Table 1.
Threat layers and respective data sources.
Table 2.
Expert survey results on SDMs based on the consensus approach.
Table 3.
Five-point rating scale to define the potential threat magnitude.
Table 4.
Expert survey results on threat sensitivity based on the consensus approach.
Fig 1.
Threat magnitude levels of (A) ‘Overexploitation’, (B) ‘Overgrazing’, (C) ‘Fire’, (D) ‘Climate change’, (E) ‘Cotton production’, (F) ‘Mining’ and (G) ‘Combined threat’. The criteria to define the threat levels are presented in Table 5.
Fig 2.
Threat magnitude levels of (A) ‘Overexploitation’, (B) ‘Overgrazing’, (C) ‘Fire’, (D) ‘Climate change’, (E) ‘Cotton production’, (F) ‘Mining’ and (G) ‘Combined threat’. The criteria to define the threat levels are presented in Table 5.
Table 5.
Threat magnitude rating.
Fig 3.
Combined threat magnitude levels ‘Very high’ and ‘High’ for all species across all threats and protected areas.
The protected area layer was derived from the World Database on Protected Areas [58]. The criteria to define the threat levels are presented in Table 5.
Fig 4.
Climate change threat magnitude levels ‘Very high’ and ‘High’ combined for all species.
The criteria to define the threat levels are presented in Table 5.
Table 6.
Importance of individual threat layers by species.
Table 7.
Combined threat layers by species.
Fig 5.
Species richness map of 16 important food tree species and eco-climatic zones.
The three eco-climatic zones (Sahelian zone: < 600mm/a, Sudano-Sahelian zone: 600–900 mm/a and Sudanian zone: > 900 mm/a) are defined by the annual rainfall [4] and are represented in this map by the bioclimatic variable 12 from the WorldClim 1.4 dataset [41].