Physical Sciences and Mathematics Commons^™

Measuring Ecosystem Services From Soil Health. Vermont Payment For Ecosystem Services Technical Research Report #1, Alissa C. White, Heather M. Darby, Benjamin Timothy Dube, Bryony Sands, Joshua W. Faulkner, Meredith Albers, Maggie Payne

UVM Extension Faculty Publications

There are a multitude of approaches to evaluating soil health and the soil processes influenced by soil health. As the state of Vermont explores innovative programs that compensate farmers for soil health and associated ecosystem services, the selection of soil health indicators and quantification methods is a foundational first step that influences other aspects of program design. What is measured determines the ecosystem services that can be inferred, the accuracy of data that informs decisions, and programmatic transaction costs. Simply put, what is measured matters. The PES Working Group identified organic matter, bulk density, aggregate stability, greenhouse gas flux from …

A Multiscale Framework For Disentangling The Roles Of Evenness, Density, And Aggregation On Diversity Gradients, Daniel J. Mcglinn, Thore Engel, Shane A. Blowes, Nicholas J. Gotelli, Tiffany M. Knight, Brian J. Mcgill, Nathan J. Sanders, Jonathan M. Chase

College of Arts and Sciences Faculty Publications

Ecology published by Wiley Periodicals LLC on behalf of Ecological Society of America Disentangling the drivers of diversity gradients can be challenging. The Measurement of Biodiversity (MoB) framework decomposes scale-dependent changes in species diversity into three components of community structure: species abundance distribution (SAD), total community abundance, and within-species spatial aggregation. Here we extend MoB from categorical treatment comparisons to quantify variation along continuous geographic or environmental gradients. Our approach requires sites along a gradient, each consisting of georeferenced plots of abundance-based species composition data. We demonstrate our method using a case study of ants sampled along an elevational gradient …

Emulating Agricultural Disease Management: Comparing Risk Preferences Between Industry Professionals And Online Participants Using Experimental Gaming Simulations And Paired Lottery Choice Surveys, Eric M. Clark, Scott C. Merrill, Luke Trinity, Gabriela Bucini, Nicholas Cheney, Ollin Langle-Chimal, Trisha Shrum, Christopher Koliba, Asim Zia, Julia M. Smith

College of Agriculture and Life Sciences Faculty Publications

Mitigating the spread of disease is crucial for the well-being of agricultural production systems. Implementing biosecurity disease prevention measures can be expensive, so producers must balance the costs of biosecurity investments with the expected benefits of reducing the risk of infections. To investigate the risk associated with this decision making process, we developed an online experimental game that simulates biosecurity investment allocation of a pork production facility during an outbreak. Participants are presented with several scenarios that vary the visibility of the disease status and biosecurity protection implemented at neighboring facilities. Certain rounds allowed participants to spend resources to reduce …

Farm Benchmarking: The Application Of Business, Conservation And Labor Indicators, Mark Cannella, Sara Ziegler,, Qingbin Wang, Mary Peabody, Thomas Leahey, Heather M. Darby

USDA Agricultural Research Service (ARS) Center

Farm benchmarking programs will move Vermont’s food system towards important sustainability outcomes by establishing enhanced monitoring of priority indicators and facilitating the adoption of best practices. Farmers, researchers, policy agencies and development professionals agree there is a lack of regular and consistent data available to guide private and public initiatives. This paper identifies and contextualizes over forty priority indicators capable of measuring business performance, conservation, farm labor and community development.

Benchmarking methods need to be adapted to better represent the diversity of enterprises present in Vermont’s agricultural portfolio. The integration of University Extension objectives with food systems research priorities can …

Operationalizing Embeddedness For Sustainability In Local And Regional Food Systems, Joe Ament, Daniel Tobin, Scott Merrill, Caitlin Morgan, Cheryl Morse, Tung Liu, Amy Trubek

USDA Agricultural Research Service (ARS) Center

Agricultural systems are deeply embedded in social processes and the institutions that govern them. Measuring these processes and understanding the extent of that embeddedness is critical to crafting policy for sustainable agricultural systems. The bulk of measurement in sustainability research, however, focuses on economic and environmental indicators such as farm profitability and water quality. Since policy is most often aimed at what is measured, it tends to focus on issues like price, production, and market access. And while those are important, policies aimed at social issues such as community reciprocity are often outside the scope of policy design.

