“…We try to discuss and highlight this in our recent paper Jougnot et al (2019). P.4 lines 8-20: one can note that Doussan et al (2002) did perform some long-term monitorings of vertical flow and Voytek et al (2019) vertical and horizontal close to a tree. P.8 line 3: "vertical" could be misleading as it could be understood as at various depths.…”