Articles | Volume 14, issue 16
Biogeosciences, 14, 3831–3849, 2017
https://doi.org/10.5194/bg-14-3831-2017

Special issue: Effects of rising CO2 on a Baltic Sea plankton...

Biogeosciences, 14, 3831–3849, 2017
https://doi.org/10.5194/bg-14-3831-2017

Research article 29 Aug 2017

Research article | 29 Aug 2017

Alterations in microbial community composition with increasing fCO2: a mesocosm study in the eastern Baltic Sea

Katharine J. Crawfurd et al.

Data sets

Phytoplankton population dynamics - Abundances K. J. Crawfurd https://doi.pangaea.de/10.1594/PANGAEA.879659

Phytoplankton population dynamics - Loss and gross growth rates of phytoplankton K. J. Crawfurd https://doi.pangaea.de/10.1594/PANGAEA.879660

Heterotrophic prokaryotes population dynamics - Grazing and viral lysis of prokaryotes K. J. Crawfurd https://doi.pangaea.de/10.1594/PANGAEA.879661

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Short summary
Carbon dioxide (CO2) is increasing in the atmosphere and oceans. To simulate future conditions we manipulated CO2 concentrations of natural Baltic seawater in 55 m3 bags in situ. We saw increased growth rates and abundances of the smallest-sized eukaryotic phytoplankton and reduced abundances of other phytoplankton with increased CO2. Viral and bacterial abundances were also affected. This would lead to more carbon recycling in the surface water and affect marine food webs and the carbon cycle.
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