Forest litterfall production (mean Mg DM ha⁻¹y⁻¹ and its standard error) in forests of: T. integrifolia; S. humboldtiana; A. inundata; and N. angustifolia, located in the P.N.P.D. (period: 1998–2002). The total and fraction (leaf, branches, and flowers+fruits) production is indicated for the study period.