Articles | Volume 22, issue 7
https://doi.org/10.5194/bg-22-1821-2025
https://doi.org/10.5194/bg-22-1821-2025
Research article
 | 
14 Apr 2025
Research article |  | 14 Apr 2025

Low sensitivity of a heavily calcified coccolithophore under increasing CO2: the case study of Helicosphaera carteri

Stefania Bianco, Manuela Bordiga, Gerald Langer, Patrizia Ziveri, Federica Cerino, Andrea Di Giulio, and Claudia Lupi

Related authors

Wet and dry seasons modulate coastal coccolithophore dynamics off South-western Nigeria (Gulf of Guinea)
Falilu Adekunbi, Michaël Grelaud, Gerald Langer, Lucian Chukwu, Marta Álvarez, Shakirudeen Odunuga, Kai George Schulz, and Patrizia Ziveri
EGUsphere, https://doi.org/10.5194/egusphere-2025-3201,https://doi.org/10.5194/egusphere-2025-3201, 2025
This preprint is open for discussion and under review for Biogeosciences (BG).
Short summary
The Italian contribution to the Synoptic Arctic Survey programme: the 2021 CASSANDRA cruise (LB21) through the Greenland Sea Gyre along the 75° N transect
Manuel Bensi, Giuseppe Civitarese, Diego Borme, Carmela Caroppo, Gabriella Caruso, Federica Cerino, Franco Decembrini, Alessandra de Olazabal, Tommaso Diociaiuti, Michele Giani, Vedrana Kovacevic, Martina Kralj, Angelina Lo Giudice, Giovanna Maimone, Marina Monti, Maria Papale, Luisa Patrolecco, Elisa Putelli, Alessandro Ciro Rappazzo, Federica Relitti, Carmen Rizzo, Francesca Spataro, Valentina Tirelli, Clara Turetta, and Maurizio Azzaro
Earth Syst. Sci. Data, 17, 3701–3719, https://doi.org/10.5194/essd-17-3701-2025,https://doi.org/10.5194/essd-17-3701-2025, 2025
Short summary
Species-specific differential dissolution morphology of selected coccolithophore species: an experimental study
Gerald Langer, Ian Probert, Jeremy R. Young, and Patrizia Ziveri
EGUsphere, https://doi.org/10.5194/egusphere-2025-1921,https://doi.org/10.5194/egusphere-2025-1921, 2025
This preprint is open for discussion and under review for Biogeosciences (BG).
Short summary

Cited articles

Andruleit, H. and Rogalla, U.: Coccolithophores in surface sediments of the Arabian Sea in relation to environmental gradients in surface waters, Mar. Geol., 186, 505–526, https://doi.org/10.1016/S0025-3227(02)00312-2, 2002. 
Aubry, M.-P.: Phylogeny of the Cenozoic calcareous nannoplankton genus Helicosphaera, Paleobiology, 14, 64–80, https://doi.org/10.1017/S0094837300011805, 1988. 
Bach, L. T., Riebesell, U., and Schulz, K. G.: Distinguishing between the effects of ocean acidification and ocean carbonation in the coccolithophore Emiliania huxleyi, Limnol. Oceanogr., 56, 2040–2050, https://doi.org/10.4319/lo.2011.56.6.2040, 2011. 
Bach, L. T., Bauke, C., Meier, K. J. S., Riebesell, U., and Schulz, K. G.: Influence of changing carbonate chemistry on morphology and weight of coccoliths formed by Emiliania huxleyi, Biogeosciences, 9, 3449–3463, https://doi.org/10.5194/bg-9-3449-2012, 2012. 
Bach, L. T., Riebesell, U., Gutowska, M. A., Federwisch, L., and Schulz, K. G.: A unifying concept of coccolithophore sensitivity to changing carbonate chemistry embedded in an ecological framework, Prog. Oceanogr., 135, 125–138, https://doi.org/10.1016/j.pocean.2015.04.012, 2015. 
Download
Short summary
This work focuses on the response in culture experiments to increasing CO2 of the coccolithophore species Helicosphaera carteri, a unicellular marine calcifying microalgae. The absence of significant changes in coccolith malformations, along with stable size, shape, and calcification-to-photosynthesis ratio, is indicative of H. carteri low sensitivity to CO2 rise, together with its ability to maintain a stable contribution to the marine rain ratio under future climate changes.
Share
Altmetrics
Final-revised paper
Preprint