Fig. 4
From: The ecological drivers of variation in global language diversity
Global distribution of the number of language families. Numbers of language families are shown for 200 × 200 km cells of an equal-area grid. Language family is defined by the World Language Mapping System taxonomy1. Language isolates are treated as distinct families. Number of language families within a grid cell is calculated as the number of language families that include at least one language distributed in the grid cell. The figure only shows grid cells for which we have relevant data
