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Warmer winters, early springs…melting ice leads to more food insecurity

From NPR

Story by Clare Leschin-Hoar

There was a time when Sandra Gologergen’s freezer never ran out. Packed with traditional Inuit foods like whale, walrus, seal and fish, her freezer has been an essential lifeline, ensuring her husband, three kids and grandson make it through the long harsh winters of Savoonga, Alaska.

“Then that changed,” she says.

Warmer winters and changing ice conditions meant hunters were unable to bag the Pacific walrus the Savoonga residents traditionally relied on as a key food source. Three years ago, the situation became so dire, the governor declared the island an economic disaster to help loosen assistance funds.

“The animals are there, but the ice and weather conditions (that hunters need to harvest the animals) have changed,” says Gologergen. “I’m not the only one whose freezer has run out.”

Savoonga is a small community of around 650 residents that sits on the northern edge of St. Lawrence Island, 164 miles west of Nome, in the Bering Sea. It is among the first U.S. communities to experience the effects of climate change first hand.

Warmer winters, early springs, a shift in typical storm patterns has hampered the ability of Native Alaskan families like Gologergen’s to harvest the subsistence foods they’ve relied on for more than a millennium. The debate here isn’t over whether or not climate change is happening. For these rural communities, the looming question is whether they can continue to survive there.

It’s a similar story in tiny rural Buckland, Alaska, with a population of nearly 420. Here, worries over walrus harvests are swapped for concerns about declining caribou herds. In April, the state closed caribou hunting there to non-locals.

“Right now, a lot of people are out of caribou meat,” says Percy Ballot Sr. “Caribou used to migrate and winter in our area. Now some of the herd stays where they are, some move to the west and east. We’ve been trying to go out and look for some and haven’t seen any.”

According to Feeding America’s latest Map the Meal Gap, food insecurity rates for the state hover at 14.4 percent, just above the national rate of 14 percent. But what makes the situation in Alaska different than in many other states is its residents’ dependence on subsistence hunting, especially those who live in remote communities. In 2012, thestate estimated that rural residents harvested a whopping 295 pounds of wild foods per person — including fish, whale, seals, sea lions, moose, caribou, birds and wild plants from berries to kelp.

Food stamp benefits are tiered in Alaska, and rural residents can get as much as$1,227 a month for a family of four, but that assistance doesn’t go far at their small local grocers, where expensive transportation costs translate to sobering sticker prices. Milk can routinely cost $10 a gallon or more; a container of juice can run $13; a loaf of bread can cost $6, and a box of cereal can run $8.

It’s a dilemma Cara Durr, director of public engagement for Food Bank of Alaska, a Feeding America member, has seen first-hand.

“In places like Savoonga, suddenly you’ve got an 80 percent reduction in the amount of food you’re used to having. There aren’t a lot of jobs on these islands, and to say to people they now have to go to the grocery store — it’s just out of reach for a lot of these people. And there are hundreds of communities like this,” Durr says. “You can’t just snap your fingers and send more food. It’s incredibly expensive to ship food out there.”

The issue is more complex than just caloric intake, purchasing power and nutrition. There’s a strong cultural factor at play as well. In a report released in December, the Inuit Circumpolar Council and its Food Security Advisory Committee focused on how traditional foods will be impacted by policy making.

READ THE FULL STORY AT NPR

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Conservation News

Ashley Dayer shows that citizen scientists’ data can be used for bird conservation

Dr. Ashley Dayer is a conservation social scientist and new faculty hire in the Department of Fish and Wildlife Conservation at Virginia Tech. Dr. Dayer is also a new affiliated faculty member in the Global Change Center.  Her most recent publication in the journal Biological Conservation was highlighted in the following article on Cornell’s All About Birds website.


From All About Birds:

Save an endangered species, protect eagles from wind turbines, expand protected lands, or even outlaw drones from bothering wildlife. It doesn’t matter who you are, you can help make conservation actions happen—as long as you have ready access to data.

