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Grant awarded to study how plants affect microbiomes

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VT News | October 6, 2020

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For centuries, scientists have worked above ground, studying plants and their effect on biodiversity. Lying below the scientists’ feet, though, is a world with even richer biodiversity — the soil.

There are an estimated 1 billion cells and thousands of species of microbes in a single gram of soil, making it an extremely complex microbiome.

To help understand the complexity of soil microbiomes and how cover crops can help manage them, a four-year $500,000 grant was awarded to a team of Virginia Tech interdisciplinary researchers by the United States Department of Agriculture National Institute of Food and Agriculture.

The project integrates key agricultural concepts of cover crops – the microbiome, biodiversity, yield, and soil health – to build a whole-system perspective. The project is being led by Brian Badgley, an associate professor of environmental microbiology, and Jacob Barney, associate professor of invasive plant ecology — both in the School of Plant and Environmental Sciences in the College of Agriculture and Life Sciences; and Brian Strahm, an associate professor of forest resources and environmental conservation in the College of Natural Resources and Environment. All three are affiliated faculty members of the Global Change Center and Fralin Life Sciences Institute.

The soil microbiome has strong effects on how ecosystems function but is difficult to directly alter. The team is researching whether or not crop mixtures can be designed to change it indirectly with predictable outcomes and benefits.

The team will conduct their work at the College of Agriculture and Life SciencesKentland Farm.

The underlying principle behind the work is to examine how plants affect soil microorganisms, which has mostly been researched looking at only how a single plant affects the soil.

The research team will conduct their work on soil microbiomes at Kentland Farm. Photo credit: Olivia Coleman
The research team will conduct their work on soil microbiomes at Kentland Farm. Photo credit: Olivia Coleman

 

“We don’t have a really good understanding of the aggregate effect on soil microorganisms when we combine multiple plant species,” Badgley said. “By investigating underlying rules about how that happens, we hope to better understand how those effects scale up as you add more plant diversity.”

Cover crops make an excellent model for that because a cover crop mixture could comprise up to five plant species, which, when compared to a giant field of nothing but corn, is quite a bit of diversity.

“On the other hand, cover crop systems are still relatively simple plant communities that will, hopefully, make it easier to see some of these important signals about which parts of the soil microbiome are changing,” Badgley said. “What we learn about cover crops and agricultural sustainability has the added benefit to farmers of direct application in the field. However, by identifying the underlying relationships, we hope that results will also have applied benefits in other contexts, such as ecosystem restoration and potentially even landscaping and gardening.”

Each of the researchers brings a unique perspective into the mix, allowing them to analyze the whole complex system.

“In the end, we want to design mixtures that maximize plant diversity in different ways – either plant characteristics or the diversity of soil microorganisms that they recruit – based on results from individual plants,” Badgley said. “We then hope to understand whether different types of plant diversity ultimately change how the whole system will function.”

If that’s achieved, the research team could mix plants in the field for particular effects on soil microorganisms.

To better support the research, the grant will fund two Ph.D. candidates during its four-year run.

— Written by Max Esterhuizen

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Biodiversity Blog Conservation Food & Agriculture Global Change Research Sustainable Agriculture

VT testing bee-friendly forage for cattle

[vc_row][vc_column][vc_column_text]From VT News | February 5, 2020

The “fescue belt” stretches 1,000 miles across the southeastern United States, from Virginia and the Carolinas in the east to Kansas and Oklahoma in the west. It’s named for its predominant grass, tall fescue, which feeds millions of beef cattle over of thousands of farms and ranches.

Tall fescue was planted widely in the southeast in the mid-20th century because it’s a hardy grass, resistant to drought and cold, which makes it perfect to feed cattle during the winter and spring. But it harbors a fungus that can cause health problems in cattle, especially during the hot summer. And it’s an invasive species, native to Europe, that can crowd out wildflowers and other native plants, which could be contributing to the decline in the population of bees and other pollinating insects.

A new study led by Megan O’Rourke, an associate professor in the School of Plant and Environmental Sciences in the College of Agriculture and Life Sciences at Virginia Tech, will address both of these problems. The research team will plant native prairie grasses and wildflowers in pastures at research stations in Virginia and Tennessee, and on six on-farm sites in Northern Virginia, including on Thomas Jefferson Foundation farmland.

“We’re trying to transform the landscape to support both cattle and pollinators by planting more native wildflowers on farmland,” said O’Rourke, an affiliate of the Global Change Center.

