Southern Ocean Phytoplankton Community Structure as a Gatekeeper for Global Nutrient Biogeochemistry ...
Upwelling and the biological pump in the Southern Ocean control the amount and stoichiometry of nutrients available for lateral export to lower latitudes, thereby collectively acting as a gatekeeper for the global thermocline nutrient distribution and global ocean productivity. Yet, the exact role p...
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Online Access: | https://dx.doi.org/10.3929/ethz-b-000504117 http://hdl.handle.net/20.500.11850/504117 |
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ftdatacite:10.3929/ethz-b-000504117 2024-04-28T07:55:49+00:00 Southern Ocean Phytoplankton Community Structure as a Gatekeeper for Global Nutrient Biogeochemistry ... Nissen, Cara Gruber, Nicolas Münnich, Matthias Vogt, Meike 2021 application/pdf https://dx.doi.org/10.3929/ethz-b-000504117 http://hdl.handle.net/20.500.11850/504117 en eng ETH Zurich info:eu-repo/semantics/openAccess Creative Commons Attribution Non Commercial No Derivatives 4.0 International https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode cc-by-nc-nd-4.0 Southern Ocean silicic acid nitrate phytoplankton diatoms coccolithophores article-journal Text ScholarlyArticle Journal Article 2021 ftdatacite https://doi.org/10.3929/ethz-b-000504117 2024-04-02T12:34:54Z Upwelling and the biological pump in the Southern Ocean control the amount and stoichiometry of nutrients available for lateral export to lower latitudes, thereby collectively acting as a gatekeeper for the global thermocline nutrient distribution and global ocean productivity. Yet, the exact role played by phytoplankton and its community composition in this gatekeeping has not been well established. Here, we investigate this role using a high-resolution model of the Southern Ocean (ROMS-BEC) with an explicit parametrization of silicifying diatoms and calcifying coccolithophores. Consistent with expectations, diatoms are very efficient in consuming the upwelled Si (Formula presented.) south of the Antarctic Polar Front, and exporting it to depth at a rate of 91 Tmol Si (Formula presented.). This leads to Si (Formula presented.) being trapped in the Southern Ocean, preventing it from leaking laterally into the Subantarctic. Model experiments reveal that this trapping is driven by both high Si-to-N diatom ... : Global Biogeochemical Cycles, 35 (8) ... Article in Journal/Newspaper Antarc* Antarctic Southern Ocean DataCite Metadata Store (German National Library of Science and Technology) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Southern Ocean silicic acid nitrate phytoplankton diatoms coccolithophores |
spellingShingle |
Southern Ocean silicic acid nitrate phytoplankton diatoms coccolithophores Nissen, Cara Gruber, Nicolas Münnich, Matthias Vogt, Meike Southern Ocean Phytoplankton Community Structure as a Gatekeeper for Global Nutrient Biogeochemistry ... |
topic_facet |
Southern Ocean silicic acid nitrate phytoplankton diatoms coccolithophores |
description |
Upwelling and the biological pump in the Southern Ocean control the amount and stoichiometry of nutrients available for lateral export to lower latitudes, thereby collectively acting as a gatekeeper for the global thermocline nutrient distribution and global ocean productivity. Yet, the exact role played by phytoplankton and its community composition in this gatekeeping has not been well established. Here, we investigate this role using a high-resolution model of the Southern Ocean (ROMS-BEC) with an explicit parametrization of silicifying diatoms and calcifying coccolithophores. Consistent with expectations, diatoms are very efficient in consuming the upwelled Si (Formula presented.) south of the Antarctic Polar Front, and exporting it to depth at a rate of 91 Tmol Si (Formula presented.). This leads to Si (Formula presented.) being trapped in the Southern Ocean, preventing it from leaking laterally into the Subantarctic. Model experiments reveal that this trapping is driven by both high Si-to-N diatom ... : Global Biogeochemical Cycles, 35 (8) ... |
format |
Article in Journal/Newspaper |
author |
Nissen, Cara Gruber, Nicolas Münnich, Matthias Vogt, Meike |
author_facet |
Nissen, Cara Gruber, Nicolas Münnich, Matthias Vogt, Meike |
author_sort |
Nissen, Cara |
title |
Southern Ocean Phytoplankton Community Structure as a Gatekeeper for Global Nutrient Biogeochemistry ... |
title_short |
Southern Ocean Phytoplankton Community Structure as a Gatekeeper for Global Nutrient Biogeochemistry ... |
title_full |
Southern Ocean Phytoplankton Community Structure as a Gatekeeper for Global Nutrient Biogeochemistry ... |
title_fullStr |
Southern Ocean Phytoplankton Community Structure as a Gatekeeper for Global Nutrient Biogeochemistry ... |
title_full_unstemmed |
Southern Ocean Phytoplankton Community Structure as a Gatekeeper for Global Nutrient Biogeochemistry ... |
title_sort |
southern ocean phytoplankton community structure as a gatekeeper for global nutrient biogeochemistry ... |
publisher |
ETH Zurich |
publishDate |
2021 |
url |
https://dx.doi.org/10.3929/ethz-b-000504117 http://hdl.handle.net/20.500.11850/504117 |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons Attribution Non Commercial No Derivatives 4.0 International https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode cc-by-nc-nd-4.0 |
op_doi |
https://doi.org/10.3929/ethz-b-000504117 |
_version_ |
1797581201339318272 |