That’s what researchers discovered when they investigated how people are using data from the Cornell Lab’s eBird project to achieve conservation goals. It turns out that when citizen science projects make their data publicly available, as eBird does, they help bridge the so-called “knowledge-to-action gap” that can plague conservation.

Since 2002, eBird has received more than 300 million observations—70 million of those in 2015 alone. At the eBird website, you can view that data as maps or other visualizations and browse by species, location, and date. For more formal analyses, the entire data set is freely available to download, and more than 2,100 people from all over the world have downloaded it.

A research team from the Cornell Lab sent out surveys to users of the full data set to learn how people used the data. They documented 159 examples of people or groups that used eBird for conservation action. A third of all responses were from private citizens rather than academics, indicating that citizen science projects can extend a person’s role from data collector to data user. The team published their findings in the journal Biological Conservation.

According to their results, it turns out that people are using eBird data in various ways; from researching and monitoring conservation areas and species, to conservation planning, habitat and species management and protection, and even in making policy decisions and laws. And they’re using it all over the world. We dove into the paper and pulled out these top 9 examples of how and where the data were used to create real on-the-ground conservation action:

  1. Helped develop the IUCN Red List of Chile’s threatened birds. When there is little information on a species, little can be done to help protect it. The Chilean Birding Network used eBird to get occurrence information on seven data-deficient bird species, allowing their conservation status to be assessed for the IUCN Red List.
  2. Instrumental in listing the rufa Red Knot as a threatened subspecies, U.S. The rufa subspecies of the Red Knot migrates up to 20,000 miles a year between Tierra del Fuego and the Arctic, stopping in places like Delaware Bay to feast on abundant horseshoe crab eggs. When increased harvests of horseshoe crabs caused rufa Red Knot populations to crash in the 2000s, eBird reports helped fill gaps in data about the bird’s numbers all across its migratory route. The U.S. Fish and Wildlife Service decided to list the rufa Red Knot as Threatened under the Endangered Species Act in 2013.
  3. Helped determine species distributions for poorly known, rare species, Philippines. Three species of ground-warblers—one only just discovered in 2013—are so secretive that they’re only known from a few dozen locations. A group of researchers used eBird and museum data to model the ranges of the species. The results highlighted the need for land protection in currently unprotected parts of the country.
  4. Expanded a Ramsar site in the Fraser River Delta, British Columbia, Canada. The Ramsar Convention, also known as the Convention on Wetlands, helps secure protection for wetlands deemed internationally important. A review of the Alaksen Ramsar site in British Columbia used eBird data on species abundance, finding it is a major wintering and migratory stopover area for gulls, seaducks, and shorebirds. As a result, the area was designated as a Wetland of International Importance, and increased 40-fold in size to become the 51,000-acre Fraser River Delta Ramsar site.

Read the full article here.

Reference:

Sullivan, B.L., T. Phillips, A.A. Dayer, C.L. Wood, A. Farnsworth, M.J. Iliff, I.J. Davies, A. Wiggins, D. Fink, W.M. Hochachka, A.D. Rodewald, K.V. Rosenberg, R. Bonney, and S. Kelling. 2016. Using open access observational data for conservation action: A case study for birdsBiological Conservation. doi:10.1016/j.biocon.2016.04.031

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Interfaces of Global Change IGEP Student Spotlight Water

Tony Timpano’s work in water quality research is at the interface of science and policy

Story by Cassandra Hockman
Fralin Life Science Institute

Along the Mississippi River there is one species many people who live there know well. Mayflies. These long, dragonfly-looking creatures live on the bottom of the river and burrow in the muck and sand. They grow and develop there before they come to the surface to fly away and mate.

When they fly away, they do it en masse.

“They come out in huge swarms so big they show up on Doppler radar,” said Tony Timpano, a doctoral candidate at Virginia Tech and an Interfaces of Global Change Fellow studying how insect communities are affected by water quality. “The sky is blackened, and you need your windshield wipers to drive. Since they only live about 24 hours, they then die and have to be shoveled away like snow.”

bugs
Common aquatic insects

Small invertebrates like the mayfly live in all kinds of freshwater bodies across the globe. In the U.S., many species prefer fast-flowing or slow-moving streams and lakes. But no matter which freshwater body these insects prefer, their sheer abundance and the communities they make up can teach scientists like Tony a lot about the water in which they live.

