Extreme Levels of Ocean Acidification Restructure the Plankton Community and Biogeochemistry of a Temperate Coastal Ecosystem: A Mesocosm Study
The oceans’ uptake of anthropogenic carbon dioxide (CO 2 ) decreases seawater pH and alters the inorganic carbon speciation – summarized in the term ocean acidification (OA). Already today, coastal regions experience episodic pH events during which surface layer pH drops below values projected for t...
Published in: | Frontiers in Marine Science |
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2021
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Online Access: | http://dx.doi.org/10.3389/fmars.2020.611157 https://www.frontiersin.org/articles/10.3389/fmars.2020.611157/full |
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crfrontiers:10.3389/fmars.2020.611157 2024-06-23T07:55:51+00:00 Extreme Levels of Ocean Acidification Restructure the Plankton Community and Biogeochemistry of a Temperate Coastal Ecosystem: A Mesocosm Study Spisla, Carsten Taucher, Jan Bach, Lennart T. Haunost, Mathias Boxhammer, Tim King, Andrew L. Jenkins, Bettany D. Wallace, Joselynn R. Ludwig, Andrea Meyer, Jana Stange, Paul Minutolo, Fabrizio Lohbeck, Kai T. Nauendorf, Alice Kalter, Verena Lischka, Silke Sswat, Michael Dörner, Isabel Ismar-Rebitz, Stefanie M. H. Aberle, Nicole Yong, Jaw C. Bouquet, Jean-Marie Lechtenbörger, Anna K. Kohnert, Peter Krudewig, Michael Riebesell, Ulf Deutsche Forschungsgemeinschaft Norsk Institutt for Vannforskning GEOMAR Helmholtz-Zentrum für Ozeanforschung Kiel 2021 http://dx.doi.org/10.3389/fmars.2020.611157 https://www.frontiersin.org/articles/10.3389/fmars.2020.611157/full unknown Frontiers Media SA https://creativecommons.org/licenses/by/4.0/ Frontiers in Marine Science volume 7 ISSN 2296-7745 journal-article 2021 crfrontiers https://doi.org/10.3389/fmars.2020.611157 2024-06-11T04:09:08Z The oceans’ uptake of anthropogenic carbon dioxide (CO 2 ) decreases seawater pH and alters the inorganic carbon speciation – summarized in the term ocean acidification (OA). Already today, coastal regions experience episodic pH events during which surface layer pH drops below values projected for the surface ocean at the end of the century. Future OA is expected to further enhance the intensity of these coastal extreme pH events. To evaluate the influence of such episodic OA events in coastal regions, we deployed eight pelagic mesocosms for 53 days in Raunefjord, Norway, and enclosed 56–61 m 3 of local seawater containing a natural plankton community under nutrient limited post-bloom conditions. Four mesocosms were enriched with CO 2 to simulate extreme p CO 2 levels of 1978 – 2069 μatm while the other four served as untreated controls. Here, we present results from multivariate analyses on OA-induced changes in the phyto-, micro-, and mesozooplankton community structure. Pronounced differences in the plankton community emerged early in the experiment, and were amplified by enhanced top-down control throughout the study period. The plankton groups responding most profoundly to high CO 2 conditions were cyanobacteria (negative), chlorophyceae (negative), auto- and heterotrophic microzooplankton (negative), and a variety of mesozooplanktonic taxa, including copepoda (mixed), appendicularia (positive), hydrozoa (positive), fish larvae (positive), and gastropoda (negative). The restructuring of the community coincided with significant changes in the concentration and elemental stoichiometry of particulate organic matter. Results imply that extreme CO 2 events can lead to a substantial reorganization of the planktonic food web, affecting multiple trophic levels from phytoplankton to primary and secondary consumers. Article in Journal/Newspaper Ocean acidification Frontiers (Publisher) Norway Frontiers in Marine Science 7 |
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Frontiers (Publisher) |
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crfrontiers |
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description |
