Fig. 3
From: The ecological drivers of variation in global language diversity
Global distribution of residuals in language diversity. Residuals after accounting for the climatic and landscape effects on language diversity are shown for 200 × 200 km grid cells of an equal-area grid. Aggregations of grid cells with residuals ≥ 1.96 (red) are circled. These indicate four regions of higher than expected language diversity, compared with regions of similar climate and landscape (New Guinea, Eastern Himalaya, West Africa, and Mesoamerica). Areas of lower than expected language diversity with residuals ≤ −1.96 (blue) are distributed in South America, mostly in the Amazon basin. The figure only shows grid cells for which we have relevant data