“Many insects, just like the mayfly, are major players in the aquatic community,” said Tony, who is also a doctoral scholar in the Institute for Critical Technology and Applied Science at Virginia Tech. “Since every freshwater body has some community of these insects in some combination, we can look at the diversity and abundance of species to give us an idea about the water quality.”

In states like Virginia and West Virginia, many freshwater insect communities reflect the water quality as it’s influenced by local industries, such as coal mining. Tony’s main goal as a scientist is to understand how freshwater insects are affected by water with high amounts of salt runoff from this mining.

One way in which coal mining affects water quality is through the process of mountaintop mining. At the top of the mountain, miners work to get to the coal under the surface. The rock covering the coal gets blasted off into rubble. When this happens, Tony explained, the rock material is typically placed in freshwater stream areas known as valley or hollow fills.

“This material sits for geologic time underground before it’s exposed to water and air,” he said. “So minerals start dissolving and flow right into the streams where they increase the salt concentrations of streams. They then start becoming saltier and saltier.”

This issue of salinization – when increased amounts of dissolved salts enter freshwater – is a significant portion of Tony’s dissertation research, and was the subject of his recent publication in the journal Science with stakeholders from regulatory agencies and other universities around the globe.

In particular, the paper recommended ways that people can address salt pollution to protect freshwater ecosystems, including the insect biodiversity that Tony studies. Essentially, he explained, the cleaner the water, the more diverse in number and abundance the species are in the water.

Beginning with trout fly-fishing, Tony’s interest in insects and aquatic biodiversity were further sparked as an undergraduate at Virginia Tech. He took an entomology course and learned even more about aquatic life, including how to identify the diversity in freshwater, how different organisms behave, and how they are affected by surrounding aquatic ecosystems. He also learned the application of using insects to examine stream health.

“This was my first exposure to applied entomology,” he recounted.

After earning his bachelor’s degree, he worked as an environmental consultant where he applied the bio-monitoring science he had learned, introducing him to how science can inform policy. In particular, this first hand experience taught him how water quality standards were measured by the U.S. Environmental Protection Agency.

But, after working in this field, Tony decided he wanted to further the scientific knowledge that could better inform the science behind how these standards are made.

So Tony went back to school. His interests in aquatic life and water quality continued for his master’s degree work at Virginia Tech, a joint program between civil and environmental engineering in the College of Engineering and crop and soil sciences in the College of Agriculture and Life Sciences. His research was then funded in part by the Virginia Department of Environmental Quality and the Virginia Department of Mines, Minerals, and Energy, which have jurisdiction over clean water in the coal mining regions. His data regarding salinity’s affect on aquatic life was incorporated into guidance used by these agencies for issuing mine permits in the state of Virginia.

Tony’s master’s work was noticed by the U.S. Office of Surface Mining Reclamation and Enforcement (OSMRE), which subsequently funded him as a research associate for the Virginia Water Resources Research Center at Virginia Tech. In that role, he expanded his study of salt pollution to streams in West Virginia. That work established the foundation for his doctoral research, also funded by OSMRE, which incorporates seasonal patterns of water quality to better understand the complex effects of salinization on aquatic life.

With his longtime interest in bugs (including a certification in taxonomy), Tony now works to share his doctoral research to inform sound policy decisions made by regulatory agencies, including the U.S. EPA. His dissertation specifically focuses on the salt content in freshwater streams as a result of coal mining. In addition, he’s developing models for water quality relative to these salt concentrations so they can be used as predictors of biological aquatic diversity.

He’s also more broadly interested in how these biological types of data can be used to address other issues in addition to the influences of coal mining. This includes improving the precision and quality of science surrounding bio-monitoring for salt, sediment, and nutrient pollution, and, ultimately, how aquatic insects are affected by any variety of human disturbances.

