Current and past overlaps in species distribution ranges between
the Tamus lineages
ENM analysis was performed for each of the four lineages in the Tamus
clade (Figure 3) to explore whether differences exist in (former)
distribution between the four clades identified within the Tamus clade
of Dioscorea . Predicted distribution models were estimated using
available occurrence data points (DC1: 27, DC2: 26, DC3: 218, D.
orientalis : 17) and selected bioclimatic variables (DC1: bio16, bio9,
bio15, bio3 and bio8; DC2: bio16, bio14, bio6, bio15, bio3, bio8; DC3:
bio4, bio8, bio16, bio15 and bio9; D. orientalis : bio16, bio14,
bio6, bio15, bio3 and bio8; in order of importance); and showed high AUC
values (DC1: 0.9989 ± 0.0003, DC2: 0.980 ± 0.005, DC3: 0.937 ± 0.002,D. orientalis : 0.9994 ± 0.0001) and a 10% threshold was applied
(DC1: 0.24, DC2: 0.29, DC3: 0.20, D. orientalis : 0.50
probability).