University of Maryland - College Park

Earth System Science Interdisciplinary Center & Geology

Access to clean and fresh water is an issue that faces Earth's growing population, and it is critical for protecting drinking water supplies and restoring aquatic ecosystems.  My expertise is in hydrologic sciences and biogeochemistry with an emphasis on understanding chemical transport and transformation in inland waters (e.g., ground water, streams, rivers, lakes, and reservoirs).  

From 2010 to present, I have taught courses in Ecosystem Restoration, Environmental Geology, and Environmental Geochemistry at UMD. I have been engaged in science outreach, invited presentations and national webinars, and educational videos.  Briefly, I have worked on a documentary with Dan Rather entitled “Conquering the Concrete,” which was broadcast on the HDNet TV cable channel.  I worked with the American Museum of Natural History to prepare an exhibit for students and teachers across the country and an educational video for secondary school education entitled “Ecology Interrupted.”  I have also served on various advisory panels and steering committees related to watershed restoration and freshwater resources.



2003 | University of Colorado, Boulder, CO

Ph.D, Ecology and Evolutionary ​Biology 

1997  | Cornell University, Ithaca, NY

B.A., Ecology and Evolutionary Biology

Professional Experience

2013 - Present | Professor

University of Maryland College Park

Earth System Science Interdisciplinary Center

Department of Geology

2010 - 2013 | Assistant Professor
University of Maryland College Park

Earth System Science Interdisciplinary Center
Department of Geology

2008 | IGBFellow in Freshwater Science

Leibniz-Institute of Freshwater Ecology and Inland Fisheries​

2005 - 2009 | Adjunct Assistant Professor 
University of Maryland Baltimore County

2005 - 2010 | Assistant Professor 
University of Maryland Center for Environmental Science


2001 - 2003 | Postdoctoral Scientist

Cary Institute of Ecosystem Studies, Millbrook, NY


2000 | Edna Bailey Sussman Foundation Fellowship​

2012 | University of Maryland CMNS (College of Computer, Mathematical, and Natural Sciences) Board of Visitors Junior Faculty Award

2012 | International Recognition of Professional Excellence (IRPE) Prize 

2012 | U.S. EPA Level III Scientific and Technical Achievement Award (along with P. Mayer, E. Striz, P. Groffman)

2014 | University of Maryland Council for the Environment Junior Faculty Award

2014 | Greenfield Central School Foundation Alumni Hall of Fame.  Greenfield Central School Foundation, Indiana​