The effects of thermal and high-CO2 stresses on the metabolism and surrounding microenvironment of the coral Galaxea fascicularis, supplement to: Agostini, Sylvain; Fujimura, Hiroyuki; Higuchi, Tomihiko; Yuyama, Ikuko; Casareto, Beatriz E; Suzuki, Yoshimi; Nakano, Yoshiyuki (2013): The effects of thermal and high-CO2 stresses on the metabolism and surrounding microenvironment of the coral Galaxea fascicularis. Comptes Rendus Biologies, 336(8), 384-391

• Main Authors: Agostini, Sylvain, Fujimura, Hiroyuki, Higuchi, Tomihiko, Yuyama, Ikuko, Casareto, Beatriz E, Suzuki, Yoshimi, Nakano, Yoshiyuki
• Format: Dataset
• Language: English
• Published: PANGAEA - Data Publisher for Earth & Environmental Science 2013
• Subjects: Animalia; Benthic animals; Benthos; Bottles or small containers/Aquaria <20 L; Cnidaria; Coast and continental shelf; Galaxea fascicularis; Laboratory experiment; North Pacific; Primary production/Photosynthesis; Respiration; Single species; Temperate; Temperature; Figure; Species; Treatment; Gross photosynthesis rate, oxygen; Respiration rate, carbon dioxide; Adenosine triphosphate, per unit protein; Identification; Time in minutes; pH; Comment; Salinity; pH, standard deviation; Alkalinity, total; Temperature, water; Temperature, water, standard deviation; Carbonate ion; Bicarbonate ion; Carbon dioxide; Carbon, inorganic, dissolved; Partial pressure of carbon dioxide water at sea surface temperature wet air; Aragonite saturation state; Carbonate system computation flag; Fugacity of carbon dioxide water at sea surface temperature wet air; Calcite saturation state; Potentiometric; Potentiometric titration; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. 2010; Ocean Acidification International Coordination Centre OA-ICC; Pacific; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.835319; https://doi.pangaea.de/10.1594/PANGAEA.835319

The effects of elevated temperature and high pCO2 on the metabolism of Galaxea fascicularis were studied with oxygen and pH microsensors. Photosynthesis and respiration rates were evaluated from the oxygen fluxes from and to the coral polyps. High-temperature alone lowered both photosynthetic and respiration rates. High pCO2 alone did not significantly affect either photosynthesis or respiration rates. Under a combination of high-temperature and high-CO2, the photosynthetic rate increased to values close to those of the controls. The same pH in the diffusion boundary layer was observed under light in both (400 and 750 ppm) CO2 treatments, but decreased significantly in the dark as a result of increased CO2. The ATP contents decreased with increasing temperature. The effects of temperature on the metabolism of corals were stronger than the effects of increased CO2. The effects of acidification were minimal without combined temperature stress. However, acidification combined with higher temperature may affect coral metabolism due to the amplification of diel variations in the microenvironment surrounding the coral and the decrease in ATP contents. : In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Lavigne et al, 2014) 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 2014-08-27.