The objective of this study was to evaluate the floristics and structural differences between adult and regenerating components of a stretch of Mixed Ombrophyllous Forest at Parque Estadual de Campos do Jordão, within the scope of raising hypotheses on its successional trajectory. In order to sample the adult component (CBH > 15 cm), 50 permanent plots of 10 × 20 m were allotted while five sub-plots of 1 × 1 m of the regenerating component (h > 30 cm and CBH < 15 cm) were allotted in each plot. In the adult component, 1,770 individuals were sampled, distributed in 58 species, 38 genus and 26 families (H' = 3.08 and J = 0.73). In the regenerating component, 576 individuals, 55 species, 39 genus and 23 families (H' = 3.41 and J = 0.84) were sampled. We have concluded that procedures for conservation of the coniferous are needed.
Araucaria angustifolia; phytogeography; phytosociology; regeneration; understorey
