Manganese co-limitation of phytoplankton growth and major nutrient drawdown in the Southern Ocean
Abstract Residual macronutrients in the surface Southern Ocean result from restricted biological utilization, caused by low wintertime irradiance, cold temperatures, and insufficient micronutrients. Variability in utilization alters oceanic CO 2 sequestration at glacial-interglacial timescales. The...
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2021
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crspringernat:10.1038/s41467-021-21122-6 2023-05-15T14:10:52+02:00 Manganese co-limitation of phytoplankton growth and major nutrient drawdown in the Southern Ocean Browning, Thomas J. Achterberg, Eric P. Engel, Anja Mawji, Edward 2021 http://dx.doi.org/10.1038/s41467-021-21122-6 http://www.nature.com/articles/s41467-021-21122-6.pdf http://www.nature.com/articles/s41467-021-21122-6 en eng Springer Science and Business Media LLC https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 CC-BY Nature Communications volume 12, issue 1 ISSN 2041-1723 General Physics and Astronomy General Biochemistry, Genetics and Molecular Biology General Chemistry journal-article 2021 crspringernat https://doi.org/10.1038/s41467-021-21122-6 2022-01-04T07:45:46Z Abstract Residual macronutrients in the surface Southern Ocean result from restricted biological utilization, caused by low wintertime irradiance, cold temperatures, and insufficient micronutrients. Variability in utilization alters oceanic CO 2 sequestration at glacial-interglacial timescales. The role for insufficient iron has been examined in detail, but manganese also has an essential function in photosynthesis and dissolved concentrations in the Southern Ocean can be strongly depleted. However, clear evidence for or against manganese limitation in this system is lacking. Here we present results from ten experiments distributed across Drake Passage. We found manganese (co-)limited phytoplankton growth and macronutrient consumption in central Drake Passage, whilst iron limitation was widespread nearer the South American and Antarctic continental shelves. Spatial patterns were reconciled with the different rates and timescales for removal of each element from seawater. Our results suggest an important role for manganese in modelling Southern Ocean productivity and understanding major nutrient drawdown in glacial periods. Article in Journal/Newspaper Antarc* Antarctic Drake Passage Southern Ocean Springer Nature (via Crossref) Antarctic Drake Passage Southern Ocean Nature Communications 12 1 |
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Open Polar |
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Springer Nature (via Crossref) |
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crspringernat |
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English |
topic |
General Physics and Astronomy General Biochemistry, Genetics and Molecular Biology General Chemistry |
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General Physics and Astronomy General Biochemistry, Genetics and Molecular Biology General Chemistry Browning, Thomas J. Achterberg, Eric P. Engel, Anja Mawji, Edward Manganese co-limitation of phytoplankton growth and major nutrient drawdown in the Southern Ocean |
topic_facet |
General Physics and Astronomy General Biochemistry, Genetics and Molecular Biology General Chemistry |
description |
Abstract Residual macronutrients in the surface Southern Ocean result from restricted biological utilization, caused by low wintertime irradiance, cold temperatures, and insufficient micronutrients. Variability in utilization alters oceanic CO 2 sequestration at glacial-interglacial timescales. The role for insufficient iron has been examined in detail, but manganese also has an essential function in photosynthesis and dissolved concentrations in the Southern Ocean can be strongly depleted. However, clear evidence for or against manganese limitation in this system is lacking. Here we present results from ten experiments distributed across Drake Passage. We found manganese (co-)limited phytoplankton growth and macronutrient consumption in central Drake Passage, whilst iron limitation was widespread nearer the South American and Antarctic continental shelves. Spatial patterns were reconciled with the different rates and timescales for removal of each element from seawater. Our results suggest an important role for manganese in modelling Southern Ocean productivity and understanding major nutrient drawdown in glacial periods. |
format |
Article in Journal/Newspaper |
author |
Browning, Thomas J. Achterberg, Eric P. Engel, Anja Mawji, Edward |
author_facet |
Browning, Thomas J. Achterberg, Eric P. Engel, Anja Mawji, Edward |
author_sort |
Browning, Thomas J. |
title |
Manganese co-limitation of phytoplankton growth and major nutrient drawdown in the Southern Ocean |
title_short |
Manganese co-limitation of phytoplankton growth and major nutrient drawdown in the Southern Ocean |
title_full |
Manganese co-limitation of phytoplankton growth and major nutrient drawdown in the Southern Ocean |
title_fullStr |
Manganese co-limitation of phytoplankton growth and major nutrient drawdown in the Southern Ocean |
title_full_unstemmed |
Manganese co-limitation of phytoplankton growth and major nutrient drawdown in the Southern Ocean |
title_sort |
manganese co-limitation of phytoplankton growth and major nutrient drawdown in the southern ocean |
publisher |
Springer Science and Business Media LLC |
publishDate |
2021 |
url |
http://dx.doi.org/10.1038/s41467-021-21122-6 http://www.nature.com/articles/s41467-021-21122-6.pdf http://www.nature.com/articles/s41467-021-21122-6 |
geographic |
Antarctic Drake Passage Southern Ocean |
geographic_facet |
Antarctic Drake Passage Southern Ocean |
genre |
Antarc* Antarctic Drake Passage Southern Ocean |
genre_facet |
Antarc* Antarctic Drake Passage Southern Ocean |
op_source |
Nature Communications volume 12, issue 1 ISSN 2041-1723 |
op_rights |
https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41467-021-21122-6 |
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Nature Communications |
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12 |
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1 |
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1766282976248725504 |