The gap …

The Farm-Community Nexus: Metrics For Social, Economic, And Environmental Sustainability Of Agritourism And Direct Farm Sales In Vermont, Lisa Chase, Gillian L. Galford, Jane Kolodinsky, Daniel Tobin, Eric Bishop Von Wettberg, Amy Kelsey, Susanna Baxley, Christopher Brittain, Josiah Taylor

USDA Agricultural Research Service (ARS) Center

Viable working landscapes, vibrant communities, and healthy ecosystems are the building blocks of sustainable food systems. Small and medium farms are connective tissue, creating a system that is greater than the sum of its parts by linking consumers to producers and promoting environmental stewardship. Our approach considers sustainability through connections between farms, their communities, and visitors within an agritourism framework, including on-farm experiences, direct sales of agricultural products, and farmer-consumer interactions at markets. The goal is to contribute to the understanding, operationalization, and integration of metrics built on the ideals that viable, sustainable, and resilient food systems must support social, …

Master's Project: The Green Burial Movement & Conservation Burial Grounds, Katherine B. Berdan

Rubenstein School Masters Project Publications

This Master’s project investigates the green burial movement and its relevance as a tool for land conservation organizations. This movement has the potential to change the standard cemetery landscape in the United States by informing consumers of alternative practices and materials that support natural environmental processes and sustainable land management practices. Until a decade ago, the green burial movement had largely taken place at the community and individual level. It is now an established and growing national movement with certifying organizations, standards and practices, and strategic goals. Opportunities exist within this movement to develop partnerships between the burial grounds and …

Master’S Project: Exploring And Supporting Social And Ecological Dimensions Of Pollinator Habitat Enhancement In Burlington, Vt, Victoria Hellwig

Rubenstein School Masters Project Publications

Urbanization and other manmade impacts threaten critical pollinator species like the bumblebee, whose populations are significantly affected by habitat loss. In response, activists in the City of Burlington are enhancing habitat to increase biodiversity through collaborative partnerships in urban green spaces. In an effort to explore and support pollinator habitat enhancement in Burlington, I examined social interactions involved in a group highly motivated to enhance habitat at Lakeview Cemetery and Champlain Elementary School, with an emphasis on power dynamics and place meanings of these sites. In conjunction with this exploration, I created landscape designs, planted a native habitat garden, and …

Literature Review And Comparative Analysis Of Existing Certification And Training Programs Applicable To Clean Water Project Operations And Maintenance, Marc Companion, Anna Hildebrand, Kristine Stepenuck

Lake Champlain Sea Grant Institute

Stormwater runoff that carries sediments and nutrients is a primary pollutant entering surface waters in the State of Vermont. Phosphorus pollution is driving cyanobacteria blooms in many of our lakes including Lake Champlain, Lake Carmi, and Lake Memphremagog, especially in the warmer months. Warmer weather patterns and an increased frequency of extreme storms are predicted with climate change. As such, there is critical need to take action on the land to minimize and treat stormwater runoff on-site.

The State adopted a Clean Water Act in 2015, which was swiftly followed by a Total Maximum Daily Load (TMDL) for Lakes Champlain …

Soaking Up Stormwater Through Education And Stewardship In The Lake Champlain Basin And Beyond, Lake Champlain Sea Grant, University Of Vermont Extension

Lake Champlain Sea Grant Institute

The health of Lake Champlain and other waterbodies in the Lake Champlain basin, which lies within portions of Vermont, New York and Quebec, are negatively impacted by nonpoint sources of pollution, including phosphorus, nitrogen, sediments, chloride, and bacteria. All of this pollution is carried to waterbodies in stormwater runoff. Thus, it is critical that everyone understand what stormwater is, and how to help clean it and reduce its volume before it enters local waterways.

