TY - DATA ID - schouten2006eteo T1 - Experiment: The effect of temperature, salinity and growth rate on the stable hydrogen isotopic composition of long chain alkenones produced by Emiliania huxleyi and Gephyrocapsa oceanica AU - Schouten, Stefan AU - Ossebaar, Jort AU - Schreiber, Karolin AU - Kienhuis, Michiel V M AU - Langer, Gerald AU - Benthien, Albert AU - Bijma, Jelle PY - 2006 T2 - Supplement to: Schouten, S et al. (2006): The effect of temperature, salinity and growth rate on the stable hydrogen isotopic composition of long chain alkenones produced by Emiliania huxleyi and Gephyrocapsa oceanica. Biogeosciences, 3(1), 113-119, https://doi.org/10.5194/bg-3-113-2006 PB - PANGAEA DO - 10.1594/PANGAEA.832017 UR - https://doi.org/10.1594/PANGAEA.832017 N2 - Two haptophyte algae, Emiliania huxleyi and Gephyrocapsa oceanica, were cultured at different temperatures and salinities to investigate the impact of these factors on the hydrogen isotopic composition of long chain alkenones synthesized by these algae. Results showed that alkenones synthesized by G. oceanica were on average depleted in D by 30 compared to those of E. huxleyi when grown under similar temperature and salinity conditions. The fractionation factor, alpha alkenones-H2O, ranged from 0.760 to 0.815 for E. huxleyi and from 0.741 to 0.788 for G. oceanica. There was no significant correlation of alpha alkenones-H2O with temperature but a positive linear correlation was observed between alpha alkenones-H2O and salinity with ~3 change in fractionation per salinity unit and a negative correlation between alpha alkenones-H2O and growth rate. This suggests that both salinity and growth rate can have a substantial impact on the stable hydrogen isotopic composition of long chain alkenones in natural environments. ER -