| VCMAX’ and JMAX’ | altered Vcmax and Jmax under water stress conditions |
| Rswc | relative available soil water holding capacity (−) |
| RL = 0.6 | limit value of relative soil water content below which VCMAX is affected |
| (−), average of the range indicated by (Keenan et al., 2009a) | |
| EQV = 0.4 | parameter to account for non-linear decline of VCMAX with drought increase, |
| average of the range indicated by (Keenan et al., 2009a) | |
| EQJ = ≤0.4 | parameter to account for non-linear decline of JMAX with drought increase |