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Floristic and Phytosociological Characterization of a Forest in Its Second Logging Cycle

By Renato Campos de Oliveira, Dirceu Lúcio Carneiro de Miranda, Juliano de Paulo dos Santos et al. · June 30, 2026

This study aimed to characterize the floristic composition and phytosociological structure of a forest under a second logging cycle located in the northern region of the state of Mato Grosso, Brazil. Data were collected from 77 sample plots of 200 m² each, totaling 1.54 ha, in which diameter at breast height (DBH), total tree height, and botanical identification of woody individuals were recorded. The analysis included classical phytosociological parameters, such as density, frequency, dominance, Importance Value Index (IVI), Relative Sociological Position (RSP), and diversity indices (Shannon–Wiener, Pielou's evenness, and Jentsch's mixture coefficient). A total of 943 individuals belonging to 66 species, 61 genera, and 31 families were recorded. The most representative families were Fabaceae, Burseraceae, Myrtaceae, Moraceae, and Lauraceae. The species with the highest ecological importance were Inga alba, Eugenia jambos, and Brosimum lactescens, which accounted for a substantial proportion of the community structure. The Shannon–Wiener diversity index (H' = 3.36) and Pielou's evenness index (J = 0.80) indicated high species diversity and a well-balanced distribution of individuals among species. The vertical structure showed a predominance of the middle stratum (64.37% of the individuals), a characteristic commonly associated with forests undergoing recovery. The results demonstrate that the forest maintains high biodiversity and considerable natural regeneration potential even after a second selective logging cycle, confirming its ecological resilience. It is concluded that sustainable forest management contributes to maintaining species diversity and structural stability.

Continue reading →DOI doi.org/10.55746/treed.2026.06.290