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Biogeochemistry and nutrient cycling in terrestrial ecosystems, including the effects of management, land use change, and climatic change on soil C and N stocks, trace gas emissions from soils, and leaching of plant nutrients to streams and groundwater.

Experience

  • –present
    Director, Appalachian Laboratory and Professor, University of Maryland

Honours

Past President and Fellow of the Amercian Geophysical Union; Fellow of the AAAS and AGU; Past Jefferson Science Fellow; Web of Science Highly Cited Researcher