Functional traits of the tallest tropical tree species in the Tumucumaque Mountains National Park, Brazil, 2024

Samples were collected from 14 individuals of the species Dinizia excelsa throughout November 2024. To measure trait values 1-2m length branches were extracted from each sample location in the tree crowns (upper crown, and when crown depth allowed, also mid-crown and lower-crown). Vertical height and horizontal distance from the main stem were recorded for each excised branch to enable hydraulic path length to be calculated. Immediately after sampling material was sealed in moist bags and transported to field laboratory in the Jupara Base (10-30 min walking distance), where functional traits were measured. The traits measured included leaf and wood structural traits and leaf and wood hydraulic traits. The full list of traits measures and procedures used to measure the traits are laid out in the supporting information. All data were entered into a excel spreadsheet and saved as a .csv file.