Echinometra sea urchins acclimatised to elevated pCO2 at volcanic vents outperform those under present-day pCO2 conditions ...

• Main Authors: Uthicke, Sven, Ebert, Thomas, Liddy, Michelle, Johansson, Charlotte, Fabricius, Katharina Elisabeth, Lamare, Miles
• Format: Dataset
• Language: English
• Published: PANGAEA 2016
• Subjects: Animalia; Benthic animals; Benthos; CO2 vent; Coast and continental shelf; Echinodermata; Echinometra sp.; Field observation; Growth/Morphology; Single species; South Pacific; Tropical; Event label; Type; Species; Location; Identification; Diameter; Mass; Height; Size; Salinity; Salinity, standard deviation; Temperature, water; pH; Alkalinity, total; Partial pressure of carbon dioxide water at sea surface temperature wet air; Calcite saturation state; 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; Experiment; Potentiometric; Potentiometric titration; Calculated using CO2SYS; 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.864044; https://doi.pangaea.de/10.1594/PANGAEA.864044

Rising atmospheric CO2 concentrations will significantly reduce ocean pH during the 21st century (ocean acidification, OA). This may hamper calcification in marine organisms such as corals and echinoderms, as shown in many laboratory-based experiments. Sea urchins are considered highly vulnerable to OA. We studied an Echinometra species on natural volcanic CO2 vents in Papua New Guinea, where they are CO2-acclimatized and also subjected to secondary ecological changes from elevated CO2. Near the vent site, the urchins experienced large daily variations in pH (> 1 unit) and pCO2 (> 2000 ppm) and average pH values (pHT 7.73) much below those expected under the most pessimistic future emission scenarios. Growth was measured over a 17-month period using tetracycline tagging of the calcareous feeding lanterns. Average-sized urchins grew more than twice as fast at the vent compared with those at an adjacent control site, and assumed larger sizes at the vent compared to the control site and two other sites at ... : In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2015) 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 2016-08-24. ...