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Langer, Gerald; Probert, Ian; Nehrke, Gernot; Ziveri, Patrizia (2011): The morphological response of Emiliania huxleyi to seawater carbonate chemistry changes: an inter-strain comparison. doi:10.1594/PANGAEA.826456,
Supplement to: Langer, G et al. (2011): The morphological response of Emiliania huxleyi to seawater carbonate chemistry changes: an inter-strain comparison. Journal of Nannoplankton Research, 32(1), 29-34, hdl:10013/epic.37875.d001

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Abstract:
Four strains of the coccolithophore Emiliania huxleyi (RCC1212, RCC1216, RCC1238, RCC1256) were grown in dilute batch culture at four CO2 levels ranging from ~200 µatm to ~1200 µatm. Coccolith morphology was analyzed based on scanning electron micrographs. Three of the four strains did not exhibit a change in morphology over the CO2 range tested. One strain (RCC1256) displayed an increase in the percentage of malformed coccoliths with increasing CO2 concentration. We conclude that the sensitivity of the coccolith-shaping machinery to carbonate chemistry changes is strain-specific. Although it has been shown before that carbonate chemistry related changes in growth- and calcification rate are strain-specific, there seems to be no consistent correlation between coccolith morphology and growth or calcification rate. We did not observe an increase in the percentage of incomplete coccoliths in RCC1256, indicating that the coccolith-shaping machinery per se is affected by acidification and not the signalling pathway that produces the stop-signal for coccolith growth.
Further details:
Lavigne, Héloise; Gattuso, Jean-Pierre (2011): seacarb: seawater carbonate chemistry with R. R package version 2.4. https://cran.r-project.org/package=seacarb
Coverage:
Median Latitude: 5.162500 * Median Longitude: 76.658333 * South-bound Latitude: -42.300000 * West-bound Longitude: -20.333330 * North-bound Latitude: 63.400000 * East-bound Longitude: 169.833330
Date/Time Start: 1998-09-01T00:00:00 * Date/Time End: 2005-11-30T00:00:00
Event(s):
North_Atlantic_OA * Latitude: 63.400000 * Longitude: -20.333330 * Date/Time Start: 1999-07-01T00:00:00 * Date/Time End: 1999-07-31T00:00:00 * Device: Experiment (EXP) * Comment: Isolation date and location of culture strains
North_Pacific_OA * Latitude: 34.016670 * Longitude: 139.833330 * Date/Time Start: 2005-11-01T00:00:00 * Date/Time End: 2005-11-30T00:00:00 * Device: Experiment (EXP) * Comment: Isolation date and location of culture strains
South_Atlantic_OA * Latitude: -34.466670 * Longitude: 17.300000 * Date/Time Start: 2000-09-01T00:00:00 * Date/Time End: 2000-09-30T00:00:00 * Device: Experiment (EXP) * Comment: Isolation date and location of culture strains
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). The date of carbonate chemistry calculation by seacarb is 2014-01-20.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1Event labelEvent
2SpeciesSpeciesLanger, Gerald
3StrainStrainLanger, Gerald
4ReplicatesRepl#Langer, Gerald
5Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmLanger, GeraldCalculated using CO2SYS
6Coccoliths, normalCocco norm%Langer, Gerald
7Coccoliths, normal, standard deviationCocco norm std dev±Langer, Gerald
8Malformation rateMalformation%Langer, Gerald
9Malformation rate, standard deviationMalformation std dev±Langer, Gerald
10Coccoliths, incompleteCocco incomplete%Langer, Gerald
11Coccoliths, incomplete, standard deviationCocco incomplete std dev±Langer, Gerald
12Coccoliths, malformed and incompleteCocco malformed%Langer, Gerald
13Coccoliths, malformed and incomplete, standard deviationCocco malformed std dev±Langer, Gerald
14NitrateNO3µmol/lLanger, Gerald
15PhosphatePO4µmol/lLanger, Gerald
16Alkalinity, totalATµmol/kgLanger, GeraldPotentiometric titration
17Carbon, inorganic, dissolvedDICµmol/kgLanger, Gerald
18pHpHLanger, GeraldCalculated using CO2SYSNBS scale
19Bicarbonate ion[HCO3]-µmol/kgLanger, GeraldCalculated using CO2SYS
20Carbonate ion[CO3]2-µmol/kgLanger, GeraldCalculated using CO2SYS
21Calcite saturation stateOmega CalLanger, GeraldCalculated using CO2SYS
22SalinitySalLanger, Gerald
23Temperature, waterTemp°CLanger, Gerald
24Carbonate system computation flagCSC flagYang, YanCalculated using seacarb after Nisumaa et al. (2010)
25pHpHYang, YanCalculated using seacarb after Nisumaa et al. (2010)total scale
26Carbon dioxideCO2µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
27Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmYang, YanCalculated using seacarb after Nisumaa et al. (2010)
28Fugacity of carbon dioxide (water) at sea surface temperature (wet air)fCO2water_SST_wetµatmYang, YanCalculated using seacarb after Nisumaa et al. (2010)
29Bicarbonate ion[HCO3]-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
30Carbonate ion[CO3]2-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
31Aragonite saturation stateOmega ArgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
32Calcite saturation stateOmega CalYang, YanCalculated using seacarb after Nisumaa et al. (2010)
Size:
496 data points

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