Figure 1.

A representative response of stomatal conductance (g_s) of Olea europea to a step increase in evaporative demand from 15 to 25 mmol mol⁻¹ (decrease in relative humidity from 52% to 20%) at t₁, followed by leaf excision at the petiole at t₄. The points in time and corresponding g_s values used to calculate the WWR and RWR parameters (t₁–t₆ and g₁, g₂, g₄, and g₅; note that g₃ ≡ g₁ and g₆ ≡ g₄) as described in “Materials and Methods” are represented diagrammatically.