Fig. 1: Sample locations and mycorrhizal richness trends by biome.
From: Global hotspots of mycorrhizal fungal richness are poorly protected
a,b, Distribution of sites and richness estimates for AM fungi (a) and EcM fungi (b). VT were created from SSU sequences for AM fungi, and 97% similar OTUs were created from ITS sequences and assigned to EcM fungi. Mycorrhizal richness patterns across terrestrial biomes are shown in boxplots (mangroves, flooded grasslands and rock and ice biomes not shown owing to low numbers of samples in both datasets). Global distributions of estimated richness are shown in density curves above biome-level boxplots. Boxplots indicate the median (centre line), first and third quartiles (lower and upper box edges) and 1.5× the interquartile range (IQR) (box whiskers). EcM richness data are shown as square-root transformed for visualization. Richness estimates were calculated using a rarefaction and extrapolation approach that incorporates sequencing depth per sample. Points shown here are all samples that passed quality-control checks and used as training data.
