Vegetation cover was visually estimated on the plots of the research project RTG2300 between Mid May and Early June 2020 using the Braun-Blanquet method (Braun-Blanquet 1951). Subplots of 100m² size were established in the southeastern corner of the plots. Cover of all plant species was estimated in discrete steps of 10% (10% to 100% cover) 1 % (1% to 10% cover). Cover estimates between 0.5% and 0.99% were recorded as '+' and cover estimates below 0.5% were recorded with an 'r'. Plant cover in four different layers (tree, shrub, herb and moss) was estimated. Within each layer, cover of all individual plant species and cover of all plants combined ('layer_total') was estimated. Due to overlap of some species, cover of all individual species does not sum up to the layer total. For the moss layer only the layer total was estimated and no identification of individual moss species was done.