Computing the carbonate chemistry of the coral calcifying medium and its response to ocean acidification
International audience Critical to determining vulnerability or resilience of reef corals to Ocean Acidification (OA) is a clearer understanding of the extent to which corals can control carbonate chemistry in their Extracellular Calcifying Medium (ECM) where the CaCO3 skeleton is produced. Here, we...
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ftinsu:oai:HAL:hal-01518288v1 2024-04-14T08:17:37+00:00 Computing the carbonate chemistry of the coral calcifying medium and its response to ocean acidification Raybaud, Virginie Tambutté, Sylvie Ferrier-Pagès, Christine Reynaud, Stéphanie Venn, Alexander A. Tambutté, Éric Nival, Paul Allemand, Denis Observatoire océanologique de Villefranche-sur-mer (OOVM) Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Ecosystèmes Côtiers Marins et Réponses aux Stress (ECOMERS) Université Nice Sophia Antipolis (1965 - 2019) (UNS)-Centre National de la Recherche Scientifique (CNRS)-Université Côte d'Azur (UniCA) Marine Biology Department Monaco Centre Scientifique de Monaco BIOSENSIB Monaco Laboratoire d'océanographie de Villefranche (LOV) Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) 2017 https://hal.sorbonne-universite.fr/hal-01518288 https://hal.sorbonne-universite.fr/hal-01518288/document https://hal.sorbonne-universite.fr/hal-01518288/file/Raybaud_Computing_the.pdf https://doi.org/10.1016/j.jtbi.2017.04.028 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jtbi.2017.04.028 hal-01518288 https://hal.sorbonne-universite.fr/hal-01518288 https://hal.sorbonne-universite.fr/hal-01518288/document https://hal.sorbonne-universite.fr/hal-01518288/file/Raybaud_Computing_the.pdf doi:10.1016/j.jtbi.2017.04.028 info:eu-repo/semantics/OpenAccess ISSN: 0022-5193 EISSN: 1095-8541 Journal of Theoretical Biology https://hal.sorbonne-universite.fr/hal-01518288 Journal of Theoretical Biology, 2017, ⟨10.1016/j.jtbi.2017.04.028⟩ Aragonite Saturation State Calcification Calcifying Fluid Scleractinian Corals Ocean Acidification [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [CHIM.OTHE]Chemical Sciences/Other info:eu-repo/semantics/article Journal articles 2017 ftinsu https://doi.org/10.1016/j.jtbi.2017.04.028 2024-03-21T17:23:42Z International audience Critical to determining vulnerability or resilience of reef corals to Ocean Acidification (OA) is a clearer understanding of the extent to which corals can control carbonate chemistry in their Extracellular Calcifying Medium (ECM) where the CaCO3 skeleton is produced. Here, we employ a mathematical framework to calculate ECM aragonite saturation state (Ωarag.(ECM) and carbonate system ion concentration using measurements of calcification rate, seawater characteristics (temperature, salinity and pH) and ECM pH (pH(ECM))). Our calculations of ECM carbonate chemistry at current-day seawater pH, indicate that Ωarag.(ECM) ranges from ∼10 to 38 (mean 20.41), i.e. about 5 to 6-fold higher than seawater. Accordingly, Dissolved Inorganic Carbon (DIC) and Total Alkalinity (TA) were calculated to be around 3 times higher in the ECM than in seawater. We also assessed the effects of acidification on ECM chemical properties of the coral Stylophora pistillata. At reduced seawater pH our calculations indicate that Ωarag.(ECM) remains almost constant. DIC(ECM) and TA(ECM) gradually increase as seawater pH declines, reaching values about 5 to 6-fold higher than in seawater, respectively for DIC and TA. We propose that these ECM characteristics buffer the effect of acidification and explain why certain corals continue to produce CaCO3 even when seawater chemistry is less favourable. Article in Journal/Newspaper Ocean acidification Institut national des sciences de l'Univers: HAL-INSU Journal of Theoretical Biology 424 26 36 |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
Aragonite Saturation State Calcification Calcifying Fluid Scleractinian Corals Ocean Acidification [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [CHIM.OTHE]Chemical Sciences/Other |
spellingShingle |
Aragonite Saturation State Calcification Calcifying Fluid Scleractinian Corals Ocean Acidification [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [CHIM.OTHE]Chemical Sciences/Other Raybaud, Virginie Tambutté, Sylvie Ferrier-Pagès, Christine Reynaud, Stéphanie Venn, Alexander A. Tambutté, Éric Nival, Paul Allemand, Denis Computing the carbonate chemistry of the coral calcifying medium and its response to ocean acidification |
