Significant CO2 fixation by small prymnesiophytes in the subtropical and tropical northeast Atlantic Ocean
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 nu...
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Oxford University Press (OUP)
2010
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croxfordunivpr:10.1038/ismej.2010.36 2024-06-23T07:55:27+00:00 Significant CO2 fixation by small prymnesiophytes in the subtropical and tropical northeast Atlantic Ocean Jardillier, Ludwig Zubkov, Mikhail V Pearman, John Scanlan, David J 2010 http://dx.doi.org/10.1038/ismej.2010.36 http://www.nature.com/articles/ismej201036.pdf http://www.nature.com/articles/ismej201036 https://academic.oup.com/ismej/article-pdf/4/9/1180/56403697/41396_2010_article_bfismej201036.pdf en eng Oxford University Press (OUP) https://academic.oup.com/pages/standard-publication-reuse-rights http://www.springer.com/tdm http://www.springer.com/tdm The ISME Journal volume 4, issue 9, page 1180-1192 ISSN 1751-7362 1751-7370 journal-article 2010 croxfordunivpr https://doi.org/10.1038/ismej.2010.36 2024-06-11T04:21:33Z 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. Article in Journal/Newspaper Northeast Atlantic Oxford University Press The ISME Journal 4 9 1180 1192 |
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Open Polar |
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Oxford University Press |
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croxfordunivpr |
language |
English |
description |
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. |
format |
Article in Journal/Newspaper |
author |
Jardillier, Ludwig Zubkov, Mikhail V Pearman, John Scanlan, David J |
spellingShingle |
Jardillier, Ludwig Zubkov, Mikhail V Pearman, John Scanlan, David J Significant CO2 fixation by small prymnesiophytes in the subtropical and tropical northeast Atlantic Ocean |
author_facet |
Jardillier, Ludwig Zubkov, Mikhail V Pearman, John Scanlan, David J |
author_sort |
Jardillier, Ludwig |
title |
Significant CO2 fixation by small prymnesiophytes in the subtropical and tropical northeast Atlantic Ocean |
title_short |
Significant CO2 fixation by small prymnesiophytes in the subtropical and tropical northeast Atlantic Ocean |
title_full |
Significant CO2 fixation by small prymnesiophytes in the subtropical and tropical northeast Atlantic Ocean |
title_fullStr |
Significant CO2 fixation by small prymnesiophytes in the subtropical and tropical northeast Atlantic Ocean |
title_full_unstemmed |
Significant CO2 fixation by small prymnesiophytes in the subtropical and tropical northeast Atlantic Ocean |
title_sort |
significant co2 fixation by small prymnesiophytes in the subtropical and tropical northeast atlantic ocean |
publisher |
Oxford University Press (OUP) |
publishDate |
2010 |
url |
http://dx.doi.org/10.1038/ismej.2010.36 http://www.nature.com/articles/ismej201036.pdf http://www.nature.com/articles/ismej201036 https://academic.oup.com/ismej/article-pdf/4/9/1180/56403697/41396_2010_article_bfismej201036.pdf |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_source |
The ISME Journal volume 4, issue 9, page 1180-1192 ISSN 1751-7362 1751-7370 |
op_rights |
https://academic.oup.com/pages/standard-publication-reuse-rights http://www.springer.com/tdm http://www.springer.com/tdm |
op_doi |
https://doi.org/10.1038/ismej.2010.36 |
container_title |
The ISME Journal |
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4 |
container_issue |
9 |
container_start_page |
1180 |
op_container_end_page |
1192 |
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1802648057310871552 |