Volume 14, issue 24 | Copyright
Biogeosciences, 14, 5789-5804, 2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 22 Dec 2017

Research article | 22 Dec 2017

The Holocene sedimentary record of cyanobacterial glycolipids in the Baltic Sea: an evaluation of their application as tracers of past nitrogen fixation

Martina Sollai et al.
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Publications Copernicus
Short summary
The Baltic Sea is characterized by recurring summer phytoplankton blooms, dominated by a few cyanobacterial species. These bacteria are able to use dinitrogen gas as the source for nitrogen and produce very specific lipids. We analyzed these lipids in a sediment core to study their presence over the past 7000 years. This reveals that cyanobacterial blooms have not only occurred in the last decades but were common at times when the Baltic was connected to the North Sea.
The Baltic Sea is characterized by recurring summer phytoplankton blooms, dominated by a few...