Acidification diminishes diatom silica production in the Southern Ocean
Diatoms, large bloom-forming marine microorganisms, build frustules out of silicate, which ballasts the cells and aids their export to the deep ocean. This unique physiology forges an important link between the marine silicon and carbon cycles. However, the effect of ocean acidification on the silic...
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Online Access: | https://doi.org/10.1038/s41558-019-0557-y http://ecite.utas.edu.au/137593 |
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ftunivtasecite:oai:ecite.utas.edu.au:137593 2023-05-15T13:55:18+02:00 Acidification diminishes diatom silica production in the Southern Ocean Petrou, K Baker, KG Nielsen, DA Hancock, AM Schultz, KG Davidson, AT 2019 https://doi.org/10.1038/s41558-019-0557-y http://ecite.utas.edu.au/137593 en eng Nature Publishing Group http://dx.doi.org/10.1038/s41558-019-0557-y Petrou, K and Baker, KG and Nielsen, DA and Hancock, AM and Schultz, KG and Davidson, AT, Acidification diminishes diatom silica production in the Southern Ocean, Nature Climate Change, 9, (10) pp. 781-786. ISSN 1758-678X (2019) [Refereed Article] http://ecite.utas.edu.au/137593 Biological Sciences Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) Refereed Article PeerReviewed 2019 ftunivtasecite https://doi.org/10.1038/s41558-019-0557-y 2020-06-01T22:16:17Z Diatoms, large bloom-forming marine microorganisms, build frustules out of silicate, which ballasts the cells and aids their export to the deep ocean. This unique physiology forges an important link between the marine silicon and carbon cycles. However, the effect of ocean acidification on the silicification of diatoms is unclear. Here we show that diatom silicification strongly diminishes with increased acidity in a natural Antarctic community. Analyses of single cells from within the community reveal that the effect of reduced pH on silicification differs among taxa, with several species having significantly reduced silica incorporation at CO 2 levels equivalent to those projected for 2100. These findings suggest that, before the end of this century, ocean acidification may influence the carbon and silicon cycle by both altering the composition of the diatom assemblages and reducing cell ballasting, which will probably alter vertical flux of these elements to the deep ocean. Article in Journal/Newspaper Antarc* Antarctic Ocean acidification Southern Ocean eCite UTAS (University of Tasmania) Antarctic Southern Ocean Nature Climate Change 9 10 781 786 |
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eCite UTAS (University of Tasmania) |
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ftunivtasecite |
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English |
topic |
Biological Sciences Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) |
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Biological Sciences Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) Petrou, K Baker, KG Nielsen, DA Hancock, AM Schultz, KG Davidson, AT Acidification diminishes diatom silica production in the Southern Ocean |
topic_facet |
Biological Sciences Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) |
description |
Diatoms, large bloom-forming marine microorganisms, build frustules out of silicate, which ballasts the cells and aids their export to the deep ocean. This unique physiology forges an important link between the marine silicon and carbon cycles. However, the effect of ocean acidification on the silicification of diatoms is unclear. Here we show that diatom silicification strongly diminishes with increased acidity in a natural Antarctic community. Analyses of single cells from within the community reveal that the effect of reduced pH on silicification differs among taxa, with several species having significantly reduced silica incorporation at CO 2 levels equivalent to those projected for 2100. These findings suggest that, before the end of this century, ocean acidification may influence the carbon and silicon cycle by both altering the composition of the diatom assemblages and reducing cell ballasting, which will probably alter vertical flux of these elements to the deep ocean. |
format |
Article in Journal/Newspaper |
author |
Petrou, K Baker, KG Nielsen, DA Hancock, AM Schultz, KG Davidson, AT |
author_facet |
Petrou, K Baker, KG Nielsen, DA Hancock, AM Schultz, KG Davidson, AT |
author_sort |
Petrou, K |
title |
Acidification diminishes diatom silica production in the Southern Ocean |
title_short |
Acidification diminishes diatom silica production in the Southern Ocean |
title_full |
Acidification diminishes diatom silica production in the Southern Ocean |
title_fullStr |
Acidification diminishes diatom silica production in the Southern Ocean |
title_full_unstemmed |
Acidification diminishes diatom silica production in the Southern Ocean |
title_sort |
acidification diminishes diatom silica production in the southern ocean |
publisher |
Nature Publishing Group |
publishDate |
2019 |
url |
https://doi.org/10.1038/s41558-019-0557-y http://ecite.utas.edu.au/137593 |
geographic |
Antarctic Southern Ocean |
geographic_facet |
Antarctic Southern Ocean |
genre |
Antarc* Antarctic Ocean acidification Southern Ocean |
genre_facet |
Antarc* Antarctic Ocean acidification Southern Ocean |
op_relation |
http://dx.doi.org/10.1038/s41558-019-0557-y Petrou, K and Baker, KG and Nielsen, DA and Hancock, AM and Schultz, KG and Davidson, AT, Acidification diminishes diatom silica production in the Southern Ocean, Nature Climate Change, 9, (10) pp. 781-786. ISSN 1758-678X (2019) [Refereed Article] http://ecite.utas.edu.au/137593 |
op_doi |
https://doi.org/10.1038/s41558-019-0557-y |
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Nature Climate Change |
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9 |
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10 |
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786 |
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