The $1.8 million project is funded half by a federal grant and half by contributions of time, land, cattle and money by Virginia Tech, the University of Tennessee, farmers working with the researchers, and a nonprofit called Virginia Working Landscapes. The team will test 20 different wildflowers native to Virginia and Tennessee and will measure which ones attract the most bees and, when planted alongside native grasses, produce the healthiest cattle. The grant was awarded in December, and the work is getting underway in early 2020.

In December, the National Resources Conservation Service of the U.S. Department of Agriculture awarded $12.5 million to 19 different research projects studying various aspects of conservation on agricultural lands; the bees-and-beef study is one of four studies that will be conducted partly or wholly in Virginia, under grants totaling $2.3 million. The bees-and-beef grant is part of a broad effort by the federal government to study and combat the ongoing decline in bee populations.

O’Rourke is one of five Virginia Tech faculty members working on the study. Another is Ben Tracy, a Virginia Tech professor of grassland ecology and Virginia Cooperative Extension specialist who has been studying native prairie grasses and the effects of tall fescue on cattle for the past 15 years or so.

“The main health problem that fescue causes for cattle, fescue toxicosis, is not fatal, but it probably costs the cattle industry millions of dollars a year,” Tracy said. Affected cattle have trouble regulating their body temperatures in hot weather and they don’t eat as much and gain as much weight as healthy cattle. “Hopefully, adding native grasses and wildflowers to pastures will reduce fescue toxicosis.”

If this study succeeds, adding native wildflowers to pastures in the fescue belt will become a new conservation practice that USDA’s National Resource Conservation Service will cost share.

“If we can find a way, we can improve resources for pollinators and also improve livestock performance,” Tracy said. “It would be a win-win for the environment and for beef cattle producers.”

—Written by Tony Biasotti

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GCC affiliate Luis Escobar contributes to international report on health and climate change

[vc_row][vc_column][vc_column_text]From VT News | January 30, 2020

A child born today will experience a world 4 degrees warmer than the pre-industrial average. This seemingly small variable will have significant impacts on global health outcomes in the future.

To understand the scale and breadth of those outcomes and to offer solutions for countries most affected by climate change, The Lancet medical journal has recently published the 2019 Lancet Countdown. This report presents the findings and provides a collaborative perspective from 35 universities, institutions, and agencies on how climate change will influence human health.

Luis Escobar, assistant professor of disease ecology in the College of Natural Resources and Environment and an affiliate of the Global Change Center housed under Virginia Tech’s Fralin Life Sciences Institute, was a contributor to the report.

“The goal of the Lancet Countdown is to have a consortium of universities and institutions tackle a specific problem,” said Escobar, a faculty member in the Department of Fish and Wildlife Conservation. “We want to demonstrate not only the linkages between climate change and human health, but also provide some guidance about what can be done to limit those impacts.”

Escobar’s research focuses on infectious diseases, a human health challenge that is projected to be significantly impacted by climate change. Escobar said that there is a direct correlation between temperature rise and an increase in infectious disease outbreaks. He noted that this year’s Lancet report was able to take a unique approach to considering that correlation for several diseases.

“In previous studies, we’ve worked to see how climate change is going to impact water-borne diseases going forward,” he said. “This time, we looked to the past. We’ve been studying how environmental conditions have changed over the last two decades and how temperature increase is leading to more adverse outcomes.”

The 2019 Lancet Countdown made five key policy recommendations for countries: the reduction of greenhouse gas emissions, a commitment to ending reliance on fossil fuels, investments in infrastructure to support active lifestyles for people, investment in better monitoring of how climate change is impacting health outcomes, and a strengthening of health care systems.

While those solutions represent a global view of the challenges of climate change, Escobar said that it is easy to find local examples of these impacts.

“Virginia is the oyster capital of the Mid-Atlantic region,” he explained. “Oysters filter the water, which makes them potential carriers of water-borne diseases in the food chain. As climate change threatens aquatic ecosystems, there is a risk of an increase in water-borne pathogens that could contaminate oysters, and, in turn, infect people that consume them, which will result in tremendous damage for the oyster industry.”

Escobar said that the Lancet Countdown report reflects the necessity of having a broad vision when it comes to considering the challenges that a warming planet will bring. He also indicated that a goal of the Lancet Countdown is to change the narrative about climate change.

“We should stop talking about whether or not climate change is happening,” he said. “There is overwhelming evidence of climate change and climate change impacts around the world, and it is time to focus our efforts on demanding action from local and federal governments.”

Escobar noted that the Global Change Center plays a crucial role in helping Virginia Tech researchers and students connect local concerns with broader challenges taking place around the world.

“The Global Change Center allows us to develop local research and thinking on a global scale,” he said. “Questions of how climate change can impact the population of salamanders in the Appalachian Mountains, or how rising sea temperatures could affect coastal areas in Virginia can help researchers see the broader picture of climate change. The center, and my department at Virginia Tech, have both been catalysts in helping me position my science on climate change and health in the international discussion.”

