The appendicularian Oikopleura dioica can enhance carbon export in a high CO2 ocean
Gelatinous zooplankton are increasingly recognized to play a key role in the ocean's biological carbon pump. Appendicularians, a class of pelagic tunicates, are among the most abundant gelatinous plankton in the ocean, but it is an open question how their contribution to carbon export might cha...
Published in: | Global Change Biology |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Online Access: | https://oceanrep.geomar.de/id/eprint/59575/ https://oceanrep.geomar.de/id/eprint/59575/7/Global%20Change%20Biology%20-%202023%20-%20Taucher%20-%20The%20appendicularian%20Oikopleura%20dioica%20can%20enhance%20carbon%20export%20in%20a%20high%20CO2.pdf https://onlinelibrary.wiley.com/doi/10.1111/gcb.17020 https://doi.org/10.1111/gcb.17020 |
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ftoceanrep:oai:oceanrep.geomar.de:59575 2024-01-21T10:09:18+01:00 The appendicularian Oikopleura dioica can enhance carbon export in a high CO2 ocean Taucher, Jan Lechtenbörger, Anna A. Bouquet, Jean‐Marie Spisla, Carsten Boxhammer, Tim Minutolo, Fabrizio Bach, Lennart Thomas Lohbeck, Kai T. Sswat, Michael Dörner, Isabel Ismar-Rebitz, Stefanie M. H. Thompson, Eric M. Riebesell, Ulf 2024-01 text https://oceanrep.geomar.de/id/eprint/59575/ https://oceanrep.geomar.de/id/eprint/59575/7/Global%20Change%20Biology%20-%202023%20-%20Taucher%20-%20The%20appendicularian%20Oikopleura%20dioica%20can%20enhance%20carbon%20export%20in%20a%20high%20CO2.pdf https://onlinelibrary.wiley.com/doi/10.1111/gcb.17020 https://doi.org/10.1111/gcb.17020 en eng Wiley https://oceanrep.geomar.de/id/eprint/59575/7/Global%20Change%20Biology%20-%202023%20-%20Taucher%20-%20The%20appendicularian%20Oikopleura%20dioica%20can%20enhance%20carbon%20export%20in%20a%20high%20CO2.pdf Taucher, J. , Lechtenbörger, A. A., Bouquet, J., Spisla, C., Boxhammer, T. , Minutolo, F., Bach, L. T., Lohbeck, K. T., Sswat, M. , Dörner, I., Ismar-Rebitz, S. M. H. , Thompson, E. M. and Riebesell, U. (2024) The appendicularian Oikopleura dioica can enhance carbon export in a high CO2 ocean. Open Access Global Change Biology, 30 (1). Art.Nr. e17020. DOI 10.1111/gcb.17020 <https://doi.org/10.1111/gcb.17020>. doi:10.1111/gcb.17020 cc_by_nc_nd_4.0 info:eu-repo/semantics/openAccess Article PeerReviewed 1481 ftoceanrep https://doi.org/10.1111/gcb.17020 2023-12-25T00:22:50Z Gelatinous zooplankton are increasingly recognized to play a key role in the ocean's biological carbon pump. Appendicularians, a class of pelagic tunicates, are among the most abundant gelatinous plankton in the ocean, but it is an open question how their contribution to carbon export might change in the future. Here, we conducted an experiment with large volume in situ mesocosms (~55–60 m3 and 21 m depth) to investigate how ocean acidification (OA) extreme events affect food web structure and carbon export in a natural plankton community, particularly focusing on the keystone species Oikopleura dioica, a globally abundant appendicularian. We found a profound influence of O. dioica on vertical carbon fluxes, particularly during a short but intense bloom period in the high CO2 treatment, during which carbon export was 42%–64% higher than under ambient conditions. This elevated flux was mostly driven by an almost twofold increase in O. dioica biomass under high CO2. This rapid population increase was linked to enhanced fecundity (+20%) that likely resulted from physiological benefits of low pH conditions. The resulting competitive advantage of O. dioica resulted in enhanced grazing on phytoplankton and transfer of this consumed biomass into sinking particles. Using a simple carbon flux model for O. dioica, we estimate that high CO2 doubled the carbon flux of discarded mucous houses and fecal pellets, accounting for up to 39% of total carbon export from the ecosystem during the bloom. Considering the wide geographic distribution of O. dioica, our findings suggest that appendicularians may become an increasingly important vector of carbon export with ongoing OA. Article in Journal/Newspaper Ocean acidification OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Global Change Biology 30 1 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
