Environmental Sciences Commons^™

The Ecological Genomic Basis Of Salinity Adaptation In Tunisian Medicago Truncatula, Maren L. Friesen, Eric J.B. Von Wettberg, Mounawer Badri, Ken S. Moriuchi, Fathi Barhoumi, Peter L. Chang, Sonia Cuellar-Ortiz, Matilde A. Cordeiro, Wendy T. Vu, Soumaya Arraouadi, Naceur Djébali, Kais Zribi, Yazid Badri, Stephanie S. Porter, Mohammed Elarbi Aouani, Douglas R. Cook, Sharon Y. Strauss, Sergey V. Nuzhdin

College of Agriculture and Life Sciences Faculty Publications

Background: As our world becomes warmer, agriculture is increasingly impacted by rising soil salinity and understanding plant adaptation to salt stress can help enable effective crop breeding. Salt tolerance is a complex plant phenotype and we know little about the pathways utilized by naturally tolerant plants. Legumes are important species in agricultural and natural ecosystems, since they engage in symbiotic nitrogen-fixation, but are especially vulnerable to salinity stress. Results: Our studies of the model legume Medicago truncatula in field and greenhouse settings demonstrate that Tunisian populations are locally adapted to saline soils at the metapopulation level and that saline origin …

Climate-Smart Agriculture Global Research Agenda: Scientific Basis For Action, Kerri L. Steenwerth, Amanda K. Hodson, Arnold J. Bloom, Michael R. Carter, Andrea Cattaneo, Colin J. Chartres, Jerry L. Hatfield, Kevin Henry, Jan W. Hopmans, William R. Horwath, Bryan M. Jenkins, Ermias Kebreab, Rik Leemans, Leslie Lipper, Mark N. Lubell, Siwa Msangi, Ravi Prabhu, Matthew P. Reynolds, Samuel Sandoval Solis, William M. Sischo, Michael Springborn, Pablo Tittonell, Stephen M. Wheeler, Sonja J. Vermeulen, Eva K. Wollenberg, Lovell S. Jarvis, Louise E. Jackson

Rubenstein School of Environment and Natural Resources Faculty Publications

Background: Climate-smart agriculture (CSA) addresses the challenge of meeting the growing demand for food, fibre and fuel, despite the changing climate and fewer opportunities for agricultural expansion on additional lands. CSA focuses on contributing to economic development, poverty reduction and food security; maintaining and enhancing the productivity and resilience of natural and agricultural ecosystem functions, thus building natural capital; and reducing trade-offs involved in meeting these goals. Current gaps in knowledge, work within CSA, and agendas for interdisciplinary research and science-based actions identified at the 2013 Global Science Conference on Climate-Smart Agriculture (Davis, CA, USA) are described here within three …

Exploring Germplasm Diversity To Understand The Domestication Process In Cicer Spp. Using Snp And Dart Markers, Manish Roorkiwal, Eric J. Von Wettberg, Hari D. Upadhyaya, Emily Warschefsky, Abhishek Rathore, Rajeev K. Varshney

College of Agriculture and Life Sciences Faculty Publications

To estimate genetic diversity within and between 10 interfertile Cicer species (94 genotypes) from the primary, secondary and tertiary gene pool, we analysed 5,257 DArT markers and 651 KASPar SNP markers. Based on successful allele calling in the tertiary gene pool, 2,763 DArT and 624 SNP markers that are polymorphic between genotypes from the gene pools were analyzed further. STRUCTURE analyses were consistent with 3 cultivated populations, representing kabuli, desi and pea-shaped seed types, with substantial admixture among these groups, while two wild populations were observed using DArT markers. AMOVA was used to partition variance among hierarchical sets of landraces …

The Energy Basis Of Food Security, Eric Garza

Food Systems Summit 2014

Food security includes elements of food availability, access and use. In the complex system that is our global food system, many variables influence an individual’s ability to achieve food security, but given that many people access food through economic markets food prices have come to be a vital component of food security. Food prices are influenced by many factors, but among these are fuel prices. For the last decade trends in food prices have tracked those of fuel prices consistently, and just as fuel prices have generally increased since 2005 food prices have done the same. Rising and increasingly volatile …

