Differing responses of three Southern Ocean Emiliania huxleyi ecotypes to changing seawater carbonate chemistry ...

• Main Authors: Müller, Marius N, Trull, Tom W, Hallegraeff, Gustaaf M
• Format: Dataset
• Language: English
• Published: PANGAEA 2015
• Subjects: Biomass/Abundance/Elemental composition; Bottles or small containers/Aquaria <20 L; Calcification/Dissolution; Chromista; Emiliania huxleyi; Growth/Morphology; Haptophyta; Laboratory experiment; Laboratory strains; Not applicable; Pelagos; Phytoplankton; Primary production/Photosynthesis; Single species; Type; Species; Registration number of species; Uniform resource locator/link to reference; Strain; Partial pressure of carbon dioxide water at sea surface temperature wet air; Partial pressure of carbon dioxide, standard deviation; Growth rate; Growth rate, standard deviation; Carbon, organic, particulate, per cell; Particulate organic carbon content per cell, standard deviation; Carbon, inorganic, particulate, per cell; Particulate inorganic carbon per cell, standard deviation; Nitrogen, organic, particulate, per cell; Particulate organic nitrogen per cell, standard deviation; Carbon, organic, particulate, production per cell; Particulate organic carbon, production, standard deviation; Carbon, inorganic, particulate, production per cell; Particulate inorganic carbon, production, standard deviation; Production of particulate organic nitrogen; Particulate organic nitrogen production, 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; Coccoliths, volume; Coccoliths, volume, standard deviation; Cell biovolume; Cell biovolume, standard deviation; Coccoliths, diameter; Coccoliths, diameter, standard deviation; Cell, diameter; Cell, diameter, standard deviation; pH; pH, standard deviation; Carbon, inorganic, dissolved; Southern Ocean; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.861839; https://doi.pangaea.de/10.1594/PANGAEA.861839

The invasion of anthropogenic carbon dioxide into the surface ocean is altering seawater carbonate speciation, a process commonly called ocean acidification. The high latitude waters of the Southern Ocean are one of the primary and most severely affected regions. Coccolithophores are an important phytoplankton group, responsible for the majority of pelagic calcium carbonate production in the world's oceans, with a distribution that ranges from tropical to polar waters. Emiliania huxleyi is numerically the most abundant coccolithophore species and appears in several different ecotypes. We tested the effects of ocean acidification on 3 carefully selected E. huxleyi ecotypes isolated from the Southern Ocean. Their responses were measured in terms of growth, photosynthesis, calcification, cellular geometry, and stoichiometry. The 3 ecotypes exhibited differing sensitivities in regards to seawater carbonate chemistry when cultured at the same temperature (14°C) and continuous light (110 µmol photons/m2/s). Under ... : In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2015) 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). The date of carbonate chemistry calculation is 2016-06-15. ...