Dynamics of natural regeneration after disturbance in a remnant of Mixed Ombrophilous Forest in southern Brazil

  • Alyne Regina Ruggiero Departamento de Engenharia Florestal. Universidade Regional de Blumenau (FURB), Rua São Paulo, n° 3250, CEP: 89030-080, Blumenau, SC, Brazil.
  • Lauri Amândio Schorn Departamento de Engenharia Florestal. Universidade Regional de Blumenau (FURB), Rua São Paulo, n° 3250, CEP: 89030-080, Blumenau, SC, Brazil.
  • Kristiana Fiorentin dos Santos Departamento de Engenharia Florestal. Universidade Regional de Blumenau (FURB), Rua São Paulo, n° 3250, CEP: 89030-080, Blumenau, SC, Brazil.
  • Tatiele Anete Bergamo Fenilli Departamento de Engenharia Florestal. Universidade Regional de Blumenau (FURB), Rua São Paulo, n° 3250, CEP: 89030-080, Blumenau, SC, Brazil.
Keywords: horizontal structure, ingress, mortality, succession stages.

Abstract

This study evaluated changes in the structure for remnant Mixed Ombrophilous Forest recovering from logging, which ceased over 40 years ago. Regarding the dynamics of the floristic composition of natural regeneration, 18 species remained (23.38% of the total) and 27 new species entered (35.06% of the total). The greatest increases were observed for Allophylus edulis, Myrsine umbellata, and Miconia cinerascens. When analyzing the dynamics of regeneration in ecological groups, it was observed that pioneer species had a similar value in both surveys (29.4% and 29.6%); secondary species decreased from 56.6% to 52.8%, and late-successional species increased from 0.2% to 6.0%. Therefore, the forest fragment studied is in a healing phase after disturbance, characterized by the increased regeneration of pioneer species as a result of sufficient light entering the interior of the forest.


Published
17/05/2021
Section
Papers