New Perspectives In Ecosystem Services Science As Instruments To Understand Environmental Securities, Ferdinando Villa, Brian Voigt, Jon D. Erickson

Rubenstein School of Environment and Natural Resources Faculty Publications

As societal demand for food, water and other life-sustaining resources grows, the science of ecosystem services (ES) is seen as a promising tool to improve our understanding, and ultimately the management, of increasingly uncertain supplies of critical goods provided or supported by natural ecosystems. This promise, however, is tempered by a relatively primitive understanding of the complex systems supporting ES, which as a result are often quantified as static resources rather than as the dynamic expression of human-natural systems. This article attempts to pinpoint the minimum level of detail that ES science needs to achieve in order to usefully inform …

A Methodology For Adaptable And Robust Ecosystem Services Assessment, Ferdinando Villa, Kenneth J. Bagstad, Brian Voigt, Gary W. Johnson, Rosimeiry Portela, Miroslav Honzák, David Batker

Rubenstein School of Environment and Natural Resources Faculty Publications

Ecosystem Services (ES) are an established conceptual framework for attributing value to the benefits that nature provides to humans. As the promise of robust ES-driven management is put to the test, shortcomings in our ability to accurately measure, map, and value ES have surfaced. On the research side, mainstream methods for ES assessment still fall short of addressing the complex, multi-scale biophysical and socioeconomic dynamics inherent in ES provision, flow, and use. On the practitioner side, application of methods remains onerous due to data and model parameterization requirements. Further, it is increasingly clear that the dominant "one model fits all" …

Genetic Diversity And Demographic History Of Cajanus Spp. Illustrated From Genome-Wide Snps, Rachit K. Saxena, Eric Von Wettberg, Hari D. Upadhyaya, Vanessa Sanchez, Serah Songok, Kulbhushan Saxena, Paul Kimurto, Rajeev K. Varshney

College of Agriculture and Life Sciences Faculty Publications

Understanding genetic structure of Cajanus spp. is essential for achieving genetic improvement by quantitative trait loci (QTL) mapping or association studies and use of selected markers through genomic assisted breeding and genomic selection. After developing a comprehensive set of 1,616 single nucleotide polymorphism (SNPs) and their conversion into cost effective KASPar assays for pigeonpea (Cajanus cajan), we studied levels of genetic variability both within and between diverse set of Cajanus lines including 56 breeding lines, 21 landraces and 107 accessions from 18 wild species. These results revealed a high frequency of polymorphic SNPs and relatively high level of cross-species transferability. …

Environmental Footprints Show China And Europe's Evolving Resource Appropriation For Soybean Production In Mato Grosso, Brazil, Michael J. Lathuillière, Mark S. Johnson, Gillian L. Galford, Eduardo G. Couto

Rubenstein School of Environment and Natural Resources Faculty Publications

Mato Grosso has become the center of Brazil's soybean industry, with production located across an agricultural frontier expanding into savanna and rainforest biomes. We present environmental footprints of soybean production in Mato Grosso and resource flows accompanying exports to China and Europe for the 2000s using five indicators: deforestation, land footprint (LF), carbon footprint (CF), water footprint (WF), and nutrient footprints. Soybean production was associated with 65% of the state's deforestation, and 14–17% of total Brazilian land use change carbon emissions. The decade showed two distinct production systems illustrated by resources used in the first and second half of the …

Preliminary Effects Of Fertilization On Ecochemical Soil Condition In Mature Spruce Stands Experiencing Dieback In The Beskid Śla̧Ski And Żywiecki Mountains, Poland, Stanisław Małek, Kazimierz Januszek, William S. Keeton, Józef Barszcz, Marek Kroczek, Ewa Błońska, Tomasz Wanic

Rubenstein School of Environment and Natural Resources Faculty Publications

In recent years, there has been the phenomena of spruce dieback in Europe. Significant areas of spruce low mortality now cover both sides of the Polish southern border. We evaluated ecochemical parameters influencing the heavy dieback occurring in mature spruce stands in the Polish Carpathian Mountains. Dolomite, magnesite and serpentinite fertilizers were applied to experimental plots located in 100-year-old stands in the autumn of 2008. The experimental plots were located in the mid-elevational forest zone (900-950 m) on two nappes of the flysch Carpathians: Magura (Ujsoły Forest District) and Silesian (Wisła Forest District). The saturation of the studied soils demonstrates …

