Seawater carbonate chemistry and biomechanical properties of the skeletal plates of the sea urchin Paracentrotus lividus (Lamarck, 1816) ...

• Main Authors: Asnaghi, Valentina, Collard, Marie, Mangialajo, Luisa, Gattuso, Jean-Pierre, Dubois, Philippe
• Format: Dataset
• Language: English
• Published: PANGAEA 2023
• Subjects: Animalia; Benthic animals; Benthos; Containers and aquaria 20-1000 L or < 1 m**2; Echinodermata; Laboratory experiment; Laboratory strains; Not applicable; Other; Other studied parameter or process; Paracentrotus lividus; Single species; Type of study; Species, unique identification; Species, unique identification URI; Species, unique identification Semantic URI; Plate; Treatment pH; Diet; Individuals; Youngs modulus; Force; Area; Salinity; pH; pH, standard deviation; Alkalinity, total; Alkalinity, total, standard deviation; Temperature, water; Temperature, water, standard deviation; Carbonate system computation flag; Carbon dioxide; Partial pressure of carbon dioxide water at sea surface temperature wet air; Fugacity of carbon dioxide water at sea surface temperature wet air; Bicarbonate ion; Carbonate ion; Carbon, inorganic, dissolved; Aragonite saturation state; Calcite saturation state; 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.960351; https://doi.pangaea.de/10.1594/PANGAEA.960351

Sea urchins, ecologically important herbivores of shallow subtidal temperate reefs, are considered particularly threatened in a future ocean acidification scenario, since their carbonate structures (skeleton and grazing apparatus) are made up of the very soluble high-magnesium calcite, particularly sensitive to a decrease in pH. The biomechanical properties of their skeletal structures are of great importance for their individual fitness, because the skeleton provides the means for locomotion, grazing and protection from predators. Sea urchin skeleton is composed of discrete calcite plates attached to each other at sutures by organic ligaments. The present study addressed the fate of the sea urchin Paracentrotus lividus (Lamarck, 1816) skeleton in acidified oceans, taking into account the combined effect of reduced pH and macroalgal diet, with potential cascading consequences at the ecosystem level. A breaking test on individual plates of juvenile specimens fed different macroalgal diets has been performed, ... : 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 2023-07-06. ...