Pacific-wide contrast highlights resistance of reef calcifiers to ocean acidification, supplement to: Comeau, Steeve; Carpenter, Robert C; Nojiri, Yukihiro; Putnam, H M; Sakai, Kazuhiko; Edmunds, Peter J (2014): Pacific-wide contrast highlights resistance of reef calcifiers to ocean acidification. Proceedings of the Royal Society B-Biological Sciences, 281(1790), 20141339-20141339

• Main Authors: Comeau, Steeve, Carpenter, Robert C, Nojiri, Yukihiro, Putnam, H M, Sakai, Kazuhiko, Edmunds, Peter J
• Format: Dataset
• Language: English
• Published: PANGAEA - Data Publisher for Earth & Environmental Science 2014
• Subjects: Animalia; Benthic animals; Benthos; Calcification/Dissolution; Chlorophyta; Cnidaria; Coast and continental shelf; Containers and aquaria 20-1000 L or < 1 m**2; Halimeda macroloba; Laboratory experiment; Macroalgae; North Pacific; Plantae; Pocillopora damicornis; Porites sp.; Porolithon onkodes; Rhodophyta; Single species; South Pacific; Temperate; Tropical; Location; Species; Partial pressure of carbon dioxide water at sea surface temperature wet air; Alkalinity, total; pH; Temperature, water; Salinity; Calcification rate of calcium carbonate; Date/time start; Date/time end; Carbonate system computation flag; Carbon dioxide; Fugacity of carbon dioxide water at sea surface temperature wet air; Bicarbonate ion; Carbonate ion; Carbon, inorganic, dissolved; Aragonite saturation state; Calcite saturation state; Potentiometric titration; Potentiometric; Buoyant weighing technique Davies, 1989; 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.832834; https://doi.pangaea.de/10.1594/PANGAEA.832834

Ocean acidification (OA) and its associated decline in calcium carbonate saturation states is one of the major threats that tropical coral reefs face this century. Previous studies of the effect of OA on coral reef calcifiers have described a wide variety of outcomes for studies using comparable partial pressure of CO2 (pCO2) ranges, suggesting that key questions remain unresolved. One unresolved hypothesis posits that heterogeneity in the response of reef calcifiers to high pCO2 is a result of regional-scale variation in the responses to OA. To test this hypothesis, we incubated two coral taxa (Pocillopora damicornis and massive Porites) and two calcified algae (Porolithon onkodes and Halimeda macroloba) under 400, 700 and 1000 µatm pCO2 levels in experiments in Moorea (French Polynesia), Hawaii (USA) and Okinawa (Japan), where environmental conditions differ. Both corals and H. macroloba were insensitive to OA at all three locations, while the effects of OA on P. onkodes were location-specific. In Moorea and Hawaii, calcification of P. onkodes was depressed by high pCO2, but for specimens in Okinawa, there was no effect of OA. Using a study of large geographical scale, we show that resistance to OA of some reef species is a constitutive character expressed across the Pacific. : 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 2014-05-19.