Phenology of the Patauá palm (Oenocarpus bataua Martius) in the "terra-firme" ecossystem of the Adolpho Ducke Forest Reserve was studied for 16 years. Percentage average occurence of ten phenophases was calculated. Principal Component Analysis of ten phenological variables and six meteorological variables was done. Percentage average occurence of the phenophases presented low values (< 14%) occuring the whole year. Precipitation and insolation showed high discriminatory power in the formation of the first two principal components, as calculated by Principal Component Analysis, and together represented 89.6 % of the total variation. Correlations were positive between "falling fruits" and insolation (r=0.34), maximum temperature (r=0.31) and mean temperature (r=0.20), and negative with precipitation (r=-0,26) and relative humidity (r=-0.26).
Phenology; Swamp forest; Palm; Central Amazonia