The mosaic of habitats in the high-altitude Brazilian rupestrian fields is a hotspot for arbuscular mycorrhizal fungi

► The rupestrian fields are an AMF biodiversity hotspot. ► The species diversity of the AMF community is related to the variability among the mosaic of habitats composing the rupestrian fields. ► The soil texture is a strong driver of the AMF richness. ► The plant and AMF species richness were related.