FIGURE 3 The current potential distribution map of Francois’ langur
3.5 Future changes in suitable habitat
Under future climate conditions (2021-2040, 2041-2060, 2061-2080, and 2081-2100) in the SSP245 climate scenario, the area of the potential geographical distribution of Francois’ langur was predicted to decrease compared to the current situation. Habitat suitability maps for future climate models are shown in Figure 4. By 2021-2040, the high potential suitable area for Francois’ langur would decrease by 76.73%. Similarly, the moderately suitable area would decrease by 50.87% and the low suitable area would decrease by 46.22%. By 2041-2060, however, the highly, moderately and poorly suitable areas for Francois’ langur would only decrease by 20.47%, 21.42% and 40.81% respectively, revealing an increase in the suitable area for Francois’ langur compared to the period of 2021-2040. By 2061-2080, the high suitable area for Francois’ langur would decrease by 83.46%, the medium suitable area would decrease by 54.56% and the low suitable area would decrease by 47.39%. A similar pattern was also confirmed for 2081-2100, where the highly, moderately and poorly suitable areas for Francois’ langur would decrease by 76.85%, 61.73% and 51.62% respectively (Figure 5).