Eddy-enhanced primary production sustains heterotrophic microbial activities in the Eastern Tropical North Atlantic

Abstract ∼ a a a a DOC) was variable with depth and laterally and not always sufficient to compensate the bacterial carbon demand (BCD: BR + DOC accounting for between 28 % and 110 % of the BCD. Bacterial growth efficiency (BGE: BP / BCD) ranged between 1.7 % and 18.2 %. We estimated the metabolic state to establish whether the CE was a source or a sink of organic carbon. We showed that the CE carried a strong autotrophic signal in the core (PP />  1). Our results suggest that submesoscale (0–10 km) processes lead to highly variable metabolic activities in both photoautotrophic and heterotrophic microorganisms. Overall, we revealed that the CEs not only trap and transport coastal nutrients and organic carbon to the open ocean but also stimulate phytoplankton growth, generating freshly produced organic matter during westward propagation. This drives heterotrophic processes and may contribute to the previously observed net heterotrophy in open Atlantic surface waters.

Object Details

• Location: Deutsche Nationalbibliothek Frankfurt am Main
• Extent: Online-Ressource
• Language: Englisch

References and Relationships

• Bibliographic citation: Eddy-enhanced primary production sustains heterotrophic microbial activities in the Eastern Tropical North Atlantic ; volume:19 ; number:22 ; year:2022 ; pages:5199-5219 ; extent:21 ; Biogeosciences ; 19, Heft 22 (2022), 5199-5219 (gesamt 21)

Contributors, Places and Time

• Creator: Devresse, Quentin ; Becker, Kevin W. ; Bendinger, Arne ; Hahn, Johannes ; Engel, Anja

Further information

• DOI: 10.5194/bg-19-5199-2022
• URN: urn:nbn:de:101:1-2022112404413497069205
• Rights: Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
• Last update: 15.08.2025, 7:31 AM CEST