“I’m very focused on applying science,” he said. “While pure biology is interesting, I get really jazzed about the applied stuff because you know these organisms can reflect what’s going on in the water. We need to know what’s causing changes so we can make management decisions to achieve the goals we want.”

Even though Tony works to do good science that will inform policy, he still likes to spend time with what drew him to this research in the first place: the insects.

“I still enjoy looking under the scope,” he said. “I love getting out in the streams, collecting invertebrates, bringing them back, getting on the scope, and doing the identification.”

There’s no question about it: Tony Timpano is truly a ‘bug guy.’

See the full story and interview here

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Categories
Interfaces of Global Change IGEP News

The Global Change Center welcomes 10 new Interfaces of Global Change Ph.D. fellows

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The IGC IGEP welcomes:

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The Interfaces of Global Change Interdisciplinary Graduate Education Program will begin its fourth year with a banner recruitment class of ten new Ph.D. students!

A private reception to welcome the incoming class of 2016-17 was held on August 24, 2016, 4:00- 6:00 p.m., at the Peggy Lee Hahn Garden Pavilion on Virginia Tech’s campus.

Welcome aboard, Everyone!

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John Jelesko and David Haak are mapping the geolocation of Poison Ivy using the Appalachian Trail

From VT News

July 18, 2016

John Jelesko was hiking along the Appalachian Trail when he saw his quarry — one which other hikers would think of as their nemesis.

“Careful,” he said as he and David Haak stopped at a white blaze marker and pulled out his bag of scientific tricks. Though many people want to avoid poison ivy, the thick wall of poison ivy plants bordering the trail is just what the team of Virginia Tech researchers were after.

While scientists know about poison ivy’s ability to cause an all-consuming itch and even spawn terrible rashes, little is known about the plant itself or how it grows.

Jelesko and his team are out to change that.

Jelesko, associate professor of plant pathology, physiology, and weed science in the College of Agriculture and Life Sciences, Haak, an assistant professor in the same department, and Lynn Resler, an associate professor in the College of Natural Resources and Environment, are mapping and surveying the growth patterns of poison ivy where it lives in order to glean more information about how it grows and its genetic make up.

The trio recently set out on the Appalachian Trail to perform some preliminary research about the geolocation of the plant as well as collect DNA samples starting near McAfee’s Knob in Southwest Virginia.

“In many ways this plant is the familiar stranger,” he said, “We’re all told ‘leaves of three, let it be,’ and that’s all very sensible, but beyond that there is remarkably little specific scientific knowledge about poison ivy.”

In order to collect geolocational data of the plant the team used a smartphone app that enables users to tag where they find poison ivy. Jelesko, a Fralin Life Science Institute-affiliated faculty member, and his team stopped at every “white blaze” marker along a 60-mile segment of the Appalachian Trail to catalogue and tag samples. The project was funded by a College of Agriculture and Life Sciences Proposal Development grant.

Though poison ivy is native to the United States, it’s known as a neo-invasive species because it tends to overtake landscapes. The plant has an uncanny knack to cozy up to human populations but it is also found in forests.

“Poison ivy has an ability to cohabitate with humans and we think that those plants will show different signatures of adaptions than those found in a natural forest, its native habitat,” said Haak.

One aspect of the plant’s behavior that has been proven is poison ivy’s affinity for greenhouse gases. A 2006 study showed that as the planet warms, poison ivy is predicted to grow faster, bigger, and more allergenic, causing much more serious reactions to urushiol – the rash-causing chemical found in the plant’s oils. Urushiol is extremely potent. Only one nanogram is needed to cause a rash, and the oil can remain active on dead plants up to five years.

“Water, light, and carbon dioxide are poison ivy’s bread and butter,” said Jelesko, who originally became interested in studying poison ivy after a day of yard work and a bout with the plant that left him with a nasty rash.

Jelesko hopes to eventually hike the entire Appalachian Trail and extensively catalogue the poison ivy samples he finds along the way, as well as enlist the help of citizen scientists in geotagging poison ivy populations.

