Aggregation and Sedimentation of Thalassiosira weissflogii (diatom) in a Warmer and More Acidified Future Ocean
© The Author(s), 2014. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in PLoS One 9 (2014): e112379, doi:10.1575/1912/6845. Increasing Transparent Exopolymer Particle (TEP) formation during diatom blooms as a result of el...
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Online Access: | https://hdl.handle.net/1912/6950 |
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ftwhoas:oai:darchive.mblwhoilibrary.org:1912/6950 2023-05-15T17:51:25+02:00 Aggregation and Sedimentation of Thalassiosira weissflogii (diatom) in a Warmer and More Acidified Future Ocean Seebah, Shalin Fairfield, Caitlin Ullrich, Matthias S. Passow, Uta 2014-11-06 application/pdf https://hdl.handle.net/1912/6950 en_US eng Public Library of Science https://hdl.handle.net/1912/6845 https://doi.org/10.1371/journal.pone.0112379 PLoS One 9 (2014): e112379 https://hdl.handle.net/1912/6950 doi:10.1371/journal.pone.0112379 Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ CC-BY PLoS One 9 (2014): e112379 doi:10.1371/journal.pone.0112379 Article 2014 ftwhoas https://doi.org/10.1371/journal.pone.0112379 2022-05-28T22:59:12Z © The Author(s), 2014. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in PLoS One 9 (2014): e112379, doi:10.1575/1912/6845. Increasing Transparent Exopolymer Particle (TEP) formation during diatom blooms as a result of elevated temperature and pCO2 have been suggested to result in enhanced aggregation and carbon flux, therewith potentially increasing the sequestration of carbon by the ocean. We present experimental results on TEP and aggregate formation by Thalassiosira weissflogii (diatom) in the presence or absence of bacteria under two temperature and three pCO2 scenarios. During the aggregation phase of the experiment TEP formation was elevated at the higher temperature (20°C vs. 15°C), as predicted. However, in contrast to expectations based on the established relationship between TEP and aggregation, aggregation rates and sinking velocity of aggregates were depressed in warmer treatments, especially under ocean acidification conditions. If our experimental findings can be extrapolated to natural conditions, they would imply a reduction in carbon flux and potentially reduced carbon sequestration after diatom blooms in the future ocean. This work was supported by National Science Foundation grants OCE-0926711 & OCE-1041038 to UP and Helmholtz Graduate School for Polar and Marine Research and Jacobs University Bremen to SS. Article in Journal/Newspaper Ocean acidification Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) PLoS ONE 9 11 e112379 |
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Open Polar |
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Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) |
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ftwhoas |
language |
English |
description |
© The Author(s), 2014. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in PLoS One 9 (2014): e112379, doi:10.1575/1912/6845. Increasing Transparent Exopolymer Particle (TEP) formation during diatom blooms as a result of elevated temperature and pCO2 have been suggested to result in enhanced aggregation and carbon flux, therewith potentially increasing the sequestration of carbon by the ocean. We present experimental results on TEP and aggregate formation by Thalassiosira weissflogii (diatom) in the presence or absence of bacteria under two temperature and three pCO2 scenarios. During the aggregation phase of the experiment TEP formation was elevated at the higher temperature (20°C vs. 15°C), as predicted. However, in contrast to expectations based on the established relationship between TEP and aggregation, aggregation rates and sinking velocity of aggregates were depressed in warmer treatments, especially under ocean acidification conditions. If our experimental findings can be extrapolated to natural conditions, they would imply a reduction in carbon flux and potentially reduced carbon sequestration after diatom blooms in the future ocean. This work was supported by National Science Foundation grants OCE-0926711 & OCE-1041038 to UP and Helmholtz Graduate School for Polar and Marine Research and Jacobs University Bremen to SS. |
format |
Article in Journal/Newspaper |
author |
Seebah, Shalin Fairfield, Caitlin Ullrich, Matthias S. Passow, Uta |
spellingShingle |
Seebah, Shalin Fairfield, Caitlin Ullrich, Matthias S. Passow, Uta Aggregation and Sedimentation of Thalassiosira weissflogii (diatom) in a Warmer and More Acidified Future Ocean |
author_facet |
Seebah, Shalin Fairfield, Caitlin Ullrich, Matthias S. Passow, Uta |
author_sort |
Seebah, Shalin |
title |
Aggregation and Sedimentation of Thalassiosira weissflogii (diatom) in a Warmer and More Acidified Future Ocean |
title_short |
Aggregation and Sedimentation of Thalassiosira weissflogii (diatom) in a Warmer and More Acidified Future Ocean |
title_full |
Aggregation and Sedimentation of Thalassiosira weissflogii (diatom) in a Warmer and More Acidified Future Ocean |
title_fullStr |
Aggregation and Sedimentation of Thalassiosira weissflogii (diatom) in a Warmer and More Acidified Future Ocean |
title_full_unstemmed |
Aggregation and Sedimentation of Thalassiosira weissflogii (diatom) in a Warmer and More Acidified Future Ocean |
title_sort |
aggregation and sedimentation of thalassiosira weissflogii (diatom) in a warmer and more acidified future ocean |
publisher |
Public Library of Science |
publishDate |
2014 |
url |
https://hdl.handle.net/1912/6950 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
PLoS One 9 (2014): e112379 doi:10.1371/journal.pone.0112379 |
op_relation |
https://hdl.handle.net/1912/6845 https://doi.org/10.1371/journal.pone.0112379 PLoS One 9 (2014): e112379 https://hdl.handle.net/1912/6950 doi:10.1371/journal.pone.0112379 |
op_rights |
Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1371/journal.pone.0112379 |
container_title |
PLoS ONE |
container_volume |
9 |
container_issue |
11 |
container_start_page |
e112379 |
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1766158548187742208 |