Oxidation of 15N from ammonium, urea and putrescine by bacterioplankton communities in coastal waters off the West Antarctic Peninsula (PAL-LTER)

James T Hollibaugh1, Brian N Popp2, Natalie Wallsgrove2, Aimee Oyinlade-Oyekan1, Julian Damashek1, Xiaozhen Jen Mou3 and Hugh W Ducklow4, (1)University of Georgia, Department of Marine Sciences, Athens, GA, United States, (2)University of Hawaii at Manoa, Department of Earth Sciences, Honolulu, HI, United States, (3)Kent State University, Department of Biology, Kent, OH, United States, (4)Lamont Doherty Earth Observatory, New York, NY, United States