Figure 2.

Linear regressions between leaf gas exchange parameters measured in fully expanded leaves of M. maximus at different levels of [CO₂] and temperature. A = net photosynthesis rate. g_s = stomatal conductance. E = transpiration rate. R² and p-values are shown for each regression line according to the color of each treatment. (A) Equations: aC = Y = 16,40*X + 30,19, eC = Y = 44,53*X + 31,92. (B) Equations: aCaT = Y = 5,437*X + 1,843, eCaT = Y = 5,100*X + 2,334, aCeT = Y = 3,237*X + 3,837, and eCeT = Y = 5,845*X + 2,763. Regressions were performed using the raw data from Habermann et al. (2019). Treatments: aC (ambient CO₂ concentration), eC (elevated CO₂ concentration – 600 ppm), aT (ambient temperature), and eT (elevated temperature - 2°C above ambient temperature).