Ocean warming modulates the effects of acidification on Emiliania huxleyi calcification and sinking ...

• Main Authors: Milner, Sara, Langer, Gerald, Grelaud, Michaël, Ziveri, Patrizia
• Format: Dataset
• Language: English
• Published: PANGAEA 2016
• Subjects: Bottles or small containers/Aquaria <20 L; Calcification/Dissolution; Chromista; Emiliania huxleyi; Growth/Morphology; Haptophyta; Laboratory experiment; Laboratory strains; Mediterranean Sea; Pelagos; Phytoplankton; Primary production/Photosynthesis; Single species; Temperature; Type; Species; Registration number of species; Uniform resource locator/link to reference; Treatment; Coccoliths, normal; Coccoliths, normal, standard deviation; Malformation rate; Malformation rate, 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; Carbon, inorganic, particulate, production per cell; Particulate inorganic carbon, production, standard deviation; Carbon, organic, particulate, production per cell; Particulate organic carbon, production, standard deviation; Particulate inorganic carbon/particulate organic carbon ratio; Particulate inorganic carbon/particulate organic carbon ratio, standard deviation; Coccosphere, diameter; Coccosphere, diameter, standard deviation; Coccoliths; Coccoliths, standard deviation; Density; Density, standard deviation; Sinking velocity; Sinking velocity, standard deviation; Salinity; Temperature, water; Alkalinity, total; Carbon, inorganic, dissolved; pH; Partial pressure of carbon dioxide water at sea surface temperature wet air; Bicarbonate ion; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.869470; https://doi.pangaea.de/10.1594/PANGAEA.869470

Ongoing ocean warming and acidification are tied to the rapid accumulation of human-induced carbon dioxide (CO2) in the atmosphere and subsequent uptake of heat and CO2 by the surface ocean. These processes are expected to drive large changes in marine ecosystems. While numerous studies have examined the effects of ocean acidification on coccolithophores, less is known on their combined effect. In this study, we investigate temperature modulation of the carbonate chemistry sensitivity of the coccolithophore Emiliania huxleyi (RCC1827 from the Western Mediterranean) in a culture experiment. We analyzed the responses of coccolith morphology, particulate inorganic and organic carbon production, and sinking rate of individual cells. E. huxleyi was exposed to three CO2 levels (ca. 400 µatm, 900 µatm, and 1400 µatm) at 15°C and 20°C. Temperature adds to the negative effect of increasing pCO2 on coccolith morphology, suggesting that a significant number of E. huxleyi strains might suffer from a temperature ... : In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2016) 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 2016-12-13. ...