Plant–plant interactions influence phylogenetic diversity at multiple spatial scales in a semi-arid mountain rangeland

Molecular phylogenies are increasingly used to understand how biotic interactions and environment shape phylogenetic community structure (PCS). However, we do not understand the effects of plant–plant interactions and environment on PCS and phylogenetic diversity across spatial scales, particularly in rangelands. Here, we ask: (1) do plant–plant interactions and environment affect PCS and phylogenetic diversity differently across the three...