Seawater carbonate chemistry and phytoplankton productivity between coastal and offshore surface waters in the Taiwan Strait and the South China Sea ...

• Main Authors: Gao, Guang, Wang, Tifeng, Sun, J, Zhao, X, Wang, Lifang, Guo, Xianghui, Gao, Kunshan
• Format: Dataset
• Language: English
• Published: PANGAEA 2022
• Subjects: Bottles or small containers/Aquaria <20 L; Coast and continental shelf; Entire community; Laboratory experiment; North Pacific; Open ocean; Pelagos; Primary production/Photosynthesis; Temperate; Type; Station label; LONGITUDE; LATITUDE; Temperature, water; Salinity; Irradiance; Chlorophyll a; Treatment; Primary production of carbon per chlorophyll a; Change; 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; Carbonate system computation flag; Fugacity of carbon dioxide water at sea surface temperature wet air; Aragonite saturation state; Calcite saturation state; Calculated using CO2SYS; 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.953365; https://doi.pangaea.de/10.1594/PANGAEA.953365

Seawater acidification (SA) has been documented to either inhibit, enhance, or result in no effect on marine primary productivity (PP). In order to examine the effects of SA in changing environments, we investigated the influences of SA (a decrease of 0.4 pHtotal units with corresponding CO2 concentrations in the range of 22.0–39.7 µM) on PP through deck-incubation experiments at 101 stations in the Taiwan Strait and the South China Sea, including the continental shelf and slope, as well as the deep-water basin. The daily primary productivities in surface seawater under incident solar radiation ranged from 17–306 µg C/µg Chl a/d, with the responses of PP to SA being region-dependent and the SA-induced changes varying from −88 % (inhibition) to 57 % (enhancement). The SA treatment stimulated PP in surface waters of coastal, estuarine, and shelf waters but suppressed it in the South China Sea basin. Such SA-induced changes in PP were significantly related to in situ pH and solar radiation in surface seawater ... : 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 2023-01-05. ...