This data set provides information about tree structural parameters of holm oak trees (Quercus ilex L) and their changes derived from terrestrial laser scanning (TLS). The TLS acquisition was conducted at Majadas (39°56´024.68´´N, 5°45´50.27´´W; Majadas de Tiétar, Cáceres, Extremadura) in 2015 and in 2018. We scanned the footprint area of three different eddy covariance sites belonging to the European Flux Database (ES-LMa, ES-LM1, ES-LM2). The dataset “Tree Parameters” is in CSV and xlsx formats. Each row is a tree and columns represent different tree parameters. The columns are: Tree ID, coordinates, crown projected area, crown projected perimeter, tree maximum height, diameter at breast height (DBH), and clumping index (see README for more details). The crown perimeter, area and tree maximum height are derived from canopy height model. DBH was measured using caliper in 2015. DBH for 36 trees was additionally derived from TLS. Clumping index was calculated from TLS for 10 trees. The dataset “Temporal changes” is in CSV and xlsx formats. It includes absolute and percentage changes (between the scan in 2015 and the one in 2018) in crown projected area and maximum tree height for 174 trees under different management regimes. These management regimes include Nitrogen treatment (59 trees), Nitrogen and Phosphorus treatment (43 trees), and pruned trees (42 trees). 30 trees are control trees without pruning or fertilization.

The authors acknowledge the Alexander von Humboldt Foundation and the Max Planck Research Prize 2013 to Markus Reichstein that funded the research.