Constraints on coccolithophores under ocean acidification obtained from boron and carbon geochemical approaches
International audience Ocean acidification (OA) appears to have diverse impacts on calcareous coccolithophores, but the cellular processes underlying these responses are not well understood. Here we use stable boron and carbon isotopes, B/Ca ratios, as well as inorganic and organic carbon production...
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ftunivbrest:oai:HAL:hal-03452046v1 2024-02-11T10:07:24+01:00 Constraints on coccolithophores under ocean acidification obtained from boron and carbon geochemical approaches Liu, Yi-Wei Rokitta, Sebastian Rost, Björn Eagle, Robert A. Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Institute of Earth Sciences, Academia Sinica, Taipei, Taiwan Alfred Wegener Institute for Polar and Marine Research (AWI) ANR-17-EURE-0015,ISBlue,Interdisciplinary Graduate School for the Blue planet(2017) 2021-12-16 https://hal.univ-brest.fr/hal-03452046 https://hal.univ-brest.fr/hal-03452046/document https://hal.univ-brest.fr/hal-03452046/file/1-s2.0-S0016703721005676-main.pdf https://doi.org/10.1016/j.gca.2021.09.025 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.gca.2021.09.025 hal-03452046 https://hal.univ-brest.fr/hal-03452046 https://hal.univ-brest.fr/hal-03452046/document https://hal.univ-brest.fr/hal-03452046/file/1-s2.0-S0016703721005676-main.pdf doi:10.1016/j.gca.2021.09.025 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 0016-7037 EISSN: 0016-7037 Geochimica et Cosmochimica Acta https://hal.univ-brest.fr/hal-03452046 Geochimica et Cosmochimica Acta, 2021, 315, pp.317-332. ⟨10.1016/j.gca.2021.09.025⟩ Boron isotopes Carbon isotopes Coccolithophores Ocean acidification [SDE]Environmental Sciences [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2021 ftunivbrest https://doi.org/10.1016/j.gca.2021.09.025 2024-01-23T23:38:49Z International audience Ocean acidification (OA) appears to have diverse impacts on calcareous coccolithophores, but the cellular processes underlying these responses are not well understood. Here we use stable boron and carbon isotopes, B/Ca ratios, as well as inorganic and organic carbon production rates to investigate the carbon utilization and the internal pH regulation at the site of calcification in Emiliania huxleyi, Calcidiscus leptoporus and Pleurochrysis carterae cultured over a wide pCO2 range (180–1000 μatm). Despite large variability, the geochemistry data indicate species-specific modes of pH control and differences in the utilization of inorganic carbon. Boron isotope data suggest that all three species generally upregulate the pH of the calcification fluid (pHCF) compared to surrounding seawater, which coincides with relatively constant growth rates and cellular ratios of inorganic to organic carbon. Furthermore, species exhibit different strategies in regulating their pHCF, i.e., two species maintain homeostasis (pHCF = ∼8.7), while one species shows a constant offset to the surrounding seawater (ΔpH = ∼0.6 units) over the entire tested pCO2 range. In addition to these different strategies, carbon isotope data suggests that high plasticity in the utilization of dissolved inorganic carbon might be an explanation for species-specific differences in coccolithophore responses to OA. Article in Journal/Newspaper Ocean acidification Université de Bretagne Occidentale: HAL Geochimica et Cosmochimica Acta 315 317 332 |
institution |
Open Polar |
collection |
Université de Bretagne Occidentale: HAL |
op_collection_id |
ftunivbrest |
language |
English |
topic |
Boron isotopes Carbon isotopes Coccolithophores Ocean acidification [SDE]Environmental Sciences [SDU]Sciences of the Universe [physics] |
spellingShingle |
Boron isotopes Carbon isotopes Coccolithophores Ocean acidification [SDE]Environmental Sciences [SDU]Sciences of the Universe [physics] Liu, Yi-Wei Rokitta, Sebastian Rost, Björn Eagle, Robert A. Constraints on coccolithophores under ocean acidification obtained from boron and carbon geochemical approaches |
