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Full-Text Articles in Physical Sciences and Mathematics

Risk Attitudes Affect Livestock Biosecurity Decisions With Ramifications For Disease Control In A Simulated Production System, Gabriela Bucini, Scott C. Merrill, Eric Clark, Susan M. Moegenburg, Asim Zia, Christopher J. Koliba, Serge Wiltshire, Luke Trinity, Julia M. Smith Jan 2019

Risk Attitudes Affect Livestock Biosecurity Decisions With Ramifications For Disease Control In A Simulated Production System, Gabriela Bucini, Scott C. Merrill, Eric Clark, Susan M. Moegenburg, Asim Zia, Christopher J. Koliba, Serge Wiltshire, Luke Trinity, Julia M. Smith

College of Agriculture and Life Sciences Faculty Publications

HOG producers' operational decisions can be informed by an awareness of risks associated with emergent and endemic diseases. Outbreaks of porcine epidemic diarrhea virus (PEDv) have been re-occurring every year since the first onset in 2013 with substantial losses across the hog production supply chain. Interestingly, a decreasing trend in PEDv incidence is visible. We assert that changes in human behaviors may underlie this trend. Disease prevention using biosecurity practices is used to minimize risk of infection but its efficacy is conditional on human behavior and risk attitude. Standard epidemiological models bring important insights into disease dynamics but have limited …


Willingness To Comply With Biosecurity In Livestock Facilities: Evidence From Experimental Simulations, Scott C. Merrill, Susan Moegenburg, Christopher J. Koliba, Asim Zia, Luke Trinity, Eric Clark, Gabriela Bucini, Serge Wiltshire, Timothy Sellnow, Deanna Sellnow, Julia M. Smith Jan 2019

Willingness To Comply With Biosecurity In Livestock Facilities: Evidence From Experimental Simulations, Scott C. Merrill, Susan Moegenburg, Christopher J. Koliba, Asim Zia, Luke Trinity, Eric Clark, Gabriela Bucini, Serge Wiltshire, Timothy Sellnow, Deanna Sellnow, Julia M. Smith

College of Agriculture and Life Sciences Faculty Publications

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. Disease in U.S. animal livestock industries annually costs over a billion dollars. Adoption and compliance with biosecurity practices is necessary to successfully reduce the risk of disease introduction or spread. Yet, a variety …


Ecology And Genomics Of An Important Crop Wild Relative As A Prelude To Agricultural Innovation, Eric J.B. Von Wettberg, Peter L. Chang, Fatma Başdemir, Noelia Carrasquila-Garcia, Lijalem Balcha Korbu, Susan M. Moenga, Gashaw Bedada, Alex Greenlon, Ken S. Moriuchi, Vasantika Singh, Matilde A. Cordeiro, Nina V. Noujdina, Kassaye Negash Dinegde, Syed Gul Abbas Shah Sani, Tsegaye Getahun, Lisa Vance, Emily Bergmann, Donna Lindsay, Bullo Erena Mamo, Emily J. Warschefsky, Emmanuel Dacosta-Calheiros, Edward Marques, Mustafa Abdullah Yilmaz, Ahmet Cakmak, Janna Rose, Andrew Migneault, Christopher P. Krieg, Sevgi Saylak, Hamdi Temel, Maren L. Friesen, Eleanor Siler Dec 2018

Ecology And Genomics Of An Important Crop Wild Relative As A Prelude To Agricultural Innovation, Eric J.B. Von Wettberg, Peter L. Chang, Fatma Başdemir, Noelia Carrasquila-Garcia, Lijalem Balcha Korbu, Susan M. Moenga, Gashaw Bedada, Alex Greenlon, Ken S. Moriuchi, Vasantika Singh, Matilde A. Cordeiro, Nina V. Noujdina, Kassaye Negash Dinegde, Syed Gul Abbas Shah Sani, Tsegaye Getahun, Lisa Vance, Emily Bergmann, Donna Lindsay, Bullo Erena Mamo, Emily J. Warschefsky, Emmanuel Dacosta-Calheiros, Edward Marques, Mustafa Abdullah Yilmaz, Ahmet Cakmak, Janna Rose, Andrew Migneault, Christopher P. Krieg, Sevgi Saylak, Hamdi Temel, Maren L. Friesen, Eleanor Siler

