Will phytoplankton cell areas change with elevated pCO2?
There was no significant difference in cell size for (A) P. micans and (C) D. brightwelli (p>0.05) but (B) D. tertiolecta was significantly larger in high CO2 (p<0.05). Standard errors are shown.
Will phytoplankton growth rates change with elevated pCO2?
(A) P. micans and (B) D. tertiolecta grew significantly faster under high pCO2 (p<0.05), but (C) D. brightwellii's growth rate was similar across pCO2 treatments (p>0.05). Standard errors are shown.
Will phytoplankton change their CO2 and nutrient uptake rates in elevated pCO2?
For P. micans, there was no significant difference in phosphate and nitrate uptake between treatments (p>0.05). For CO2 uptake we found a significant difference between low [400 ppmv] and high [750 ppmv and 1000 ppmv] concentrations of CO2 (p<0.05). Standard errors are shown.
No significant difference in phosphate and nitrate uptake was observed for D. tertiolecta (p>0.05). CO2 uptake presented a significant difference between low [400 ppmv] and high [750 ppmv and 1000 ppmv] concentrations of CO2 (p<0.05). Standard errors are shown.
