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Biogeosciences An interactive open-access journal of the European Geosciences Union
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Volume 14, issue 24
Biogeosciences, 14, 5789–5804, 2017
https://doi.org/10.5194/bg-14-5789-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 4.0 License.
Biogeosciences, 14, 5789–5804, 2017
https://doi.org/10.5194/bg-14-5789-2017
© 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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Cited articles  
Adams, D. G.: Heterocyst formation in cyanobacteria, Curr. Opin. Microbiol., 3, 618–624, 2000.
Andrén, E., Andrén, T., and Kunzendorf, H.: Holocene history of the Baltic Sea as a background for assessing records of human impact in the sediments of the Gotland Basin, Holocene, 10, 687–702, https://doi.org/10.1191/09596830094944, 2000.
Andrén, T., Björck, S., Andrén, E., Conley, D. J., Zillén, L., and Anjar, J.: The Development of the Baltic Sea Basin During the Last 130 ka, in: The Baltic Sea Basin, chap. 4, edited by: Harff, J., Björck, S., and Hoth, P., Springer, Berlin Heidelberg, Germany, 75–97, 2011.
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Bale, N. J., Hopmans, E. C., Zell, C., Lima Sobrinho, R., Kim, J. H., Sinninghe Damsté, J. S., Villareal, T. A., and Schouten, S.: Long chain glycolipids with pentose head groups as biomarkers for marine endosymbiotic heterocystous cyanobacteria, Org. Geochem., 81, 1–7, https://doi.org/10.1016/j.orggeochem.2015.01.004, 2015.
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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...
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