topic_facet |
Boron isotopes Carbon isotopes Coccolithophores Ocean acidification [SDE]Environmental Sciences [SDU]Sciences of the Universe [physics] |
description |
International audience Ocean acidification (OA) appears to have diverse impacts on calcareous coccolithophores, but the cellular processes underlying these responses are not well understood. Here we use stable boron and carbon isotopes, B/Ca ratios, as well as inorganic and organic carbon production rates to investigate the carbon utilization and the internal pH regulation at the site of calcification in Emiliania huxleyi, Calcidiscus leptoporus and Pleurochrysis carterae cultured over a wide pCO2 range (180–1000 μatm). Despite large variability, the geochemistry data indicate species-specific modes of pH control and differences in the utilization of inorganic carbon. Boron isotope data suggest that all three species generally upregulate the pH of the calcification fluid (pHCF) compared to surrounding seawater, which coincides with relatively constant growth rates and cellular ratios of inorganic to organic carbon. Furthermore, species exhibit different strategies in regulating their pHCF, i.e., two species maintain homeostasis (pHCF = ∼8.7), while one species shows a constant offset to the surrounding seawater (ΔpH = ∼0.6 units) over the entire tested pCO2 range. In addition to these different strategies, carbon isotope data suggests that high plasticity in the utilization of dissolved inorganic carbon might be an explanation for species-specific differences in coccolithophore responses to OA. |
author2 |
Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Institute of Earth Sciences, Academia Sinica, Taipei, Taiwan Alfred Wegener Institute for Polar and Marine Research (AWI) ANR-17-EURE-0015,ISBlue,Interdisciplinary Graduate School for the Blue planet(2017) |
format |
Article in Journal/Newspaper |
author |
Liu, Yi-Wei Rokitta, Sebastian Rost, Björn Eagle, Robert A. |
author_facet |
Liu, Yi-Wei Rokitta, Sebastian Rost, Björn Eagle, Robert A. |
author_sort |
Liu, Yi-Wei |
title |
Constraints on coccolithophores under ocean acidification obtained from boron and carbon geochemical approaches |
title_short |
Constraints on coccolithophores under ocean acidification obtained from boron and carbon geochemical approaches |
title_full |
Constraints on coccolithophores under ocean acidification obtained from boron and carbon geochemical approaches |
title_fullStr |
Constraints on coccolithophores under ocean acidification obtained from boron and carbon geochemical approaches |
title_full_unstemmed |
Constraints on coccolithophores under ocean acidification obtained from boron and carbon geochemical approaches |
title_sort |
constraints on coccolithophores under ocean acidification obtained from boron and carbon geochemical approaches |
publisher |
HAL CCSD |
publishDate |
2021 |
url |
https://hal.univ-brest.fr/hal-03452046 https://hal.univ-brest.fr/hal-03452046/document https://hal.univ-brest.fr/hal-03452046/file/1-s2.0-S0016703721005676-main.pdf https://doi.org/10.1016/j.gca.2021.09.025 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
ISSN: 0016-7037 EISSN: 0016-7037 Geochimica et Cosmochimica Acta https://hal.univ-brest.fr/hal-03452046 Geochimica et Cosmochimica Acta, 2021, 315, pp.317-332. ⟨10.1016/j.gca.2021.09.025⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.gca.2021.09.025 hal-03452046 https://hal.univ-brest.fr/hal-03452046 https://hal.univ-brest.fr/hal-03452046/document https://hal.univ-brest.fr/hal-03452046/file/1-s2.0-S0016703721005676-main.pdf doi:10.1016/j.gca.2021.09.025 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1016/j.gca.2021.09.025 |
container_title |
Geochimica et Cosmochimica Acta |
container_volume |
315 |
container_start_page |
317 |
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332 |
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