Stormwater is water from rainfall and melting snow or ice that moves over the land, collecting pollutants as it makes its way to lakes, ponds, streams …

Investigating Biotic Interactions In Deep Time, Danielle Fraser, Laura C. Soul, Anikó B. Tóth, Meghan A. Balk, Jussi T. Eronen, Silvia Pineda-Munoz, Alexandria B. Shupinski, Amelia Villaseñor, W. Andrew Barr, Anna K. Behrensmeyer, Andrew Du, J. Tyler Faith, Nicholas J. Gotelli, Gary R. Graves, Advait M. Jukar, Cindy V. Looy, Joshua H. Miller, Richard Potts, S. Kathleen Lyons

College of Arts and Sciences Faculty Publications

Recent renewed interest in using fossil data to understand how biotic interactions have shaped the evolution of life is challenging the widely held assumption that long-term climate changes are the primary drivers of biodiversity change. New approaches go beyond traditional richness and co-occurrence studies to explicitly model biotic interactions using data on fossil and modern biodiversity. Important developments in three primary areas of research include analysis of (i) macroevolutionary rates, (ii) the impacts of and recovery from extinction events, and (iii) how humans (Homo sapiens) affected interactions among non-human species. We present multiple lines of evidence for an important and …

Body Mass-Related Changes In Mammal Community Assembly Patterns During The Late Quaternary Of North America, Silvia Pineda-Munoz, Advait M. Jukar, Anikó B. Tóth, Danielle Fraser, Andrew Du, W. Andrew Barr, Kathryn L. Amatangelo, Meghan A. Balk, Anna K. Behrensmeyer, Jessica Blois, Matt Davis, Jussi T. Eronen, Nicholas J. Gotelli, Cindy Looy, Joshua H. Miller, Alexandria B. Shupinski, Laura C. Soul, Amelia Villaseñor, Scott Wing, S. Kathleen Lyons

College of Arts and Sciences Faculty Publications

Ecography published by John Wiley & Sons Ltd on behalf of Nordic Society Oikos The late Quaternary of North America was marked by prominent ecological changes, including the end-Pleistocene megafaunal extinction, the spread of human settlements and the rise of agriculture. Here we examine the mechanistic reasons for temporal changes in mammal species association and body size during this time period. Building upon the co-occurrence results from Lyons et al. (2016) – wherein each species pair was classified as spatially aggregated, segregated or random – we examined body mass differences (BMD) between each species pair for each association type and …

A Cross-Cultural, Participatory Approach For Measuring And Cultivating Resilience On Small And Medium Farms, Hans Estrin, Walter Poleman, Aura M. Alonso-Rodríguez, Edgardo Gonzalez, Maria A. Juncos-Gautier, Chistopher Nytch, Ethan Thompson

USDA Agricultural Research Service (ARS) Center

One of the greatest leverage points in fostering the transition to sustainability can be found in the realm of food systems. The COVID-19 pandemic has brought into sharp focus the critical importance of small farm resilience to the well-being of communities around the world. We explored the role of small and medium farms in promoting sustainable social-agricultural systems, and investigated how the resilience of these farms can be both measured and amplified. W e integrated concepts from the fields of food systems sustainability and resilience, agroecology, and positive deviance to identify indicators that can help measure and track farm resilience. …

Amplifying Agroecology In Vermont: Principles And Processes To Foster Food Systems Sustainability, Martha Caswell, Rebecca Maden, Nils Mccune, V. Ernesto Mendez, Gabriela Bucini, Janica Anderzen, Victor Izzo, Stephanie E. Hurley, Rachelle K. Gould, Joshua W. Faulkner, Maria A. Juncos-Gautier