College of Agriculture and Life Sciences Faculty Publications

Domesticated species are impacted in unintended ways during domestication and breeding. Changes in the nature and intensity of selection impart genetic drift, reduce diversity, and increase the frequency of deleterious alleles. Such outcomes constrain our ability to expand the cultivation of crops into environments that differ from those under which domestication occurred. We address this need in chickpea, an important pulse legume, by harnessing the diversity of wild crop relatives. We document an extreme domestication-related genetic bottleneck and decipher the genetic history of wild populations. We provide evidence of ancestral adaptations for seed coat color crypsis, estimate the impact of …


From The Household To Watershed: A Cross-Scale Analysis Of Residential Intention To Adopt Green Stormwater Infrastructure, Sarah Coleman, Stephanie Hurley, Donna Rizzo, Christopher Koliba, Asim Zia Dec 2018

From The Household To Watershed: A Cross-Scale Analysis Of Residential Intention To Adopt Green Stormwater Infrastructure, Sarah Coleman, Stephanie Hurley, Donna Rizzo, Christopher Koliba, Asim Zia

College of Agriculture and Life Sciences Faculty Publications

Improved stormwater management for the protection of water resources requires bottom-up stewardship from landowners, including adoption of Green Stormwater Infrastructure (GSI). We use a statewide survey of Vermont paired with a cross-scale and spatial analysis to evaluate the influence of interacting spatial, social, and physical factors on residential intention to adopt GSI across a complex social-ecological landscape. Specifically, we focus on how three GSI practices, (“rain garden (bio retention),” “infiltration trenches,” and “actively divert roof runoff to a rain barrel/lawn/garden instead of the street/sewer”) vary with barriers to adoption, and household attributes across stormwater contexts from the household to watershed …


From The Household To Watershed: A Cross-Scale Analysis Of Residential Intention To Adopt Green Stormwater Infrastructure, Sarah Coleman, Stephanie Hurley, Donna Rizzo, Christopher Koliba, Asim Zia Dec 2018

From The Household To Watershed: A Cross-Scale Analysis Of Residential Intention To Adopt Green Stormwater Infrastructure, Sarah Coleman, Stephanie Hurley, Donna Rizzo, Christopher Koliba, Asim Zia

College of Agriculture and Life Sciences Faculty Publications

Improved stormwater management for the protection of water resources requires bottom-up stewardship from landowners, including adoption of Green Stormwater Infrastructure (GSI). We use a statewide survey of Vermont paired with a cross-scale and spatial analysis to evaluate the influence of interacting spatial, social, and physical factors on residential intention to adopt GSI across a complex social-ecological landscape. Specifically, we focus on how three GSI practices, (“rain garden (bio retention),” “infiltration trenches,” and “actively divert roof runoff to a rain barrel/lawn/garden instead of the street/sewer”) vary with barriers to adoption, and household attributes across stormwater contexts from the household to watershed …


Ensuring Compliance From 35,000 Feet: Accountability And Trade-Offs In Aviation Safety Regulatory Networks, Russell W. Mills, Christopher J. Koliba, Dorit Rubinstein Reiss Nov 2018

Ensuring Compliance From 35,000 Feet: Accountability And Trade-Offs In Aviation Safety Regulatory Networks, Russell W. Mills, Christopher J. Koliba, Dorit Rubinstein Reiss

College of Agriculture and Life Sciences Faculty Publications

A puzzle that faces public administrators within regulatory networks is how to balance the need for public or democratic accountability with increasing demands from interest groups and elected officials to utilize the expertise of the private sector in developing process-oriented programs that ensure compliance. This article builds upon the network governance accountability framework developed by Koliba, Mills, and Zia to explore the dominant accountability frames and the accountability trade-offs that shape the process-oriented regulatory regime used by the Federal Aviation Administration (FAA) to oversee and regulate air carriers in the United States.


The Perceived Influence Of Cost-Offset Community-Supported Agriculture On Food Access Among Low-Income Families, Michelle J. White, Stephanie B. Jilcott Pitts, Jared T. Mcguirt, Karla L. Hanson, Emily H. Morgan, Jane Kolodinsky, Weiwei Wang, Marilyn Sitaker, Alice S. Ammerman, Rebecca A. Seguin Oct 2018

The Perceived Influence Of Cost-Offset Community-Supported Agriculture On Food Access Among Low-Income Families, Michelle J. White, Stephanie B. Jilcott Pitts, Jared T. Mcguirt, Karla L. Hanson, Emily H. Morgan, Jane Kolodinsky, Weiwei Wang, Marilyn Sitaker, Alice S. Ammerman, Rebecca A. Seguin

