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Effect of CO2 enrichment on phytoplankton photosynthesis in the North Atlantic sub-tropical gyre

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, ORCID}
Source Title	Progress in Oceanography. - : Elsevier - ISSN 0079-6611 Roč. 158, SI (2017), s. 76-89
Number 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	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

Number of the records: 1