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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C5 glycolipids of heterocystous cyanobacteria track symbiont abundance in the diatom Hemiaulus hauckii across the tropical North Atlantic N. J. Bale, T. A. Villareal, E. C. Hopmans, C. P. D. Brussaard, M. Besseling, D. J. C. Dorhout, J. S. Sinninghe Damsté, and S. Schouten https://doi.org/10.1594/PANGAEA.886399

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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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