Elizabeth B Kujawinski¹, Krista Longnecker², Gretchen Swarr¹, Melissa C. Kido Soule¹, Brittany Widner³, Shuting Liu⁴, Rachel Jane Parsons⁵, Stephen J Giovannoni⁶ and Craig A Carlson⁴, (1)Woods Hole Oceanographic Institution, Marine Chemistry & Geochemistry, Woods Hole, MA, United States, (2)Woods Hole Oceanographic Inst, Woods Hole, MA, United States, (3)Woods Hole Oceanographic Institution, Marine Chemistry and Geochemistry, Woods Hole, MA, United States, (4)University of California Santa Barbara, Marine Science Institute/Department of Ecology, Evolution and Marine Biology, Santa Barbara, CA, United States, (5)Bermuda Institute for Ocean Sciences, St. George's, Bermuda, (6)Oregon State University, Department of Microbiology, Corvallis, OR, United States