Direct Interspecies Electron Transfer May Complicate Use of Stable Isotopes to Trace the Pathway of Methanogenesis

Matthew F Kirk, Kansas State University, Department of Geology, Manhattan, KS, United States, Javil Hansen, Kansas State University, Department of Geology, Manhattan, United States, Brett Nave, Kansas State University, Division of Biology, Manhattan, United States, Keith C Hackley, Isotech Laboratories Inc., Champaign, United States, Lydia Zeglin, Kansas State University, Division of Biology, Manhattan, KS, United States, Janet M Paper, Benedictine College, Department of Biology, Atchison, United States, David S Vinson, University of North Carolina at Charlotte, Charlotte, United States and Qusheng Jin, University of Oregon, Department of Earth Sciences, Eugene, OR, United States