— Written by David Fleming

 

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New research finds ranchers consider diverse factors in managing their land

[vc_row][vc_column][vc_column_text]From VT News | January 14, 2020

Wetlands in the Intermountain West, a region nestled between the Rocky Mountains, the Cascade Range, and the Sierra Nevada, are home to a diverse range of flora and fauna. Wetlands may only make up two percent of the region, but 80 percent of wildlife rely on the rich habitat they provide. The majority of these wetlands are located on private ranchlands. While the persistence of these “working wetlands” depends on the management decisions of ranchers, their perspectives are often missing from conservation and policy-making discussions.

In a new study published in Rangeland Ecology and Management, Ashley Dayer, an assistant professor in the Department of Fish and Wildlife Conservation in the College of Natural Resources and Environment at Virginia Tech, explores the diverse factors that influence how ranchers manage their land.

In collaboration with the Intermountain West Joint Venture, an organization committed to bird habitat conservation by fostering public-private partnerships, and the University of Montana, Dayer and her graduate student Mary Sketch (M.S. ’18)  hosted two landowner-listening workshops, one in southern Oregon and another in southwestern Wyoming, and invited various landowners and conservation professionals to encourage dialogue between the two parties. Partners for Conservation, a landowner-led conservation organization, played a key role in successful implementation of the workshops.

“In order to have effective conservation in the west, where ranchers own huge tracts of land, the conservation community is keen to work together with them. Ranchers can make choices to manage their land for the benefits of wildlife or they can make choices that don’t prioritize wildlife,” said Dayer, an affiliated faculty member of the Global Change Center, housed within the Fralin Life Sciences Institute. “We aimed to facilitate a better understanding of how conservation professionals could work with ranchers toward conservation and wildlife management goals.”

The relationships between conservationists and ranchers can be complicated. People are quick to assume that ranchers are solely concerned with profit, but Virginia Tech researchers find that ranchers’ decisions are more complex than that. This complexity needs to be taken into consideration when developing programs and policies to foster private lands conservation.

“The workshops created an open, trusting space where there was social learning and social exchange happening. It was important for ranchers to know the researchers and the conservation professionals alike were there to hear them,” said Mary Sketch, who was the lead author on this paper and another previously published in Society and Natural Resources on the method itself.

Dayer and Sketch evaluated the complex decision-making process of how ranchers choose to manage their land, more specifically how they choose to irrigate their land and why. They found that various reasons go into deciding how land is managed — not just money.

“Our project was able to add nuance to that understanding; there is a lot more to it,” said co-author Alex Metcalf, a social scientist and assistant professor in the W.A. Franke College of Forestry and Conservation at the University of Montana. “Yes, ranchers have to meet the bottom line because they have to make sure they have food on the table, but other concerns and considerations are at play in the choices that they make for their lands.”

This study specifically focused on choices about flood irrigation — a traditional method involving complex ditch systems that spread water across a field, recharging areas once sustained by natural flooding. When the water flows from the ditches, saturates the field, and seeps into the groundwater, it provides forage for cattle to graze on while providing rich habitat for migrating and breeding waterbirds, like ducks and cranes, as well as sage-grouse, an iconic ground-dwelling bird in decline.

“Flood irrigation is often vilified for not being water efficient. The numbers don’t always add up when it comes to saving water because there’s so much more in the game of land management and conservation, like creating wildlife habitat. This traditional definition of efficiency doesn’t grasp that social-ecological complexity,” Sketch said. “Our work suggests an expanded definition that considers how flood irrigation provides bird habitat on working wet meadows, recharges the groundwater for communities downstream, creates in-stream flow for fish, and keeps ranchers ranching.”

Local ranchers speak with partners
Local ranchers speak with partners. Photo courtesy of Intermountain West Joint Venture.

Ranchers described the factors that either help or hinder the use of flood irrigation on private lands. The study identified cultural considerations as a key enabler for continuing flood irrigation. “Ranchers have strong ties with the ranching lifestyle, so many choose to continue flood irrigation because of its history and their personal connection to it,” explained Sketch. “It’s something they do every year, the generation of ranchers before them did it, and want to maintain that tradition.”

“What stands out to me in this work is that there are a group of ranchers committed to the future of their land. They rely on that land for their livelihood; they’re closely tied to it; they spend every day outside. It’s something that they’re very passionate about,” Dayer said. “I think that’s just a critical thing for the majority of the U.S. public living far from ranches to keep in mind — our food isn’t just coming from grocery stores. It’s coming from people who are making choices about how land is used and whether to contribute to conservation.”

