Articles | Volume 15, issue 4
Biogeosciences, 15, 1229–1241, 2018
https://doi.org/10.5194/bg-15-1229-2018
Biogeosciences, 15, 1229–1241, 2018
https://doi.org/10.5194/bg-15-1229-2018

Research article 01 Mar 2018

Research article | 01 Mar 2018

C5 glycolipids of heterocystous cyanobacteria track symbiont abundance in the diatom Hemiaulus hauckii across the tropical North Atlantic

Nicole J. Bale et al.

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AR: Author's response | RR: Referee report | ED: Editor decision
ED: Publish subject to minor revisions (review by editor) (15 Dec 2017) by Silvio Pantoja
AR by N.J. Bale on behalf of the Authors (19 Dec 2017)  Author's response    Manuscript
ED: Publish as is (03 Jan 2018) by Silvio Pantoja
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Short summary
Associations between diatoms and N-fixing cyanobacteria (diatom–diazotroph associations, DDAs) play an important role in the N cycle of the tropical North Atlantic. Heterocysts are the site of N fixation and contain unique glycolipids. We measured these glycolipids in the water column and surface sediment from the tropical North Atlantic. We found a significant correlation between the concentration of glycolipid and of DDAs, strengthening their application as biomarkers.
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