Analyzes the impact of modifications in the socionatural environment of the Yekuana community of Asenona, a village in a terra firme zone of Amazonia. Reactions of the Yekuana to the modifications in explaining the formation and continued existence of a large village in the zone; Ethnographic background; Case study of the Asenona community; Role of the Union of the Makiritare of the Upper Ventuari.