Renewable Energy Zoning: Cutting Green Tape While Improving Ecological Outcomes For Renewable Energy Projects, Joanna Elizabeth White

Graduate College Dissertations and Theses

Climate change creates an imperative to develop renewable energy infrastructure, and the state of Vermont has committed to developing new renewables. However, renewables pose significant threats to natural systems because of the dramatic changes to ecosystems that occur with development. Public outcry over new developments and dissatisfaction with the current process used for siting indicate that the old regulatory process may be outdated. This thesis seeks to bridge the divide between ecology and law in renewable energy infrastructure siting. Using the state of Vermont as a case study, it suggests a new, proactive energy planning process that would use spatial …

From Theoretical To Actual Ecosystem Services: Mapping Beneficiaries And Spatial Flows In Ecosystem Service Assessments, Kenneth J. Bagstad, Ferdinando Villa, David Batker, Jennifer Harrison-Cox, Brian Voigt, Gary W. Johnson

Rubenstein School of Environment and Natural Resources Faculty Publications

Ecosystem services mapping and modeling has focused more on supply than demand, until recently. Whereas the potential provision of economic benefits from ecosystems to people is often quantified through ecological production functions, the use of and demand for ecosystem services has received less attention, as have the spatial flows of services from ecosystems to people. However, new modeling approaches that map and quantify service-specific sources (ecosystem capacity to provide a service), sinks (biophysical or anthropogenic features that deplete or alter service flows), users (user locations and level of demand), and spatial flows can provide a more complete understanding of ecosystem …

Considering Vermont's Future In A Changing Climate: The First Vermont Climate Assessment, Gillian L. Galford, Ann Hoogenboom, Sam Carlson, Sarah Ford, Julie Nash, Elizabeth Palchak, Sarah Pears, Kristen Underwood, Daniel V. Baker

Rubenstein School of Environment and Natural Resources Faculty Publications

The Vermont Climate Assessment (VCA) paints a vivid picture of a changing climate in Vermont and calls for immediate strategic planning to sustain the social, economic and environmental fabric of our state. The VCA is the first state-scale climate assessment in the country and speaks directly to the impacts of climate change as they pertain to our rural towns, cities and communities, including impacts on Vermont tourism and recreation, agriculture, natural resources and energy.

Governing Agriculture-Forest Landscapes To Achieve Climate Change Mitigation, Arun Agrawal, E. Wollenberg, L. Persha

Rubenstein School of Environment and Natural Resources Faculty Publications

This introduction to the special section on "Governing Agriculture-Forest Landscapes to Achieve Climate Change Mitigation" reviews external interventions to improve forest conditions and reduce deforestation, and by extension, influence carbon storage in agriculture-forest landscapes. The review is based on a careful survey of 123 cases of project-based and policy interventions to influence land use and forest cover outcomes. We propose that outcomes of interventions can be explained in terms of rights, incentives, and technologies related to land use and apply this framework to examine 12 types of interventions in agriculture-forest landscapes. The analysis of the identified 123 cases raises concerns …

The Forest Has A Story: Cultural Ecosystem Services In Kona, Hawai‘I, Rachelle K. Gould, Nicole M. Ardoin, Ulalia Woodside, Terre Satterfield, Neil Hannahs, Gretchen C. Daily

Rubenstein School of Environment and Natural Resources Faculty Publications

Understanding cultural dimensions of human/environment relationships is now widely seen as key to effective management, yet characterizing these dimensions remains a challenge. We report on an approach for considering the nonmaterial values associated with ecosystems, i.e., cultural ecosystem services. We applied the approach in Kona, Hawai‘i, using 30 semistructured interviews and 205 in-person surveys, striving to balance pragmatism and depth. We found spirituality, heritage, and identity-related values to be particularly salient, with expression of some of these values varying among respondents by ethnicity and duration of residence in Hawai‘i. Although people of various backgrounds reported strong spirituality and heritage-related values, …

