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Effect of CO2 enrichment on phytoplankton photosynthesis in the North Atlantic sub-tropical gyre
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SYSNO ASEP 0484794 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Effect of CO2 enrichment on phytoplankton photosynthesis in the North Atlantic sub-tropical gyre Author(s) Tilstone, G. (GB)
Šedivá, Blanka (MBU-M) ORCID
Tarran, G. (GB)
Kaňa, Radek (MBU-M) RID, ORCID
Prášil, Ondřej (MBU-M) RID, ORCIDSource Title Progress in Oceanography. - : Elsevier - ISSN 0079-6611
Roč. 158, SI (2017), s. 76-89Number of pages 14 s. Language eng - English Country GB - United Kingdom Keywords CO2 enrichment ; Picoeukaryotes ; Dinoflagellates Subject RIV EE - Microbiology, Virology OECD category Microbiology R&D Projects ED2.1.00/03.0110 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) GA206/08/1683 GA ČR - Czech Science Foundation (CSF) Institutional support MBU-M - RVO:61388971 UT WOS 000418978400006 DOI https://doi.org/10.1016/j.pocean.2016.12.005 Annotation he effects of changes in CO2 concentration in seawater on phytoplankton community structure and photosynthesis were studied in the North Atlantic sub-tropical gyre. Three shipboard incubations were conducted for 48 h at similar to 760 ppm CO2 and control (360 ppm CO2) from 49 degrees N to 7 degrees N during October and November 2010. Elevated CO2 caused a decrease in pH to similar to 7.94 compared to similar to 8.27 in the control. During one experiment, the biomass of nano-and picoeukaryotes increased under CO2 enrichment, but primary production decreased relative to the control. In two of the experiments the biomass was dominated by dinoflagellates, and there was a significant increase in the maximum photosynthetic rate (P-m(B)) and light-limited slope of photosynthesis (alpha(B)) at CO2 concentrations of 760 ppm relative to the controls. 77 K emission spectroscopy showed that the higher photosynthetic rates measured under CO2 enrichment increased the connection of reversible photosystem antennae, which resulted in an increase in light harvesting efficiency and carbon fixation. Workplace Institute of Microbiology Contact Eliška Spurná, eliska.spurna@biomed.cas.cz, Tel.: 241 062 231 Year of Publishing 2018
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