Fig. 7

Material and non-material relationships between the Nahua people and snakes (green). The community knowledge that sustains these relationships has been created by several factors: biological (including morphological and ethological) and ecological knowledge (green), intra and extra-community knowledge (purple), and intra and extra-community communication (brown). Material relationships are shown in the different forms of management (pink) and use (blue), while non-material relationships are shown in magical–religious aspects (orange) and perceptions (yellow). Social group that has transmitted most of this information (grey). The lines show the relationships that exist between the different aspects