The acclimation process of phytoplankton biomass, carbon fixation and respiration to the combined effects of elevated temperature and pCO2 in the northern South China Sea, supplement to: Gao, Guang; Jin, Peng; Liu, Nana; Li, Futian; Tong, Shanying; Hutchins, David A; Gao, Kunshan (2017): The acclimation process of phytoplankton biomass, carbon fixation and respiration to the combined effects of elevated temperature and p CO 2 in the northern South China Sea. Marine Pollution Bulletin, 118(1-2), 213-220

• Main Authors: Gao, Guang, Jin, Peng, Liu, Nana, Li, Futian, Tong, Shanying, Hutchins, David A, Gao, Kunshan
• Format: Dataset
• Language: English
• Published: PANGAEA - Data Publisher for Earth & Environmental Science 2017
• Subjects: Coast and continental shelf; Containers and aquaria 20-1000 L or < 1 m**2; Entire community; Laboratory experiment; North Pacific; Open ocean; Pelagos; Primary production/Photosynthesis; Respiration; Temperature; Tropical; Event label; Type; Experiment duration; Station label; Treatment; Chlorophyll a; Chlorophyll a, standard deviation; Primary production of carbon; Primary production of carbon, standard deviation; Primary production of carbon per chlorophyll a; Respiration rate, carbon; Respiration rate, carbon dioxide, standard deviation; Respiration rate, carbon, per chlorophyll a; Respiration/net photosynthesis ratio; Respiration/net photosynthesis ratio, standard deviation; Temperature, water; Temperature, water, standard deviation; pH; pH, standard deviation; 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; Bicarbonate ion; Bicarbonate ion, standard deviation; Carbonate ion; Carbonate ion, standard deviation; Carbon dioxide; Carbon dioxide, standard deviation; Alkalinity, total; Alkalinity, total, standard deviation; Salinity; Carbonate system computation flag; Fugacity of carbon dioxide water at sea surface temperature wet air; Aragonite saturation state; Calcite saturation state; Experiment; Potentiometric; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. 2010; Ocean Acidification International Coordination Centre OA-ICC; Pacific; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.875086; https://doi.pangaea.de/10.1594/PANGAEA.875086

We conducted shipboard microcosm experiments at both off-shore (SEATS) and near-shore (D001) stations in the northern South China Sea (NSCS) under three treatments, low temperature and low pCO2 (LTLC), high temperature and low pCO2 (HTLC), and high temperature and high pCO2 (HTHC). Biomass of phytoplankton at both stations were enhanced by HT. HTHC did not affect phytoplankton biomass at station D001 but decreased it at station SEATS. HT alone increased net primary productivity by 234% at station SEATS and by 67% at station D001 but the stimulating effect disappeared when HC was combined. HT also increased respiration rate by 236% at station SEATS and by 87% at station D001 whereas HTHC reduced it by 61% at station SEATS and did not affect it at station D001. Overall, our findings indicate that the positive effect of ocean warming on phytoplankton assemblages in NSCS could be damped or offset by ocean acidification. : 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 by seacarb is 2017-05-08.