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...
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fttriple:oai:gotriple.eu:10670/1.n0twg0 2023-05-15T17:50:28+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. https://doi.org/10.1016/j.gca.2021.09.025 https://archimer.ifremer.fr/doc/00725/83679/88726.pdf https://archimer.ifremer.fr/doc/00725/83679/89479.xlsx en eng Elsevier BV doi:10.1016/j.gca.2021.09.025 10670/1.n0twg0 https://archimer.ifremer.fr/doc/00725/83679/88726.pdf https://archimer.ifremer.fr/doc/00725/83679/89479.xlsx other Archimer, archive institutionnelle de l'Ifremer Geochimica Et Cosmochimica Acta (0016-7037) (Elsevier BV), 2021-12 , Vol. 315 , P. 317-332 envir geo Text https://vocabularies.coar-repositories.org/resource_types/c_18cf/ fttriple https://doi.org/10.1016/j.gca.2021.09.025 2023-01-22T16:54:42Z 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. Text Ocean acidification Unknown Geochimica et Cosmochimica Acta 315 317 332 |
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English |
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envir geo |
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envir geo 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 |
envir geo |
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 |
Text |
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 |
url |
https://doi.org/10.1016/j.gca.2021.09.025 https://archimer.ifremer.fr/doc/00725/83679/88726.pdf https://archimer.ifremer.fr/doc/00725/83679/89479.xlsx |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Archimer, archive institutionnelle de l'Ifremer Geochimica Et Cosmochimica Acta (0016-7037) (Elsevier BV), 2021-12 , Vol. 315 , P. 317-332 |
op_relation |
doi:10.1016/j.gca.2021.09.025 10670/1.n0twg0 https://archimer.ifremer.fr/doc/00725/83679/88726.pdf https://archimer.ifremer.fr/doc/00725/83679/89479.xlsx |
op_rights |
other |
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 |
op_container_end_page |
332 |
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1766157226397925376 |