500 million years of foraminiferal calcification - INSU - Institut national des sciences de l'Univers Accéder directement au contenu
Article Dans Une Revue Earth-Science Reviews Année : 2023

500 million years of foraminiferal calcification

Résumé

Ongoing ocean acidification affects marine calcification, although the scope and magnitude of this impact is essentially unknown. Here, we investigate the evolutionary origin of shell building in foraminifera to understand the long-term interplay between ocean carbon chemistry and calcification. Our analysis of shell chemical composition reveals multiple, independent origins for foraminiferal calcification throughout the Phanerozoic. Differences between orders reflect the different physiological controls employed by foraminifera to take up Ca2+ and inorganic carbon from seawater for CaCO3 precipitation. With the long timespan involved, variability in seawater chemistry provided contrasting environments for calcification to arise, resulting in the diverse calcification strategies that exist today. This, in turn, explains the opposite responses of shell building to carbon perturbations. Our results call for adopting an evolutionary perspective when predicting the impact of perturbations on marine calcification and thereby, on the global carbon cycle.
Fichier principal
Vignette du fichier
1-s2.0-S0012825223001733-main.pdf (3.51 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

insu-04188259 , version 1 (25-08-2023)

Licence

Paternité

Identifiants

Citer

L. J. de Nooijer, L. Pacho Sampedro, F. J. Jorissen, J. Pawlowski, Y. Rosenthal, et al.. 500 million years of foraminiferal calcification. Earth-Science Reviews, 2023, 243, ⟨10.1016/j.earscirev.2023.104484⟩. ⟨insu-04188259⟩
44 Consultations
23 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More