Figure 1.

(a) Percentage of total mammal PD captured when optimizing for PD (triangles) and for species (diamonds). Almost 54% of our PD conservation targets could be achieved in just 2% of global land by optimizing for PD explicitly, increasing with total area protected to 99% in 17% of all land. (b) Increase in PD captured by optimizing for PD rather than for species, which is the proportional difference between the results in (a). The improvement is tiny for large land areas, but the benefit of using PD grows rapidly as available land reduces, to almost 32% more PD captured for 2% of land conserved. (Online version in colour.)