Phylogenetic affiliation of reads and OTUs to eukaryotic taxonomic groups. The area of the portion of the pie chart represents the number of reads, whereas the angle represents the relative contribution to OTU richness. Alveolates and in particular Ciliophora and Dinoflagellata contributed nearly 50 % to global OTU richness. Cryptophyta, Viridiplantae (without Embryophyta), as well as Chrysophyceae and Diatomea accounted for the majority of the remaining OTUs. Unlabeled pieces within the eukaryotic supergroups comprise all other taxa affiliated with that group.

 
  Part of: Boenigk J, Wodniok S, Bock C, Beisser D, Hempel C, Grossmann L, Lange A, Jensen M (2018) Geographic distance and mountain ranges structure freshwater protist communities on a European scalе. Metabarcoding and Metagenomics 2: e21519. https://doi.org/10.3897/mbmg.2.21519