Fig. 2.

Steady-state photosynthetic traits estimated via A/C_i curves. (A) The variation between lines for photosynthetic CO₂ uptake at saturating light and ambient CO₂ concentration (A_sat). (B) The variation between lines for photosynthetic CO₂ uptake at saturating light and elevated CO₂ concentration (A_max). For graphs, horizontal lines within boxes indicate the median and boxes indicate the upper (75%) and lower (25%) quartiles. Whiskers indicate the ranges of the minimum and maximum values. Circles indicate outliers. Data were analysed with ANCOVA (n=2–10), and P-values for the main effects are shown in the graph.