Changing carbon-to-nitrogen ratios of organic-matter export under ocean acidification
Ocean acidification (OA) will affect marine biotas from the organism to the ecosystem level. Yet, the consequences for the biological carbon pump and thereby the oceanic sink for atmospheric CO2 are still unclear. Here we show that OA considerably alters the C/N ratio of organic-matter export (C/Nex...
Published in: | Nature Climate Change |
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Format: | Article in Journal/Newspaper |
Language: | English German |
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Nature Research
2021
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Online Access: | https://oceanrep.geomar.de/id/eprint/50780/ https://oceanrep.geomar.de/id/eprint/50780/1/s41558-020-00915-5.pdf https://oceanrep.geomar.de/id/eprint/50780/2/41558_2020_915_MOESM1_ESM.pdf https://oceanrep.geomar.de/id/eprint/50780/13/pm_2020_58_Neue-Erkenntnisse-zu-Planktonreaktion-auf-CO2.pdf https://oceanrep.geomar.de/id/eprint/50780/19/pm_2020_58_The-uncertain-future-of-the-oceans.pdf https://doi.org/10.1038/s41558-020-00915-5 |
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ftoceanrep:oai:oceanrep.geomar.de:50780 2024-02-11T10:07:25+01:00 Changing carbon-to-nitrogen ratios of organic-matter export under ocean acidification Taucher, Jan Boxhammer, Tim Bach, Lennart T. Paul, Allanah J. Schartau, Markus Stange, Paul Riebesell, Ulf 2021-01 text https://oceanrep.geomar.de/id/eprint/50780/ https://oceanrep.geomar.de/id/eprint/50780/1/s41558-020-00915-5.pdf https://oceanrep.geomar.de/id/eprint/50780/2/41558_2020_915_MOESM1_ESM.pdf https://oceanrep.geomar.de/id/eprint/50780/13/pm_2020_58_Neue-Erkenntnisse-zu-Planktonreaktion-auf-CO2.pdf https://oceanrep.geomar.de/id/eprint/50780/19/pm_2020_58_The-uncertain-future-of-the-oceans.pdf https://doi.org/10.1038/s41558-020-00915-5 en de eng ger Nature Research https://oceanrep.geomar.de/id/eprint/50780/1/s41558-020-00915-5.pdf https://oceanrep.geomar.de/id/eprint/50780/2/41558_2020_915_MOESM1_ESM.pdf https://oceanrep.geomar.de/id/eprint/50780/13/pm_2020_58_Neue-Erkenntnisse-zu-Planktonreaktion-auf-CO2.pdf https://oceanrep.geomar.de/id/eprint/50780/19/pm_2020_58_The-uncertain-future-of-the-oceans.pdf Taucher, J. , Boxhammer, T. , Bach, L. T. , Paul, A. J. , Schartau, M. , Stange, P. and Riebesell, U. (2021) Changing carbon-to-nitrogen ratios of organic-matter export under ocean acidification. Nature Climate Change, 11 . pp. 52-57. DOI 10.1038/s41558-020-00915-5 <https://doi.org/10.1038/s41558-020-00915-5>. doi:10.1038/s41558-020-00915-5 cc_by_4.0 info:eu-repo/semantics/restrictedAccess Article PeerReviewed info:eu-repo/semantics/article 2021 ftoceanrep https://doi.org/10.1038/s41558-020-00915-5 2024-01-15T00:22:42Z Ocean acidification (OA) will affect marine biotas from the organism to the ecosystem level. Yet, the consequences for the biological carbon pump and thereby the oceanic sink for atmospheric CO2 are still unclear. Here we show that OA considerably alters the C/N ratio of organic-matter export (C/Nexport), a key factor determining efficiency of the biological pump. By synthesizing sediment-trap data from in situ mesocosm studies in different marine biomes, we find distinct but highly variable impacts of OA on C/Nexport, reaching up to a 20% increase/decrease under partial pressure of CO2 (pCO2) conditions projected for 2100. These changes are driven by pCO2 effects on a variety of plankton taxa and corresponding shifts in food-web structure. Notably, our findings suggest a pivotal role of heterotrophic processes in controlling the response of C/Nexport to OA, thus contradicting the paradigm of primary producers as the principal driver of biogeochemical responses to ocean change. Article in Journal/Newspaper Ocean acidification OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Nature Climate Change 11 1 52 57 |
