Amazonian forests are a vast storehouse of biodiversity and function as carbon sinks from biomass that accumulates in various tree species. In these forests, the taxa with the greatest contribution of biomass cannot be precisely defined, and the representative distribution of Myristicaceae in the Peruvian Amazon was the starting point for designing the present study, which aimed to quantify the biomass contribution of this family. For this, I analyzed the databases that corresponded to 38 sample units that were previously collected and that were provided by the TeamNetwork and RAINFOR organizations. The analysis consisted in the estimation of biomass using pre-established allometric equations, Kruskal-Wallis sample comparisons, interpolation-analysis maps, and nonparametric multidimensional scaling (NMDS). The results showed that Myristicaceae is the fourth most important biomass contributor with 376.97Mg/ha (9.92Mg/ha in average), mainly due to its abundance. Additionally, the family shows a noticeable habitat preference for certain soil conditions in the physiographic units, such is the case of <span name="style_italic">Virola pavonis</span> in “varillales”, within “floodplain”, or <span name="style_italic">Iryanthera tessmannii</span> and <span name="style_italic">Virola loretensis</span> in sewage flooded areas or “igapó” specifically, and the preference of <span name="style_italic">Virola elongata</span> and <span name="style_italic">Virola surinamensis</span> for white water flooded areas or “várzea” edaphic conditions of the physiographic units taken in the study. for white water flooded areas or “várzea” edaphic conditions of the physiographic units taken in the study.

biomasa aérea; Amazonía peruana; Myristicaceae; preferencias; unidades fisiográficas