Sargassum sp. act as a large regional source of marine dissolved organic carbon and polyphenols.

• Published in: Global Biogeochemical Cycles
• Main Authors: Powers, L.C., Hertkorn, N., McDonald, N., Schmitt-Kopplin, P., Del Vecchio, R., Blough, N.V., Gonsior, M.
• Format: Article in Journal/Newspaper
• Language: German
• Published: Amer Geophysical Union 2019
• Subjects: Sargassum; Marine Dissolved Organic Matter; Marine Polyphenols; Doc; Nmr; Ft-icr Ms; Lambda; North Atlantic
• Online Access: https://push-zb.helmholtz-muenchen.de/frontdoor.php?source_opus=57472; https://doi.org/10.1029/2019GB006225

Dissolved organic carbon (DOC) plays critical roles in marine carbon cycling, but its sources and sinks remain uncertain. In this study, we monitored DOC exudation rates of Sargassum natans under visible light (lambda > 390 nm) and solar radiation. DOC release rates ranged from 7 to 10 mu g C g(b...