Despite the commitment of ranchers to their land, nearly half of all U.S. ranches are sold every decade and recruitment of younger generations into the ranching lifestyle has declined. Most of these once-open spaces have been lost to subdivisions and other development. Land conversion not only erodes the sense of community and cultural identity among ranchers, it also eliminates important wildlife habitat.

To keep ranches both environmentally and economically sustainable, both workshops highlighted key areas where conservation professionals can increase rancher engagement and ensure working wetlands continue to benefit both landowners and wildlife. Ranchers identified partnerships and open communications with conservation professionals and policymakers as critical to maintaining successful operations in addition to effective, long-lasting conservation practices. Central to strong partnerships is building trust and “honest people sitting around, getting over their biases, their agendas, and listening to one another,” said one rancher.

The Intermountain West Joint Venture has a long history of working alongside landowners and conservationists and has become trusted in the region. Their connections, experiences, and on-the-ground work proved valuable in executing the research. As a result, Dayer and Sketch were better able to understand ranchers’ experiences and perspectives. The joint venture is also now playing a critical role in ensuring the results of this study are used.

“This research is ground-breaking in that it helps conservation professionals understand the social context of agricultural irrigation decision-making in the West,” said Dave Smith, Intermountain West Joint Venture coordinator. “The findings will enable the conservation community to increasingly support agricultural irrigators in continuing to provide vital habitat for wetland-dependent birds on working lands.”

Listening turned out to be an effective conservation tool, and Dayer and Sketch hope that this work continues to change how conservation professionals and ranchers work together.

—   Written by Rasha Aridi

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Climate Change Global Change News Sustainable Agriculture

To Slow Global Warming, U.N. Warns Agriculture Must Change

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Header image: Large swaths of forest have been cut down in Brazil in recent decades to make room for farming. Deforestation contributes to global warming, and reversing it will be necessary to avoid catastrophic climate change. Image credit: Andre Penner/AP.

 

From NPRAugust 8, 2019

Humans must drastically alter food production to prevent the most catastrophic effects of global warming, according to a new report from the United Nations panel on climate change.

The panel of scientists looked at the climate change effects of agriculture, deforestation and other land use, such as harvesting peat and managing grasslands and wetlands. Together, those activities generate about a third of human greenhouse gas emissions, including more than 40% of methane.

That’s important because methane is particularly good at trapping heat in the atmosphere. And the problem is getting more severe.

“Emissions from agricultural production are projected to increase,” the authors warn. “Delaying action” on reducing greenhouse gas emissions, they continue, “could result in some irreversible impacts on some ecosystems.”

This is the latest in a series of reports from the U.N.’s Intergovernmental Panel on Climate Change. The new report adds weight and detail to a warning put out by the same panel of scientists last fall, in which they sounded the alarm about the inadequacy of the pledges countries have made so far to reduce greenhouse gas emissions.

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Researchers publish new study on citrus greening disease

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From VT NewsJuly 11, 2019

Orange juice is a staple on many breakfast tables, but the future availability of citrus products is threatened by the global spread of huanglongbing (HLB), also known as citrus greening disease.

Knowing which environmental conditions are suitable for disease transmission and where those conditions occur is vital for crop management. A new study published by researchers at Virginia Tech with a team of international researchers in Journal of Applied Ecology investigates the thermal suitability for transmission of citrus greening with implications for surveillance and prevention.

The bacterium responsible for causing citrus greening prevents the formation of commercially viable fruit and is transmitted by an insect called the Asian citrus psyllid.

Both the pathogen and the insect vector have been spreading in recent years, devastating regions famous for high citrus production and threatening the future of the citrus industry. As citrus greening becomes an increasing threat to growers worldwide, the future of the industry may depend on identifying locations that do not have a high risk of production collapse.

Led by Rachel Taylor of the Animal and Plant Health Agency (APHA) in the United Kingdom, the team of researchers behind the study created a mathematical model to calculate how suitability for citrus greening transmission depends on temperature and mapped how this translates into areas where the disease could become established.

“Our suitability maps can be used to underpin risk-based surveillance and prevention to ensure resources to fight citrus greening are applied in the best locations,” Taylor said.

Disease transmission dynamics are largely dependent on temperature, both for successful replication of the HLB bacterium and survival of psyllid vectors. The model was built with data collected under laboratory conditions, directly incorporating the effects and limitations of environmental temperature into the estimate of suitability.

“Although the approach is fairly simple, we’ve shown in other systems that we can make surprisingly accurate predictions,” said coauthor Leah Johnson, assistant professor in Department of Statistics in the College of Science at Virginia Tech.

