Biomass and demographic dynamics of the Brazil nut family (Lecythidaceae) in a mature Central Amazon rain forest

In this study, we analyze the demographic rates and biomass dynamics of Lecythidaceae in a 100-ha permanent forest plot Central Amazon. We characterize habitats plot, effect habitat on tree density, species richness, dynamics, quantify significant associations. The experienced 13.2 % net loss individuals (n = 1023) but aboveground (AGB; Mg ha−1) did not differ between two censuses. Growth averaged 1.2 mm year−1 with high intraspecific variation differed significantly among height classes. Stem density richness decreased all six terra firme were lower both years flood disturbed habitat. Only areas AGB, along highest annual mortality, recruitment, growth across plot. lower-lying higher mortality than slopes plateaus, suggesting too much moisture is risk to drought There no overlapping associations sister species, or seven most abundant which suggests that association provides niche partitioning mechanism for closely related species. As intended its establishment, continues provide integral baseline data one ecologically dominant culturally families Amazon region.