Limpets counteract ocean acidification induced shell corrosion by thickening of aragonitic shell layers ...

• Main Authors: Langer, Gerald, Nehrke, Gernot, Baggini, Cecilia, Rodolfo-Metalpa, Riccardo, Hall-Spencer, Jason M, Bijma, Jelle
• Format: Dataset
• Language: English
• Published: PANGAEA 2014
• Subjects: Animalia; Benthic animals; Benthos; Calcification/Dissolution; CO2 vent; Coast and continental shelf; Field observation; Growth/Morphology; Mediterranean Sea; Mollusca; Patella caerulea; Single species; Temperate; Species; Site; Thickness, size normalized; Thickness, size normalized, standard deviation; Aragonite, fractionated; Aragonite, standard deviation; Area, size normalized; Area, size normalized, standard deviation; Salinity; Temperature, water; Temperature, water, standard deviation; pH; pH, standard deviation; Partial pressure of carbon dioxide water at sea surface temperature wet air; Partial pressure of carbon dioxide, standard deviation; Bicarbonate ion; Bicarbonate ion, standard deviation; Carbonate ion; Carbonate ion, standard deviation; Carbon dioxide; Carbon dioxide, standard deviation; Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard deviation; Calcite saturation state; Aragonite saturation state, standard deviation; Aragonite saturation state; Calcite saturation state, standard deviation; Carbonate system computation flag; Fugacity of carbon dioxide water at sea surface temperature wet air; Alkalinity, total; Experiment; 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.847223; https://doi.pangaea.de/10.1594/PANGAEA.847223

Specimens of the patellogastropod limpet Patella caerulea were collected within (pHlow-shells) and outside (pHn-shells) a CO2 vent site at Ischia, Italy. Four pHlow-shells and four pHn-shells were sectioned transversally and scanned for polymorph distribution by means of confocal Raman microscopy. The pHlow-shells displayed a twofold increase in aragonite area fraction and size-normalised aragonite area. Size-normalised calcite area was halved in pHlow-shells. Taken together with the increased apical and the decreased flank size-normalised thickness of the pHlow-shells, these data led us to conclude that low-pH-exposed P. caerulea specimens counteract shell dissolution by enhanced shell production. This is different from normal elongation growth and proceeds through addition of aragonitic parts only, while the production of calcitic parts is confined to elongation growth. Therefore, aragonite cannot be regarded as a disadvantageous polymorph per se under ocean acidification conditions. ... : 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 2015-06-01. ...