See attachment for abstract and details regarding the seminar. The Use of Stable Isotopes to Constrain the Nitrogen Cycle Krystin Riha Ecological Sciences and Engineering Earth Atmospheric Planetary Sciences Thursday, April 18, 2013 3:30 p.m. Room 1252, HAMP Bldg. Christal Musser Program Coordinator Ecological Sciences and Engineering Office of Interdisciplinary Graduate Programs The Purdue University Graduate School | Purdue University Ernest C. Young Hall, Room B-40 | 155 S. Grant Street | West Lafayette, IN 47907 Email: musser@purdue.edu<mailto:musser@purdue.edu> | Web: http://www.purdue.edu/ese<http://www.purdue.edu/dp/ese> Phone: 765-494-2102 | Fax: 765-496-6271 Like us on Facebook<https://www.facebook.com/?sk=welcome#!/ESEatPurdue>