Forest worker observing a controlled burn. Photo: iStock/AscentXmedia
Study Explores Climate-Friendly Actions to Reduce Wildfire Risks
To prevent destructive wildfires, the U.S. Forest Service thins forests and places the cuttings, called residue, into piles for burning. However, a recent study led by Jake Barker ’24 MF and a team of researchers projected that a significant amount of carbon dioxide is released during these events, which works against climate-change mitigation goals. The burns are also financially costly.
The residue burns by the Forest Service are being used to prevent catastrophic fires that have been fueled by logging, drought, climate-change, and previous government-mandated fire suppression that have led to the accumulation of debris and dense stands of small trees, which provide fuel for enormous blazes.
The study, published in Frontiers for Global Change, simulated residue burning across western U.S. forests, and estimated that the burns contributed over 1.7 million metric tons of carbon emissions annually. The researchers found that that costs for labor and equipment were also notably higher than had been reported.
The authors suggest that alternatives to burning residues, such as using them for biofuels or burying them to sequester carbon, could help reduce fire risk and carbon emissions. Steep forest terrain makes removing residues for other uses difficult and costly. They recommend the Forest Service seek subsidies to aid in funding infrastructure for climate-friendly alternatives.
“Forests play a big part in natural climate solutions,” Barker said. “We’re demonstrating the opportunity for novel and creative pathways to transform residues into a natural climate solution.”
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Five YSE Faculty Members Named to 2025 ‘Highly Cited Researchers’ List
Five Yale School of the Environment faculty members have been named to the world’s most influential researchers list by Clarivate Analytics, a company that compiles a list of scientists and social scientists whose papers rank in the top 1% of citations.
Included on this year’s list were: Mark Bradford, the E.H. Harriman Professor of Soils and Ecosystem Ecology; Xuhui Lee the Sara Shallenberger Brown Professor of Climate Science; Anthony Leiserowitz, the JoshAni-TomKat Professor of Climate Communication; Peter Raymond, the Oastler Professor of Biogeochemistry; and Karen Seto, the Frederick C. Hixon Professor of Geography and Urbanization Science. In total, 49 faculty members from Yale University made the list of 6,868 researchers worldwide.
Mark Bradford
E.H. Harriman Professor of Soils and Ecosystem Ecology
Xuhui Lee
Sara Shallenberger Brown Professor of Climate Science
Anthony Leiserowitz
JoshAni-TomKat Professor of Climate Communication; Director of the Yale Program on Climate Change Communication (YPCCC)
Peter A. Raymond
Oastler Professor of Biogeochemistry; Co-Director, Yale Center for Natural Carbon Capture
Karen Seto
Frederick C. Hixon Professor of Geography and Urbanization Science; Director of the Hixon Center for Urban Sustainability; Co-Director of the Yale Center for Geospatial Solutions
YSE Urban Scientist Receives Franklin Institute Award
Karen Seto, the Frederick C. Hixon Professor of Geography and Urbanization Science, has received a 2026 Franklin Institute Award for her work on urban issues.
The Institute honored Seto for her “pioneering work integrating satellite imagery, modeling methods, and social sciences to analyze the consequences of urbanization, land use, and global environmental change.” The award is one of the oldest in the nation.
“The 2026 laureates embody the same remarkable spirit of curiosity, ingenuity, and discovery that defined our nation’s founding,” said Larry Dubinski, President and CEO of The Franklin Institute.
Seto, a world renown geographer, was coordinating lead author of two U.N. climate change reports and co-led chapters on how urban areas can mitigate climate change. Her research developed the first forecasts of urban land expansion globally.
Seto is one of eight recipients of the award, which will be given during a ceremony April 30, 2026, in Philadelphia.
"I’m deeply honored by the award, especially given past recipients in the category of earth and environmental science. I’m also grateful for all my students and postdocs in the lab. This award is a celebration of our collective work," Seto said.
Karen Seto
Frederick C. Hixon Professor of Geography and Urbanization Science; Director of the Hixon Center for Urban Sustainability; Co-Director of the Yale Center for Geospatial Solutions
New Haven Promise Interns Gain Experience in Forest and Wetland Data Analysis
Four undergraduate students from New Haven received field training this summer at YSE through the New Haven Promise program. The students assisted on a range of projects focused on biogeochemistry, hydrology, forest health and forest restoration.
The program, which began in June and ended in August, supports paid internships to help students gain work experience in their respective fields of study.
Working with research scientist Marlyse Duguid, KeRen Tan ’28 inventoried invasive plant species for the Yale Golf Course and Preserve, examined the impacts of Beech Leaf Disease (BLD) on New Haven’s urban forests, and took height measurements of planted trees in an Urban “Miyawaki Micro Forest” project.
Kaleb Diaz Alvarez, Mark Taylor, and Erica Arias, worked with Professor Peter Raymond and postdoctoral fellow Craig Brinkerhoff on hydrology projects in Connecticut and Massachusetts, exploring the role of river wetlands connectivity on downstream water quality. They learned to “read a river,” annotate images of rivers across the U.S. and helped train AI models.
Clockwise:
From left: Erica Arias, Mark Taylor, and Kaleb Diaz Alvarez measure the alkalinity of water samples taken from a mangrove river in the Florida Everglades in the Raymond biogeochemistry lab.
KeRen Tan ’29 takes height measurements of planted trees for an urban Miyawaki Micro Forest project.
Alvarez (left) and YSE postdoc Craig Brinkerhoff (right) measure a headwater stream's flowing width in Guilford, CT.