Annual response of two Mediterranean azooxanthellate temperate corals to low-pH and high-temperature conditions ...

• Main Authors: Movilla, Juancho, Calvo, Eva, Coma, Rafel, Serrano, Eduard, Lopez-Sanz, Angel, Pelejero, Carles
• Format: Dataset
• Language: English
• Published: PANGAEA 2016
• Subjects: Animalia; Astroides calycularis; Benthic animals; Benthos; Biomass/Abundance/Elemental composition; Bottles or small containers/Aquaria <20 L; Calcification/Dissolution; Cnidaria; Coast and continental shelf; Laboratory experiment; Leptopsammia pruvoti; Mediterranean Sea; Single species; Temperate; Temperature; Event label; Type; Species; Registration number of species; Uniform resource locator/link to reference; Figure; Identification; Treatment; Calcification rate of calcium carbonate; Time in days; Density; Porosity; Organic matter; Proteins, total; Lipids, total; pH; pH, standard error; Alkalinity, total; Alkalinity, total, standard error; Salinity; Salinity, standard error; Temperature, water; 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; Experiment; Potentiometric; Potentiometric titration; Calculated using seacarb after Nisumaa et al. 2010; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.861963; https://doi.pangaea.de/10.1594/PANGAEA.861963

Ocean acidification (OA) and warming related to the anthropogenic increase in atmospheric CO2 have been shown to have detrimental effects on several marine organisms, especially those with calcium carbonate structures such as corals. In this study, we evaluate the response of two Mediterranean shallow-water azooxanthellate corals to the projected pH and seawater temperature (ST) scenarios for the end of this century. The colonial coral Astroides calycularis and the solitary Leptopsammia pruvoti were grown in aquaria over a year under two fixed pH conditions, control (8.05 pHT units) and low (7.72 pHT units), and simulating two annual ST cycles, natural and high (+3 °C). The organic matter (OM), lipid and protein content of the tissue and the skeletal microdensity of A. calycularis were not affected by the stress conditions (low pH, high ST), but the species exhibited a mean 25 % decrease in calcification rate at high-ST conditions at the end of the warm period and a mean 10 % increase in skeletal porosity ... : 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 2016-06-21. ...