Figure 4. a) Precipitation [mm] (focus precipitation event marked). b) Soil moisture (VWC [%*h-1]) and groundwater levels (measured every 2 weeks). c) Daily mean sap velocities measured at the maple tree and daily stem size variation as cumulative increments (measured for the stem-radius). d) Daily normalized sap velocity (sapvelocitynorm) and normalized Evapotranspiration (ETnorm).