Variação temporal na composição e estrutura da vegetação em formação de Vereda
DOI:
10.46551/ruc.v26n2a15Keywords:
Dinâmica de vegetação, Floresta higrófila, Mortalidade, Recrutamento, DinâmicaAbstract
Objective: To evaluate temporal changes in the composition and structure of the plant community in the different habitats of Almescla vereda (Bonito de Minas, MG) over a five-year period. Methodology: A resampling of the vegetation was carried out in the vereda after five years, using plots of different sizes (different strata) in three zones (hygrophilous forest or open area that included wet and dry environments), including shrub-arboreal individuals. To evaluate structural changes were calculated the basal area, importance value, increment, mortality, recruitment, loss and gain rates, and changes in composition (beta diversity). Results: The results reveal a slight variation in species richness between the habitats of the Almescla vereda, with the hygrophilous forest exhibiting a greater number of shrub-tree species in both sampling periods. There was an increase in the total number of species in 2022 compared to 2017. Tapirira guianensis consistently had the highest importance value, followed by Mauritia flexuosa and Xylopia aromatica. Beta diversity was high, mainly due to species turnover. Vegetation dynamics showed rates of recruitment and gain in basal area higher than rates of mortality and basal loss, indicating continuous species replacement. Some species exhibited specific mortality and recruitment rates throughout the sampled years. Conclusion: These results demonstrate how species replacement and the decrease in the density of tree species in the vereda varied over time, indicating increasing landscape modification.
Keywords: Vegetation dynamics, Hygrophilous forest, Mortality, Recruitment, Temporal
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