USDA Agricultural Research Service (ARS) Center

Agroecology is grounded in principles that support transitions toward economic, social and ecological sustainability and proposes that real and lasting change will require a significant transformation of our agri-food systems. Evidence for agroecology’s potential continues to grow, both through word of mouth by farmers and social movements, and through recent scientific assessments of its performance. With endorsements from the Food & Agriculture Organization of the United Nations (FAO), national governments in both the global north and south, and social movements, it is developing the web of ‘thick legitimacy’ required for even broader adoption (Montenegro de Wit & Iles, 2016). “...Agroecology …

Awareness Of Climate Change’S Impacts And Motivation To Adapt Are Not Enough To Drive Action: A Look Of Puerto Rican Farmers After Hurricane Maria, Luis Alexis Rodríguez-Cruz, Meredith T. Niles

College of Agriculture and Life Sciences Faculty Publications

Understanding how perceptions around motivation, capacity, and climate change’s impacts relate to the adoption of adaptation practices in light of experiences with extreme weather events is important in assessing farmers’ adaptive capacity. However, very little of this work has occurred in islands, which may have different vulnerabilities and capacities for adaptation. Data of surveyed farmers throughout Puerto Rico after Hurricane Maria (n = 405, 87% response rate) were used in a structural equation model to explore the extent to which their adoption of agricultural practices and management strategies was driven by perceptions of motivation, vulnerability, and capacity as a function …

An International Pilot Study Of Volunteer Stream Monitoring Groups: The Role Of Place Attachment In Volunteer Motivations, Rachel Pierson

Graduate College Dissertations and Theses

Engaging the public in scientific research through volunteer monitoring (a form of community science) has potential to expand knowledge of conditions and to improve collaborative decision-making. Many studies have sought to understand motivations for participation and potential resulting actions or behaviors that benefit the environment. Place-based connections have been demonstrated to lead people to adopt environmentally responsible behaviors. However, few studies have considered possible differences in motivations across countries or the role place attachment may play as a driver of initial or sustained participation.

The aim of this research was to determine the extent to which place attachment influences people’s …

The Feasibility Of Over-Summer Snow Storage At The Craftsbury Outdoor Center, Craftsbury Vt, Hannah Sarah Weiss

Graduate College Dissertations and Theses

Climate change increases the unpredictability of winter weather and threatens the future of nordic skiing. Ski centers at high elevation and high latitude have employed over-summer snow storage, a climate change adaptation strategy, to ensure a consistent start-date to their winter ski season. Over-summer snow storage involves making a large pile of snow during winter and storing the snow beneath protective layers, such as wood chips or foam panels, to impede melt throughout the summer and fall. When ready to open the ski season, the ski center uncovers the pile and spreads the snow to create trails. Though many nordic …

Enhancing Ecosystem Services And Climate Resilience In Agriculture: A Transdisciplinary Approach, Alissa White

Graduate College Dissertations and Theses

A complex of social, economic and environmental factors influences agricultural management in the northeastern US. Farmers often balance goals of farm viability, environmental stewardship, and resilience to climate change, while also under public pressure to enhance the provisioning of ecosystem services from their landscapes. Changes in farm management have been identified as cost-effective ways to address both local water quality issues, and global anthropogenic influences on greenhouse gas concentrations. Individual decision-making on the part of farmers that determines the fate of ecosystem service provisioning from agroecosystems, placing increasing importance on understanding how policy, outreach and research can support farmers’ capacity …

Phosphorus And Nitrogen Losses In Runoff From Fields With And Without Tile Drainage, Leanna Thalmann

Graduate College Dissertations and Theses

Nutrient losses in surface and subsurface drainage from crop fields have important water quality implications. The deterioration of water quality in segments of Lake Champlain has led to efforts to reduce phosphorus (P) and nitrogen (N) export from agricultural fields. This thesis presents data from two years of edge-of-field monitoring in two adjacent corn (Zea mays L.) silage fields in Keeseville, New York. One field has only surface drainage improvements with monitoring equipment, and the other has both surface and subsurface drainage modifications and monitoring equipment. The study took place from October 2018 to September 2020 and quantified flow and …

