DOI: 10.1038/ismej.2010.36. Significant CO2 fixation by small prymnesiophytes in the subtropical and tropical northeast Atlantic Ocean

Significant CO2 fixation by small prymnesiophytes in the subtropical and tropical northeast Atlantic Ocean

10.1038/ismej.2010.36

Crossref journal-article

Oxford University Press (OUP)

The ISME Journal (286)

Abstract

Abstract Global estimates indicate the oceans are responsible for approximately half of the carbon dioxide fixed on Earth. Organisms ⩽5 μm in size dominate open ocean phytoplankton communities in terms of abundance and CO2 fixation, with the cyanobacterial genera Prochlorococcus and Synechococcus numerically the most abundant and more extensively studied compared with small eukaryotes. However, the contribution of specific taxonomic groups to marine CO2 fixation is still poorly known. In this study, we show that among the phytoplankton, small eukaryotes contribute significantly to CO2 fixation (44%) because of their larger cell volume and thereby higher cell-specific CO2 fixation rates. Within the eukaryotes, two groups, herein called Euk-A and Euk-B, were distinguished based on their flow cytometric signature. Euk-A, the most abundant group, contained cells 1.8±0.1 μm in size while Euk-B was the least abundant but cells were larger (2.8±0.2 μm). The Euk-B group comprising prymnesiophytes (73±13%) belonging largely to lineages with no close cultured counterparts accounted for up to 38% of the total primary production in the subtropical and tropical northeast Atlantic Ocean, suggesting a key role of this group in oceanic CO2 fixation.

Bibliography

Jardillier, L., Zubkov, M. V., Pearman, J., & Scanlan, D. J. (2010). Significant CO2 fixation by small prymnesiophytes in the subtropical and tropical northeast Atlantic Ocean. The ISME Journal, 4(9), 1180â1192.

Authors 4

Ludwig Jardillier (first)
Mikhail V Zubkov (additional)
John Pearman (additional)
David J Scanlan (additional)

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Dates

Type	When
Created	15 years, 4 months ago (April 15, 2010, 6:46 a.m.)
Deposited	1 year, 6 months ago (Feb. 1, 2024, 12:28 p.m.)
Indexed	1 week ago (Aug. 20, 2025, 8:36 a.m.)
Issued	15 years, 4 months ago (April 15, 2010)
Published	15 years, 4 months ago (April 15, 2010)
Published Online	15 years, 4 months ago (April 15, 2010)
Published Print	14 years, 11 months ago (Sept. 1, 2010)

Funders 0

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BibTeX

@article{Jardillier_2010, title={Significant CO2 fixation by small prymnesiophytes in the subtropical and tropical northeast Atlantic Ocean}, volume={4}, ISSN={1751-7370}, url={http://dx.doi.org/10.1038/ismej.2010.36}, DOI={10.1038/ismej.2010.36}, number={9}, journal={The ISME Journal}, publisher={Oxford University Press (OUP)}, author={Jardillier, Ludwig and Zubkov, Mikhail V and Pearman, John and Scanlan, David J}, year={2010}, month=apr, pages={1180–1192} }

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