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.
September 19, 2025
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.
Methane is one of the most powerful levers for slowing near‑term warming, yet the world still lacks the tools to track it with confidence. Sparkle Malone, assistant professor of ecosystem carbon capture, explains why a coordinated global observation system is essential for understanding both human and natural methane emissions.
Read the Yale Center for Natural Carbon Capture Q&A with YSE faculty Sparkle Malone.
May 07, 2026
The Yale Hixon Center for Urban Sustainability recently hosted a delegation of Members of the British Parliament as part of a four-day Connecticut visit organized by the British American Parliamentary Group. The six MPs met with Karen Seto, the Frederick C. Hixon Professor of Geography and Urbanization Science, to discuss climate policy, urbanization, and the role of cities in addressing climate change.
The visit included a tour of New Haven’s bioswales. Bioswales are a landscaping feature designed to slow, filter, and redirect stormwater runoff, slowly filtering it through sediment into the groundwater or allowing it to be absorbed by native plants. They help prevent flooding and reduce pollution that would otherwise flow into rivers and streams. The Urban Resources Initiative has partnered with the city to help lead the construction and management of the bioswales. Approximately 200 bioswales have been installed across downtown New Haven through this broader effort, with about 50 adjacent to Yale’s campus.
“Seeing the bioswale presented me with a simple and effective option I want to take back and suggest to my local authority. Not only would it alleviate flooding problems, but it could also be an attractive green feature that could enhance areas, " said Christine Jardine, Member of Parliament for Edinburgh West.
The visit also provided an opportunity to explore collaboration between UK policymakers, the City of New Haven, and YSE on sustainability and climate resilience initiatives.
March 27, 2026
Jonathan Gewirtzman, a doctoral candidate in ecosystem ecology and biogeochemistry, has received the 2026 Katherine S. McCarter Graduate Student Policy Award from the Ecological Society of America. He is one of 20 students from universities across the U.S. to be honored with the award.
Recipients of the award travel to Washington, D.C. for policy, communication and career training and they meet with lawmakers on Capitol Hill.
Gewirtzman, a National Science Foundation Research Fellow, investigates greenhouse gas cycling in forests and wetlands aimed at informing strategies for mitigating natural emissions and enhancing nature-based climate solutions.
“ESA has been an important community for me throughout my graduate career — a place to connect with ecologists across subfields and to build leadership experience as an officer of the Biogeosciences Section. I'm excited for the opportunity to learn firsthand from scientists and policymakers working at that interface,” Gewirtzman said.
February 19, 2026
