Hydrothermal vents trigger massive phytoplankton blooms in the Southern Ocean
Hydrothermal activity is significant in regulating the dynamics of trace elements in the ocean. Biogeochemical models suggest that hydrothermal iron might play an important role in the iron-depleted Southern Ocean by enhancing the biological pump. However, the ability of this mechanism to affect lar...
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ftzenodo:oai:zenodo.org:3715570 2023-06-06T11:44:29+02:00 Hydrothermal vents trigger massive phytoplankton blooms in the Southern Ocean Ardyna, Mathieu 2020-03-19 https://zenodo.org/record/3715570 https://doi.org/10.1038/s41467-019-09973-6 unknown info:eu-repo/grantAgreement/EC/H2020/746748/ https://zenodo.org/record/3715570 https://doi.org/10.1038/s41467-019-09973-6 oai:zenodo.org:3715570 info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode info:eu-repo/semantics/article publication-article 2020 ftzenodo https://doi.org/10.1038/s41467-019-09973-6 2023-04-13T21:39:24Z Hydrothermal activity is significant in regulating the dynamics of trace elements in the ocean. Biogeochemical models suggest that hydrothermal iron might play an important role in the iron-depleted Southern Ocean by enhancing the biological pump. However, the ability of this mechanism to affect large-scale biogeochemistry and the pathways by which hydrothermal iron reach the surface layer have not been observationally constrained. Here we present the first observational evidence of upwelled hydrothermally influenced deep waters stimulating massive phytoplankton blooms in the Southern Ocean. Captured by profiling floats, two blooms were observed in the vicinity of the Antarctic Circumpolar Current, downstream of active hydrothermal vents along the Southwest Indian Ridge. These hotspots of biological activity are supported by mixing of hydrothermally sourced iron stimulated by flow- topography interactions. Such findings reveal the important role of hydrothermal vents on surface biogeochemistry, potentially fueling local hotspot sinks for atmospheric CO2 by enhancing the biological pump. Article in Journal/Newspaper Antarc* Antarctic Southern Ocean Zenodo Antarctic Indian Southern Ocean The Antarctic Nature Communications 10 1 |
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Hydrothermal activity is significant in regulating the dynamics of trace elements in the ocean. Biogeochemical models suggest that hydrothermal iron might play an important role in the iron-depleted Southern Ocean by enhancing the biological pump. However, the ability of this mechanism to affect large-scale biogeochemistry and the pathways by which hydrothermal iron reach the surface layer have not been observationally constrained. Here we present the first observational evidence of upwelled hydrothermally influenced deep waters stimulating massive phytoplankton blooms in the Southern Ocean. Captured by profiling floats, two blooms were observed in the vicinity of the Antarctic Circumpolar Current, downstream of active hydrothermal vents along the Southwest Indian Ridge. These hotspots of biological activity are supported by mixing of hydrothermally sourced iron stimulated by flow- topography interactions. Such findings reveal the important role of hydrothermal vents on surface biogeochemistry, potentially fueling local hotspot sinks for atmospheric CO2 by enhancing the biological pump. |
format |
Article in Journal/Newspaper |
author |
Ardyna, Mathieu |
spellingShingle |
Ardyna, Mathieu Hydrothermal vents trigger massive phytoplankton blooms in the Southern Ocean |
author_facet |
Ardyna, Mathieu |
author_sort |
Ardyna, Mathieu |
title |
Hydrothermal vents trigger massive phytoplankton blooms in the Southern Ocean |
title_short |
Hydrothermal vents trigger massive phytoplankton blooms in the Southern Ocean |
title_full |
Hydrothermal vents trigger massive phytoplankton blooms in the Southern Ocean |
title_fullStr |
Hydrothermal vents trigger massive phytoplankton blooms in the Southern Ocean |
title_full_unstemmed |
Hydrothermal vents trigger massive phytoplankton blooms in the Southern Ocean |
title_sort |
hydrothermal vents trigger massive phytoplankton blooms in the southern ocean |
publishDate |
2020 |
url |
https://zenodo.org/record/3715570 https://doi.org/10.1038/s41467-019-09973-6 |
geographic |
Antarctic Indian Southern Ocean The Antarctic |
geographic_facet |
Antarctic Indian Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_relation |
info:eu-repo/grantAgreement/EC/H2020/746748/ https://zenodo.org/record/3715570 https://doi.org/10.1038/s41467-019-09973-6 oai:zenodo.org:3715570 |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode |
op_doi |
https://doi.org/10.1038/s41467-019-09973-6 |
container_title |
Nature Communications |
container_volume |
10 |
container_issue |
1 |
_version_ |
1767961388721897472 |