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Dueñas-Bohórquez, Adriana; Raitzsch, Markus; de Nooijer, Lennart Jan; Reichart, Gert-Jan (2011): Seawater carbonate chemistry and impacts of calcium and carbonate ion concentration on Mg and Sr incorporation in cultured benthic foraminifera (Ammonia tepida and Heterostegina depressa), 2011. doi:10.1594/PANGAEA.770474,
Supplement to: Dueñas-Bohórquez, A et al. (2011): Independent impacts of calcium and carbonate ion concentration on Mg and Sr incorporation in cultured benthic foraminifera. Marine Micropaleontology, 81(3-4), 122-130, doi:10.1016/j.marmicro.2011.08.002

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Laboratory culture experiments were conducted to determine effects of seawater carbonate ion concentration ([CO32-]), and thereby calcite saturation state, on Mg and Sr incorporation into calcite of two species of shallow-water benthic foraminifera: Ammonia tepida and Heterostegina depressa. Impact on Mg and Sr incorporation by increased seawater [CO32-] and thereby higher calcite saturation state, is absent in either species. Comparison to results from a similar culturing experiment, in which calcite saturation state was varied as a function of [Ca2+], reveals that saturation state affects incorporation of Mg and Sr through calcium- rather than carbonate availability. The similarity in response by both species is surprising since the average Mg/Ca ratio is ~ 70 times higher in H. depressa than in A. tepida. Furthermore, these results suggest that the ions involved in biomineralization (i.e. Ca2+ and DIC) are processed by separate cellular transport mechanisms. The similar response of Mg and Sr incorporation in this study suggests that only differences in the Ca2+ transport mechanism affect divalent cation partitioning.
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).
#NameShort NameUnitPrincipal InvestigatorMethodComment
1SpeciesSpeciesDueñas-Bohórquez, Adriana
2IdentificationIDDueñas-Bohórquez, Adriana
3SalinitySalDueñas-Bohórquez, Adriana
4Salinity, standard deviationSal std dev±Dueñas-Bohórquez, Adriana
5Temperature, waterTemp°CDueñas-Bohórquez, Adriana
6Temperature, standard deviationT std dev±Dueñas-Bohórquez, Adriana
7Alkalinity, totalATµmol/kgDueñas-Bohórquez, AdrianaMeasured
8Alkalinity, total, standard deviationAT std dev±Dueñas-Bohórquez, Adriana
9Carbon, inorganic, dissolvedDICµmol/kgDueñas-Bohórquez, AdrianaMeasured
10Carbon, inorganic, dissolved, standard deviationDIC std dev±Dueñas-Bohórquez, Adriana
11pHpHDueñas-Bohórquez, AdrianaCalculated using CO2SYS
12pH, standard deviationpH std dev±Dueñas-Bohórquez, Adriana
13Carbonate ion[CO3]2-µmol/kgDueñas-Bohórquez, AdrianaCalculated using CO2SYS
14Carbonate ion, standard deviation[CO3]2- std dev±Dueñas-Bohórquez, Adriana
15Calcite saturation stateOmega CalDueñas-Bohórquez, AdrianaCalculated using CO2SYS
16Calcite saturation state, standard deviationOmega Cal std dev±Dueñas-Bohórquez, Adriana
17Number of specimensNo spec#Dueñas-Bohórquez, AdrianaBeginning of experiment
18Number of specimensNo spec#Dueñas-Bohórquez, AdrianaLiving at the end of experiment
19Number of specimensNo spec#Dueñas-Bohórquez, AdrianaLiving juveniles at the end of experiment
20Number of specimensNo spec#Dueñas-Bohórquez, AdrianaSpecimens analysed
21Ammonia tepida, chambers addedA. tepida chambers#Dueñas-Bohórquez, Adriana
22Ammonia tepida, chambers added per individualA. tepida chambers/ind#/#Dueñas-Bohórquez, Adriana
23Rows of chambers addedRows chamb#Dueñas-Bohórquez, Adrianaof Heterostegian depressa
24Rows of chambers added per individualRows chamb/ind#/#Dueñas-Bohórquez, Adrianaof Heterostegian depressa
25ReplicatesRepl#Dueñas-Bohórquez, Adriana
26Ammonia tepida, magnesium/calcium ratioA. tepida Mg/Cammol/molDueñas-Bohórquez, Adriana
27Ammonia tepida, magnesium/calcium ratio, standard deviationA. tepida Mg/Ca std dev±Dueñas-Bohórquez, Adriana
28Heterostegina depressa, magnesium/calcium ratioH. depressa Mg/Cammol/molDueñas-Bohórquez, Adriana
29Heterostegina depressa, magnesium/calcium ratio, standard deviationH. depressa Mg/Ca std dev±Dueñas-Bohórquez, Adriana
30Ammonia tepida, strontium/calcium ratioA. tepida Sr/Cammol/molDueñas-Bohórquez, Adriana
31Ammonia tepida, strontium/calcium ratio, standard deviationA. tepida Sr/Ca std dev±Dueñas-Bohórquez, Adriana
32Heterostegina depressa, strontium/calcium ratioH. depressa Sr/Cammol/molDueñas-Bohórquez, Adriana
33Heterostegina depressa, strontium/calcium ratio, standard deviationH. depressa Sr/Ca std dev±Dueñas-Bohórquez, Adriana
34Carbonate system computation flagCSC flagNisumaa, Anne-MarinCalculated using seacarb after Nisumaa et al. (2010)
35pHpHNisumaa, Anne-MarinCalculated using seacarb after Nisumaa et al. (2010)Total scale
36Carbon dioxideCO2µmol/kgNisumaa, Anne-MarinCalculated using seacarb after Nisumaa et al. (2010)
37Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmNisumaa, Anne-MarinCalculated using seacarb after Nisumaa et al. (2010)
38Fugacity of carbon dioxide (water) at sea surface temperature (wet air)fCO2water_SST_wetµatmNisumaa, Anne-MarinCalculated using seacarb after Nisumaa et al. (2010)
39Bicarbonate ion[HCO3]-µmol/kgNisumaa, Anne-MarinCalculated using seacarb after Nisumaa et al. (2010)
40Carbonate ion[CO3]2-µmol/kgNisumaa, Anne-MarinCalculated using seacarb after Nisumaa et al. (2010)
41Aragonite saturation stateOmega ArgNisumaa, Anne-MarinCalculated using seacarb after Nisumaa et al. (2010)
42Calcite saturation stateOmega CalNisumaa, Anne-MarinCalculated using seacarb after Nisumaa et al. (2010)
282 data points

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