The model predicts that successful infection of host plants can occur between 16˚C and 33˚C, with peak transmission at around 25˚C. Using this information of the temperature limits for disease spread, the authors were able to make maps of global suitability, showing how many months of the year have temperature conditions that would place citrus groves at risk for infection with HLB. Perhaps unsurprisingly, many regions with nearly year-round suitability for citrus greening include some of the citrus-growing areas hit hardest by the disease, including Brazil and South-East Asia.

This work provides critical information for citrus production and crop management moving into the future. “Translating these models into maps helps communicate our findings to citrus stakeholders and creates a baseline for thinking about potential climate change impacts,” said coauthor Sadie Ryan, from the University of Florida.

Some locations identified by the model as suitable for transmission for half of the year, such as California and the Iberian Peninsula, are currently free of citrus greening. In these areas known for high citrus production, preventing the establishment of the disease vector through increased surveillance and management may help prevent the devastating effects that citrus greening has had on other growers.

“We hope that this model can be a useful planning tool for growers and policymakers dealing with HLB,” said Johnson, who is also an affiliated faculty member of the Global Change Center, an arm of the Fralin Life Sciences Institute at Virginia Tech.

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Changing climate forces desperate Guatemalans to migrate

Eduardo Méndez López lifts his gaze to the sky, hoping to see clouds laden with rain.

After months of subsisting almost exclusively on plain corn tortillas and salt, his eyes and cheeks appear sunken in, his skin stretched thin over bone. The majority of his neighbors look the same.

It’s the height of rainy season in Guatemala, but in the village of Conacaste, Chiquimula, the rains came months too late, then stopped altogether. Méndez López’s crops shriveled and died before producing a single ear of corn. Now, with a dwindling supply of food, and no source of income, he’s wondering how he’ll be able to feed his six young children.

“This is the worst drought we’ve ever had,” says Méndez López, toeing the parched earth with the tip of his boot. “We’ve lost absolutely everything. If things don’t improve, we’ll be forced to migrate somewhere else. We can’t go on like this.”

Guatemala is consistently listed among the world’s 10 most vulnerable nations to the effects of climate change. Increasingly erratic climate patterns have produced year after year of failed harvests and dwindling work opportunities across the country, forcing more and more people like Méndez López to consider migration in a last-ditch effort to escape skyrocketing levels of food insecurity and poverty.

During the past decade, an average of 24 million people each year were displaced by weather events around the world, and although it’s unclear how many of those displacements can be attributed to human-caused climate change, experts expect this number to continue to rise.

Increasingly, those displaced seek to relocate in other countries as “climate change refugees,” but there’s a problem: the 1951 Refugee Convention, which defines the rights of displaced people, provides a list of things people must be fleeing from in order to be granted asylum or refuge. Climate change isn’t on the list.

Data from Customs and Border Patrol show a massive increase in the number of Guatemalan migrants, particularly families and unaccompanied minors, intercepted at the U.S. border starting in 2014. It’s not a coincidence that the leap coincides with the onset of severe El Niño-related drought conditions in Central America’s Dry Corridor, which stretches through Guatemala, Honduras, and El Salvador.

Seeking to understand the upward trend in emigration from this region, a major inter-agency study led by the UN World Food Programme (WFP) interviewed families from key districts in the Dry Corridor about the pressures that are forcing them to leave. The main “push factor” identified was not violence, but drought and its consequences: no food, no money, and no work.

Their findings suggest a clear relation between climate variability, food insecurity, and migration, and provide a frightening window into what’s to come as we begin to see the real-world effects of climate change around the world.

A country in crisis?

To Diego Recalde, director of the UN Food and Agriculture Organization (FAO) in Guatemala, the current trend of mass migration in response to food insecurity and drought is a clear indication that the country has been barreling towards a climate change-induced crisis for some time.

Adverse climate conditions in Guatemala affect food security by reducing agricultural production in both commercial as well as subsistence farming, limiting the agricultural work opportunities that make up a significant portion of the national economy as well. Rising poverty rates and plunging social indicators paint a bleak outlook for the country, which has the fourth-highest level of chronic malnutrition in the world, and the highest in Latin America. According to the World Food Programme, nearly 50 percent of children under five years old are considered chronically malnourished in Guatemala, a measure that peaks to 90 percent or higher in many rural areas.

For subsistence farmers like Méndez López who rely on rainfall to produce the food they eat, it only takes a few months of erratic climate patterns to limit or completely impair their ability to put food on their families’ tables. With increases in the frequency and severity of droughts, Recalde worries that for the most vulnerable sectors of the population, the worst is yet to come.

“This is a national disaster,” he says. “There should be red flags going off all over the place.”