Though he didn’t experience any itching on this research trip, he did pick up a nickname by fellow hikers, as is custom on the AT.

The name?

“Rash.”

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Written by Amy Loeffler

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Uncategorized

Global Change researchers Scott Davies and Kendra Sewall publish in Biology Letters

From VT News:

No need to head to the movie theater or download the video game app: Angry Birds can be found right in your backyard this summer — if you live in the suburbs, that is.

Virginia Tech researchers recently found in Southwest Virginia that birds that live in suburban areas exhibit significantly higher levels of territorial aggression than their country counterparts. The results were published in Biology Letters June 22.

“A possible reason for this is that these birds have less space but better resources to defend,” said Scott Davies, a biological sciences postdoctoral associate in the College of Science.  “Living near humans provides better food and shelter, but it also means more competition for these limited resources.”

Davies and co-author Kendra Sewall, an assistant professor of biological sciences in the College of Science, measured territorial aggression in 35 urban and 38 rural male song sparrows at three rural and three urban sites in the New River Valley during the spring of 2015.

The Virginia Tech and Radford University campuses served as the (sub)urban sites due to their levels of human impact.  Rural sites included Kentland Farm and Heritage Park.  In these settings, the researchers played a recording of a male song sparrow and observed how the territory-holding birds responded to a simulated intrusion from a neighbor.

Campus birds showed a higher level of aggression: they approached and remained near the speaker, flapped their wings furiously, engaged in loud singing, and then began to produce “soft song” — a term that researchers use to describe the quiet, garbled noise that a bird makes that is predictive of an impending attack.

Though rural birds still responded to a song intrusion, they did not respond as vigorously.

The researchers placed small leg bands on the birds to identify individuals and recorded each individual’s responses twice, several weeks apart. The suburban birds were more territorial on both occasions, showing that their increased aggression persists throughout a breeding season.

The researchers’ observations shed light on the effects of human population expansion on wildlife. The world population is projected to reach 9.6 billion by 2050, according to the United Nations, increasing by more than 2 billion people. Though many animals avoid habitats that are impacted by humans, some species can adjust and live in suburban and even urban habitats.

“This finding supports past research showing that urban birds are more aggressive in defending their territories,” said Kiki Sanford, a neurophysiologist and host of the This Week in Science and Stem Cell podcasts, who was not involved in the study. “We need to understand widespread behavioral differences between various species of urban and rural bird populations to get an idea of how urbanization will affect their survival and diversity in the future. Testosterone and population density are the usual predictors for aggression, but there are other influential factors, like increased food availability in urban environments, that need to be examined.”

Ongoing work in the Sewall lab addresses how expanding suburbanization impacts bird species, permitting them to adjust and persist despite changes in their habitat. Sewall is affiliated with the Fralin Life Science Institute and the Global Change Center at Virginia Tech.

“Predicting the impact that human population growth will have on wildlife requires studying the species that adjust and persist in human-impacted habitats,” said Sewall. “Suburban sprawl is a primary form of human habitat change and though many species can survive in our backyards, their behavior and physiology may change to cope with shifts in resources and with new disturbances.”

Story by Lindsay Key
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Song Sparrow image credit: CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=393077
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Sterling Nesbitt: Fossils show ostrich relatives lived in North America 50 million years ago

From VT News:

Exceedingly well-preserved bird fossil specimens dating 50 million years represent a new species that is a previously unknown relative of the modern-day ostrich, according to a new paper co-authored by Sterling Nesbitt of Virginia Tech’s College of Science and part of the university’s Global Change Center.

The bird fossils were found more than a decade ago, completely intact with bones, feathers, and soft tissues, in a former lake bed in Wyoming. Nesbitt cannot hide a grin as he calls the fossil a once-in-a-lifetime discovery for paleontologists. “This is among one of the earliest well-represented bird species after the age of large dinosaurs,” said Nesbitt, an assistant professor in the Department of Geosciences.

bird skull
A Lithornithid skull from the Green River Formation of Wyoming. Photo by Sterling Nesbitt.