topic_facet |
Aragonite Saturation State Calcification Calcifying Fluid Scleractinian Corals Ocean Acidification [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [CHIM.OTHE]Chemical Sciences/Other |
description |
International audience Critical to determining vulnerability or resilience of reef corals to Ocean Acidification (OA) is a clearer understanding of the extent to which corals can control carbonate chemistry in their Extracellular Calcifying Medium (ECM) where the CaCO3 skeleton is produced. Here, we employ a mathematical framework to calculate ECM aragonite saturation state (Ωarag.(ECM) and carbonate system ion concentration using measurements of calcification rate, seawater characteristics (temperature, salinity and pH) and ECM pH (pH(ECM))). Our calculations of ECM carbonate chemistry at current-day seawater pH, indicate that Ωarag.(ECM) ranges from ∼10 to 38 (mean 20.41), i.e. about 5 to 6-fold higher than seawater. Accordingly, Dissolved Inorganic Carbon (DIC) and Total Alkalinity (TA) were calculated to be around 3 times higher in the ECM than in seawater. We also assessed the effects of acidification on ECM chemical properties of the coral Stylophora pistillata. At reduced seawater pH our calculations indicate that Ωarag.(ECM) remains almost constant. DIC(ECM) and TA(ECM) gradually increase as seawater pH declines, reaching values about 5 to 6-fold higher than in seawater, respectively for DIC and TA. We propose that these ECM characteristics buffer the effect of acidification and explain why certain corals continue to produce CaCO3 even when seawater chemistry is less favourable. |
author2 |
Observatoire océanologique de Villefranche-sur-mer (OOVM) Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Ecosystèmes Côtiers Marins et Réponses aux Stress (ECOMERS) Université Nice Sophia Antipolis (1965 - 2019) (UNS)-Centre National de la Recherche Scientifique (CNRS)-Université Côte d'Azur (UniCA) Marine Biology Department Monaco Centre Scientifique de Monaco BIOSENSIB Monaco Laboratoire d'océanographie de Villefranche (LOV) Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Raybaud, Virginie Tambutté, Sylvie Ferrier-Pagès, Christine Reynaud, Stéphanie Venn, Alexander A. Tambutté, Éric Nival, Paul Allemand, Denis |
author_facet |
Raybaud, Virginie Tambutté, Sylvie Ferrier-Pagès, Christine Reynaud, Stéphanie Venn, Alexander A. Tambutté, Éric Nival, Paul Allemand, Denis |
author_sort |
Raybaud, Virginie |
title |
Computing the carbonate chemistry of the coral calcifying medium and its response to ocean acidification |
title_short |
Computing the carbonate chemistry of the coral calcifying medium and its response to ocean acidification |
title_full |
Computing the carbonate chemistry of the coral calcifying medium and its response to ocean acidification |
title_fullStr |
Computing the carbonate chemistry of the coral calcifying medium and its response to ocean acidification |
title_full_unstemmed |
Computing the carbonate chemistry of the coral calcifying medium and its response to ocean acidification |
title_sort |
computing the carbonate chemistry of the coral calcifying medium and its response to ocean acidification |
publisher |
HAL CCSD |
publishDate |
2017 |
url |
https://hal.sorbonne-universite.fr/hal-01518288 https://hal.sorbonne-universite.fr/hal-01518288/document https://hal.sorbonne-universite.fr/hal-01518288/file/Raybaud_Computing_the.pdf https://doi.org/10.1016/j.jtbi.2017.04.028 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
ISSN: 0022-5193 EISSN: 1095-8541 Journal of Theoretical Biology https://hal.sorbonne-universite.fr/hal-01518288 Journal of Theoretical Biology, 2017, ⟨10.1016/j.jtbi.2017.04.028⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jtbi.2017.04.028 hal-01518288 https://hal.sorbonne-universite.fr/hal-01518288 https://hal.sorbonne-universite.fr/hal-01518288/document https://hal.sorbonne-universite.fr/hal-01518288/file/Raybaud_Computing_the.pdf doi:10.1016/j.jtbi.2017.04.028 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1016/j.jtbi.2017.04.028 |
container_title |
Journal of Theoretical Biology |
container_volume |
424 |
container_start_page |
26 |
op_container_end_page |
36 |
_version_ |
1796316853075705856 |