Different Species Proportions Influence Silvicultural Heterogeneity of Trees in a Restoration of a Ombrophilous Dense Forest in Lowlands

Abstract

In order to generate strategies for the use of native species for ecological restoration, this paper presents the effects resulting from planting with facilitating tree species, in different proportions, after 13 years of forest restoration, in an area previously used for cattle buffaloes. The implantation was carried out in the Ombrophilous Dense Forest in the Lowlands, in the Atlantic Rainforest biome of the coastal plain of the state of Paraná and consisted of the plantation of 10 native species, distributed in two treatments: equal (A) and unequal (B) proportions of trees per species. After conducting a forest census, it was identified that the silvicultural expression of the facilitating tree species in the treatments differed significantly, and proportion A contributed to a scenario with greater silvicultural heterogeneity in the areas, which may be beneficial to the evolution of the ecological dynamics of the forest restoration process. In addition, the monitoring of Alchornea glandulosa, Inga edulis, and Myrsine coriacea expressed better development in the area and high resilience to the environmental adversities arising from the cattle ranching activity previously carried out, especially in relation to invasive grasses; therefore, they are recommended for use in the forest restoration of associated ecosystems.