Fig. 7From: Environment and tree size controlling stem sap flux in a perhumid tropical forest of Central Sulawesi, IndonesiaRelationship between estimated daily transpiration rate in 2008 (mm day−1) per tree height class and the environmental variables vapour pressure deficit (D in kPa, left), solar radiation (R in W m−2, centre), and volumetric soil water content (SWC in%, right). The correlation coefficients and parameter estimates are listed in Table 3 Back to article page