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Maps of centre–periphery approaches explored in Bulnesia sarmientoi. (A) Geographical approach. (B) Ecological approach based on ecological niche modelling analysis. (C) Ecological approach based on Mahalanobis and Euclidean distances to the climatic centroid. (D) Historical approach. Bulnesia sarmientoi distribution was delimited by Camps et al. (2018). Population codes are given in Supplementary data Table S1.