Whales As Marine Ecosystem Engineers, Joe Roman, James A. Estes, Lyne Morissette, Craig Smith, Daniel Costa, James Mccarthy, J. B. Nation, Stephen Nicol, Andrew Pershing, Victor Smetacek

Rubenstein School of Environment and Natural Resources Faculty Publications

Baleen and sperm whales, known collectively as the great whales, include the largest animals in the history of life on Earth. With high metabolic demands and large populations, whales probably had a strong influence on marine ecosystems before the advent of industrial whaling: as consumers of fish and invertebrates; as prey to other large-bodied predators; as reservoirs of and vertical and horizontal vectors for nutrients; and as detrital sources of energy and habitat in the deep sea. The decline in great whale numbers, estimated to be at least 66% and perhaps as high as 90%, has likely altered the structure …

Master's Project: Intervale Out Loud: A Place-Based Oral History Project, Katharan M. Blofson

Rubenstein School Masters Project Publications

Landscape analysis explores the social and ecological processes that drive landscape patterns, and is closely allied with landscape ecology and geography. UVM's PLACE (Place-based Landscape Analysis and Community Engagement) Program is a collaboration with Shelburne Farms, and uses landscape analysis to express an integrative “story of place” through the lenses of the physical, ecological and cultural landscapes. While landscape analysis field methods address the physical and ecological landscapes, no clear methodology has emerged to support a holistic analysis of the cultural landscape and an understanding of relationships with place. Oral history is an open-ended, flexible method that engages diverse perspectives …

Modeling The Effects Of The Hemlock Woolly Adelgid On Carbon Storage In Northern New England Forests, Jeffrey John Krebs

Graduate College Dissertations and Theses

The hemlock woolly adelgid (HWA, Adelges tsugae Annand) is an invasive insect that threatens to eradicate native eastern hemlock (Tsuga canadensis (L.) Carr.) across the eastern United States. In southern New England and southern Appalachian forests, HWA-induced hemlock mortality has impacted carbon (C) flux by altering stand age, litter composition, species composition, and coarse woody debris levels. However, no one has examined how total C storage and sequestration may be impacted by these changes. Further, while projections are that HWA will ultimately infest hemlock across its entire geographic range, the majority of studies have been limited to southern New …

Impacts Of Projected Climate Change Over The Lake Champlain Basin In Vermont, Justin Guilbert, Brian Beckage, Jonathan M. Winter, Radley M. Horton, Timothy Perkins, Arne Bomblies

College of Agriculture and Life Sciences Faculty Publications

The Lake Champlain basin is a critical ecological and socioeconomic resource of the northeastern United States and southern Quebec, Canada. While general circulation models (GCMs) provide an overview of climate change in the region, they lack the spatial and temporal resolution necessary to fully anticipate the effects of rising global temperatures associated with increasing greenhouse gas concentrations. Observed trends in precipitation and temperature were assessed across the Lake Champlain basin to bridge the gap between global climate change and local impacts. Future shifts in precipitation and temperature were evaluated as well as derived indices, including maple syrup production, days above …

Ecological Remediation Using Bacterial, Fungal, And Plant Microcosms: An Effective Solution For Bunker C Crude Oil Contamination In Waterways, Jakob E. Schenker

Graduate College Dissertations and Theses

Factory legacy pollutants are an increasing concern for waterways as old infrastructure deteriorates and contaminates nearby environments. The Fisherville Mill in Grafton, Massachusetts, USA exemplifies this problem since it has now fallen into disrepair and is leaking Bunker C crude oil into the adjoining Blackstone River, a third order stream. Our research examines how effectively an ecologically engineered system (EES), consisting of anaerobic bacteria environments, fungal microcosms, and aquatic plant environments, can break down petroleum hydrocarbons, specifically aliphatic and polycyclic aromatic hydrocarbons (PAH), in this river environment.

