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Fig. 2 | BMC Biology

Fig. 2

From: Spatial phylogenetics of the native California flora

Fig. 2

Results of randomization tests, mapped with an overlay of the Jepson bioregions of California shown in the background. a Randomized phylogenetic diversity (PD). Cells in red have a significant under-representation of the phylogeny and are widespread in the southern half of the state. Cells in blue have a significant over-representation of the phylogeny and are scattered with a concentration in the northern Great Valley and Sierra foothills. c Randomized relative phylogenetic diversity (RPD). Cells in red have a significant concentration of short branches and occur in the desert and South Coast Ranges. Cells in blue have a significant concentration of long branches and occur in the northern Great Valley and Sierra foothills, North Coast Ranges, Bay Area, and southwest. Insets b and d show the significant cells for the two metrics plotted against precipitation for the area in which they occur. Cells with significantly low PD and RPD are concentrated at the low end of the precipitation gradient

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