Seawater carbonate chemistry, calcification and Zn uptake during experiments with coral Stylophora pistillata, 2011

• Main Authors: Houlbrèque, Fanny, Rodolfo-Metalpa, Riccardo, Jeffree, Ross, Oberhänsli, F, Teyssié, Jean-Louis, Boisson, Florence, AL-Trabeen, Khalid, Ferrier-Pagès, Christine
• Format: Dataset
• Language: English
• Published: PANGAEA - Data Publisher for Earth & Environmental Science 2011
• Subjects: Animalia; Benthic animals; Benthos; Calcification/Dissolution; Cnidaria; Laboratory experiment; Other metabolic rates; Single species; Stylophora pistillata; DATE/TIME; Experiment day; Experimental treatment; Salinity; Temperature, water; pH; Alkalinity, total; Partial pressure of carbon dioxide water at sea surface temperature wet air; Bicarbonate ion; Carbonate ion; Carbon dioxide; Aragonite saturation state; Zinc-65, inc uptake kinetics; Gross calcification rate of calcium carbonate; Carbonate system computation flag; Fugacity of carbon dioxide water at sea surface temperature wet air; Carbon, inorganic, dissolved; Calcite saturation state; pH meter Metrohm, 826 pH mobile; Alkalinity, Gran titration Gran, 1950; Calculated using SYSTAT; Determined using a high-resolution spectrometry system consisting of four coaxia; Measured after Tambutté et al. 1995; Calculated using seacarb after Nisumaa et al. 2010; European network of excellence for Ocean Ecosystems Analysis EUR-OCEANS; European Project on Ocean Acidification EPOCA; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.756646; https://doi.pangaea.de/10.1594/PANGAEA.756646

Many studies have investigated the effect of an increase in pCO2 on coral calcification and photosynthesis but the physiological consequences are still relatively speculative. We investigated the effects of ocean acidification on zinc incorporation and gross calcification in the scleractinian coral Stylophora pistillata. Zn is an essential element for health and growth of corals. Colonies were maintained at normal pHT (8.1) and at two low-pH conditions (7.8 and 7.5) during 5 weeks. Corals were exposed to 65Zn dissolved in seawater to assess uptake rates of this element. After 5 weeks, 65Zn activity measured in the whole coral and in the two compartments: tissue and skeleton, differed significantly between pH conditions with concentration factors higher at pHT 8.1, compared to lower pH. Zn is therefore taken less efficiently by corals at reduced pH. Their gross calcification, as measured by 45Ca incorporation, photosynthesis and photosynthetic efficiency did not change with pH even at the lowest level. : In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Lavigne and Gattuso, 2011) 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).