College of Agriculture and Life Sciences Faculty Publications

Objective To examine perspectives on food access among low-income families participating in a cost-offset community-supported agriculture (CO-CSA) programme.Design Farm Fresh Foods for Healthy Kids (F3HK) is a multicentre randomized intervention trial assessing the effect of CO-CSA on dietary intake and quality among children from low-income families. Focus groups were conducted at the end of the first CO-CSA season. Participants were interviewed about programme experiences, framed by five dimensions of food access: Availability, accessibility, affordability, acceptability and accommodation. Transcribed data were coded on these dimensions plus emergent themes.Setting Nine communities in the US states of New York, North Carolina, Washington and …


Agroecology In Canada: Towards An Integration Of Agroecological Practice, Movement, And Science, Marney E. Isaac, S. Ryan Isakson, Bryan Dale, Charles Z. Levkoe, Sarah K. Hargreaves, V. Ernesto Méndez, Hannah Wittman, Colleen Hammelman, Jennifer C. Langill, Adam R. Martin, Erin Nelson, Michael Ekers, Kira A. Borden, Stephanie Gagliardi, Serra Buchanan, Sarah Archibald, Astrid Gálvez Ciani Sep 2018

Agroecology In Canada: Towards An Integration Of Agroecological Practice, Movement, And Science, Marney E. Isaac, S. Ryan Isakson, Bryan Dale, Charles Z. Levkoe, Sarah K. Hargreaves, V. Ernesto Méndez, Hannah Wittman, Colleen Hammelman, Jennifer C. Langill, Adam R. Martin, Erin Nelson, Michael Ekers, Kira A. Borden, Stephanie Gagliardi, Serra Buchanan, Sarah Archibald, Astrid Gálvez Ciani

College of Agriculture and Life Sciences Faculty Publications

This article surveys the current state of agroecology in Canada, giving particular attention to agroecological practices, the related social movements, and the achievements of agroecological science. In each of these realms, we find that agroecology emerges as a response to the various social and ecological problems associated with the prevailing industrial model of agricultural production that has long been promoted in the country under settler colonialism. Although the prevalence and prominence of agroecology is growing in Canada, its presence is still small and the support for its development is limited. We provide recommendations to achieve a more meaningful integration of …


Pod Shattering: A Homologous Series Of Variation Underlying Domestication And An Avenue For Crop Improvement, Ezgi Ogutcen, Anamika Pandey, Mohd Kamran Khan, Edward Marques, R. Varma Penmetsa, Abdullah Kahraman, Eric J.B. Von Wettberg Aug 2018

Pod Shattering: A Homologous Series Of Variation Underlying Domestication And An Avenue For Crop Improvement, Ezgi Ogutcen, Anamika Pandey, Mohd Kamran Khan, Edward Marques, R. Varma Penmetsa, Abdullah Kahraman, Eric J.B. Von Wettberg

College of Agriculture and Life Sciences Faculty Publications

All rights reserved. In wild habitats, fruit dehiscence is a critical strategy for seed dispersal; however, in cultivated crops it is one of the major sources of yield loss. Therefore, indehiscence of fruits, pods, etc., was likely to be one of the first traits strongly selected in crop domestication. Even with the historical selection against dehiscence in early domesticates, it is a trait still targeted in many breeding programs, particularly in minor or underutilized crops. Here, we review dehiscence in pulse (grain legume) crops, which are of growing importance as a source of protein in human and livestock diets, and …


Mandatory Labels Can Improve Attitudes Toward Genetically Engineered Food, Jane Kolodinsky, Jayson L. Lusk Jun 2018

Mandatory Labels Can Improve Attitudes Toward Genetically Engineered Food, Jane Kolodinsky, Jayson L. Lusk

College of Agriculture and Life Sciences Faculty Publications

The prospect of state and federal laws mandating labeling of genetically engineered (GE) food has prompted vigorous debate about the consequences of the policy on consumer attitudes toward these technologies. There has been substantial debate over whether mandated labels might increase or decrease consumer aversion toward genetic engineering. This research aims to help resolve this issue using a data set containing more than 7800 observations that measures levels of opposition in a national control group compared to levels in Vermont, the only U.S. state to have implemented mandatory labeling of GE foods. Difference-in-difference estimates of opposition to GE food before …


