Availability of iron and major nutrients for phytoplankton in the northeast Atlantic Ocean
International audience Because of recent findings that Fe is a limiting factor for phytoplankton activity even at relatively high dissolved iron (DFe) concentrations, the potential importance of Fe limitation was revisited in the northeast Atlantic Ocean (39-458N, 17-218W). We report data gathered d...
Published in: | Limnology and Oceanography |
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Main Authors: | , , , , , , , |
Other Authors: | , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2004
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Online Access: | https://hal.archives-ouvertes.fr/hal-00702539 https://hal.archives-ouvertes.fr/hal-00702539/document https://hal.archives-ouvertes.fr/hal-00702539/file/Blain_2004.pdf https://doi.org/10.4319/lo.2004.49.6.2095 |
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Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
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English |
topic |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
spellingShingle |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography Blain, Stéphane Guieu, Cécile Claustre, Hervé Leblanc, Karine Moutin, T. QUEGUINER, Bernard Ras, Josephine Sarthou, Géraldine Availability of iron and major nutrients for phytoplankton in the northeast Atlantic Ocean |
topic_facet |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
International audience Because of recent findings that Fe is a limiting factor for phytoplankton activity even at relatively high dissolved iron (DFe) concentrations, the potential importance of Fe limitation was revisited in the northeast Atlantic Ocean (39-458N, 17-218W). We report data gathered during deck incubation experiments performed at three stations in February-March 2001 with surface seawater containing DFe concentrations of ;0.40 nmol L21. At all stations, Fe addition enhanced phytoplankton growth. Fe limitation was moderate and occurred simultaneously with limitation by major nutrients. This was clearly demonstrated for diatoms that were colimited by orthosilicic acid. Micro-, nano-, and picoplankton benefited from Fe enrichment. Experiments performed with the trihydroxamate siderophore desferrioxamine mesylate B (DFOB) indicated that Fe reserves exist within the cells, especially within the larger cells. This reserve could result from luxurious storage of Fe by colimited cells during episodic atmospheric deposition of Saharan dust. Simulating concentrations of dust resulting from aerosol deposition in well-stratified surface waters, we determined that the solubility of Saharan dust was very low (,0.1% w/w) but the amount of DFe released in seawater was sufficient to relieve the Fe limitation of the ambient phytoplankton community. |
author2 |
Laboratoire d'océanographie et de biogéochimie (LOB) Université de la Méditerranée - Aix-Marseille 2-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Laboratoire d'océanographie de Villefranche (LOV) Observatoire océanologique de Villefranche-sur-mer (OOVM) Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS) Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Blain, Stéphane Guieu, Cécile Claustre, Hervé Leblanc, Karine Moutin, T. QUEGUINER, Bernard Ras, Josephine Sarthou, Géraldine |
author_facet |
Blain, Stéphane Guieu, Cécile Claustre, Hervé Leblanc, Karine Moutin, T. QUEGUINER, Bernard Ras, Josephine Sarthou, Géraldine |
author_sort |
Blain, Stéphane |
title |
Availability of iron and major nutrients for phytoplankton in the northeast Atlantic Ocean |
title_short |
Availability of iron and major nutrients for phytoplankton in the northeast Atlantic Ocean |
title_full |
Availability of iron and major nutrients for phytoplankton in the northeast Atlantic Ocean |
title_fullStr |
Availability of iron and major nutrients for phytoplankton in the northeast Atlantic Ocean |
title_full_unstemmed |
Availability of iron and major nutrients for phytoplankton in the northeast Atlantic Ocean |
title_sort |
availability of iron and major nutrients for phytoplankton in the northeast atlantic ocean |
publisher |
HAL CCSD |
publishDate |
2004 |
url |
