Extended Data Fig. 5: Representativeness according to freshwater ecoregions.
From: National assessment of river protection in the United States
Percentage of river length protected according to different classes of the Protected River Index (PRI) (colored sectors; right) within freshwater ecoregions and percentage of total river length across freshwater ecoregions (white sectors; left). The inset illustrates the spatial distribution of the freshwater ecoregions corresponding to numbers in brackets on the barplot labels.
