Seawater carbonate chemistry and calcification response of a tropical scleractinian coral to seasonal upwelling conditions ...

• Main Authors: Gómez, C E, Acosta-Chaparro, Andrés, Bernal, Cesar A, Gómez-López, Diana I, Navas-Camacho, Raúl, Alonso, David
• Format: Dataset
• Language: English
• Published: PANGAEA 2023
• Subjects: Benthos; Calcification/Dissolution; Coast and continental shelf; Entire community; Field observation; North Atlantic; Rocky-shore community; Tropical; Upwelling; Type of study; DATE/TIME; Coral, fragments; Temperature, water; Salinity; Chamber volume; Volume; DEPTH, water; Time in minutes; Alkalinity, total; Carbon, inorganic, dissolved; Net calcification rate of calcium carbonate; Net dissolution rate of calcium carbonate; Carbonate system computation flag; pH; 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; Aragonite saturation state; Calcite saturation state; Experiment; 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.960154; https://doi.pangaea.de/10.1594/PANGAEA.960154

Natural processes such as upwelling of deeper-water masses change the physical-chemical conditions of the water column creating localized ocean acidification events that can have an impact on the natural communities. This study was performed in a coral reef system of an archetypical bay within the Tayrona National Natural Park (PNNT) (Colombia), and aimed to quantify net calcification rates of a foundational coral species within a temporal context (6 months) taking into account the dynamics of seasonal upwelling that influence the study area. Net calcification rates of coral fragments were obtained in situ by the alkalinity anomaly technique in short-term incubations (~2.5 h). We found a significant effect of the upwelling on net calcification rates (Gnet) (p < 0.05) with an 42% increase in CaCO3 accretion compared to non-upwelling season. We found an increase in total alkalinity (AT) and dissolved inorganic carbon (DIC) with decreased aragonite saturation (Ωara) for the upwelling months, indicating an ... : In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2022) 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 2023-06-30. ...