Effects of environmental conditions on the leaf photosynthetic traits: Jmax, Jfac, k3 and SLA.

The factors are environmental growth conditions: radiation (PPFD), temperature (Tg), relative humidity (hs), air CO2 concentration (CO2 level), soil N availability (N level) and soil moisture (H2O level). A) Degree of freedom (d.f.), variance explained (%), statistical significance and sign (positive or negative) of interactions with continuous variables. B) Coefficients estimate of ANOVA model. All variable values were analyzed at a reference temperature of 20°C. Residuals of analysis followed a normal distribution without transformation for and Jmax, and with log-transformation for Jfac and k3. We only included in the ANOVA model the interactions that were significant.