Coral pH regulation of the calcifying fluid is modulated by seawater dissolved inorganic carbon concentration ...

• Main Authors: Comeau, Steeve, Tambutté, Eric, Carpenter, Robert C, Edmunds, Peter J, Evensen, Nicolas R, Allemand, Denis, Ferrier-Pagès, Christine, Tambutté, Sylvie, Venn, Alexander A
• Format: Dataset
• Language: English
• Published: PANGAEA 2017
• Subjects: Acid-base regulation; Animalia; Benthic animals; Benthos; Calcification/Dissolution; Cnidaria; Containers and aquaria 20-1000 L or < 1 m**2; Laboratory experiment; Laboratory strains; Not applicable; Primary production/Photosynthesis; Respiration; Single species; Stylophora pistillata; Type; Species; Registration number of species; Uniform resource locator/link to reference; Figure; Treatment; Photosynthesis rate of oxygen, per symbiont cell; Net photosynthesis rate, oxygen, standard error; Gross photosynthesis rate, oxygen, standard error; Respiration rate, oxygen; Respiration rate, oxygen, standard error; Calcification rate of calcium carbonate; Calcification rate, standard error; Calcifying fluid, pH; Calcifying fluid, pH, standard error; pH; pH, standard error; Alkalinity, total; Alkalinity, total, standard error; Salinity; Temperature, water; Temperature, water, standard error; Carbonate system computation flag; Carbon dioxide; Fugacity of carbon dioxide water at sea surface temperature wet air; Partial pressure of carbon dioxide water at sea surface temperature wet air; Bicarbonate ion; Carbonate ion; Carbon, inorganic, dissolved; Aragonite saturation state; Calcite saturation state; Calculated using seacarb after Nisumaa et al. 2010; Ocean Acidification International Coordination Centre OA-ICC; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.868353; https://doi.pangaea.de/10.1594/PANGAEA.868353

Reef coral calcification depends on regulation of pH in the internal calcifying fluid 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 the impact of seawater dissolved inorganic carbon (DIC) concentration on calcifying fluid pH in the coral Stylophora pistillata in seawater with manipulated [DIC] and constant pH. Our results reveal that regulation of pHCF and calcification rates are sensitive to changes in seawater [DIC] in the light and dark. While part of this relationship can be explained by changes in rates of photosynthesis and respiration, our data point to the importance of seawater DIC in pH regulation of the coral's calcifying cells. Our findings contribute towards a mechanistic understanding of how and why coral calcification is sensitive to changes in seawater carbonate chemistry, which is needed for predicting effects of environmental ... : In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2015) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI). The date of carbonate chemistry calculation is 2016-11-14. ...