Details zur Publikation

Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.1126/science.aaf7796
Titel (primär) Dissolved organic sulfur in the ocean: Biogeochemistry of a petagram inventory
Autor Ksionzek, K.B.; Lechtenfeld, O.J. ORCID logo ; McCallister, S.L.; Schmitt-Kopplin, P.; Geuer, J.K.; Geibert, W.; Koch, B.P.
Quelle Science
Erscheinungsjahr 2016
Department ANA
Band/Volume 354
Heft 6311
Seite von 456
Seite bis 459
Sprache englisch
UFZ Querschnittsthemen RU2;
Abstract Although sulfur is an essential element for marine primary production and critical for climate processes, little is known about the oceanic pool of nonvolatile dissolved organic sulfur (DOS). We present a basin-scale distribution of solid-phase extractable DOS in the East Atlantic Ocean and the Atlantic sector of the Southern Ocean. Although molar DOS versus dissolved organic nitrogen (DON) ratios of 0.11 ± 0.024 in Atlantic surface water resembled phytoplankton stoichiometry (sulfur/nitrogen ~ 0.08), increasing dissolved organic carbon (DOC) versus DOS ratios and decreasing methionine-S yield demonstrated selective DOS removal and active involvement in marine biogeochemical cycles. Based on stoichiometric estimates, the minimum global inventory of marine DOS is 6.7 petagrams of sulfur, exceeding all other marine organic sulfur reservoirs by an order of magnitude.
dauerhafte UFZ-Verlinkung
Ksionzek, K.B., Lechtenfeld, O.J., McCallister, S.L., Schmitt-Kopplin, P., Geuer, J.K., Geibert, W., Koch, B.P. (2016):
Dissolved organic sulfur in the ocean: Biogeochemistry of a petagram inventory
Science 354 (6311), 456 - 459 10.1126/science.aaf7796