Seawater carbon chemistry and calcification rate of Palau corals ...

• Main Authors: Barkley, Hannah C, Cohen, Anne L, McCorkle, Daniel C, Golbuu, Yimnang
• Format: Dataset
• Language: English
• Published: PANGAEA 2017
• Subjects: Animalia; Benthic animals; Benthos; Bottles or small containers/Aquaria <20 L; Calcification/Dissolution; Cnidaria; Coast and continental shelf; Field experiment; Laboratory experiment; Porites sp.; Single species; South Pacific; Tropical; Event label; Type; Species; Registration number of species; Uniform resource locator/link to reference; Experiment; Identification; Aragonite saturation state; Treatment; Calcification rate of calcium carbonate; Incubation duration; Calcification rate of calcium carbonate per week; Calcification rate, standard error; Duration; Status; Calcification rate of calcium carbonate per month; Salinity; Salinity, standard deviation; Temperature, water; Temperature, water, standard deviation; pH; pH, standard deviation; Alkalinity, total; Alkalinity, total, standard deviation; Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard deviation; Partial pressure of carbon dioxide water at sea surface temperature wet air; Partial pressure of carbon dioxide, standard deviation; Carbonate ion; Carbonate ion, standard deviation; Aragonite saturation state, standard deviation; Carbonate system computation flag; Carbon dioxide; Fugacity of carbon dioxide water at sea surface temperature wet air; Bicarbonate ion; Calcite saturation state; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.877806; https://doi.pangaea.de/10.1594/PANGAEA.877806

In Palau, calcification rates of two reef-building coral genera (Porites and Favia) are maintained across a strong natural gradient in aragonite saturation state (Omega ar) ranging from 3.7 to 2.3. This observation contrasts the strong sensitivity to decreasing ?ar that these genera demonstrate in both laboratory CO2 manipulation experiments and in field studies. Moreover, in contrast to other naturally more acidic coral reefs, benthic communities in Palau's low-Omega ar (Omega ar = 2.3) Rock Island reefs display ecological indices consistent with healthy communities. A laboratory CO2 manipulation experiment and a field-based reciprocal transplant were used to investigate whether the apparent lack of sensitivity to ocean acidification of Palau's Porites corals can be attributed to local adaptation to chronic acidification or to environmental factors that allow corals to thrive despite extreme pH conditions. In a two-month laboratory incubation, calcification rates of Palau Porites from both environments were ... : In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2016) 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 2017-07-07. ...