Scientists attribute the unusually severe droughts starting in 2014 that have sped up the exodus of families heading north to effects from El Niño, part of a natural climate cycle known as the El Niño-Southern Oscillation (ENSO), which causes swings between cooler and wetter, and hotter and drier periods around the globe.

This type of natural climate variability has affected Guatemala and other Central American countries for hundreds, if not thousands, of years, even playing a role in the mega-droughts that accompanied the collapse of the ancient Mayan civilization.

“Climate has always had a very strong variability here,” explains Edwin Castellanos, director of the Center for the Study of the Environment and Biodiversity at the Universidad del Valle in Guatemala. “The problem now is that El Niño and La Niña have become both stronger, more intense, but also more erratic.”

Climate change to blame?

While it may seem as if climate change is driving these wide swings in weather, it’s important to make a distinction between periods of climate variability, and the long-term shifts of climate change. The latter quickly becomes a matter of politics, international negotiations, and claims for loss and damages under the Paris Agreement.

While scientists know that El Niño contributes to increases in global temperatures, it is still unclear whether human-induced climate change is causing El Niño events to intensify and occur more frequently.

“By definition, climate change should usually be modeled in 50-year terms. But what the models are showing should be happening in 2050 is already happening now,” says Castellanos, referring to alterations in rainfall patterns and aridity levels across Guatemala. “So the question is, is this variability higher than usual?”

A lack of historical meteorological data makes demonstrating a clear connection between human-induced climate change and increased climate variability difficult. Nevertheless, Castellanos, who is among Guatemala’s leading experts on climate change, finds it hard to ignore the transformations he’s experienced first-hand throughout his life.

“We still have some ways to go before we can conclude scientifically that what we’re seeing now is outside the normal. But if you go out to the field and ask anybody if this is normal, everybody says no.”

Whether attributed to El Niño events or to global warming, what’s happening in Guatemala paints a vivid picture of the vulnerabilities that are exposed when societies don’t have the capacities to cope with and adapt to a changing climate.

Vulnerable economy, vulnerable villages

In previous years, families affected by a bad year’s harvest would seek work as day laborers on commercial farms, making enough to purchase staples like corn and beans. But this year, there’s no work to be found. Even well-established commercial agriculture ventures have been affected by this year’s drought, foreshadowing the bigger problems that will arise as the climate-sensitive crops that make up the bulk of Guatemala’s key agricultural exports (and domestic job market) suffer the effects of rising temperatures and increasingly frequent climate-related disasters.

Today, towards the end of yet another “rainy season” that brought no rain, many rural communities seem trapped in a dizzying vortex of catastrophe. Years of erratic weather, failed harvests, and a chronic lack of employment opportunities have slowly chipped away at the strategies Guatemalan families have used successfully to cope with one or two years of successive droughts and crop failures. But now, entire villages seem to be collapsing from the inside out as more and more communities become stranded, hours away from the nearest town, with no food, no work, and no way to seek help.

“There’s no transportation. People have run out of money to pay the fare, so cars don’t even come here anymore,” says José René Súchite Ramos of El Potrerito, Chiquimula. “We want to leave but we can’t.”

Many describe the current situation as the most desperate they’ve ever faced. In the settlement of Plan de Jocote, Chiquimula, Gloria Díaz’s crops didn’t produce a single grain of corn.

“Here, 95 percent of us have been affected by droughts that started in 2014, but this year, we lost absolutely everything, even the seeds,” Díaz says. “Now we’re stuck with no way out. We can’t plant the second harvest, and we’ve run out of the resources we had to be able to eat.”

Like many others in her community, Díaz has taken to foraging the countryside for wild malanga roots in attempts to stave off starvation, but they’ve become scarce too. Without a reliable source of potable water, outbreaks of diarrhea and skin rashes have become increasingly common, especially among children.

In the neighboring department of El Progreso, Sister Edna Morales spends many days riding a donkey through the parched mountains surrounding the small town of San Agustín Acasaguastlán, looking for malnourished children whose families are too poor and weak to seek help. These days, the nutritional feeding center she runs remains at full capacity.

“These children have so many health problems that are compounded by severe, chronic malnutrition. Their hair is falling out, they’re unable to walk,” she says. “Living here, you hear about many cases of children dying from malnutrition. They don’t even get reported to the news.”

It’s not just children who are suffering the consequences of severe food shortages and crushing poverty. In Chiquimula, Díaz displays a recent group photo of the community organization over which she presides, the Association of Progressive Women of Plan de Jocote. One by one, she points at women who have died, or are slowly dying, from preventable causes made untreatable by extreme poverty and malnutrition.

