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 The American Association for the Advancement of Science (AAAS) is an American international non-profit organization with the stated goals of promoting cooperation among scientists, defending scientific freedom, encouraging scientific respons ...

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.Archived version
Ehrenfeld said she remembered reading Paul de Kruif's ''

Microbe Hunters Paul Henry de Kruif (, rhyming with "life") (1890–1971) was an American microbiologist and author of Dutch descent. Publishing as Paul de Kruif, he is most noted for his 1926 book, ''Microbe Hunters''. This book was not only a bestseller for a le ...

'' as a child. As a teenager, the National Science Foundation selected her for a summer placement in the laboratory of Donald Ritchie at Barnard College. She returned to Barnard College for undergraduate studies, where she specialized in biology. She also completed a summer program at

Colorado State University Colorado State University (Colorado State or CSU) is a public land-grant research university in Fort Collins, Colorado. It is the flagship university of the Colorado State University System. Colorado State University is classified among "R1: ...

, and spent time working in a molecular biology lab. Ehrenfeld moved to Harvard University, where she earned a master's degree in 1970. She was a doctoral researcher at the

City University of New York The City University of New York ( CUNY; , ) is the Public university, public university system of Education in New York City, New York City. It is the largest urban university system in the United States, comprising 25 campuses: eleven Upper divis ...

, where she studied the ecological interactions of '' Euphorbia''.

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. Ehrenfeld investigated how the '' Berberis thunbergii'' (Japanese barberry) impacted soil processes and micro-organisms. 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. Ehrenfeld removed barberry in the Morristown National Historical Park and attempted to restore native shrubs ( spice-bush and witch-hazel). These native plants could not survive, as the barberry had transformed the soil itself. She thus showed that just one plant can have a dramatic impact on its environment. In 2012, the Ecological Society of America launched the Ehrenfeld Award to celebrate her contribution to urban ecology. 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

*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

Personal life

Ehrenfeld had four children. Her husband,

David Ehrenfeld David Ehrenfeld is an American professor of biology at Rutgers University and is the author of over a dozen publications, including ''The Arrogance of Humanism'' (1978), ''Becoming Good Ancestors: How We Balance Nature, Community, and Technology' ...

, was a professor of biology at Rutgers University. In 2010, she was diagnosed with leukemia. She was an examiner for

Swarthmore College Swarthmore College ( , ) is a Private college, private Liberal arts colleges in the United States, liberal arts college in Swarthmore, Pennsylvania. Founded in 1864, with its first classes held in 1869, Swarthmore is one of the earliest coeduca ...

. She was a member of the Jewish community, and dedicated her weekends to music and the choir. Ehrenfeld died on June 25, 2011.

References

{{DEFAULTSORT:Ehrenfeld, Joan 1948 births 2011 deaths Scientists from New York City Barnard College alumni Harvard University alumni City University of New York alumni Rutgers University faculty American environmental scientists American Jews Fellows of the American Association for the Advancement of Science Deaths from leukemia