Figure 4From: Hotspot analysis of Taiwanese breeding birds to determine gaps in the protected area network Threatened species richness and hotspots. (a) The threatened species richness was determined by adding up the 31 final maps of the 49 threatened birds of the island of Taiwan (see details in Wu et al. 2013). (b) Top 5% hotspots and (c) hotspots outside of protected areas (specifics as described in Figure 2).Back to article page