Alaina Smith, Scripps Institution of Oceanography, La Jolla, United States, Gwenn Hennon, Lamont -Doherty Earth Observatory, Biology and Paleo Environment, Palisades, NY, United States, Erik Zinser, University of Tennessee, Department of Microbiology, Knoxville, TN, United States, Benjamin Carter Calfee, University of Tennessee, Microbiology, Knoxville, TN, United States and Andrew David Barton, Scripps Institution of Oceanography, Section of Ecology, Behavior and Evolution, La Jolla, CA, United States