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dc.contributor.authorArrieta, J M
dc.contributor.authorMayol, Eva
dc.contributor.authorHansman, Roberta L.
dc.contributor.authorHerndl, Gerhard J.
dc.contributor.authorDittmar, Thorsten
dc.contributor.authorDuarte, Carlos M.
dc.date.accessioned2016-01-19T13:23:21Z
dc.date.available2016-01-19T13:23:21Z
dc.date.issued2015-03-19
dc.identifier.citationArrieta JM, Mayol E, Hansman RL, Herndl GJ, Dittmar T, et al. (2015) Dilution limits dissolved organic carbon utilization in the deep ocean. Science 348: 331–333. Available: http://dx.doi.org/10.1126/science.1258955.
dc.identifier.issn0036-8075
dc.identifier.issn1095-9203
dc.identifier.pmid25883355
dc.identifier.doi10.1126/science.1258955
dc.identifier.urihttp://hdl.handle.net/10754/594183
dc.description.abstractOceanic dissolved organic carbon (DOC) is the second largest reservoir of organic carbon in the biosphere. About 72% of the global DOC inventory is stored in deep oceanic layers for years to centuries, supporting the current view that it consists of materials resistant to microbial degradation. An alternative hypothesis is that deep-water DOC consists of many different, intrinsically labile compounds at concentrations too low to compensate for the metabolic costs associated to their utilization. Here, we present experimental evidence showing that low concentrations rather than recalcitrance preclude consumption of a substantial fraction of DOC, leading to slow microbial growth in the deep ocean. These findings demonstrate an alternative mechanism for the long-term storage of labile DOC in the deep ocean, which has been hitherto largely ignored. © 2015, American Association for the Advancement of Science. All rights reserved.
dc.description.sponsorshipThis is a contribution to the Malaspina 2010 Expedition project, funded by the CONSOLIDER-Ingenio 2010 program of the from the Spanish Ministry of Economy and Competitiveness (Ref. CSD2008-00077). J. M. A. was supported by a "Ramon y Cajal" research fellowship from the Spanish Ministry of Economy and Competitiveness. E.M. was supported by a fellowship from the Junta para la Ampliacion de Estudios program of CSIC. G.J.H. and R.L.H. were supported by the Austrian Science Fund (FWF) projects I486-B09 and P23234-B11 and by the European Research Council (ERC) under the European Community's Seventh Framework Programme (FP7/2007-2013)/ERC grant agreement 268595 (MEDEA project). We thank A. Dorsett for assistance with DOC analyses, participants in the Malaspina Expedition and the crews of the BIO Hesperides, and RV Pelagia and the personnel of the Marine Technology Unit of CSIC for their invaluable support. Original data sets are available online at http://digital.csic.es/handle/10261/111563. J. M. A. designed the experimental setup, carried out part of the experiments, measured prokaryotic abundance, analyzed the data, and wrote the manuscript. E.M. carried out part of the experiments and data analysis. C.M.D. designed the Malaspina 2010 Expedition, was responsible for DOC analyses, and together with G.J.H. contributed to the design of the experiments and discussion of results. R.L.H. and T.D. analyzed the FT-ICR-MS samples. All authors discussed the results and contributed to the manuscript.
dc.publisherAmerican Association for the Advancement of Science (AAAS)
dc.titleDilution limits dissolved organic carbon utilization in the deep ocean
dc.typeArticle
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Division
dc.contributor.departmentMarine Science Program
dc.contributor.departmentRed Sea Research Center (RSRC)
dc.identifier.journalScience
dc.contributor.institutionDepartment of Global Change Research, Consejo Superior de Investigaciones Científicas (CSIC), Universidad de Las Islas Baleares (UIB)Esporles, Spain
dc.contributor.institutionDepartment of Limnology and Bio-Oceanography, Division Bio-Oceanography, University of Vienna, Althanstr. 14Vienna, Austria
dc.contributor.institutionDepartment of Biological Oceanography, Royal Netherlands Institute for Sea Research (NIOZ)Den Burg, Netherlands
dc.contributor.institutionInstitute for Chemistry and Biology of the Marine Environment (ICBM), Carl Von Ossietzky University Oldenburg, Max Planck Institute for Marine Microbiology (MPI)Bremen, Germany
dc.contributor.institutionUWA Oceans Institute, University of Western Australia (UWA)Crawley, WA, Australia
kaust.personArrieta, Jesus
kaust.personDuarte, Carlos M.
dc.date.published-online2015-03-19
dc.date.published-print2015-04-17


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