When subsistence farmers lose their harvests, they’re forced to purchase the staples they typically grow—often at highly inflated prices—to feed their families. Without a source of income, this additional expense leaves many without the economic resources for other basic necessities such as medications or transportation to doctors.

As hunger pushes desperate parents to resort to extreme measures in order to feed their families, robberies and violent assaults have skyrocketed.

“People from our own community are starting to go out and rob people, because it’s their only option,” says Marco Antonio Vásquez, a community leader of the village of El Ingeniero in Chiquimula.

Mass migrations

Many consider migration to be their last option, one that comes with tremendous risks to their personal security and unthinkable consequences if they’re unable to complete the journey.

“A lot of people are leaving, many more than ever before,” says Vásquez. “Towards the U.S. in search of a new future, taking their small children with them because they feel so pressured to risk it all.”

Those with homes or small plots of land use them as collateral to pay human smugglers known as “coyotes” between $10,000 and $15,000 USD in exchange for three chances to cross the border into the U.S. But families from the poorest regions of the country are often forced to choose the option with the least guarantees and the highest risks—going alone, often with small children in tow.

In Guatemala City, two to three planes touch down at the Guatemalan Air Force Base every day, each one carrying around 150 Guatemalan citizens who have been deported or intercepted as they attempted to cross into the United States. Many were fleeing hunger and extreme poverty in their home country.

Ernesto, who asked his name to be changed, looked weary as he waited in line to claim the small bag containing belongings that had been taken from him when he was intercepted at the U.S. Border—his shoelaces, a battered cell phone, and a small bible. His family in Guatemala had put their home and livelihood on the line, hoping he could make it across to find work in the U.S., which would allow him to support his family back home. This was the second time he had been deported.

“I have one chance left. If I don’t make it, we will really be in trouble.”

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Interdisciplinary REEU program studies real world issues at the “Confluence of Water and Society”

[vc_row][vc_column][vc_column_text]Postcard from Leigh-Anne Krometis

October 9, 2018[/vc_column_text][vc_separator][vc_column_text]If you live in the New River Valley, chances are that your local news (and perhaps your social media feeds) have included mention of the controversial Mountain Valley Pipeline (MVP) construction, which began in Spring 2018. Debates over the MVP bring up a wide variety of tangled issues, ranging from economic cost-benefits to property rights and individual freedom to environmental quality and the role of regulators.

This summer also marked the first year of our USDA-funded REEU: “Confluence of Water and Society” summer program. The USDA REEU program – Research and Extension Experiences for Undergraduates – is similar to NSF’s well-known summer REU programs, which aim to provide undergraduates with hands-on research experience and to encourage these promising students to consider graduate degrees and research careers. The second “E” in the REEU program – extension – indicates that undergraduates in these programs are expected to gain not only research skills, but also experience directly communicating with stakeholders. Their research is supposed to directly relate to community needs and concerns, and students need to gain experience communicating with these communities. Given the complexity of the issues surrounding MVP, the numerous questions local communities have asked various Virginia Tech faculty about potential environmental impacts, and its location essentially in Virginia Tech’s backyard, this issue proved a compelling and challenging framework for our interdisciplinary research efforts associated with the REEU this summer.[/vc_column_text][vc_gallery type=”image_grid” images=”25880,25878,25879,25877″ img_size=”300×200″][vc_column_text]Along with my co-program directors, Cully Hession (BSE), Brian Badgley (SPES and GCC), and Amber Vallotton (HORT), we immersed our eight students in the unique local culture and hydrology of the southern Appalachians during their nine-week stay in Blacksburg. Students learned about Appalachian history and culture from Dr. Theresa Burriss, the head of Appalachian Studies at Radford University, visited an active natural gas extraction site in Buchanan County with Dr. Nino Ripepi from Virginia Tech’s Mining and Mineral Engineering Department, visited local farmers dependent on water resources in the New River Valley, and experienced the reality of karst geology firsthand during a local caving trip with the Department of Environmental Quality.

The goal of these speakers and trips was not simply for students to “download” background information, but to provide a real-time opportunity to start conversations with – and listen to! – local stakeholders with a variety of perspectives. Sustainable solutions to difficult issues in the food-energy-water sectors require an ability to be comfortable in the midst of complexity and understanding even when emotions run high.

Although our formal analysis of student outcomes is ongoing, early indicators suggest that students appreciated the opportunity to step out of the laboratory (or away from the computer) to talk to members of the local community, and that these conversations added nuance to their understanding of the MVP issue. Several intend to pursue careers that directly involve some science communication.