Our testing protocol involved taking water samples before and after each filtration stage …

Shade Coffee: Update On A Disappearing Refuge For Biodiversity, Shalene Jha, Christopher M. Bacon, Stacy M. Philpott, V. Ernesto Méndez, Peter Läderach, Robert A. Rice

College of Agriculture and Life Sciences Faculty Publications

In the past three decades, coffee cultivation has gained widespread attention for its crucial role in supporting local and global biodiversity. In this synthetic Overview, we present newly gathered data that summarize how global patterns in coffee distribution and shade vegetation have changed and discuss implications for biodiversity, ecosystem services, and livelihoods. Although overall cultivated coffee area has decreased by 8% since 1990, coffee production and agricultural intensification have increased in many places and shifted globally, with production expanding in Asia while contracting in Africa. Ecosystem services such as pollination, pest control, climate regulation, and nutrient sequestration are generally greater …

More Cells, Bigger Cells Or Simply Reorganization? Alternative Mechanisms Leading To Changed Internode Architecture Under Contrasting Stress Regimes, Heidrun Huber, Jan De Brouwer, Eric J. Von Wettberg, Heinjo J. During, Niels P.R. Anten

College of Agriculture and Life Sciences Faculty Publications

Summary: Shading and mechanical stress (MS) modulate plant architecture by inducing different developmental pathways. Shading results in increased stem elongation, often reducing whole-plant mechanical stability, while MS inhibits elongation, with a concomitant increase in stability. Here, we examined how these organ-level responses are related to patterns and processes at the cellular level by exposing Impatiens capensis to shading and MS. Shading led to the production of narrower cells along the vertical axis. By contrast, MS led to the production of fewer, smaller and broader cells. These responses to treatments were largely in line with genetic differences found among plants from …

Social Responsibility And Succession Planning: A Qualitative Application Of The Theory Of Planned Behavior Among Small Businesses In Vermont, Alana Marie Izzo

Graduate College Dissertations and Theses

Small businesses are critically important to the current U.S. economy. This is especially true for Vermont. In 2010, small Vermont businesses represented 96.3% of all employers accounting for approximately 60% of the private sector workforce (SBA, 2013). Entrepreneurs are drawn to Vermont for the quality of life, progressive atmosphere, and its distinction for fostering companies with socially, ethically and environmentally driven missions. Succession is an important stage in a company's life-cycle. Thus, succession planning is a crucial activity for founders, owners or high-level managers, (here after referred to as leaders,) in which to participate. This study explores the current environment …

Connecting Landscapes To People: Assessing The Distribution Of Ecosystem Service Flows Using The Span Approach, Gary Wayne Johnson

Graduate College Dissertations and Theses

The Service Path Attribution Network (SPAN) framework provides a novel, user-centric, connectivity-based approach to ecosystem service assessment and valuation (ESAV). Ecosystem services are delivered to users through the simulated flow of some service medium (i.e., matter, energy, or information) from the ecosystems in which it originates (sources) to the people or assets which it affects (users). Along the way, the service medium may be absorbed by intervening landscape features (sinks) or captured by rival users.

Crucially, the service medium is not itself an ecosystem service or benefit but rather an agnostic transport mechanism which establishes connectivity between sources, sinks, rival …

Local Energy Governance In Vermont: An Analysis Of Energy System Transition Strategies And Actor Capacity, Tarah Rowse

Graduate College Dissertations and Theses

While global, national, and regional efforts to address climate and energy challenges remain essential, local governments and community groups are playing an increasingly stronger and vital role. As an active state in energy system policy, planning and innovation, Vermont offers a testing ground for research into energy governance at the local level. A baseline understanding of the energy planning and energy organizing activities initiated at the local level can support efforts to foster a transition to a sustainable energy system in Vermont. Following an inductive, applied and participatory approach, and grounded in the fields of sustainability transitions, energy planning, and …

Decision Support For Natural Resource Management, Jonathan Cummings

Graduate College Dissertations and Theses

This research spans a variety of research topics with a common theme, providing decision support through the development and analysis of methods that assist decision making for natural resource and wildlife management. I used components of structured decision making and decision analysis to address natural resources management problems, specifically monitoring and estimating the status of harvested populations, as well as data collection decisions for landscape conservation.

My results have implications for the way populations are monitored and their status is estimated. I find that the inclusion of error in data collection can have a substantial impact of the performance of …