Seawater carbonate chemistry and photosynthetic potential, cell density, lipid content of Symbiodinium ...

• Main Authors: Hill, Lilian J, Paradas, Wladimir C, Willemes, Maria Julia, Pereira, Miria G, Salomon, Paulo S, Mariath, Rodrigo, Moura, Rodrigo L, Atella, Georgia C, Farina, Marcos, Amado-Filho, Gilberto M, Salgado, Leonardo T
• Format: Dataset
• Language: English
• Published: PANGAEA 2019
• Subjects: Biomass/Abundance/Elemental composition; Bottles or small containers/Aquaria <20 L; Chromista; Coast and continental shelf; Growth/Morphology; Laboratory experiment; Myzozoa; Pelagos; Phytoplankton; Primary production/Photosynthesis; Single species; South Atlantic; Tropical; Type; Species; Treatment; Experiment day; Maximum photochemical quantum yield of photosystem II; Photochemical quantum yield; Number of cells; Growth rate; Lipids; Percentage; Number of pixels; Partial pressure of carbon dioxide ambient atmosphere; Partial pressure of carbon dioxide, standard deviation; Partial pressure of carbon dioxide water at sea surface temperature wet air; Carbon dioxide; Carbon dioxide, standard deviation; pH; pH, standard deviation; Bicarbonate ion; Bicarbonate ion, standard deviation; Carbonate ion; Carbonate ion, standard deviation; Aragonite saturation state; Aragonite saturation state, standard deviation; Calcite saturation state; Calcite saturation state, standard deviation; Alkalinity, total; Alkalinity, total, standard deviation; Temperature, water; Temperature, water, standard deviation; Salinity; Salinity, standard deviation; Carbonate system computation flag; Fugacity of carbon dioxide water at sea surface temperature wet air; Carbon, inorganic, dissolved; 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.914234; https://doi.pangaea.de/10.1594/PANGAEA.914234

Dinoflagellates from the Symbiodiniaceae family and corals have an ecologically important endosymbiotic relationship. Scleractinian corals cannot survive for long periods without their symbionts. These algae, also known as zooxanthellae, on the other hand, thrives outside the coral cells. The free-living populations of zooxanthellae are essential for the resilience of the coral to environmental stressors such as temperature anomalies and ocean acidification. Yet, little is known about how ocean acidification may affect the free-living zooxanthellae. In this study we aimed to test morphological, physiological and biochemical responses of zooxanthellae from the Symbiodinium genus isolated from the coral Mussismilia braziliensis, endemic to the Brazilian coast, to acidification led by increased atmospheric CO2. We tested whether photosynthetic yield, cell ultrastructure, cell density and lipid profile would change after up to 16 days of exposure to pH 7.5 in an atmospheric pCO2 of 1633 μatm. Photosynthetic ... : In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2019) 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 by seacarb is 2020-03-18. ...