dos Santos A. M., Mitja Danielle, Miranda I. D., Loisel P., Delaître Eric, Demagistri Laurent. (2022). What is the influence of anthropogenic impact on the population structure of Attalea speciosa Mart. ex Spreng. in the Brazilian Amazonian region ?. Acta Botanica Brasilica, 36, p. 1-14. ISSN 0102-3306.
Titre du document
What is the influence of anthropogenic impact on the population structure of Attalea speciosa Mart. ex Spreng. in the Brazilian Amazonian region ?
dos Santos A. M., Mitja Danielle, Miranda I. D., Loisel P., Delaître Eric, Demagistri Laurent
Source
Acta Botanica Brasilica, 2022,
36, p. 1-14 ISSN 0102-3306
Attalea speciosa (babassu) is a native palm of the primary forest from Amazonian and Cerrado biomes, and has multiple economic and cultural uses. However, this palm can become dominant in open areas, with a long-term persistence in the community. The objective of this study was to compare the population structure and morphology of babassu in three habitat types characterizing forest succession: primary forest, pasture, and babacual (babassu-dominated secondary forest). For this purpose, we monitored 6,333 individuals for three years at six life stages in 11 sites with 25 plots located in PA-Benfica, Itupiranga-Para, Brazil. The morphological parameters showed differences between secondary environments (pasture and babacual) and primary forests, suggesting that this species has a high capacity for phenotypic plasticity. The inverse J-shaped distribution was observed only in primary forests, with the density of all stages constant along the whole study, unlike pastures and babacual areas. While the density of seedlings is highest in primary forests, stage 4 and 5 juveniles and adults are most numerous in babacuals. Our results suggest that the higher dominance of A. speciosa in babacual areas can be associated with the resilience of this species to anthropogenic disturbances.
Plan de classement
Sciences du monde végétal [076]
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Etudes, transformation, conservation du milieu naturel [082]
