Seawater carbonate chemistry and particulate organic and inorganic carbon, growth of Emiliania huxleyi ...

• Main Authors: Gafar, Natasha A, Schulz, Kai Georg
• Format: Dataset
• Language: English
• Published: PANGAEA 2018
• Subjects: Bottles or small containers/Aquaria <20 L; Calcification/Dissolution; Chromista; Coast and continental shelf; Emiliania huxleyi; Growth/Morphology; Haptophyta; Laboratory experiment; Light; North Atlantic; Pelagos; Phytoplankton; Primary production/Photosynthesis; Single species; Temperate; Type; Species; Registration number of species; Uniform resource locator/link to reference; Growth rate; Carbon, organic, particulate, production per cell; Carbon, inorganic, particulate, production per cell; Carbon, organic, particulate, per cell; Carbon, inorganic, particulate, per cell; Fugacity of carbon dioxide water at sea surface temperature wet air; Carbon dioxide; Bicarbonate ion; Carbonate ion; pH; Hydrogen ion concentration; Alkalinity, total; Carbon, inorganic, dissolved; Irradiance; Temperature, water; Salinity; Carbonate system computation flag; Partial pressure of carbon dioxide water at sea surface temperature wet air; Aragonite saturation state; Calcite saturation state; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. 2010; Ocean Acidification International Coordination Centre OA-ICC; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.924611; https://doi.pangaea.de/10.1594/PANGAEA.924611

Coccolithophore responses to changes in carbonate chemistry speciation such as CO2 and H+ are highly modulated by light intensity and temperature. Here, we fit an analytical equation, accounting for simultaneous changes in carbonate chemistry speciation, light and temperature, to published and original data for Emiliania huxleyi, and compare the projections with those for Gephyrocapsa oceanica. Based on our analysis, the two most common bloom-forming species in present-day coccolithophore communities appear to be adapted for a similar fundamental light niche but slightly different ones for temperature and CO2, with E. huxleyi having a tolerance to lower temperatures and higher CO2 levels than G. oceanica. Based on growth rates, a dominance of E. huxleyi over G. oceanica is projected below temperatures of 22 °C at current atmospheric CO2 levels. This is similar to a global surface sediment compilation of E. huxleyi and G. oceanica coccolith abundances suggesting temperature-dependent dominance shifts. For a ... : In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2020) 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 by seacarb is 2020-10-30. ...