Caitlin Livsey, University of California Davis, Davis, CA, United States, Hubert Vonhof, Max Planck Institute for Chemistry, Mainz, Germany, Tessa M Hill, University California Davis, Earth and Planetary Sciences and Bodega Marine Laboratory, Davis, CA, United States, Reinhard Kozdon, UW-Madison, Madison, WI, United States and Howard J Spero, University California Davis, Davis, CA, United States