Seawater carbonate chemistry and community structure and function of phytoplankton community ...

• Main Authors: Wang, Peixuan, Laws, Edward A, Wang, Y, Chen, Jixin, Song, Xue, Huang, Ruiping, Wang, Tifeng, Yi, Xiangqi, Sun, J, Guo, Xianghui, Liu, Xin, Gao, Kunshan, Huang, Bangqin
• Format: Dataset
• Language: English
• Published: PANGAEA 2022
• Subjects: Coast and continental shelf; Community composition and diversity; Entire community; Growth/Morphology; Laboratory experiment; Mesocosm or benthocosm; Mortality/Survival; North Pacific; Pelagos; Temperate; Type; Day of experiment; Identification; Treatment; Sampling date; Temperature, water; Salinity; Carbon, inorganic, dissolved; Alkalinity, total; Partial pressure of carbon dioxide water at sea surface temperature wet air; Carbon dioxide; Bicarbonate ion; Carbonate ion; pH; Phosphate; Nitrate and Nitrite; Nitrite; Silicate; Ammonium; Peridinin; Fucoxanthin; Abundance; Chlorophyll a; Abundance per volume; Mortality; Signal; Cell size, standard deviation; Carbonate system computation flag; Fugacity of carbon dioxide water at sea surface temperature wet air; Aragonite saturation state; Calcite saturation state; Experiment; Calculated using CO2SYS; Spectrophotometric; 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.945582; https://doi.pangaea.de/10.1594/PANGAEA.945582

The rise of atmospheric pCO2 has created a number of problems for marine ecosystem. In this study, we initially quantified the effects of elevated pCO2 on the group-specific mortality of phytoplankton in a natural community based on the results of mesocosm experiments. Diatoms dominated the phytoplankton community, and the concentration of chlorophyll a was significantly higher in the high-pCO2 treatment than the low-pCO2 treatment. Phytoplankton mortality (percentage of dead cells) decreased during the exponential growth phase. Although the mortality of dinoflagellates did not differ significantly between the two pCO2 treatments, that of diatoms was lower in the high-pCO2 treatment. Small diatoms dominated the diatom community. Although the mortality of large diatoms did not differ significantly between the two treatments, that of small diatoms was lower in the high-pCO2 treatment. These results suggested that elevated pCO2 might enhance dominance by small diatoms and thereby change the community structure ... : In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2021) 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 2022-06-20. ...