Publication Date:
2024-04-03
Description:
There is a growing consensus that the ongoing increase in atmospheric CO2 level will lead to a variety of effects on marine phytoplankton and ecosystems. However, the effects of CO2 enrichment on eutrophic coastal waters are still unclear, as are the complex mechanisms coupled to the development of eutrophication. Here, we report the first mesocosm CO2 perturbation study in a eutrophic subtropical bay during summer by investigating the effect of rising CO2 on a model artificial community consisting of well-characterized cultured diatoms (Phaeodactylum tricornutum and Thalassiosira weissflogii) and prymnesiophytes (Emiliania huxleyi and Gephyrocapsa oceanica). These species were inoculated into triplicate 4 m**3 enclosures with equivalent chlorophyll a (Chl-a) under present and higher partial pressures of atmospheric CO2 (pCO2 = 400 and 1000 ppmv). Diatom bloom events were observed in all enclosures, with enhanced organic carbon production and Chl-a concentrations under high CO2 treatments. Relative to the low CO2 treatments, the consumption of the dissolved inorganic nitrogen and uptake ratios of N/P and N/Si increased significantly during the bloom. These observed responses suggest more extensive and complex effects of higher CO2 concentrations on phytoplankton communities in coastal eutrophic environments.
Keywords:
19-Hexanoyloxyfucoxanthin; 19-Hexanoyloxyfucoxanthin, standard deviation; 19-Hexanoyloxyfucoxanthin/chlorophyll a; 19-Hexanoyloxyfucoxanthin/chlorophyll a, standard deviation; Alkalinity, total; Alkalinity, total, standard deviation; Ammonium; Ammonium, standard deviation; Aragonite saturation state; Bicarbonate ion; Biomass/Abundance/Elemental composition; Calcification/Dissolution; Calcification rate of calcium carbonate; Calcite saturation state; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard deviation; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Chlorophyll a; Chlorophyll a, standard deviation; Coast and continental shelf; Entire community; EXP; Experiment; Field experiment; Fucoxanthin; Fucoxanthin, standard deviation; Fucoxanthin/chlorophyll a ratio; Fucoxanthin/chlorophyll a ratio, standard devitation; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Identification; Mesocosm or benthocosm; Nitrate and Nitrite; Nitrate and Nitrite, standard deviation; Nitrogen, inorganic, dissolved; Nitrogen, inorganic, dissolved, standard deviation; Nitrogen/Phosphorus ratio; Nitrogen/Phosphorus ratio, standard deviation; Nitrogen/Silicon ratio; Nitrogen/Silicon ratio, standard deviation; North Pacific; OA-ICC; Ocean Acidification International Coordination Centre; Partial pressure of carbon dioxide, standard deviation; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Particulate inorganic carbon/particulate organic carbon ratio; Particulate organic carbon production; Pelagos; pH; pH, standard deviation; Phosphate; Phosphate, standard deviation; Primary production/Photosynthesis; Production of Carbon, organic, dissolved; Ratio; Ratio, standard deviation; Salinity; Salinity, standard deviation; Silicate; Temperate; Temperature, water; Temperature, water, standard deviation; Time in days; Treatment; Type; Wuyuan_Bay
Type:
Dataset
Format:
text/tab-separated-values, 1150 data points
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