Fig. 5.
Phylogenetic diversity (mean phylogenetic distance) of woody plants versus mean annual rainfall at the regional scale (P = 0.0001), site (P < 0.0001), and plot scale (rainfall P = 0.031, soil type P = 0.21, interaction P = 0.29). Similar relationships (not shown) were found for phylogenetic diversity versus NDVI at the regional (P < 0.0002), site (P = 0.0001), and plot scale (NDVI P = 0.81, soil type P = 0.15, interaction P = 0.045); the plot–scale relationship with NDVI was significant for nonserpentine soils but not for serpentine soils.