Seawater carbonate chemistry and biological processes during experiments with four strains of Emiliania huxleyi

  • Gerald Langer (Contributor)
  • Gernot Nehrke (Contributor)
  • Ian Probert (Contributor)
  • J Ly (Contributor)
  • Patrizia Ziveri (Contributor)



Abstract: Four strains of the coccolithophore E. huxleyi (RCC1212, RCC1216, RCC1238, RCC1256) were grown in dilute batch culture at four CO2 levels ranging from ~200 µatm to ~1200 µatm. Growth rate, particulate organic carbon content, and particulate inorganic carbon content were measured, and organic and inorganic carbon production calculated. The four strains did not show a uniform response to carbonate chemistry changes in any of the analysed parameters and none of the four strains displayed a response pattern previously described for this species. We conclude that the sensitivity of different strains of E. huxleyi to acidification differs substantially and that this likely has a genetic basis. We propose that this can explain apparently contradictory results reported in the literature.

Category: geoscientificInformation

Source: Supplement to: Langer, Gerald; Nehrke, Gernot; Probert, Ian; Ly, J; Ziveri, Patrizia (2009): Strain-specific responses of Emiliania huxleyi to changing seawater carbonate chemistry. Biogeosciences, 6(11), 2637-2646,

Supplemental Information: 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).

Coverage: EVENT LABEL: 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 * METHOD/DEVICE: Experiment
EVENT LABEL: 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 * METHOD/DEVICE: Experiment
EVENT LABEL: 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 * METHOD/DEVICE: Experiment
EVENT LABEL: Tasman_Sea_OA * LATITUDE: -42.300000 * LONGITUDE: 169.833330 * DATE/TIME START: 1998-09-01T00:00:00 * DATE/TIME END: 1998-09-30T00:00:00 * METHOD/DEVICE: Experiment
Date made available1 Jan 2009
PublisherUnknown Publisher

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