Gaining And Maintaining A Competitive Edge: Evidence From Csa Members And Farmers On Local Food Marketing Strategies, Emily H. Morgan, Michelle M. Severs, Karla L. Hanson, Jared Mcguirt, Florence Becot, Weiwei Wang, Jane Kolodinsky, Marilyn Sitaker, Stephanie B.Jilcott Pitts, Alice Ammerman, Rebecca A. Seguin Jun 2018

Gaining And Maintaining A Competitive Edge: Evidence From Csa Members And Farmers On Local Food Marketing Strategies, Emily H. Morgan, Michelle M. Severs, Karla L. Hanson, Jared Mcguirt, Florence Becot, Weiwei Wang, Jane Kolodinsky, Marilyn Sitaker, Stephanie B.Jilcott Pitts, Alice Ammerman, Rebecca A. Seguin

College of Agriculture and Life Sciences Faculty Publications

Community-supported agriculture (CSA) is a widely-used approach for farmers to sell directly to consumers. We used the product, place, price, and promotion (4P) marketing mix framework to examine characteristics that help farms offering CSA maintain member satisfaction and thus competitiveness. We conducted semi-structured interviews with 20 CSA members and 24 CSA farmers in four states. CSA members additionally completed a modified choice experiment. Qualitative data were coded iteratively, and choice experiment data were summarized and compared across scenarios. CSA members and farmers were motivated by a range of personal, social, environmental, and economic objectives. Members favored high-quality staple vegetables (e.g., …


Climate Change Mitigation Beyond Agriculture: A Review Of Food System Opportunities And Implications, Meredith T. Niles, Richie Ahuja, Todd Barker, Jimena Esquivel, Sophie Gutterman, Martin C. Heller, Nelson Mango, Diana Portner, Rex Raimond, Cristina Tirado, Sonja Vermeulen Jun 2018

Climate Change Mitigation Beyond Agriculture: A Review Of Food System Opportunities And Implications, Meredith T. Niles, Richie Ahuja, Todd Barker, Jimena Esquivel, Sophie Gutterman, Martin C. Heller, Nelson Mango, Diana Portner, Rex Raimond, Cristina Tirado, Sonja Vermeulen

College of Agriculture and Life Sciences Faculty Publications

A large body of research has explored opportunities to mitigate climate change in agricultural systems; however, less research has explored opportunities across the food system. Here we expand the existing research with a review of potential mitigation opportunities across the entire food system, including in pre-production, production, processing, transport, consumption and loss and waste. We detail and synthesize recent research on the topic, and explore the applicability of different climate mitigation strategies in varying country contexts with different economic and agricultural systems. Further, we highlight some potential adaptation co-benefits of food system mitigation strategies and explore the potential implications of …


Capturing Variation In Lens (Fabaceae): Development And Utility Of An Exome Capture Array For Lentil, Ezgi Ogutcen, Larissa Ramsay, Eric Bishop Von Wettberg, Kirstin E. Bett Jun 2018

Capturing Variation In Lens (Fabaceae): Development And Utility Of An Exome Capture Array For Lentil, Ezgi Ogutcen, Larissa Ramsay, Eric Bishop Von Wettberg, Kirstin E. Bett

College of Agriculture and Life Sciences Faculty Publications

Premise of the Study: Lentil is an important legume crop with reduced genetic diversity caused by domestication bottlenecks. Due to its large and complex genome, tools for reduced representation sequencing are needed. We developed an exome capture array for use in various genetic diversity studies. Methods: Based on the CDC Redberry draft genome, we developed an exome capture array using multiple sources of transcript resources. The probes were designed to target not only the cultivated lentil, but also wild species. We assessed the utility of the developed method by applying the generated data set to population structure and phylogenetic analyses. …


Relationship Between Food Waste, Diet Quality, And Environmental Sustainability, Zach Conrad, Meredith T. Niles, Deborah A. Neher, Eric D. Roy, Nicole E. Tichenor, Lisa Jahns Apr 2018

Relationship Between Food Waste, Diet Quality, And Environmental Sustainability, Zach Conrad, Meredith T. Niles, Deborah A. Neher, Eric D. Roy, Nicole E. Tichenor, Lisa Jahns