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Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English German |
description |
Ocean acidification (OA) will affect marine biotas from the organism to the ecosystem level. Yet, the consequences for the biological carbon pump and thereby the oceanic sink for atmospheric CO2 are still unclear. Here we show that OA considerably alters the C/N ratio of organic-matter export (C/Nexport), a key factor determining efficiency of the biological pump. By synthesizing sediment-trap data from in situ mesocosm studies in different marine biomes, we find distinct but highly variable impacts of OA on C/Nexport, reaching up to a 20% increase/decrease under partial pressure of CO2 (pCO2) conditions projected for 2100. These changes are driven by pCO2 effects on a variety of plankton taxa and corresponding shifts in food-web structure. Notably, our findings suggest a pivotal role of heterotrophic processes in controlling the response of C/Nexport to OA, thus contradicting the paradigm of primary producers as the principal driver of biogeochemical responses to ocean change. |
format |
Article in Journal/Newspaper |
author |
Taucher, Jan Boxhammer, Tim Bach, Lennart T. Paul, Allanah J. Schartau, Markus Stange, Paul Riebesell, Ulf |
spellingShingle |
Taucher, Jan Boxhammer, Tim Bach, Lennart T. Paul, Allanah J. Schartau, Markus Stange, Paul Riebesell, Ulf Changing carbon-to-nitrogen ratios of organic-matter export under ocean acidification |
author_facet |
Taucher, Jan Boxhammer, Tim Bach, Lennart T. Paul, Allanah J. Schartau, Markus Stange, Paul Riebesell, Ulf |
author_sort |
Taucher, Jan |
title |
Changing carbon-to-nitrogen ratios of organic-matter export under ocean acidification |
title_short |
Changing carbon-to-nitrogen ratios of organic-matter export under ocean acidification |
title_full |
Changing carbon-to-nitrogen ratios of organic-matter export under ocean acidification |
title_fullStr |
Changing carbon-to-nitrogen ratios of organic-matter export under ocean acidification |
title_full_unstemmed |
Changing carbon-to-nitrogen ratios of organic-matter export under ocean acidification |
title_sort |
changing carbon-to-nitrogen ratios of organic-matter export under ocean acidification |
publisher |
Nature Research |
publishDate |
2021 |
url |
https://oceanrep.geomar.de/id/eprint/50780/ https://oceanrep.geomar.de/id/eprint/50780/1/s41558-020-00915-5.pdf https://oceanrep.geomar.de/id/eprint/50780/2/41558_2020_915_MOESM1_ESM.pdf https://oceanrep.geomar.de/id/eprint/50780/13/pm_2020_58_Neue-Erkenntnisse-zu-Planktonreaktion-auf-CO2.pdf https://oceanrep.geomar.de/id/eprint/50780/19/pm_2020_58_The-uncertain-future-of-the-oceans.pdf https://doi.org/10.1038/s41558-020-00915-5 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
https://oceanrep.geomar.de/id/eprint/50780/1/s41558-020-00915-5.pdf https://oceanrep.geomar.de/id/eprint/50780/2/41558_2020_915_MOESM1_ESM.pdf https://oceanrep.geomar.de/id/eprint/50780/13/pm_2020_58_Neue-Erkenntnisse-zu-Planktonreaktion-auf-CO2.pdf https://oceanrep.geomar.de/id/eprint/50780/19/pm_2020_58_The-uncertain-future-of-the-oceans.pdf Taucher, J. , Boxhammer, T. , Bach, L. T. , Paul, A. J. , Schartau, M. , Stange, P. and Riebesell, U. (2021) Changing carbon-to-nitrogen ratios of organic-matter export under ocean acidification. Nature Climate Change, 11 . pp. 52-57. DOI 10.1038/s41558-020-00915-5 <https://doi.org/10.1038/s41558-020-00915-5>. doi:10.1038/s41558-020-00915-5 |
op_rights |
cc_by_4.0 info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1038/s41558-020-00915-5 |
container_title |
Nature Climate Change |
container_volume |
11 |
container_issue |
1 |
container_start_page |
52 |
op_container_end_page |
57 |
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1790605971343540224 |