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MSU doctoral student awarded NSF fellowship for ecosystem and wildfire research

in News
Outlaw Partnersby Outlaw Partners
July 16, 2016

By Denise Hoepfner MSU News Service

BOZEMAN – Kristen Emmett, a student in MSU’s Department of Ecology in the College of Letters and Science, was awarded a National Science Foundation Graduate Research Program Fellowship, which gives her an annual stipend of $34,000 for three years to conduct her research.

Emmett, of Oregon, earned undergraduate degrees in environmental science and art at the University of Oregon. Before enrolling at MSU in 2014, she spent seven years working for government agencies and nonprofits in roles including field educator, project manager and biological technician.

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At MSU, Emmett researches in Assistant Professor Ben Poulter’s Ecosystem Dynamics Lab. Poulter has a dual appointment in the Department of Ecology and the Montana Institute on Ecosystems.

For her research, Emmett uses a computer model based on how plants grow, compete and respond to disturbances to build “virtual” forests. She then subjects her forests to different climate and greenhouse gas conditions to see how the vegetation and fire regimes respond.

“One challenge in ecosystem science, especially for my study of the Greater Yellowstone Ecosystem, is understanding the role of fire,” Emmett said. “The landscape we see around us is largely dominated by fire and the vegetation patterns emerge from complex interactions between soil, climate and fire. So, we have to represent fire interactions in our model to properly understand how climate change will impact the Greater Yellowstone Ecosystem.”

Emmett said previous research in the Western U.S. has considered the effects of climate and fire on forests, but leaves out the feedback effects of forests on both climate and fire. One aspect she is interested in is how vegetation might influence fuel conditions and end up limiting fire in the future.

“An increase in weather conditions ripe for fire could lead to more frequent fires than in the past for an area, which wouldn’t allow time for the forest to regrow,” she said. “As a result, are we going to see a shrinking of the forested areas and an expansion of grass and shrub lands?”

Using past climate data, Emmett is currently running computer simulations from the 1980s to the present day and comparing her simulated forest and fire activity to satellite data sets of vegetation cover and fire.

“To be able to look into the future or the past, you have to be able to get the present day right,” Emmett said. “I build my virtual forest and I see how well I am representing modern day because, if you get that right, hopefully this means your models and its equations are accurately representing the processes – the growth of the vegetation, the ignition and spread of fires, etc.”

Next, she will run her model with climate change scenarios to predict future vegetation patterns and fire activity. Her hope is to predict the area of the Greater Yellowstone Ecosystem that could transition from forest to grassland or shrub land and the frequency and severity of fires at the end of the century.

Emmett’s research is important, she said, because society depends on Earth’s natural “ecosystem services,” a term used in ecology for the direct and indirect benefits that ecosystems provide.

“Examples of ecosystem services are stable soils, flood control, and regulation of climate provided by forests.” she said. “Dramatic changes in vegetation patterns and increases in fire activity could impact these ecosystem services.”

Emmett says she hopes her research data will provide insight for public land managers who, with limited information, are tasked with developing climate change adaptation plans for the federal and state lands they oversee. And, it could benefit private landowners, who are also trying to manage their land.

“We are thrilled that the NSF is supporting Kristen’s research on climate change impacts in the GYE,” Poulter said. “Kristen has worked hard to learn numerical modeling techniques and we are excited to see how her hypotheses relating how climate change will affect future fire behavior and vegetation patterns will help us better understand this iconic landscape.”

Poulter added that Emmett’s previous work experience will be an asset for sharing her research with stakeholders.

“Kristen’s extensive background in working with federal agencies and non-governmental organizations will also help in communicating her results to practitioners who are keen to learn more about how to manage ecosystems under a changing climate,” he said.

After earning her doctorate, Emmett says she hopes to work as a research ecologist.

“Ultimately I’d like to be a research ecologist for a federal or state agency like the United States Geological Survey or the National Park Service, or at some other research institute,” she said. “I’d also be open to working for a nonprofit organization, such as I have in the past.”

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