Supplementary material 4 from: 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

Richness is shown for different elevations. The number of lakes within this elevation range is indicated. While mean richness ranges around 750 OTUs it drops to around 400 OTUs at high elevations. The transition seems to be around or slightly below 1400m.