Table 3 Recurrence time for the leaf-shedding event for each group of trees. In Parkia velutina, recurrence time for the leaf-shedding event (from the flushing time to a new leaf-shedding event) lasted for 8–14 months. A, B, C and D are the different tree groups (see also Fig. 10); All ind. All individuals; for each case, the number of trees is given, with the percentage of trees in parentheses (%)