Dr. Tom Langen conducts research on the environmental impact of roads, on the effectiveness of public-private partnerships for wetland restoration, and on habitat management and conservation of birds, fish, reptiles and other animals. His road-related research has included the impacts of winter road management on roadside vegetation and lakes in the Adirondack Park, predictive modeling of hotspots of road mortality of amphibians and reptiles, design and functioning of wildlife barriers and passageways for turtles, and the impact of highways on habitat connectivity in Costa Rican National Parks. He leads professional development workshops in Latin America and North America on the environmental impact of roads and other infrastructure.

Dr. Langen’s wetland research focuses on the environmental, economic, and social benefits of wetland restoration to private landowners. His research on habitat management in birds focuses on cooperative projects between landowners and conservationists for threatened species such as grassland breeding birds, the golden-winged warbler, and spruce grouse. He is also conducting research on the population biology of the mooneye, a threatened fish, and on design of effective fish passage structures.