Purdue University


Timothy Filley profile picture

Timothy Filley

Director, Professor of Earth, Atmospheric & Planetary Sciences
+1 765 49-46581
+1 765 49-61372
HAMP 3277C

Tim Filley is a professor of stable isotope biogeochemistry in the Department of Earth, Atmospheric and Planetary Sciences and co-director of the Purdue Stable Isotope (PSI) laboratory. He is also the co-director of the Arequipa Nexus Institute for Food, Energy, Water, and the Environment. Broadly, Filley’s research focuses on the fundamental processes controlling the cycling of carbon and nitrogen in soil, litter, and streams within natural and managed ecosystems, and the implications of such biogeochemistry to the fate of emerging pollutants. Using natural abundance and highly enriched stable isotopes and biomarker tools his group investigates how perturbations to ecosystems (e.g., woody plant encroachment, invasive species, storm events and intensive management) interact with soil and microbial properties to stabilize or destabilize soil organic matter. A primary goal of this work is to develop a stronger scientific basis for understanding the vulnerability and resilience of soil organic matter to intensive management. Filley received his B.S., chemistry, from Loyola University of Chicago, and his Ph.D. in isotope geochemistry from the Pennsylvania State University.

Lynne Dahmen profile picture

Lynne Dahmen

Managing Director
+1 765 49-46386

Lynne Dahmen has worked with research faculty at Purdue University since joining the university in 2008. At the Center, she manages the implementation of Center services and new initiatives. Lynne also works with research teams to develop white papers and other strategic communication. She comes to C4E most recently from the Center for Brain-inspired Computing, a large research effort led by Purdue, where she served as the Administrative Director. Before that, she worked for the Office of the Executive VP for Research and Partnerships, where she spent over nine years engaging with faculty across campus on developing research grants and providing training on the skills involved in writing them. She also has taught courses in the School of Languages and Cultures at Purdue and previously at Al Akhawayn University in Ifrane, Morocco and at Indiana University, Bloomington, where she earned her PhD in Comparative Literature. She has expertise in supporting team science and brings experience in faculty coordination, project management, training and communication.

Robby Teas profile picture

Robby Teas

Senior Program Assistant
+1 765-49-62717
MANN 105

Robby joined C4E in June 2019 after relocating to West Lafayette from Austin, Texas, where he was a Research Assistant for the Consulate General of Ireland for four years. Prior to that role, Robby was a Legislative Aide in the Texas House of Representatives for the 83rd and 84th legislative sessions. He graduated with a B.A. in Geography from the University of Texas at Austin. During his time as an undergraduate, Robby was selected to the Bill Archer Fellowship Program, which allowed him to spend part of his senior year in Washington, D.C. as an Environmental Policy Intern for The Wilderness Society. Outside of work you can find him watching or playing baseball, golfing, and taking weekend trips with his wife, Elizabeth.