Fig. 3

Clustering tree showing similarity in tree species composition (βsim) among databases contributing entries to the Switchboard. The circular heatmap shows the number of tree species native to Africa (1), tropical Asia (2), temperate Asia (3), southern America (4), northern America (5), Australasia (6), Pacific (7) and Europe (8) based on the WCVP. The bar graph shows the number of tree species on a log10 scale within each database’s contribution, colour-coded by the type of database. Refer to text and Tables 1, 2 for database types.