Species Selection

Different species were selected in a plateau area of Tapajós National Forest (Santarém) and Reserva Biológica do Cueiras (ZF-2 – Manaus) (eight species in total; Table 1). Tree selection criteria were based on the proximity of the crowns to the two canopy access towers (K-34 and K-67). This approach enabled measurement of physiological variables including sap velocity at breast height, T_leaf, g_s, and Ψ_L from leaves at the top of the crowns, together with environmental variables including direct solar radiation, T_air, and R_H above the canopy (Supplementary Figure S2).

List of tree species instrumented with sap velocity and T_leaf sensors in Manaus and Santarém.