The oceans’ uptake of anthropogenic carbon dioxide (CO 2 ) decreases seawater pH and alters the inorganic carbon speciation – summarized in the term ocean acidification (OA). Already today, coastal regions experience episodic pH events during which surface layer pH drops below values projected for the surface ocean at the end of the century. Future OA is expected to further enhance the intensity of these coastal extreme pH events. To evaluate the influence of such episodic OA events in coastal regions, we deployed eight pelagic mesocosms for 53 days in Raunefjord, Norway, and enclosed 56–61 m 3 of local seawater containing a natural plankton community under nutrient limited post-bloom conditions. Four mesocosms were enriched with CO 2 to simulate extreme p CO 2 levels of 1978 – 2069 μatm while the other four served as untreated controls. Here, we present results from multivariate analyses on OA-induced changes in the phyto-, micro-, and mesozooplankton community structure. Pronounced differences in the plankton community emerged early in the experiment, and were amplified by enhanced top-down control throughout the study period. The plankton groups responding most profoundly to high CO 2 conditions were cyanobacteria (negative), chlorophyceae (negative), auto- and heterotrophic microzooplankton (negative), and a variety of mesozooplanktonic taxa, including copepoda (mixed), appendicularia (positive), hydrozoa (positive), fish larvae (positive), and gastropoda (negative). The restructuring of the community coincided with significant changes in the concentration and elemental stoichiometry of particulate organic matter. Results imply that extreme CO 2 events can lead to a substantial reorganization of the planktonic food web, affecting multiple trophic levels from phytoplankton to primary and secondary consumers. |
author2 |
Deutsche Forschungsgemeinschaft Norsk Institutt for Vannforskning GEOMAR Helmholtz-Zentrum für Ozeanforschung Kiel |
format |
Article in Journal/Newspaper |
author |
Spisla, Carsten Taucher, Jan Bach, Lennart T. Haunost, Mathias Boxhammer, Tim King, Andrew L. Jenkins, Bettany D. Wallace, Joselynn R. Ludwig, Andrea Meyer, Jana Stange, Paul Minutolo, Fabrizio Lohbeck, Kai T. Nauendorf, Alice Kalter, Verena Lischka, Silke Sswat, Michael Dörner, Isabel Ismar-Rebitz, Stefanie M. H. Aberle, Nicole Yong, Jaw C. Bouquet, Jean-Marie Lechtenbörger, Anna K. Kohnert, Peter Krudewig, Michael Riebesell, Ulf |
spellingShingle |
Spisla, Carsten Taucher, Jan Bach, Lennart T. Haunost, Mathias Boxhammer, Tim King, Andrew L. Jenkins, Bettany D. Wallace, Joselynn R. Ludwig, Andrea Meyer, Jana Stange, Paul Minutolo, Fabrizio Lohbeck, Kai T. Nauendorf, Alice Kalter, Verena Lischka, Silke Sswat, Michael Dörner, Isabel Ismar-Rebitz, Stefanie M. H. Aberle, Nicole Yong, Jaw C. Bouquet, Jean-Marie Lechtenbörger, Anna K. Kohnert, Peter Krudewig, Michael Riebesell, Ulf Extreme Levels of Ocean Acidification Restructure the Plankton Community and Biogeochemistry of a Temperate Coastal Ecosystem: A Mesocosm Study |
author_facet |
Spisla, Carsten Taucher, Jan Bach, Lennart T. Haunost, Mathias Boxhammer, Tim King, Andrew L. Jenkins, Bettany D. Wallace, Joselynn R. Ludwig, Andrea Meyer, Jana Stange, Paul Minutolo, Fabrizio Lohbeck, Kai T. Nauendorf, Alice Kalter, Verena Lischka, Silke Sswat, Michael Dörner, Isabel Ismar-Rebitz, Stefanie M. H. Aberle, Nicole Yong, Jaw C. Bouquet, Jean-Marie Lechtenbörger, Anna K. Kohnert, Peter Krudewig, Michael Riebesell, Ulf |
author_sort |
Spisla, Carsten |
title |
Extreme Levels of Ocean Acidification Restructure the Plankton Community and Biogeochemistry of a Temperate Coastal Ecosystem: A Mesocosm Study |
title_short |
Extreme Levels of Ocean Acidification Restructure the Plankton Community and Biogeochemistry of a Temperate Coastal Ecosystem: A Mesocosm Study |
title_full |
Extreme Levels of Ocean Acidification Restructure the Plankton Community and Biogeochemistry of a Temperate Coastal Ecosystem: A Mesocosm Study |
title_fullStr |
Extreme Levels of Ocean Acidification Restructure the Plankton Community and Biogeochemistry of a Temperate Coastal Ecosystem: A Mesocosm Study |
title_full_unstemmed |
Extreme Levels of Ocean Acidification Restructure the Plankton Community and Biogeochemistry of a Temperate Coastal Ecosystem: A Mesocosm Study |
title_sort |
extreme levels of ocean acidification restructure the plankton community and biogeochemistry of a temperate coastal ecosystem: a mesocosm study |
publisher |
Frontiers Media SA |
publishDate |
2021 |
url |
http://dx.doi.org/10.3389/fmars.2020.611157 https://www.frontiersin.org/articles/10.3389/fmars.2020.611157/full |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Frontiers in Marine Science volume 7 ISSN 2296-7745 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3389/fmars.2020.611157 |
container_title |
Frontiers in Marine Science |
container_volume |
7 |
_version_ |
1802648584574730240 |