Seed production of European beech (Fagus sylvatica) is assessed yearly by the Netherlands Institute of Ecology (NIOO-KNAW) since 1976. The data contains individual-level information on beechnut production of a selected set of trees in the National Park De Hoge Veluwe, Netherlands, consisting of counts and weights.

This dataset is structured as a Darwin Core Archive consisting of an event core, and two extensions: occurrence and measurement or fact. Descriptive and administrative metadata are stored in EML and structural metadata in the meta.xml file. The dataset additionally consists of a supplementary data file ("Include_dates") that indicates which sampling date per year should be included in analyses. Only in a few years several dates were sampled and this ensures selecting only one representative date for these years and thereby consistency with years where only one sample was taken. The R script provides a short pipeline to convert the Darwin Core Archive structure into a structure more easily usable for data analyses.