Fig. 6. Sensitivity analysis of CERES-PR to relative changes in model parameters associated with light capture (closed symbols), photosynthesis and respiration (open symbols), and temperature (gray symbols). Parameters reported are as follows: (average leaf angle); H (potential canopy height); X (parameter dictating leaf angle distribution according to Campbell, 1986); r_p (hourly maintenance respiration per unit of gross assimilation); r_g (hourly maintenance respiration per unit of dry weight growth); ka (slope parameter dictating reduction of leaf assimilation with age); as_t (temperature effect on light saturated assimilation, A_sat); and rm_t (temperature effect on maintenance respiration).