Fig. 2.

Phosphorus stocks in live and dead biomass as a function of number of cultivation cycles. Stocks in live wood, leaves, and roots (A) and in forest floor litter (<1.8 cm in diameter) (B) were determined for 28 secondary forests (2–25 years old) and 8 mature forests. Stocks in fine woody debris (1.8–10 cm in diameter) (C) and in coarse woody debris (>10 cm in diameter) (D) were determined for 17 secondary forests (5–16 years old) and 6 mature forests. Horizontal lines indicate marginal means for secondary forest and geometric mean for mature forest (zero cycles). None of the sites had received chemical inputs.