Fig. 6.
Effect of probability of survival and phosphorus diffusivity on optimal age of initiation of reproduction (A) and yield (B) for simulated Arabidopsis in low (1 µm; LP) and high (20 µm; HP) phosphorus. Simulations were carried out over a range of values of the effective phosphorus diffusion coefficient (De; 1·0 × 10−9 to 1·0 × 10−7 cm2 s−1, or 8·64 × 104 to 8·64 × 106 μm2 d−1) and with 3 survival scenarios with 50 % probability of surviving to: 84, 76 or 68 d (S84, S76 and S68). Survival scenario affected yield more than phenology. De affected both yield and phenology in low phosphorus, but had little effect in high phosphorus.