Data Description

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Citation:
Hoppe, CJM et al. (2011): Seawater carbonate chemistry and biological processes of Emiliania huxleyi (strains RCC1256 and NZEH) during experiments, 2011. doi:10.1594/PANGAEA.763842,
Supplement to: Hoppe, Clara Jule Marie; Langer, Gerald; Rost, Björn (2011): Emiliania huxleyi shows identical responses to elevated pCO2 in TA and DIC manipulations. Journal of Experimental Marine Biology and Ecology, 406(1-2), 54-62, doi:10.1016/j.jembe.2011.06.008
Abstract:
With respect to their sensitivity to ocean acidification, calcifiers such as the coccolithophore Emiliania huxleyi have received special attention, as the process of calcification seems to be particularly sensitive to changes in the marine carbonate system. For E. huxleyi, apparently conflicting results regarding its sensitivity to ocean acidification have been published (Iglesias-Rodriguez et al., 2008a; Riebesell et al., 2000). As possible causes for discrepancies, intra-specific variability and different effects of CO2 manipulation methods, i.e. the manipulation of total alkalinity (TA) or total dissolved inorganic carbon (DIC), have been discussed. While Langer et al. (2009) demonstrate a high degree of intra-specific variability between strains of E. huxleyi, the question whether different CO2 manipulation methods influence the cellular responses has not been resolved yet. In this study, closed TA as well as open and closed DIC manipulation methods were compared with respect to E. huxleyi's CO2-dependence in growth rate, POC- and PIC-production. The differences in the carbonate chemistry between TA and DIC manipulations were shown not to cause any differences in response patterns, while the latter differed between open and closed DIC manipulation. The two strains investigated showed different sensitivities to acidification of seawater, RCC1256 being more negatively affected in growth rates and PIC production than NZEH.
Project(s):
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 InvestigatorMethodComment
1Species *SpeciesHoppe, Clara Jule Marie *
2Experimental treatment *Exp trtmHoppe, Clara Jule Marie *
3Comment *CommentHoppe, Clara Jule Marie *
4Sample ID *IDHoppe, Clara Jule Marie *
5Salinity *SalHoppe, Clara Jule Marie *
6Temperature, water *Temp°CHoppe, Clara Jule Marie *
7Alkalinity, total *ATµmol/kgHoppe, Clara Jule Marie *Alkalinity, Gran titration (Gran, 1950) *
8Total carbon *TCµmol/kgHoppe, Clara Jule Marie *Seal Analytical QuAAtro analyser *
9pH *pHHoppe, Clara Jule Marie *Calculated using CO2SYS *NBS scale
10Partial pressure of carbon dioxide (water) at sea surface temperature (wet air) *pCO2water_SST_wetµatmHoppe, Clara Jule Marie *Calculated using CO2SYS *
11Bicarbonate ion *[HCO3]-µmol/kgHoppe, Clara Jule Marie *Calculated using CO2SYS *
12Carbonate ion *[CO3]2-µmol/kgHoppe, Clara Jule Marie *Calculated using CO2SYS *
13Carbon dioxide *CO2µmol/kgHoppe, Clara Jule Marie *Calculated using CO2SYS *
14Calcite saturation state *Omega CalHoppe, Clara Jule Marie *Calculated using CO2SYS *
15Growth rate *µ#/dayHoppe, Clara Jule Marie *calculated *
16Particulate organic carbon content per cell *POC contpg/cellHoppe, Clara Jule Marie *Mass spectrometer ANCA-SL 20-20 Europa Scientific *
17Production of particulate organic carbon *POC prodpg/cell/dayHoppe, Clara Jule Marie *calculated *
18Particulate inorganic carbon content per cell *PIC contpg/#Hoppe, Clara Jule Marie *calculated *
19Particulate inorganic carbon production per day *PIC prodpg/cell/dayHoppe, Clara Jule Marie *calculated *
20Particulate inorganic carbon/particulate organic carbon ratio *PIC/POC ratioHoppe, Clara Jule Marie *calculated *
21Carbonate system computation flag *CSC flagNisumaa, Anne-Marin *Calculated using seacarb after Nisumaa et al. (2010) *
22pH *pHNisumaa, Anne-Marin *Calculated using seacarb after Nisumaa et al. (2010) *Total scale
23Carbon dioxide *CO2µmol/kgNisumaa, Anne-Marin *Calculated using seacarb after Nisumaa et al. (2010) *
24Partial pressure of carbon dioxide (water) at sea surface temperature (wet air) *pCO2water_SST_wetµatmNisumaa, Anne-Marin *Calculated using seacarb after Nisumaa et al. (2010) *
25Fugacity of carbon dioxide (water) at sea surface temperature (wet air) *fCO2water_SST_wetµatmNisumaa, Anne-Marin *Calculated using seacarb after Nisumaa et al. (2010) *
26Bicarbonate ion *[HCO3]-µmol/kgNisumaa, Anne-Marin *Calculated using seacarb after Nisumaa et al. (2010) *
27Carbonate ion *[CO3]2-µmol/kgNisumaa, Anne-Marin *Calculated using seacarb after Nisumaa et al. (2010) *
28Aragonite saturation state *Omega ArgNisumaa, Anne-Marin *Calculated using seacarb after Nisumaa et al. (2010) *
29Calcite saturation state *Omega CalNisumaa, Anne-Marin *Calculated using seacarb after Nisumaa et al. (2010) *
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