Figure 3.

Comparison between FvCB model net assimilation (An, μmol m⁻² s⁻¹) projections with observations after parameter optimization for each A_n/C_i curve (n = 19), for the P. sylvestris saplings grown in the greenhouse in year 2019. Reported are the fit (R²), the median optimum V_cmax,25 ± 95% confidence interval, and the median optimum J_max,25 ± 95% confidence interval. The solid line indicates the trend between observed and modeled An (p < 0.01), with the gray area representing the 95% CI. The slope was not significantly different than 1 (p > 0.1), and intercept was not significantly different than 0 (p > 0.1) based on a t-test. Dashed line represents the 1:1 fit.