“You can definitely appreciate how complete these fossils are,” added Nesbitt. His co-authored research paper on the remains was published in the Bulletin of the American Museum of Natural History. Some of the fossils are on display as part of the “Dinosaurs Among Us” exhibit at the New York-based history museum. Other specimens used in the study are kept by Chicago’s Field Museum of Natural History and the Wyoming Geological Survey.

The new species is named Calciavis grandei – with “calci” meaning “hard/stone,” “avis” from the Latin for bird, and “grandei” in honor of famed paleontologist Lance Grande, who has studied the fossil fish from the same ancient North American lake for decades. The bird is believed to have been roughly the size of a chicken, and, similar to chickens, was mostly ground-dwelling, flying only in short bursts to escape predators.

Nesbitt began studying the fossil in 2009 as a postdoctoral researcher at the University of Texas at Austin’s Jackson School of Geosciences under Professor Julia Clarke, who Nesbitt considers an important mentor. Clarke co-authored the paper with Nesbitt, who joined Virginia Tech’s faculty in 2014.

The work was funded by two grants from the National Science Foundation’s Earth Sciences Directorate.

Two fossils of Calciavis dating from the Eocene epoch – roughly between 56 million and 30 million years ago – were found by fossil diggers within the Green River Formation in Wyoming, a hot bed for extinct fish. “These are spectacularly preserved fossils; one is a nearly complete skeleton covered with feather remains, the others are nearly as complete and some show soft tissue remains,” said Nesbitt.

“Fossil birds are rare,” Nesbitt said, adding that as bird bones are hollow, they are far more fragile than most mammal bones, and more likely to be crushed during fossilization.

One of the fossilized birds in this rare case apparently was covered in mud soon after death. The former lake in which the fossil was found is best known for producing scores of complete fish skeleton fossils as well as other fossils, such as other birds, plants, crocodilians, turtles, bats, and mammals from an ecosystem roughly 50 million years old.

Included in the extinct group of early Palaeognathae birds, the Lithornithidae, Nesbitt and Clarke call the bird a close relative of living ostriches, kiwis, and tinamous that reside in the southern continents. After tropical forests disappeared in North America, Calciavis and other more tropical birds went extinct, said Nesbitt and Clarke.

“Relationships among species in this lineage of birds have been extremely contentious,” said Clarke. “We hope the detailed new anatomical data we provide will aid in finding a resolution to this ongoing debate.”

“The new bird shows us that the bird group that includes the largest flightless birds of today had a much wider distribution and longer evolutionary history in North America,” added Nesbitt. “Back when Calciavis was alive, it lived in a tropical environment that was rich with tropical life and this is in stark contrast to the high-desert environment in Wyoming today.”

The Calciavis skeleton will be important to interpreting new bird fossils and other fossils from the Eocene epoch that were collected decades ago. “This spectacular specimen could be a ‘keystone’ that helps interpret much of the sparse fossil of birds that once lived in North America millions of years ago,” said Nesbitt.

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Story by Steven Mackay

Categories
Conservation Interfaces of Global Change IGEP Student Spotlight

IGC Fellow, Cordie Diggins, defends her dissertation

Dr. Cordie Diggins

On June 30, 2016, Interfaces of Global Change Fellow, Cordie Diggins, successfully defended her dissertation in the Department of Fish and Wildlife Conservation at Virginia Tech.  Her seminar was titled, “Determining Habitat Associations of Virginia and Carolina Northern Flying Squirrels in the Appalachian Mountains from Bioacoustic and Telemetry Surveys”.

Dr. Diggins will start a post doctoral appointment in August with the USGS Virginia Cooperative Fish and Wildlife Research Unit.  She will be studying the federally endangered spruce-fir moss spider, as well as continuing work on the federally endangered Carolina northern flying squirrel.

Well done, and congratulations, Cordie!

 

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Related Stories:

Can a new mapping model save this endangered flying squirrel?

Cordie Diggins Research featured in Nature Conservancy Magazine

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