College of Agriculture and Life Sciences Faculty Publications

Improving diet quality while simultaneously reducing environmental impact is a critical focus globally. Metrics linking diet quality and sustainability have typically focused on a limited suite of indicators, and have not included food waste. To address this important research gap, we examine the relationship between food waste, diet quality, nutrient waste, and multiple measures of sustainability: use of cropland, irrigation water, pesticides, and fertilizers. Data on food intake, food waste, and application rates of agricultural amendments were collected from diverse US government sources. Diet quality was assessed using the Healthy Eating Index-2015. A biophysical simulation model was used to estimate …


Effects Of Different Soil Media, Vegetation, And Hydrologic Treatments On Nutrient And Sediment Removal In Roadside Bioretention Systems, Paliza Shrestha, Stephanie E. Hurley, Beverley C. Wemple Mar 2018

Effects Of Different Soil Media, Vegetation, And Hydrologic Treatments On Nutrient And Sediment Removal In Roadside Bioretention Systems, Paliza Shrestha, Stephanie E. Hurley, Beverley C. Wemple

College of Agriculture and Life Sciences Faculty Publications

Water quality performance of eight roadside bioretention cells in their third and fourth years of implementation were evaluated in Burlington, Vermont. Bioretention cells received varying treatments: (1) vegetation with high-diversity (7 species) and low-diversity plant mix (2 species); (2) proprietary SorbtiveMedia™ (SM) containing iron and aluminum oxide granules to enhance sorption capacity for phosphorus; and (3) enhanced rainfall and runoff (RR) to certain cells (including one with SM treatment) at three levels (15%, 20%, 60% more than their control counterparts), mimicking anticipated precipitation increases associated with climate change. A total of 121 storms across all cells were evaluated in 2015 …


Genetic Diversity, Population Structure, And Genetic Correlation With Climatic Variation In Chickpea (Cicer Arietinum) Landraces From Pakistan, Syed Gul Abbas Shah Sani, Peter L. Chang, Asif Zubair, Noelia Carrasquilla-Garcia, Matilde Cordeiro, Ramachandra Varma Penmetsa, M. Farooq H. Munis, Sergey V. Nuzhdin, Douglas R. Cook, Eric J. Von Wettberg Mar 2018

Genetic Diversity, Population Structure, And Genetic Correlation With Climatic Variation In Chickpea (Cicer Arietinum) Landraces From Pakistan, Syed Gul Abbas Shah Sani, Peter L. Chang, Asif Zubair, Noelia Carrasquilla-Garcia, Matilde Cordeiro, Ramachandra Varma Penmetsa, M. Farooq H. Munis, Sergey V. Nuzhdin, Douglas R. Cook, Eric J. Von Wettberg

College of Agriculture and Life Sciences Faculty Publications

Chickpea (Cicer arietinum L.) production in arid regions, such as those predominant in Pakistan, faces immense challenges of drought and heat stress. Addressing these challenges is made more difficult by the lack of genetic and phenotypic characterization of available cultivated varieties and breeding materials. Genotyping-by-sequencing offers a rapid and cost-effective means to identify genome-wide nucleotide variation in crop germplasm. When combined with extended crop phenotypes deduced from climatic variation at sites of collection, the data can predict which portions of genetic variation might have roles in climate resilience. Here we use 8113 single nucleotide polymorphism markers to determine genetic variation …


Soil Media Co2 And N2O Fluxes Dynamics From Sand-Based Roadside Bioretention Systems, Paliza Shrestha, Stephanie E. Hurley, E. Carol Adair Feb 2018

Soil Media Co2 And N2O Fluxes Dynamics From Sand-Based Roadside Bioretention Systems, Paliza Shrestha, Stephanie E. Hurley, E. Carol Adair

College of Agriculture and Life Sciences Faculty Publications

Green stormwater infrastructure such as bioretention is commonly implemented in urban areas for stormwater quality improvements. Although bioretention systems' soil media and vegetation have the potential to increase carbon (C) and nitrogen (N) storage for climate change mitigation, this storage potential has not been rigorously studied, and any analysis of it must consider the question of whether bioretention emits greenhouse gases to the atmosphere. We monitored eight roadside bioretention cells for CO2-C and N2O-N fluxes during two growing seasons (May through October) in Vermont, USA. C and N stocks in the soil media layers, microbes, and aboveground vegetation were also …


A Cross-Country Analysis Of Climate Shocks And Smallholder Food Insecurity, Meredith T. Niles, Jonathan D. Salerno Feb 2018

A Cross-Country Analysis Of Climate Shocks And Smallholder Food Insecurity, Meredith T. Niles, Jonathan D. Salerno

