Figure 5

Changes in leaf stomatal conductance of Amorpha fruticosa during the day as a function of the relative extractable water (REW) in the top 40 cm of the soil: REW_0–40 cm < 0.4 data from 17 June (soil water stress, with REW_0–40 cm = 0.33, EC_0–40 cm = 4.33 mS·cm⁻¹, EC_40–80 cm = 3.15 mS·cm⁻¹), REW_0–40 cm > 0.4 data from 22 June (no soil water stress, with REW_0–40 cm = 0.85, EC_0–40 cm = 3.32 mS·cm⁻¹, EC_40–80 cm = 3.12 mS·cm⁻¹).