Seawater carbonate chemistry and effects of CO2 and their modulation by light in the life-cycle stages of the coccolithophore Emiliania huxleyi strains RCC 1216 and 1217 during experiments, 2012 ...

• Main Authors: Rokitta, Sebastian D, Rost, Björn
• Format: Dataset
• Language: English
• Published: PANGAEA 2012
• Subjects: Biomass/Abundance/Elemental composition; Bottles or small containers/Aquaria <20 L; Calcification/Dissolution; Chromista; Emiliania huxleyi; Growth/Morphology; Haptophyta; Laboratory experiment; Laboratory strains; Light; Not applicable; Pelagos; Phytoplankton; Primary production/Photosynthesis; Single species; Species; Experimental treatment; Salinity; Temperature, water; Nitrate; Phosphate; Radiation, photosynthetically active; LightDark cycle; Carbon dioxide, partial pressure; Carbon dioxide, partial pressure, standard deviation; pH; pH, standard deviation; Alkalinity, total; Alkalinity, total, standard deviation; Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard deviation; Bicarbonate ion; Bicarbonate ion, standard deviation; Carbonate ion; Carbonate ion, standard deviation; Calcite saturation state; Calcite saturation state, standard deviation; Growth rate; Growth rate, standard deviation; Carbon, inorganic, particulate, per cell; Particulate inorganic carbon per cell, standard deviation; Carbon, organic, particulate, per cell; Particulate organic carbon content per cell, standard deviation; Nitrogen, organic, particulate, per cell; Particulate organic nitrogen per cell, standard deviation; Particulate inorganic carbon/particulate organic carbon ratio; Particulate inorganic carbon/particulate organic carbon ratio, standard deviation; Carbon, organic, particulate/Nitrogen, organic, particulate ratio; Carbon, organic, particulate/Nitrogen, organic, particulate ratio, standard deviation; Carbon, organic, particulate, production per cell; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.777432; https://doi.pangaea.de/10.1594/PANGAEA.777432

The effects of ocean acidification on the life-cycle stages of the coccolithophore Emiliania huxleyi and their by light were examined. Calcifying diploid and noncalcifying haploid cells (Roscoff culture collection 1216 and 1217) were acclimated to present-day and elevated CO2 partial pressures (PCO2; 38.5 vs. 101.3 Pa, ., 380 vs. 1000 matm) under low and high light (50 vs. 300 mmol photons m-2 s-1). Growth rates as well as quotas and production rates of C and N were measured. Sources of inorganic C for biomass buildup were using a 14C disequilibrium assay. Photosynthetic O2 evolution was measured as a function of dissolved inorganic C and light by means of membrane-inlet mass spectrometry. The diploid stage responded to elevated PCO2 by shunting resources from the production of particulate inorganic C toward organic C yet keeping the production of total particulate C constant. As the effect of ocean acidification was stronger under low light, the diploid stage might be less affected by increased acidity when ... : 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). ...