1ICTA, Autonomous University of Barcelona (UAB), 08193 Bellaterra, Spain
2Alfred Wegener Institute for Polar and Marine Research, 27570 Bremerhaven, Germany
3CNRS/UPMC, Station Biologique de Roscoff, 29682 Roscoff, France
4FALW, Vrije Universiteit Amsterdam, 1081HV Amsterdam, The Netherlands
Received: 27 Mar 2009 – Discussion started: 17 Apr 2009
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.
Revised: 19 Oct 2009 – Accepted: 04 Nov 2009 – Published: 24 Nov 2009
Langer, G., Nehrke, G., Probert, I., Ly, J., and Ziveri, P.: Strain-specific responses of Emiliania huxleyi to changing seawater carbonate chemistry, Biogeosciences, 6, 2637-2646, doi:10.5194/bg-6-2637-2009, 2009.