Estimating Floodplain Storage And Prioritizing Floodplain Reconnection In The Northern Lake Champlain Basin In Vermont, Stephanie Drago

Graduate College Dissertations and Theses

Floodplains play a major role in maintaining the health and sustainability of riverine systems, but human interventions have reduced the connectivity between stream channels and floodplains. Geomorphic assessments of streams and rivers in Vermont (USA) show they have been significantly altered within the past two centuries due to straightening, berming, and armoring channels to accommodate development, agriculture, roads, and rail lines. These alterations in river-floodplain connectivity have decreased floodplain functioning, specifically their capacity to store water during flood events. Currently, there is a lack of knowledge concerning the amount of floodwater, sediment, and nutrient retention provided by Vermont’s floodplains. This …

Coastal Resilience At The Nexus Of Food, Energy, And Water: An Interdisciplinary Perspective For Resilience Planning, Kristin Raub

Graduate College Dissertations and Theses

Global climate change poses increased threats to coastal communities. The resilience of coastal communities relies on the protection and continued availability of essential services such as food, energy, and water (FEW) systems. However, the intersection of FEW nexus research and coastal resilience planning has not been well explored. This dissertation seeks to further the goal of operationalizing resilience planning by examining the usefulness of resilience tools and toolkits that have been developed in recent years and exploring how the FEW nexus approach has been applied to coastal resilience planning in both academic and grey literature. The first chapter provides the …

Organic Amendments Alter Soil Hydrology And Belowground Microbiome Of Tomato (Solanum Lycopersicum), Taylor Readyhough

Graduate College Dissertations and Theses

Manure-derived organic amendments are a cost-effective tool that provide many potential benefits to plant and soil health. For example, amendment applications may increase soil fertility, improve soil structure, stimulate microbial activity, and suppress plant pathogens. Yet, responses to these applications may have unintended consequences. Inherent variability in the physical, chemical, and biological characteristics of these materials can result in inconsistent outcomes observed after their application. These differences are manifested in plant growth, soil physiochemical properties, and soil microbial community composition. Popular manure-derived organic amendments include dairy manure compost and poultry manure pellets. Dairy manure is an abundant resource on many …

Modeling Moose Habitat Use And Fitness Consequences Of Habitat Selection In Vermont, Usa, Joshua Alexander Blouin

Graduate College Dissertations and Theses

The moose (Alces alces) population has been declining across the northeastern US largely due to the impacts of winter ticks (Dermacentor albipictus). In epizootic years, an individual moose can host a staggering number of ticks (> 60,000), affecting both survival and reproduction. Habitat management may be used to improve the status of the moose population and health of individuals, but this requires knowledge of key habitat types used by moose and their spatial distribution. We investigated 1) habitat use by moose and 2) the fitness consequences of habitat selection during two critical winter tick life stages in northeastern Vermont. To …

Small-Scale Roll Coating As A Transitional Stage In The Scaling Of Organic Electronic Device Fabrication Techniques, Jared Benson

Graduate College Dissertations and Theses

Incredible achievements have been made in the field of organic electronics in small-scale laboratory settings. A topic of increasing importance is the realization of the potential for these technologies to be applied in an industrial setting. This is a deceptively challenging process, considering that many of the procedures used to attain exceptional results in a laboratory setting are not viable for translation to larger scale fabrication efforts. Moreover, upscaling fabrication is further complicated by the enormous barrier of entry due to the expensive equipment required to fabricate organic electronics at larger scale as well as the exponentially greater quantity of …

Spillover, Dilution, And Coinfection: Understanding The Spread Of Disease Within Managed And Native Bee Communities., Phillip A. Burnham

