In order to carry out the floristic and phytosociological study of tree layer of said
fragment. Were allocated four plots of 20 x 125 m, where we analyzed the floristic
composition, individuals with DAP ? 10 cm. Within the plots studied, 306 individuals
were identified, classified into 39 species, 30 genera and 17 botanical families. The
families with the greatest species richness were Mimosaceae, Arecaceae,
Cecropiaceae and Melastomataceae. In number of individuals stood out the
Cecropiaceae families, Melastomataceae, Malpighiaceae, Annonaceae and
Lauraceae. The genres that had higher species richness were: Inga, Porouma,
Miconia, Bellucia, Byrsonima and Ocotea. The genera with the largest number of
individuals were Pourouma, Miconia, Byrsonima, Ocotea and Inga. Species that
added the largest number of individuals were Pourouma cecropiifolia Mart, Miconia
sp.1, Byrsonima sp.1, Guatteria sp., Inga alba (Sw.) Willd. and Euterpe precatoria M.
The index of Shannon-Wiener (H') was found to be 3,11 and the evenness (J) 0,84.
The species with the highest Importance Value Index (IVI) were: Pourouma
cecropiifolia Mart, Byrsonima sp1, Miconia sp1, Hevea guianensis Aubl, and
Guatteria sp. The total density of the sampled area was 306 ind.ha¹ and the basal
area was 21, 26 m². ha¹. The floristic composition of the study area proved to be
consistent with the results of other studies conducted in secondary forests in the
Amazon, which are present in most species of the group of pioneers.
Real Time Impact Factor:
Author Name: Erica Karolina Barros de Oliveira , Augusto César Gomes Nagy , Quétila Souza Barros , Bianca Cerqueira Martins, Leonidas Soares Murta Júnior
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Keywords: Population growth; Deforestation; Diversity; Secondary forest;