Gelatinous zooplankton are increasingly recognized to play a key role in the ocean's biological carbon pump. Appendicularians, a class of pelagic tunicates, are among the most abundant gelatinous plankton in the ocean, but it is an open question how their contribution to carbon export might change in the future. Here, we conducted an experiment with large volume in situ mesocosms (~55–60 m3 and 21 m depth) to investigate how ocean acidification (OA) extreme events affect food web structure and carbon export in a natural plankton community, particularly focusing on the keystone species Oikopleura dioica, a globally abundant appendicularian. We found a profound influence of O. dioica on vertical carbon fluxes, particularly during a short but intense bloom period in the high CO2 treatment, during which carbon export was 42%–64% higher than under ambient conditions. This elevated flux was mostly driven by an almost twofold increase in O. dioica biomass under high CO2. This rapid population increase was linked to enhanced fecundity (+20%) that likely resulted from physiological benefits of low pH conditions. The resulting competitive advantage of O. dioica resulted in enhanced grazing on phytoplankton and transfer of this consumed biomass into sinking particles. Using a simple carbon flux model for O. dioica, we estimate that high CO2 doubled the carbon flux of discarded mucous houses and fecal pellets, accounting for up to 39% of total carbon export from the ecosystem during the bloom. Considering the wide geographic distribution of O. dioica, our findings suggest that appendicularians may become an increasingly important vector of carbon export with ongoing OA. |
format |
Article in Journal/Newspaper |
author |
Taucher, Jan Lechtenbörger, Anna A. Bouquet, Jean‐Marie Spisla, Carsten Boxhammer, Tim Minutolo, Fabrizio Bach, Lennart Thomas Lohbeck, Kai T. Sswat, Michael Dörner, Isabel Ismar-Rebitz, Stefanie M. H. Thompson, Eric M. Riebesell, Ulf |
spellingShingle |
Taucher, Jan Lechtenbörger, Anna A. Bouquet, Jean‐Marie Spisla, Carsten Boxhammer, Tim Minutolo, Fabrizio Bach, Lennart Thomas Lohbeck, Kai T. Sswat, Michael Dörner, Isabel Ismar-Rebitz, Stefanie M. H. Thompson, Eric M. Riebesell, Ulf The appendicularian Oikopleura dioica can enhance carbon export in a high CO2 ocean |
author_facet |
Taucher, Jan Lechtenbörger, Anna A. Bouquet, Jean‐Marie Spisla, Carsten Boxhammer, Tim Minutolo, Fabrizio Bach, Lennart Thomas Lohbeck, Kai T. Sswat, Michael Dörner, Isabel Ismar-Rebitz, Stefanie M. H. Thompson, Eric M. Riebesell, Ulf |
author_sort |
Taucher, Jan |
title |
The appendicularian Oikopleura dioica can enhance carbon export in a high CO2 ocean |
title_short |
The appendicularian Oikopleura dioica can enhance carbon export in a high CO2 ocean |
title_full |
The appendicularian Oikopleura dioica can enhance carbon export in a high CO2 ocean |
title_fullStr |
The appendicularian Oikopleura dioica can enhance carbon export in a high CO2 ocean |
title_full_unstemmed |
The appendicularian Oikopleura dioica can enhance carbon export in a high CO2 ocean |
title_sort |
appendicularian oikopleura dioica can enhance carbon export in a high co2 ocean |
publisher |
Wiley |
publishDate |
1481 |
url |
https://oceanrep.geomar.de/id/eprint/59575/ https://oceanrep.geomar.de/id/eprint/59575/7/Global%20Change%20Biology%20-%202023%20-%20Taucher%20-%20The%20appendicularian%20Oikopleura%20dioica%20can%20enhance%20carbon%20export%20in%20a%20high%20CO2.pdf https://onlinelibrary.wiley.com/doi/10.1111/gcb.17020 https://doi.org/10.1111/gcb.17020 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
https://oceanrep.geomar.de/id/eprint/59575/7/Global%20Change%20Biology%20-%202023%20-%20Taucher%20-%20The%20appendicularian%20Oikopleura%20dioica%20can%20enhance%20carbon%20export%20in%20a%20high%20CO2.pdf Taucher, J. , Lechtenbörger, A. A., Bouquet, J., Spisla, C., Boxhammer, T. , Minutolo, F., Bach, L. T., Lohbeck, K. T., Sswat, M. , Dörner, I., Ismar-Rebitz, S. M. H. , Thompson, E. M. and Riebesell, U. (2024) The appendicularian Oikopleura dioica can enhance carbon export in a high CO2 ocean. Open Access Global Change Biology, 30 (1). Art.Nr. e17020. DOI 10.1111/gcb.17020 <https://doi.org/10.1111/gcb.17020>. doi:10.1111/gcb.17020 |
op_rights |
cc_by_nc_nd_4.0 info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1111/gcb.17020 |
container_title |
Global Change Biology |
container_volume |
30 |
container_issue |
1 |
_version_ |
1788700274010882048 |