin, the four Lower Snake River dams (LSRD) have long been a source of political and legal controversy. While dam proponents advocate for services that they provide, which includes hydropower, navigation, and irrigation, others contend that their environmental impacts, particularly on salmon and steelhead, make them legally, environmentally, and morally irresponsible. Within this space, I specifically investigate how climate change has influenced the environmental politics and conflicts that surrounds dam breaching, further exploring how competing values …

Lawrence University One Hundred Seventy-Fifth Commencement, Sunday, June 9, 2024, Lawrence University

Commencement Programs

No abstract provided.

Fiscal Incentives For Green Growth: A Mixed-Methods Study Of The State Of Agroforestry And Tree Cover In India, Spriha Pandey

Environmental Studies Senior Theses

Agroforestry is a crucial strategy for diversifying farmer livelihoods and achieving India's climate goals, but its adoption has been hindered by institutional and fiscal obstacles. This mixed-methods study investigates the impact of national government schemes on tree cover increase and expert perceptions of incentives and barriers to agroforestry adoption. Our analysis of national schemes from 2013-2017 reveals that effective fiscal mechanisms and policy cohesion are critical drivers of agroforestry growth. Specifically, we find that increased funding for the Rural Employment Guarantee Scheme (MGNREGS) is associated with significant increases in tree cover area while funding for the Horticultural Scheme (NHM) is …

The Impact Of Maine’S Municipal Shellfish Management On Clam Harvester Motivation To Participate In Resource Conservation, Rachel Lohr Freer

Environmental Studies Senior Theses

This study investigates how the resource management strategies implemented by Maine’s different Municipal Shellfish Conservation Committees influences the motivation held by shellfish harvesters’ to participate in resource conservation activities. As soft shell clam landings are declining across Maine due to increasing predation and climate-related stress, there seems to be a disconnect in harvesters’ willingness to support the conservation activities that Shellfish Conservation Committees make available to them. In efforts to improve participation, town leadership in select regions have started to mandate the completion of annual conservation hours requirements. The diversity of policy approaches enacted by towns provides the unique opportunity …

The Dartmouth Land Ethic: Synthesizing Environmental Ethical Beliefs In Hanover And Beyond, Conor M. Roemer

Environmental Studies Senior Theses

In this thesis, I seek to explore the nature of an environmental ethical paradigm at Dartmouth. In order to do so, I have chosen to begin with an examination of Aldo Leopold’s Land Ethic. This watershed essay has inspired many environmental ethical inquiries in the last eighty years. Leopold’s Land Ethic urged human beings to view the environment beyond what might be extracted for anthropogenic use and to see the land as a summation of everything that lies within it: not just the plants and animals, but the mountains, rocks, rivers, and soil as well. In turn, scores of philosophers …

Conserving The Public Lands: Policy And Spatial Analysis Of A Bureau Of Land Management Conservation Leasing Mechanism, Isaiah M. Menning

Environmental Studies Senior Theses

The Bureau of Land Management (BLM) is the largest land administrator in the United States, managing about 10% of U.S. lands, primarily in the Western states. The BLM manages under a multiple-use framework, issuing commercial authorizations for grazing, mining, oil and gas, and wind and solar on public lands, while also managing for ecosystem health. In April 2024, the agency finalized a rule that would create a conservation leasing mechanism to allow private, state, and tribal parties to lease BLM lands for restoration and mitigation purposes, which I investigate here. First, I find that while the conservation leasing mechanism does …

Land-Use Governance And Indigenous Engagement In Arctic Alaska And Norway: Successes, Current Gaps, And Paths Forward, Ningning Sun

Environmental Studies Senior Theses

This study aims to analyze the land use governance structures and the role of Indigenous engagement in Alaska and Norway using a comparative approach, with special focus on successful practices, current gaps, and paths forward to achieve equitable governance. Extractive land uses, such as oil and gas extraction and the construction of wind farms, have mixed impacts on Indigenous communities and lead to social and legal issues such as land use conflict and environmental injustice. Previous research has studied land use governance in Arctic countries with regard to Indigenous Peoples, yet there is a lack of literature that spans Alaska …

Carbon Pricing In Action: Evaluating The Regional Greenhouse Gas Initiative, Evelyn M. Hatem

Environmental Studies Senior Theses

The Regional Greenhouse Gas Initiative (RGGI) is one of the longest-standing emissions trading schemes for carbon dioxide in the United States. “Cap-and-trade” describes an emissions trading scheme where emissions are capped at a specific level, allowances are allocated beneath that cap, and emitters can trade allowances. In RGGI, the cap lowers over time, and the allowances are distributed via a quarterly auction. While RGGI includes 10 member states across the Northeast United States, there is risk of carbon leakage whereby the carbon price signal in RGGI states reduces carbon emissions in those states, but there is increased generation in neighboring …

The Fight For Rice: Understanding How Monte Cristi Will Respond To Dr-Cafta And Climate Change, Scarlette G. Flores

Environmental Studies Senior Theses

The Dominican Republic and Central American Free Trade Agreement, or DR-CAFTA, was signed on March 1, 2007 by the United States, the Dominican Republic and six other countries in Central America. The United States set specific tariff schedules to be phased in after twenty years for certain crops, one of which is rice. Rice is one of the most important crops in the Dominican Republic and produced in the northwestern province of Monte Cristi. This area is affected by climate change due to droughts and water shortages. In my research, I investigate how rice farmers and agrochemical companies, two important …

The Influence Of Sediment-Supply On River Recovery From Reach To Watershed-Scales, Jordan Fields

Dartmouth College Ph.D Dissertations

Alluvial channels are always amidst cycles of disturbance and response, continually arcing towards, or back to, a dynamic equilibrium where the channel is subtly adjusted so that it is just able to transport the sediment load supplied from reaches above. As the landscape, and now the climate, have been altered by human activity, channels have been subjected to a changing balance of external forcings. Increasingly large and frequent floods, dam construction/removal, land use change, artisanal gold and sand mining all have drastically perturbed river channels’ delicate adjustment – how will they respond? Here, I consider the question from the grain …

Commercial Property Vacancies In American Cities, Emily Dinh

University Honors Theses

This paper examines the alarming impacts of the vacancy phenomenon on commercial properties across American during and after the COVID-19 pandemic. The increase in remote work encourages people to work from home more frequently. This does not only lessen employees' foot traffic to offices, but also disconnects the engagement of consumers and visitors to public areas, such as malls, stores, and other amenities. Many commercial properties have closed, shrunk their operating spaces, or reallocated for safety and security reasons. Reduction in occupancy rate among mentioned properties influences negatively on business owners, their associated partners, residents of the impacted areas, and …

Using Sustainable Technique To Recycle Waste Paper In Academic Institutions, Mustafa M. Mansour

Al-Bahir

It has been clearly demonstrated that it would be feasible to consider recycling paper in an academic institution. This can be achieved through combining specific waste paper baskets, a pulping machine and power supplied by a renewable energy source, with an already established local paper making company. The paper making company would be able to gain a subsidy from the government which pays them to actually recycle paper, to counteract the cost of the pulped paper which is 30% more expensive than raw wood pulp. The academic institution would save money on waste disposal and decrease its carbon footprint by …

Black Spiny-Tailed Iguana (Ctenosaura Similis) Use Of Gopher Tortoise (Gopherus Polyphemus) Burrows In Buckingham, Florida, Josie Rivero, Andrew M. Durso

Florida Field Naturalist

No abstract provided.

American Banding Directory Ii L-Z, Kenneth W. Prescott

Eastern Bird Banding Association News

No abstract provided.