College of Agriculture and Life Sciences Faculty Publications

Future climate changes will affect smallholder farmers in the developing world, posing threats to household food security. Nevertheless, there remains limited comparable evidence across multiple countries and regions regarding the global extent of climate shocks affecting smallholder food security. We examine data from 5,299 household surveys across 15 countries in Latin America, Africa and South Asia to assess the extent of climate shocks and their association with food insecurity, as well as what strategies may help buffer against climate shocks. We find that 71% of households reported experiencing a climate shock in the previous five years. Fifty-four percent reported experiencing …


The Impact Of Salinity On Mycorrhizal Colonization Of A Rare Legume, Galactia Smallii, In South Florida Pine Rocklands, Klara Scharnagl, Vanessa Sanchez, Eric Von Wettberg Jan 2018

The Impact Of Salinity On Mycorrhizal Colonization Of A Rare Legume, Galactia Smallii, In South Florida Pine Rocklands, Klara Scharnagl, Vanessa Sanchez, Eric Von Wettberg

College of Agriculture and Life Sciences Faculty Publications

Objectives: The success of restoration plantings depends on the capacity of transplanted individuals or seeds to establish and reproduce. It is increasingly recognized that restoration success depends quite heavily upon biotic interactions and belowground processes. Under stressful abiotic conditions, such as soils salinized by storm surge and sea level rise, symbiotic interactions with soil microbes such as mycorrhizae may be critically important. In this study, we investigate the impact of salinity on percent colonization of roots by arbuscular mycorrhizal fungi, in addition to the impacts of this colonization on plant fitness under saline conditions. Fifty Galactia smallii plants from an …


The Impact Of Genetic Changes During Crop Domestication On Healthy Food Development, Petr Smýkal, Matthew N. Nelson, Jens D. Berger, Eric J.B. Von Wettberg Jan 2018

The Impact Of Genetic Changes During Crop Domestication On Healthy Food Development, Petr Smýkal, Matthew N. Nelson, Jens D. Berger, Eric J.B. Von Wettberg

College of Agriculture and Life Sciences Faculty Publications

No abstract provided.


The Impact Of Genetic Changes During Crop Domestication, Petr Smýkal, Matthew N. Nelson, Jens D. Berger, Eric J.B. Von Wettberg Jan 2018

The Impact Of Genetic Changes During Crop Domestication, Petr Smýkal, Matthew N. Nelson, Jens D. Berger, Eric J.B. Von Wettberg

College of Agriculture and Life Sciences Faculty Publications

Humans have domesticated hundreds of plant and animal species as sources of food, fiber, forage, and tools over the past 12,000 years, with manifold effects on both human society and the genetic structure of the domesticated species. The outcomes of crop domestication were shaped by selection driven by human preferences, cultivation practices, and agricultural environments, as well as other population genetic processes flowing from the ensuing reduction in effective population size. It is obvious that any selection imposes a reduction of diversity, favoring preferred genotypes, such as nonshattering seeds or increased palatability. Furthermore, agricultural practices greatly reduced effective population sizes …


A Multi-Country Assessment Of Factors Related To Smallholder Food Security In Varying Rainfall Conditions, Meredith T. Niles, Molly E. Brown Dec 2017

A Multi-Country Assessment Of Factors Related To Smallholder Food Security In Varying Rainfall Conditions, Meredith T. Niles, Molly E. Brown

College of Agriculture and Life Sciences Faculty Publications

Given that smallholder farmers are frequently food insecure and rely significantly on rain-fed agriculture, it is critical to examine climate variability and food insecurity. We utilize data from smallholder farmer surveys from 12 countries with 30 years of rainfall data to examine how rainfall variability and household resources are correlated with food security. We find that on average, households that experienced a drier than average year are 3.81 months food insecure, while households within a normal range of rainfall were 3.67 months food insecure, and wetter than average households were 2.86 months food insecure. Reduced odds of food insecurity is …


Genomic Signature Of Adaptive Divergence Despite Strong Nonadaptive Forces On Edaphic Islands: A Case Study Of Primulina Juliae, Jing Wang, Chao Feng, Tenglong Jiao, Eric Bishop Von Wettberg, Ming Kang Dec 2017

Genomic Signature Of Adaptive Divergence Despite Strong Nonadaptive Forces On Edaphic Islands: A Case Study Of Primulina Juliae, Jing Wang, Chao Feng, Tenglong Jiao, Eric Bishop Von Wettberg, Ming Kang

