Fig. 3From: Transpiration of four common understorey plant species according to drought intensity in temperate forestsTranspiration (average in mm day−1 m−2 LA, n = 8) under 70 % radiation as a function of VPD at a 100 % REW and b 20 % REW for the four species studied (symbols as in Fig. 2). Performances of the models was expressed by r 2 and P value: *** < 0.001, ** < 0.01, * < 0.05Back to article page