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Bednaršek, Nina; Tarling, Geraint A; Bakker, Dorothee C E; Fielding, Sophie; Cohen, Anne L; Kuzirian, Alan; McCorkle, Daniel C; Lézé, Bertrand; Montagna, Roberto (2012): Seawater carbonate chemistry and pteropod Limacina helicina antarctica shell dissolution during experiments, 2012. PANGAEA, https://doi.org/10.1594/PANGAEA.779926, Supplement to: Bednaršek, N et al. (2012): Description and quantification of pteropod shell dissolution: A sensitive bioindicator of ocean acidification. Global Change Biology, 18(7), 2378-2388, https://doi.org/10.1111/j.1365-2486.2012.02668.x

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Abstract:
Anthropogenic ocean acidification is likely to have negative effects on marine calcifying organisms, such as shelled pteropods, by promoting dissolution of aragonite shells. Study of shell dissolution requires an accurate and sensitive method for assessing shell damage. Shell dissolution was induced through incubations in CO2 enriched seawater for between 4 and 14 days. We describe a procedure that allows the level of dissolution to be assessed and classified into three main types: Type I with partial dissolution of the prismatic layer; Type II with exposure of underlying crossed-lamellar layer, and Type III, where crossed-lamellar layer shows signs of dissolution. Levels of dissolution showed a good correspondence to the incubation conditions, with the most severe damage found in specimens held for 14 d in undersaturated condition (Ohm ~ 0.8). This methodology enables the response of small pelagic calcifiers to acidified conditions to be detected at an early stage, thus making pteropods a valuable bioindicator of future ocean acidification.
Keyword(s):
Animalia; Antarctic; Bottles or small containers/Aquaria (<20 L); Calcification/Dissolution; Laboratory experiment; Limacina helicina antarctica; Mollusca; Open ocean; Pelagos; Single species; Temperate; Zooplankton
Comment:
In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Lavigne and Gattuso, 2011) 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).
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Experimental treatmentExp treatBednaršek, Nina
2Time, incubationT incubationdayBednaršek, Nina
3SpeciesSpeciesBednaršek, Nina
4SalinitySalBednaršek, Nina
5Temperature, waterTemp°CBednaršek, Nina
6PhosphatePHSPHTµmol/kgBednaršek, Nina
7SilicateSILCATµmol/kgBednaršek, Nina
8Alkalinity, totalATµmol/kgBednaršek, NinaTitration potentiometric
9Alkalinity, total, standard deviationAT std dev±Bednaršek, Nina
10Carbon, inorganic, dissolvedDICµmol/kgBednaršek, NinaCoulometric titration
11Carbon, inorganic, dissolved, standard deviationDIC std dev±Bednaršek, Nina
12pHpHBednaršek, NinaCalculated using CO2SYSTotal scale
13pH, standard deviationpH std dev±Bednaršek, Nina
14Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmBednaršek, NinaCalculated using CO2SYS
15Carbon dioxide, partial pressure, standard deviationpCO2 std dev±Bednaršek, Nina
16Bicarbonate ion[HCO3]-µmol/kgBednaršek, NinaCalculated using CO2SYS
17Bicarbonate ion, standard deviation[HCO3]- std dev±Bednaršek, Nina
18Carbonate ion[CO3]2-µmol/kgBednaršek, NinaCalculated using CO2SYS
19Carbonate ion, standard deviation[CO3]2- std dev±Bednaršek, Nina
20Aragonite saturation stateOmega ArgBednaršek, NinaCalculated using CO2SYS
21Aragonite saturation state, standard deviationOmega Arg std dev±Bednaršek, Nina
22Individuals, non-dissolvingnon-diss%Bednaršek, NinaScanning electron microscope (SEM)
23Individuals, non-dissolving, standard-deviationnon-diss std dev±Bednaršek, Nina
24Dissolution rateDiss rate%Bednaršek, NinaScanning electron microscope (SEM)Type I, see reference
25Dissolution rate, standard deviationDiss rate std dev±Bednaršek, NinaType I, see reference
26Dissolution rateDiss rate%Bednaršek, NinaScanning electron microscope (SEM)Type II, see reference
27Dissolution rate, standard deviationDiss rate std dev±Bednaršek, NinaType II, see reference
28Dissolution rateDiss rate%Bednaršek, NinaScanning electron microscope (SEM)Type III, see reference
29Dissolution rate, standard deviationDiss rate std dev±Bednaršek, NinaType III, see reference
30Carbonate system computation flagCSC flagNisumaa, Anne-MarinCalculated using seacarb after Nisumaa et al. (2010)
31pHpHNisumaa, Anne-MarinCalculated using seacarb after Nisumaa et al. (2010)Total scale
32Carbon dioxideCO2µmol/kgNisumaa, Anne-MarinCalculated using seacarb after Nisumaa et al. (2010)
33Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmNisumaa, Anne-MarinCalculated using seacarb after Nisumaa et al. (2010)
34Fugacity of carbon dioxide (water) at sea surface temperature (wet air)fCO2water_SST_wetµatmNisumaa, Anne-MarinCalculated using seacarb after Nisumaa et al. (2010)
35Bicarbonate ion[HCO3]-µmol/kgNisumaa, Anne-MarinCalculated using seacarb after Nisumaa et al. (2010)
36Carbonate ion[CO3]2-µmol/kgNisumaa, Anne-MarinCalculated using seacarb after Nisumaa et al. (2010)
37Aragonite saturation stateOmega ArgNisumaa, Anne-MarinCalculated using seacarb after Nisumaa et al. (2010)
38Calcite saturation stateOmega CalNisumaa, Anne-MarinCalculated using seacarb after Nisumaa et al. (2010)
Size:
188 data points

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