Seawater carbonate chemistry and growth and physiology of the marine cyanobacterium Synechococcus (Cyanophyceae) ...

• Main Authors: Laws, Edward A, McClellan, S Alex
• Format: Dataset
• Language: English
• Published: PANGAEA 2022
• Subjects: Bacteria; Biomass/Abundance/Elemental composition; Bottles or small containers/Aquaria <20 L; Cyanobacteria; Growth/Morphology; Laboratory experiment; Laboratory strains; Light; Macro-nutrients; Not applicable; Pelagos; Phytoplankton; Primary production/Photosynthesis; Single species; Synechococcus elongatus; Temperature; Type; Species, unique identification; Species, unique identification URI; Species, unique identification Semantic URI; Temperature, water; Treatment; Irradiance; Partial pressure of carbon dioxide water at sea surface temperature wet air; Growth rate; Ratio; Photosynthetic carbon fixation rate, per chlorophyll a; Initial slope of the photosynthesis-irradiance curve; Carbon/Nitrogen ratio; Carbon/Chlorophyll a ratio; Salinity; Alkalinity, total; pH; Carbon dioxide, dissolved; Bicarbonate; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Fugacity of carbon dioxide water at sea surface temperature wet air; Bicarbonate ion; Carbon, inorganic, dissolved; Aragonite saturation state; Calcite saturation state; 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.952426; https://doi.pangaea.de/10.1594/PANGAEA.952426

The marine cyanobacterium Synechococcus elongatus was grown in a continuous culture system to study the interactive effects of temperature, irradiance, nutrient limitation, and the partial pressure of CO2 (pCO2) on its growth and physiological characteristics. Cells were grown on a 14:10 h light:dark cycle at all combinations of low and high irradiance (50 and 300 μmol photons/m**2/s, respectively), low and high pCO2 (400 and 1000 ppmv, respectively), nutrient limitation (nitrate-limited and nutrient-replete conditions), and temperatures of 20–45°C in 5°C increments. The maximum growth rate was ~4.5 · d−1 at 30–35°C. Under nutrient-replete conditions, growth rates at most temperatures and irradiances were about 8% slower at a pCO2 of 1000 ppmv versus 400 ppmv. The single exception was 45°C and high irradiance. Under those conditions, growth rates were ~45% higher at 1000 ppmv. Cellular carbon:nitrogen ratios were independent of temperature at a fixed relative growth rate but higher at high irradiance than at ... : 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 2022-12-15. ...