Seawater carbonate chemistry and productivity and species composition of a late summer phytoplankton community of the coastal Western Antarctic Peninsula ...

• Main Authors: Heiden, Jasmin, Völkner, Christian, Jones, Elizabeth M, van De Poll, Willem H, Buma, Anita G J, Meredith, Michael P, de Baar, Hein J W, Bischof, Kai, Wolf-Gladrow, Dieter A, Trimborn, Scarlett
• Format: Dataset
• Language: English
• Published: PANGAEA 2019
• Subjects: Antarctic; Biomass/Abundance/Elemental composition; Bottles or small containers/Aquaria <20 L; Community composition and diversity; Entire community; Growth/Morphology; Laboratory experiment; Light; Open ocean; Pelagos; Polar; Primary production/Photosynthesis; Type; Time point, descriptive; Treatment; Carbon/Nitrogen ratio; Carbon/Nitrogen ratio, standard deviation; Particulate organic carbon production; Particulate organic carbon, production, standard deviation; Chlorophyll a/particulate organic carbon ratio; Chlorophyll a/particulate organic carbon ratio, standard deviation; Diadinoxanthin + Diatoxanthin/chlorophyll a ratio; Diadinoxanthin + Diatoxanthin/chlorophyll a ratio, standard deviation; Phosphate; Thymidine uptake rate, standard deviation; Silicate; Silicate, standard deviation; Cell density; Cell density, standard deviation; Net primary production of carbon per particulate organic carbon; Primary production of carbon, standard deviation; Species; Abundance; Growth rate; Growth rate, standard deviation; Salinity; Temperature, water; Partial pressure of carbon dioxide water at sea surface temperature wet air; Partial pressure of carbon dioxide, standard deviation; Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard deviation; Alkalinity, total; Alkalinity, total, standard deviation; pH; pH, standard deviation; Carbonate system computation flag; Carbon dioxide; Fugacity of carbon dioxide water at sea surface temperature wet air; Bicarbonate ion; Carbonate ion; Antarc*; Antarctic Peninsula; Antarctica; Ocean acidification; Southern Ocean
• Online Access: https://dx.doi.org/10.1594/pangaea.907767; https://doi.pangaea.de/10.1594/PANGAEA.907767

The Western Antarctic Peninsula (WAP), one of the most productive regions of the Southern Ocean, is currently undergoing rapid environmental changes such as ocean acidification (OA) and increased daily irradiances from enhanced surface‐water stratification. To assess the potential for future biological CO2 sequestration of this region, we incubated a natural phytoplankton assemblage from Ryder Bay, WAP, under a range of pCO2 levels (180 μatm, 450 μatm, and 1000 μatm) combined with either moderate or high natural solar radiation (MSR: 124 μmol photons/m**2/s and HSR: 435 μmol photons/ m**2/s, respectively). The initial and final phytoplankton communities were numerically dominated by the prymnesiophyte Phaeocystis antarctica, with the single cells initially being predominant and solitary and colonial cells reaching similar high abundances by the end. Only when communities were grown under ambient pCO2 in conjunction with HSR did the small diatom Fragilariopsis pseudonana outcompete P. antarctica at the end of ... : In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2019) 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 2019-10-24. ...