Seawater carbonate chemistry, larval settlement and growth rate during experiments with coral Porites astreoides, 2008

• Main Authors: Albright, R, Mason, B, Langdon, Chris
• Format: Dataset
• Language: English
• Published: PANGAEA 2008
• Subjects: Albright_etal_08; Alkalinity; Gran titration (Gran; 1950); total; Animalia; Aragonite saturation state; Bicarbonate ion; Bottles or small containers/Aquaria (<20 L); Calcite saturation state; Calcium; Calculated; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. (2010); Carbon; inorganic; dissolved; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Cnidaria; Coast and continental shelf; EPOCA; EUR-OCEANS; European network of excellence for Ocean Ecosystems Analysis; European Project on Ocean Acidification; EXP; Experiment; Experimental treatment; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Growth/Morphology; Growth rate; Laboratory experiment; North Atlantic; OA-ICC; Ocean Acidification International Coordination Centre; Orion Ross conductivity probe; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Pelagos; pH; Porites astreoides; Porites astreoides larval settlement; Reproduction; Salinity; Single species; Temperate; Temperature; water; Zooplankton; Ocean acidification
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.726961; https://doi.org/10.1594/PANGAEA.726961

In response to the increases in pCO2 projected in the 21st century, adult coral growth and calcification are expected to decrease significantly. However, no published studies have investigated the effect of elevated pCO2 on earlier life history stages of corals. Porites astreoides larvae were collected from reefs in Key Largo, Florida, USA, settled and reared in controlled saturation state seawater. Three saturation states were obtained, using 1 M HCl additions, corresponding to present (380 ppm) and projected pCO2 scenarios for the years 2065 (560 ppm) and 2100 (720 ppm). The effect of saturation state on settlement and post-settlement growth was evaluated. Saturation state had no significant effect on percent settlement; however, skeletal extension rate was positively correlated with saturation state, with ~50% and 78% reductions in growth at the mid and high pCO2 treatments compared to controls, respectively.