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...
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Online Access: | http://nbn-resolving.de/urn:nbn:de:bsz:352-2-1d5gm98cyb4r80 https://doi.org/10.3389/fmars.2020.611157 |
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ftubkonstanz:oai:kops.uni-konstanz.de:123456789/52871 2024-02-11T10:07:25+01:00 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 Lohbeck, Kai 2021-01-25 application/pdf http://nbn-resolving.de/urn:nbn:de:bsz:352-2-1d5gm98cyb4r80 https://doi.org/10.3389/fmars.2020.611157 eng eng http://nbn-resolving.de/urn:nbn:de:bsz:352-2-1d5gm98cyb4r80 http://dx.doi.org/10.3389/fmars.2020.611157 1748494589 http://creativecommons.org/licenses/by/4.0/ Frontiers in Marine Science. Frontiers. 2021, 7, 611157. eISSN 2296-7745. Available under: doi:10.3389/fmars.2020.611157 climate change ocean acidification plankton ecology biogeochemistry coastal ecosystem mesocosm ddc:570 doc-type:article doc-type:Text 2021 ftubkonstanz https://doi.org/10.3389/fmars.2020.611157 2024-01-21T23:56:15Z 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 pCO 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. published Article in Journal/Newspaper Ocean acidification KOPS - The Institutional Repository of the University of Konstanz Norway Frontiers in Marine Science 7 |
institution |
Open Polar |
collection |
KOPS - The Institutional Repository of the University of Konstanz |
op_collection_id |
ftubkonstanz |
language |
English |
topic |
climate change ocean acidification plankton ecology biogeochemistry coastal ecosystem mesocosm ddc:570 |
spellingShingle |
climate change ocean acidification plankton ecology biogeochemistry coastal ecosystem mesocosm ddc:570 Spisla, Carsten Taucher, Jan Bach, Lennart T. Haunost, Mathias Boxhammer, Tim King, Andrew L. Jenkins, Bettany D. Wallace, Joselynn R. Ludwig, Andrea Lohbeck, Kai Extreme Levels of Ocean Acidification Restructure the Plankton Community and Biogeochemistry of a Temperate Coastal Ecosystem : A Mesocosm Study |
topic_facet |
climate change ocean acidification plankton ecology biogeochemistry coastal ecosystem mesocosm ddc:570 |
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 pCO 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. published |
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 Lohbeck, Kai |
author_facet |
Spisla, Carsten Taucher, Jan Bach, Lennart T. Haunost, Mathias Boxhammer, Tim King, Andrew L. Jenkins, Bettany D. Wallace, Joselynn R. Ludwig, Andrea Lohbeck, Kai |
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 |
publishDate |
2021 |
url |
http://nbn-resolving.de/urn:nbn:de:bsz:352-2-1d5gm98cyb4r80 https://doi.org/10.3389/fmars.2020.611157 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Frontiers in Marine Science. Frontiers. 2021, 7, 611157. eISSN 2296-7745. Available under: doi:10.3389/fmars.2020.611157 |
op_relation |
http://nbn-resolving.de/urn:nbn:de:bsz:352-2-1d5gm98cyb4r80 http://dx.doi.org/10.3389/fmars.2020.611157 1748494589 |
op_rights |
http://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 |
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1790605982177427456 |