Table III. A sensitivity analysis of the effect of changing assumed parameter values on predicted estimates of P/D, the proportional refixation rate during corticular photosynthesis.
Calculations were performed according to Equation 9. Parameters were varied one at a time, and all other parameters were fixed at the middle value when not under examination. The effect of a halving or a doubling of the middle value for each parameter is shown, except for δ13CD, which was varied by ±3‰. Symbols are as defined in Table I.
| Parameter | Range of Values | Predicted P/D |
| δ13CL − δ13CW (‰) | 0.25, 0.5, 1 | 0.94, 0.83, 0.62 |
| Cc/Wc (mol mol−1) | 0.05, 0.1, 0.2 | 0.59, 0.83, 0.95 |
| D (μmol m−2 s−1) | 1.5, 3, 6 | 0.86, 0.83, 0.82 |
| g (mmol m−2 s−1) | 0.5, 1, 2 | 0.82, 0.83, 0.86 |
| ca (μmol mol−1) | 190, 380, 760 | 0.82, 0.83, 0.86 |
| b (‰) | 15, 29, 58 | 0.45, 0.83, 0.99 |
| a (‰) | 2.2, 4.4, 8.8 | 0.85, 0.83, 0.80 |
| δ13CD (‰) | –25, –28, –31 | 0.70, 0.83, 0.95 |