College of Agriculture and Life Sciences Faculty Publications

Both genetic drift and divergent selection are expected to be strong evolutionary forces driving population differentiation on edaphic habitat islands. However, the relative contribution of genetic drift and divergent selection to population divergence has rarely been tested simultaneously. In this study, restriction-site associated DNA-based population genomic analyses were applied to assess the relative importance of drift and divergent selection on population divergence of Primulina juliae, an edaphic specialist fromsouthern China. All populations were found with low standing genetic variation, small effective population size (NE), and signatures of bottlenecks. Populations with the lowest genetic variation were most genetically differentiated from other …


The Complete Chloroplast Genome Of Primulina And Two Novel Strategies For Development Of High Polymorphic Loci For Population Genetic And Phylogenetic Studies, Chao Feng, Meizhen Xu, Chen Feng, Eric J.B. Von Wettberg, Ming Kang Nov 2017

The Complete Chloroplast Genome Of Primulina And Two Novel Strategies For Development Of High Polymorphic Loci For Population Genetic And Phylogenetic Studies, Chao Feng, Meizhen Xu, Chen Feng, Eric J.B. Von Wettberg, Ming Kang

College of Agriculture and Life Sciences Faculty Publications

Background: Primulina Hance is an emerging model for studying evolutionary divergence, adaptation and speciation of the karst flora. However, phylogenetic relationships within the genus have not been resolved due to low variation detected in the cpDNA regions. Chloroplast genomes can provide important information for phylogenetic and population genetic studies. Recent advances in next-generation sequencing (NGS) techniques greatly facilitate sequencing whole chloroplast genomes for multiple individuals. Consequently, novel strategies for development of highly polymorphic loci for population genetic and phylogenetic studies based on NGS data are needed. Methods: For development of high polymorphic loci for population genetic and phylogenetic studies, two …


Crowdsourced Delphis: Designing Solutions To Complex Environmental Problems With Broad Stakeholder Participation, Sarah Coleman, Stephanie Hurley, Christopher Koliba, Asim Zia Jul 2017

Crowdsourced Delphis: Designing Solutions To Complex Environmental Problems With Broad Stakeholder Participation, Sarah Coleman, Stephanie Hurley, Christopher Koliba, Asim Zia

College of Agriculture and Life Sciences Faculty Publications

There is a well-established need for increased stakeholder participation in the generation of adaptive management approaches and specific solutions to complex environmental problems. However, integrating participant feedback into current science, research, and decision-making processes is challenging. This paper presents a novel approach that marries a rigorous Delphi method, borrowed from policy and organizational sciences, with contemporary “crowdsourcing” to address the complex problems of water pollution exacerbated by climate change in the Lake Champlain Basin. In an online Delphi forum that occurred over a six-week period during the Spring of 2014, fifty-three participants proposed and commented on adaptive solutions to address …


Crowdsourced Delphis: Designing Solutions To Complex Environmental Problems With Broad Stakeholder Participation, Sarah Coleman, Stephanie Hurley, Christopher Koliba, Asim Zia Jul 2017

Crowdsourced Delphis: Designing Solutions To Complex Environmental Problems With Broad Stakeholder Participation, Sarah Coleman, Stephanie Hurley, Christopher Koliba, Asim Zia

College of Agriculture and Life Sciences Faculty Publications

There is a well-established need for increased stakeholder participation in the generation of adaptive management approaches and specific solutions to complex environmental problems. However, integrating participant feedback into current science, research, and decision-making processes is challenging. This paper presents a novel approach that marries a rigorous Delphi method, borrowed from policy and organizational sciences, with contemporary “crowdsourcing” to address the complex problems of water pollution exacerbated by climate change in the Lake Champlain Basin. In an online Delphi forum that occurred over a six-week period during the Spring of 2014, fifty-three participants proposed and commented on adaptive solutions to address …


Adults And Children In Low-Income Households That Participate In Cost-Offset Community Supported Agriculture Have High Fruit And Vegetable Consumption, Karla L. Hanson, Jane Kolodinsky, Weiwei Wang, Emily H. Morgan, Stephanie B. Jilcott Pitts, Alice S. Ammerman, Marilyn Sitaker, Rebecca A. Seguin Jul 2017

Adults And Children In Low-Income Households That Participate In Cost-Offset Community Supported Agriculture Have High Fruit And Vegetable Consumption, Karla L. Hanson, Jane Kolodinsky, Weiwei Wang, Emily H. Morgan, Stephanie B. Jilcott Pitts, Alice S. Ammerman, Marilyn Sitaker, Rebecca A. Seguin

