[This dataset is embargoed until September 30, 2027]. This dataset comprises 14 traits related to plant hydraulic function collected on 16 Dinizia Excelsa trees ranging from 19.7-74 m tall in the Parque Nacional Montanhas de Tumucumaque, Northeast Amazon, Brazil. Traits were always measured in a top canopy position and when crown depth allowed along a lower and a branch. These data were all collected following standardised methodologies for each trait sampled and they were all collected during one field campaign which took place during November 2024. The aim of this data set was to test whether tree height alters the water transport system of trees to make them more vulnerable to the impacts of drought. Full details about this dataset can be found at https://doi.org/10.5285/1dba26ab-1aa8-45f1-baab-5bdf25a1c7a0
