Seawater carbonate chemistry and growth, production rates, and cellular composition of Arctic diatom ...

• Main Authors: Wolf, Klara K E, Romanelli, Elisa, Rost, Björn, John, Uwe, Collins, Sinéad, Weigand, Hannah, Hoppe, Clara Jule Marie
• Format: Dataset
• Language: English
• Published: PANGAEA 2019
• Subjects: Arctic; Biomass/Abundance/Elemental composition; Bottles or small containers/Aquaria <20 L; Chromista; Coast and continental shelf; Growth/Morphology; Laboratory experiment; Ochrophyta; Pelagos; Phytoplankton; Polar; Primary production/Photosynthesis; Single species; Temperature; Thalassiosira hyalina; Type; Species; Registration number of species; Uniform resource locator/link to reference; Strain; Treatment; Growth rate; Growth rate, standard deviation; Contribution; Contribution, standard deviation; Bulk division rate; Bulk division rate, standard deviation; Carbon, organic, particulate, per cell; Carbon, organic, particulate, standard deviation; Particulate organic carbon production per cell; Particulate organic carbon, production, standard deviation; Chlorophyll a per cell; Chlorophyll a, standard deviation; Carbon/Nitrogen ratio; Carbon/Nitrogen ratio, standard deviation; Carbon, organic, particulate/chlorophyll a ratio; Carbon, organic, particulate/chlorophyll a ratio, standard deviation; Maximum light use efficiency; Maximum light utilization coefficient in carbon per chlorophyll a, standard deviation; Maximal absolute electron transfer rate; Maximal electron transport rate, standard deviation; Irradiance; Irradiance, standard deviation; Salinity; Temperature, water; Partial pressure of carbon dioxide water at sea surface temperature wet air; Partial pressure of carbon dioxide, standard deviation; pH; pH, standard deviation; Alkalinity, total; Ocean acidification; Svalbard
• Online Access: https://dx.doi.org/10.1594/pangaea.913498; https://doi.pangaea.de/10.1594/PANGAEA.913498

Arctic phytoplankton and their response to future conditions shape one of the most rapidly changing ecosystems on the planet. We tested how much the phenotypic responses of strains from the same Arctic diatom population diverge and whether the physiology and intraspecific composition of multistrain populations differs from expectations based on single strain traits. To this end, we conducted incubation experiments with the diatom Thalassiosira hyalina under present‐day and future temperature and pCO2 treatments. Six fresh isolates from the same Svalbard population were incubated as mono‐ and multistrain cultures. For the first time, we were able to closely follow intraspecific selection within an artificial population using microsatellites and allele‐specific quantitative PCR. Our results showed not only that there is substantial variation in how strains of the same species cope with the tested environments but also that changes in genotype composition, production rates, and cellular quotas in the ... : 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 2020-03-06. ...