Constraints on coccolithophores under ocean acidification obtained from boron and carbon geochemical approaches
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 t...
Published in: | Geochimica et Cosmochimica Acta |
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ftarchimer:oai:archimer.ifremer.fr:83679 2023-05-15T17:49:54+02:00 Constraints on coccolithophores under ocean acidification obtained from boron and carbon geochemical approaches Liu, Yi+wei Rokitta, Sebastian D Rost, Björn Eagle, Robert A. 2021-12 application/pdf https://archimer.ifremer.fr/doc/00725/83679/88726.pdf https://archimer.ifremer.fr/doc/00725/83679/89479.xlsx https://archimer.ifremer.fr/doc/00725/83679/89480.docx https://doi.org/10.1016/j.gca.2021.09.025 https://archimer.ifremer.fr/doc/00725/83679/ eng eng Elsevier BV https://archimer.ifremer.fr/doc/00725/83679/88726.pdf https://archimer.ifremer.fr/doc/00725/83679/89479.xlsx https://archimer.ifremer.fr/doc/00725/83679/89480.docx doi:10.1016/j.gca.2021.09.025 https://archimer.ifremer.fr/doc/00725/83679/ info:eu-repo/semantics/openAccess restricted use Geochimica Et Cosmochimica Acta (0016-7037) (Elsevier BV), 2021-12 , Vol. 315 , P. 317-332 Ocean acidification Coccolithophores Carbon isotopes Boron isotopes text Publication info:eu-repo/semantics/article 2021 ftarchimer https://doi.org/10.1016/j.gca.2021.09.025 2022-05-17T22:50:00Z 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, Pleurochrysis carterae and Calcidiscus leptoporus cultured over a wide pCO2 range (180 to 1000 atm). 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 Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Geochimica et Cosmochimica Acta |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
topic |
Ocean acidification Coccolithophores Carbon isotopes Boron isotopes |
spellingShingle |
Ocean acidification Coccolithophores Carbon isotopes Boron isotopes Liu, Yi+wei Rokitta, Sebastian D Rost, Björn Eagle, Robert A. Constraints on coccolithophores under ocean acidification obtained from boron and carbon geochemical approaches |
topic_facet |
Ocean acidification Coccolithophores Carbon isotopes Boron isotopes |
description |
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, Pleurochrysis carterae and Calcidiscus leptoporus cultured over a wide pCO2 range (180 to 1000 atm). 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. |
format |
Article in Journal/Newspaper |
author |
Liu, Yi+wei Rokitta, Sebastian D Rost, Björn Eagle, Robert A. |
author_facet |
Liu, Yi+wei Rokitta, Sebastian D 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 |
Elsevier BV |
publishDate |
2021 |
url |
https://archimer.ifremer.fr/doc/00725/83679/88726.pdf https://archimer.ifremer.fr/doc/00725/83679/89479.xlsx https://archimer.ifremer.fr/doc/00725/83679/89480.docx https://doi.org/10.1016/j.gca.2021.09.025 https://archimer.ifremer.fr/doc/00725/83679/ |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Geochimica Et Cosmochimica Acta (0016-7037) (Elsevier BV), 2021-12 , Vol. 315 , P. 317-332 |
op_relation |
https://archimer.ifremer.fr/doc/00725/83679/88726.pdf https://archimer.ifremer.fr/doc/00725/83679/89479.xlsx https://archimer.ifremer.fr/doc/00725/83679/89480.docx doi:10.1016/j.gca.2021.09.025 https://archimer.ifremer.fr/doc/00725/83679/ |
op_rights |
info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1016/j.gca.2021.09.025 |
container_title |
Geochimica et Cosmochimica Acta |
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1766156425272229888 |