Joan Ehrenfeld

Joan Gardner Ehrenfeld (1948 – 2011) was an American environmental scientist who was a professor at Rutgers University. Her research considered invasive species and ecology. She was elected Fellow of the American Association for the Advancement of Science in 2000.

Early life and education Ehrenfeld was born in New York City. Her mother was a violinist, but encouraged Ehrenfeld to have a career in the sciences. Ehrenfeld said she remembered reading Paul de Kruif's Microbe Hunters as a child. She returned to Barnard College for undergraduate studies, where she specialized in biology. She also completed a summer program at Colorado State University, and spent time working in a molecular biology lab.

Research and career In 1976, Ehrenfeld was appointed to the faculty in the Center for Coastal and Environmental at Rutgers University. She was made Director of the New Jersey Water Resources Research Institute in 1990. Ehrenfeld worked on wetlands ecology and was particularly interested in the relationships between biodiversity and human disease. She extensively studied the spread of the West Nile virus. She found that barberry tissue is high in nitrogen-rich compounds akaloids, which causes a loss of organic matter in nearby soil due to excessive nitrogen cycling. As barberry starts to decompose, the nitrate levels in nearby soil start to increase, making the areas susceptible to weeds. In 2019, the New York–New Jersey Trail Conference established the Joan Ehrenfeld Award for Responsible Stewardship.

Selected publications

Awards and honours 1999 Cook College Academic Professional Excellence Award for Academic Innovation and Creativity 2000 Elected Fellow of the American Association for the Advancement of Science 2003 Research Excellence and Impact Award Science Advisory Board of the United States Environmental Protection Agency 2010 Elected Fellow of the Society of Wetland Scientists 2011 Research Excellence Award from the School of Environmental and Biological Sciences Her husband, David Ehrenfeld, was a professor of biology at Rutgers University. In 2010, she was diagnosed with leukemia. She was an examiner for Swarthmore College. She was an active member of her town's progressive Jewish community, was a brilliant musician and student of music theory, and had a tremendously curious mind and a passion for a wide array of topics from Shakesperean literature to mycology.