Our eight students spent their summer working collaboratively on three intersecting research projects focused on environmental and social aspects of the MVP, aided by a similarly diverse set of faculty mentors, including Global Change affiliates Bryan Brown, Julie Shortridge, Erin Hotchkiss, and Ryan Stewart, and IGC PhD student Lauren Wind. Student project specifics and perspectives on the summer program were recently covered by VT News. This specific REEU will continue for another two years, focusing on a different multi-faceted freshwater issue each summer. Send interested undergraduates our way![/vc_column_text][vc_separator style=”shadow”][/vc_column][/vc_row][vc_row][vc_column][vc_column_text]Written by Leigh-Anne Krometis

Biological Systems Engineering

krometis@vt.edu[/vc_column_text][/vc_column][/vc_row][vc_row][vc_column][vc_separator][/vc_column][/vc_row][vc_row][vc_column][/vc_column][/vc_row]

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12th Annual Sustainability Week: Sept. 15-23

From VT News

The 12th annual Sustainability Week, an interactive partnership among Virginia Tech Office of Sustainability, the Town of Blacksburg, and Sustainable Blacksburg that highlights sustainability efforts in the community and on campus, will launch on Saturday, Sept. 15.

More than 20 events are scheduled throughout the week of Sept. 15-23. On Wednesday, Sept. 19, the Active Commute Celebration, hosted by Virginia Tech Parking and Transportation, will recognize faculty, staff, and students who choose to bike, bus, walk, carpool, or vanpool to campus.

Commuters are encouraged to take advantage of a mobile bike repair station, along with free bagels and coffee. There will also be a number of organizations at the event to answer questions about active commuting, including the Alternative Transportation Department, Blacksburg Transit, Virginia Tech Police, Roam New River Valley, Hokie Wellness, Virginia Tech Mountain Biking Club, and more.

Some of the other events being held during Sustainability Week 2018 on campus and in the community include:

·         Homefield Farm Tour at Kentland Farm

·         Yoga at Hahn Horticulture Garden

·         Campus Energy Update

·         Sustainability Skills for Daily Living Workshop

·         Blacksburg Bike Parade and family-friendly movie at The Lyric Theatre

·         Invasive species removal service project in the woods surrounding Lane Stadium

Click here to view the full schedule of Sustainability Week 2018 events.

In 2017, Virginia Tech, the Town of Blacksburg, and Sustainable Blacksburg were honored with the Silver Governor’s Environmental Excellence Award for their role in the planning and execution of Sustainability Week.

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CONTACT:
Alexa Magdalenski
540-231-7899

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Conservation News Research Sustainable Agriculture

Natural habitat can help farmers control pests, but the benefits vary widely across the globe

From VT News

Songbirds and coffee farms in Central America. Ladybugs and soybean fields in the Midwest.

These are well-known, win-win stories that demonstrate how conserving natural habitat can benefit farmers.

But an international team of authors, including Megan O’Rourke, assistant professor in the Virginia Tech School of Plant and Environmental Sciences, found that natural habitat surrounding farm fields is not always an effective pest-control tool for farmers worldwide. The team’s analysis was published Aug. 2 in the journal PNAS.

“For the last 20 years, many scientists have suggested that you will have fewer insect pests on your farm if the farm is surrounded by natural habitats, such as forests,” said O’Rourke.

To test that assumption, lead authors Daniel Karp, an assistant professor in the UC Davis Department of Wildlife, Fish and Conservation Biology, and Rebecca Chaplin-Kramer, of the Natural Capital Project at Stanford University, organized an international team of ecologists, economists, and practitioners at the National Socio-Environmental Synthesis Center. Together, they compiled the largest pest-control dataset of its kind, encompassing 132 studies from more than 6,700 sites in 31 countries worldwide — from California farmlands to tropical cacao plantations and European wheat fields.

Surprisingly, the results were highly variable across the globe. While many of the studies showed surrounding natural habitat does indeed help farmers control pests, just as many showed negative effects on crop yields. The analysis indicates that there are no one-size-fits-all recommendations for growers about natural habitat and pests.

“Natural habitats support many services that can help farmers and society, such as pollination and wildlife conservation, but we want to be clear about when farmers should or should not expect the land around their farms to affect pest management,” said O’Rourke, who works within the College of Agriculture and Life Sciences and the Fralin Life Science Institute. “Diverse landscapes are not a silver bullet for pest control but should be considered as part of a holistic and sustainable pest management plan.”

Critically, Karp and his team of 153 co-authors have made their pest-control database publicly available, opening the door for further scientific insights. Karp hopes the database will grow over time and help inform predictive models about when surrounding habitat helps control pests and when it does not.

The research was supported by the National Socio-Environmental Synthesis Center and the National Science Foundation.

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