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Langer, Gerald; Nehrke, Gernot; Baggini, Cecilia; Rodolfo-Metalpa, Riccardo; Hall-Spencer, Jason M; Bijma, Jelle (2014): Limpets counteract ocean acidification induced shell corrosion by thickening of aragonitic shell layers. PANGAEA, https://doi.org/10.1594/PANGAEA.847223, Supplement to: Langer, G et al. (2014): Limpets counteract ocean acidification induced shell corrosion by thickening of aragonitic shell layers. Biogeosciences, 11(24), 7363-7368, https://doi.org/10.5194/bg-11-7363-2014

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Abstract:
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.
Keyword(s):
Animalia; Benthic animals; Benthos; Calcification/Dissolution; CO2 vent; Coast and continental shelf; Field observation; Growth/Morphology; Mediterranean Sea; Mollusca; Patella caerulea; Single species; Temperate
Further details:
Gattuso, Jean-Pierre; Epitalon, Jean-Marie; Lavigne, Héloise (2015): seacarb: seawater carbonate chemistry with R. R package version 3.0.6. https://cran.r-project.org/package=seacarb
Coverage:
Latitude: 40.730170 * Longitude: 13.966330
Event(s):
Ischia_OA * Latitude: 40.730170 * Longitude: 13.966330 * Method/Device: Experiment (EXP)
Comment:
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.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1SpeciesSpeciesLanger, Gerald
2SiteSiteLanger, Gerald
3Thickness, size normalizedSNTLanger, Geraldflank
4Thickness, size normalized, standard deviationSNT std dev±Langer, Geraldflank
5Thickness, size normalizedSNTLanger, Geraldapex
6Thickness, size normalized, standard deviationSNT std dev±Langer, Geraldapex
7Aragonite, fractionatedArg frac%Langer, Geraldarea
8Aragonite, standard deviationArg std dev±Langer, Geraldarea, fractionated
9Area, size normalizedSNALanger, Geraldaragonite
10Area, size normalized, standard deviationSNA std dev±Langer, Geraldaragonite
11Area, size normalizedSNALanger, Geraldcalcite
12Area, size normalized, standard deviationSNA std dev±Langer, Geraldcalcite
13SalinitySalLanger, Gerald
14Temperature, waterTemp°CLanger, Gerald
15Temperature, water, standard deviationTemp std dev±Langer, Gerald
16pHpHLanger, Geraldtotal scale
17pH, standard deviationpH std dev±Langer, Geraldtotal scale
18Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmLanger, Gerald
19Partial pressure of carbon dioxide, standard deviationpCO2 std dev±Langer, Gerald
20Bicarbonate ion[HCO3]-µmol/kgLanger, Gerald
21Bicarbonate ion, standard deviation[HCO3]- std dev±Langer, Gerald
22Carbonate ion[CO3]2-µmol/kgLanger, Gerald
23Carbonate ion, standard deviation[CO3]2- std dev±Langer, Gerald
24Carbon dioxideCO2µmol/kgLanger, Gerald
25Carbon dioxide, standard deviationCO2 std dev±Langer, Gerald
26Carbon, inorganic, dissolvedDICµmol/kgLanger, Gerald
27Carbon, inorganic, dissolved, standard deviationDIC std dev±Langer, Gerald
28Calcite saturation stateOmega CalLanger, Gerald
29Aragonite saturation state, standard deviationOmega Arg std dev±Langer, Gerald
30Aragonite saturation stateOmega ArgLanger, Gerald
31Calcite saturation state, standard deviationOmega Cal std dev±Langer, Gerald
32Carbonate system computation flagCSC flagYang, YanCalculated using seacarb after Nisumaa et al. (2010)
33Carbon dioxideCO2µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
34Fugacity of carbon dioxide (water) at sea surface temperature (wet air)fCO2water_SST_wetµatmYang, YanCalculated using seacarb after Nisumaa et al. (2010)
35Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmYang, YanCalculated using seacarb after Nisumaa et al. (2010)
36Bicarbonate ion[HCO3]-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
37Carbonate ion[CO3]2-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
38Alkalinity, totalATµmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
39Aragonite saturation stateOmega ArgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
40Calcite saturation stateOmega CalYang, YanCalculated using seacarb after Nisumaa et al. (2010)
Size:
110 data points

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