Sap flow sap flow 16 Capacitance 6 Cerrado 6 Plant-water relations 6 Water relations 6 cerrado 6 stomatal conductance 6 transpiration 6 Argentina 4 Brazil 4 Hydraulic conductivity 4 Nocturnal transpiration 4 Plant Leaves 4 Plant Stems 4 Soil 4 Stomata 4 Water 4 adaptation 4 hydraulic conductivity 4 metabolism 4 physiology 4 plant leaf 4 plant stem 4 savanna 4 subtropical region 4 water 4 water relations 4 xylem 4 Air saturation deficit 2