College of Agriculture and Life Sciences Faculty Publications

Licensee MDPI, Basel, Switzerland. This paper examines fruit and vegetable intake (FVI) in low-income households that participated in a cost-offset (CO), or 50% subsidized, community-supported agriculture (CSA) program. CSA customers paid farms upfront for a share of the harvest, and received produce weekly throughout the growing season. A cohort of adults and children 2-12 y in a summer CO-CSA were surveyed online twice: August 2015 (n = 41) and February 2016 (n = 23). FVI was measured by the National Cancer Institute’s (NCI) Fruit and Vegetable Screener (FVS) and an inventory of locally grown fruits and vegetables. FVI relative to …


Farm Fresh Foods For Healthy Kids (F3hk): An Innovative Community Supported Agriculture Intervention To Prevent Childhood Obesity In Low-Income Families And Strengthen Local Agricultural Economies, Rebecca A. Seguin, Emily H. Morgan, Karla L. Hanson, Alice S. Ammerman, Stephanie B. Jilcott Pitts, Jane Kolodinsky, Marilyn Sitaker, Florence A. Becot, Leah M. Connor, Jennifer A. Garner, Jared T. Mcguirt Apr 2017

Farm Fresh Foods For Healthy Kids (F3hk): An Innovative Community Supported Agriculture Intervention To Prevent Childhood Obesity In Low-Income Families And Strengthen Local Agricultural Economies, Rebecca A. Seguin, Emily H. Morgan, Karla L. Hanson, Alice S. Ammerman, Stephanie B. Jilcott Pitts, Jane Kolodinsky, Marilyn Sitaker, Florence A. Becot, Leah M. Connor, Jennifer A. Garner, Jared T. Mcguirt

College of Agriculture and Life Sciences Faculty Publications

Background: Childhood obesity persists in the United States and is associated with serious health problems. Higher rates of obesity among children from disadvantaged households may be, in part, attributable to disparities in access to healthy foods such as fruits and vegetables. Community supported agriculture can improve access to and consumption of fresh produce, but the upfront payment structure, logistical barriers, and unfamiliarity with produce items may inhibit participation by low-income families. The aim of this project is to assess the impact of subsidized, or "cost-offset," community supported agriculture participation coupled with tailored nutrition education for low-income families with children. Methods/design: …


Integrating Agroecology And Participatory Action Research (Par): Lessons From Central America, V. Ernesto Méndez, Martha Caswell, Stephen R. Gliessman, Roseann Cohen Jan 2017

Integrating Agroecology And Participatory Action Research (Par): Lessons From Central America, V. Ernesto Méndez, Martha Caswell, Stephen R. Gliessman, Roseann Cohen

College of Agriculture and Life Sciences Faculty Publications

The last decade has seen an increasing advancement and interest in the integration of agroecology and participatory action research (PAR). This article aims to: (1) analyze the key characteristics and principles of two case studies that integrated PAR and agroecology in Central America; and (2) learn from the lessons offered by these case studies, as well as others from the literature, on how to better integrate PAR and agroecology. Key principles identified for effective PAR agroecological processes include a shared interest in research by partners, a belief in collective power/action, a commitment to participation, practicing humility and establishing trust and …


Harnessing Local Strength For Sustainable Coffee Value Chains In India And Nicaragua: Reevaluating Certification To Global Sustainability Standards, Dagmar Mithöfer, V. Ernesto Méndez, Arshiya Bose, Philippe Vaast Jan 2017

Harnessing Local Strength For Sustainable Coffee Value Chains In India And Nicaragua: Reevaluating Certification To Global Sustainability Standards, Dagmar Mithöfer, V. Ernesto Méndez, Arshiya Bose, Philippe Vaast

College of Agriculture and Life Sciences Faculty Publications

Coffee is generally grown in areas derived from forest, and both its expansion and management cause biodiversity loss. Sustainability standards in coffee are well established but have been criticized while social and environmental impact is elusive. This paper assesses the issue-attention cycle of coffee production in India and Nicaragua, including producer concerns and responses over time to concerns (sustainability standards, public regulations and development projects). Systematic comparison of the socioeconomic, environmental and policy context in both countries is then used to explore potential effects of sustainability standards. Results show limits, in local context, to relevance of global certification approaches: in …