Graduate College Dissertations and Theses

Maintaining healthy pollinator communities is vital both for ensuring food securityand ecological diversity. However, managed honeybees and wild bee communities are under threat from an array of stressors including habitat loss, global change, pesticide use, poor beekeeping, and various pests and pathogens. Pathogens have been shown to be spilling over from managed bees into wild bee populations and are known to adversely affect colony function as well as increase mortality. Understanding transmission mechanisms related to general dynamics in this system will not only benefit pollinator health, but also gives us insight into important and understudied topics in disease ecology. In …

Quantifying Proverb Dynamics In Books, News Articles, And Tweets, Ethan Davis

Graduate College Dissertations and Theses

Proverbs are an essential component of language and culture, and though much attention has been paid to their history and currency, there has been comparatively little quantitative work on the frequency with which they are used, and the dynamics of their use over time. With wider availability of large corpora reflecting many diverse genres of documents, it is now possible to take a wider view of the importance of the proverb. Can a corpus linguistic approach to phraseology support existing histories, and what further insight can be gained from a quantitative approach? This study measures temporal changes in the relevance …

Loss Of Precision In Implementations Of The Toom-Cook Algorithm, Marcus Elia

Graduate College Dissertations and Theses

Historically, polynomial multiplication has required a quadratic number of operations. Several algorithms in the past century have improved upon this. In this work, we focus on the Toom-Cook algorithm. Devised by Toom in 1963, it is a family of algorithms parameterized by an integer, n. The algorithm multiplies two polynomials by recursively dividing them into smaller polynomials, multiplying many small polynomials, and interpolating to obtain the product. While it is no longer the asymptotically fastest method of multiplying, there is a range of intermediate degrees (typically less than 1000) where it performs the best.

Some applications, like quantum-resistant cryptosystems, require …

Investigating The Phase Of Green Leaf Volatile Derived Secondary Organic Aerosol Using An Electrical Low Pressure Impactor, Kevin Fischer

Graduate College Dissertations and Theses

Airborne particulate matter consists of small particles suspended in the air and is a ubiquitous component of the Earth’s atmosphere. These particles, known as aerosols, broadly affect both human health and the global climate. Secondary organic aerosol (SOA), a subset of atmospheric aerosol, are produced by the gas phase oxidation of volatile organic compounds (VOCs) originating from anthropogenic and biogenic sources. Of particular interest are a sub class of biogenic VOCs released by stressed plants, green leaf volatiles (GLVs), which are susceptible to oxidation via ozonolysis and form SOA. While important strides have been made in better understanding SOA, many …

Characterizing Mass Loss In Central Cuba Using Long-Term Sediment Generation Rates And Rock Dissolution Rates, Mae Kate Campbell

Graduate College Dissertations and Theses

Knowledge of denudation rates over geologic timescales provides important insight into the processes that govern soil formation, the regulation of Earth’s climate, and the evolution of landscapes. Accurately establishing long-term denudation rates is also key to understanding how human actions have altered the rates and patterns of erosion over time. While cosmogenic nuclides are often used to measure long-term denudation rates at the basin scale, these rates can be unrepresentative of total landscape denudation in areas where significant mass loss occurs through rock dissolution. In tropical landscapes, mass loss by solution often represents a significant portion of total landscape mass …

Perils And Pitfalls Of Symbolic Regression, Ryan Grindle

Graduate College Dissertations and Theses

The ever-growing accumulation of data makes automated distillation of understandable models from that data ever-more desirable. Deriving equations directly from data using symbolic regression, as performed by genetic programming, continues its appeal due to its algorithmic simplicity and lack of assumptions about equation form. However, few models besides a sequence-to-sequence approach to symbolic regression, introduced in 2020 that we call y2eq, have been shown capable of transfer learning: the ability to rapidly distill equations successfully on new data from a previously unseen domain, due to experience performing this distillation on other domains. In order to improve this model, it is …