Due to a lapse in appropriations, the majority of USGS websites may not be up to date and may not reflect current conditions. Websites displaying real-time data, such as Earthquake and Water and information needed for public health and safety will be updated with limited support. Additionally, USGS will not be able to respond to inquiries until appropriations are enacted.  For more information, please see www.doi.gov/shutdown

Steven S Perakis



Postdoc, 2001, Stanford University

Ph.D. 2000, Cornell University

M.S. 1994, University of Washington

B.S. 1990, University of Pennsylvania


Forest biogeochemistry and ecosystem studies, watershed science, riparian forests, global change, nutrient cycling, forest soil fertility, stable isotopes