title: Deciphering ocean carbon in a changing world.
abstract: Dissolved organic matter (DOM) in the oceans is one of the largest pools of reduced carbon on Earth, comparable in size to the atmospheric CO2 reservoir. A vast number of compounds are present in DOM, and they play important roles in all major element cycles, contribute to the storage of atmospheric CO2 in the ocean, support marine ecosystems, and facilitate interactions between organisms. At the heart of the DOM cycle lie molecular-level relationships between the individual compounds in DOM and the members of the ocean microbiome that produce and consume them. In the past, these connections have eluded clear definition because of the sheer numerical complexity of both DOM molecules and microorganisms. Emerging tools in analytical chemistry, microbiology, and informatics are breaking down the barriers to a fuller appreciation of these connections. Here we highlight questions being addressed using recent methodological and technological developments in those fields and consider how these advances are transforming our understanding of some of the most important reactions of the marine carbon cycle.
authors.affiliation: Department of Marine Sciences, University of Georgia, Athens, GA 30602; mmoran@uga.edu ekujawinski@whoi.edu aron.stubbins@skio.uga.edu rob5@uw.edu.
authors.forename: Mary Ann
authors.initials: MA
authors.lastname: Moran
authors.affiliation: Department of Marine Chemistry & Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, MA 02543; mmoran@uga.edu ekujawinski@whoi.edu aron.stubbins@skio.uga.edu rob5@uw.edu.
authors.forename: Elizabeth B
authors.identifier: http://orcid.org/0000-0001-8261-971X
authors.initials: EB
authors.lastname: Kujawinski
authors.affiliation: Skidaway Institute of Oceanography, Department of Marine Sciences, University of Georgia, Savannah, GA 31411; mmoran@uga.edu ekujawinski@whoi.edu aron.stubbins@skio.uga.edu rob5@uw.edu.
authors.forename: Aron
authors.initials: A
authors.lastname: Stubbins
authors.affiliation: Department of Information Technology, University of Washington, Seattle, WA 98105; mmoran@uga.edu ekujawinski@whoi.edu aron.stubbins@skio.uga.edu rob5@uw.edu.
authors.forename: Rob
authors.initials: R
authors.lastname: Fatland
authors.affiliation: Geosciences Research Division, Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA 92093;
authors.forename: Lihini I
authors.initials: LI
authors.lastname: Aluwihare
authors.affiliation: Department of Microbiology, University of Tennessee, Knoxville, TN 37996;
authors.forename: Alison
authors.initials: A
authors.lastname: Buchan
authors.affiliation: College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, Corvallis, OR 97331;
authors.forename: Byron C
authors.initials: BC
authors.lastname: Crump
authors.affiliation: Department of Pharmacology, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, La Jolla, CA 92037; Department of Chemistry, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, La Jolla, CA 92037; Department of Biochemistry, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, La Jolla, CA 92037;
authors.forename: Pieter C
authors.initials: PC
authors.lastname: Dorrestein
authors.affiliation: Department of Earth and Environmental Science, Columbia University, Palisades, NY 10964; Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY 10964;
authors.forename: Sonya T
authors.initials: ST
authors.lastname: Dyhrman
authors.affiliation: Environmental Molecular Science Laboratory, Pacific Northwest National Laboratory, Richland, WA 99352;
authors.forename: Nancy J
authors.initials: NJ
authors.lastname: Hess
authors.affiliation: Department of Computer Science and Engineering, University of Washington, Seattle, WA 98195;
authors.forename: Bill
authors.initials: B
authors.lastname: Howe
authors.affiliation: Department of Marine Chemistry & Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, MA 02543;
authors.forename: Krista
authors.initials: K
authors.lastname: Longnecker
authors.affiliation: Department of Marine Sciences, University of Georgia, Athens, GA 30602;
authors.forename: Patricia M
authors.initials: PM
authors.lastname: Medeiros
authors.affiliation: Research Group for Marine Geochemistry, Institute for Chemistry and Biology of the Marine Environment, University of Oldenburg, 26129 Oldenburg, Germany;
authors.forename: Jutta
authors.identifier: http://orcid.org/0000-0003-1237-9233
authors.initials: J
authors.lastname: Niggemann
authors.affiliation: CNRS, Sorbonne Universités, Université Pierre et Marie Curie, Laboratoire d'Océanographie Microbienne, Observatoire Océanologique, F-66650 Banyuls/mer, France;
authors.forename: Ingrid
authors.initials: I
authors.lastname: Obernosterer
authors.affiliation: Department of Marine Chemistry & Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, MA 02543;
authors.forename: Daniel J
authors.initials: DJ
authors.lastname: Repeta
authors.affiliation: Department of the Geophysical Sciences, University of Chicago, Chicago, IL 60637.
authors.forename: Jacob R
authors.initials: JR
authors.lastname: Waldbauer
mesh_terms: D002244:Carbon / Q000737:chemistry* / Q000378:metabolism; D057486:Carbon Cycle; D017753:Ecosystem; D005844:Geology / Q000379:methods*; D007254:Information Science; D008386:Marine Biology / Q000379:methods*; D064307:Microbiota; D009792:Oceans and Seas; D009930:Organic Chemicals / Q000032:analysis; D010839:Phytoplankton / Q000378:metabolism; D012623:Seawater / Q000032:analysis*; D012995:Solubility; D014872:Water Movements
chemical_list: D009930:Organic Chemicals; D002244:Carbon
keywords: cyberinfrastructure; dissolved organic matter; marine microbes