Fig. 3From: Understorey phylogenetic diversity in thermophilous deciduous forests: overstorey species identity can matter more than species richnessInteraction plot for the linear models showing the non-significant effect of overstorey species richness (OSR), considering only the target trees, on the relationship between understorey species richness (USR) and understorey phylogenetic diversity (PD), always strongly positive. To facilitate its interpretation, the interaction effect is here presented showing a resampling of OSR values in four classesBack to article page