Coral calcifying fluid pH is modulated by seawater carbonate chemistry not solely seawater pH
| Type | : | ACL |
|---|---|---|
| Nature | : | Production scientifique |
| Au bénéfice du Laboratoire | : | Non |
| Statut de publication | : | Publié |
| Année de publication | : | 2017 |
| Auteurs (9) | : | COMEAU Steeve TAMBUTTÉ E CARPENTER Robert,c EDMUNDS Peter,j EVENSEN Nicolas ALLEMAND Denis FERRIER-PAGÈS Christine TAMBUTTÉ S VENN A |
| Revue scientifique | : | Proceedings of The Royal Society B-biological Sciences |
| Volume | : | |
| Fascicule | : | |
| Pages | : | |
| DOI | : | 10.1098/rspb.2016.1669 |
| URL | : | - |
| Abstract | : | Reef coral calcification depends on regulation of pH in the internal calcifying fluid (CF) in which the coral skeleton forms. However, little is known about calcifying fluid pH (pHCF) regulation, despite its importance in determining the response of corals to ocean acidification. Here, we investigate pHCF in the coral Stylophora pistillata in seawater maintained at constant pH with manipulated carbonate chemistry to alter dissolved inorganic carbon (DIC) concentration, and therefore total alkalinity (AT). We also investigate the intra- cellular pH of calcifying cells, photosynthesis, respiration and calcification rates under the same conditions. Our results show that despite constant pH in the surrounding seawater, pHCF is sensitive to shifts in carbonate chemistry associated with changes in [DIC] and [AT], revealing that seawater pH is not the sole driver of pHCF. Notably, when we synthesize our results with published data, we identify linear relationships of pHCF with the seawater [DIC]/[Hþ] ratio, [A ]/ [Hþ] ratio and [CO2 |
| Mots-clés | : | - |
| Commentaire | : | - |
| Tags | : | - |
| Fichier attaché | : | - |
| Citation | : |
Comeau S, Tambutté E, Carpenter RC, Edmunds PJ, Evensen N, Allemand D, Ferrier-Pagès C, Tambutté S, Venn A (2017) Coral calcifying fluid pH is modulated by seawater carbonate chemistry not solely seawater pH. P Roy Soc B-biol Sci | doi: 10.1098/rspb.2016.1669
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