https://hal.archives-ouvertes.fr/hal-00702539 https://hal.archives-ouvertes.fr/hal-00702539/document https://hal.archives-ouvertes.fr/hal-00702539/file/Blain_2004.pdf https://doi.org/10.4319/lo.2004.49.6.2095 |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_source |
ISSN: 0024-3590 EISSN: 1939-5590 Limnology and Oceanography https://hal.archives-ouvertes.fr/hal-00702539 Limnology and Oceanography, Association for the Sciences of Limnology and Oceanography, 2004, 49 (6), pp.2095-2104. ⟨10.4319/lo.2004.49.6.2095⟩ |
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info:eu-repo/semantics/altIdentifier/doi/10.4319/lo.2004.49.6.2095 hal-00702539 https://hal.archives-ouvertes.fr/hal-00702539 https://hal.archives-ouvertes.fr/hal-00702539/document https://hal.archives-ouvertes.fr/hal-00702539/file/Blain_2004.pdf doi:10.4319/lo.2004.49.6.2095 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.4319/lo.2004.49.6.2095 |
container_title |
Limnology and Oceanography |
container_volume |
49 |
container_issue |
6 |
container_start_page |
2095 |
op_container_end_page |
2104 |
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1766142680561090560 |
spelling |
ftccsdartic:oai:HAL:hal-00702539v1 2023-05-15T17:41:14+02:00 Availability of iron and major nutrients for phytoplankton in the northeast Atlantic Ocean Blain, Stéphane Guieu, Cécile Claustre, Hervé Leblanc, Karine Moutin, T. QUEGUINER, Bernard Ras, Josephine Sarthou, Géraldine Laboratoire d'océanographie et de biogéochimie (LOB) Université de la Méditerranée - Aix-Marseille 2-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Laboratoire d'océanographie de Villefranche (LOV) Observatoire océanologique de Villefranche-sur-mer (OOVM) Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS) Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) 2004-07-06 https://hal.archives-ouvertes.fr/hal-00702539 https://hal.archives-ouvertes.fr/hal-00702539/document https://hal.archives-ouvertes.fr/hal-00702539/file/Blain_2004.pdf https://doi.org/10.4319/lo.2004.49.6.2095 en eng HAL CCSD Association for the Sciences of Limnology and Oceanography info:eu-repo/semantics/altIdentifier/doi/10.4319/lo.2004.49.6.2095 hal-00702539 https://hal.archives-ouvertes.fr/hal-00702539 https://hal.archives-ouvertes.fr/hal-00702539/document https://hal.archives-ouvertes.fr/hal-00702539/file/Blain_2004.pdf doi:10.4319/lo.2004.49.6.2095 info:eu-repo/semantics/OpenAccess ISSN: 0024-3590 EISSN: 1939-5590 Limnology and Oceanography https://hal.archives-ouvertes.fr/hal-00702539 Limnology and Oceanography, Association for the Sciences of Limnology and Oceanography, 2004, 49 (6), pp.2095-2104. ⟨10.4319/lo.2004.49.6.2095⟩ [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/article Journal articles 2004 ftccsdartic https://doi.org/10.4319/lo.2004.49.6.2095 2021-12-26T00:24:24Z International audience Because of recent findings that Fe is a limiting factor for phytoplankton activity even at relatively high dissolved iron (DFe) concentrations, the potential importance of Fe limitation was revisited in the northeast Atlantic Ocean (39-458N, 17-218W). We report data gathered during deck incubation experiments performed at three stations in February-March 2001 with surface seawater containing DFe concentrations of ;0.40 nmol L21. At all stations, Fe addition enhanced phytoplankton growth. Fe limitation was moderate and occurred simultaneously with limitation by major nutrients. This was clearly demonstrated for diatoms that were colimited by orthosilicic acid. Micro-, nano-, and picoplankton benefited from Fe enrichment. Experiments performed with the trihydroxamate siderophore desferrioxamine mesylate B (DFOB) indicated that Fe reserves exist within the cells, especially within the larger cells. This reserve could result from luxurious storage of Fe by colimited cells during episodic atmospheric deposition of Saharan dust. Simulating concentrations of dust resulting from aerosol deposition in well-stratified surface waters, we determined that the solubility of Saharan dust was very low (,0.1% w/w) but the amount of DFe released in seawater was sufficient to relieve the Fe limitation of the ambient phytoplankton community. Article in Journal/Newspaper Northeast Atlantic Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Limnology and Oceanography 49 6 2095 2104 |