STRUCTURE OF FOREST FRAGMENTS OF THE CAMPUS FEDERAL UNIVERSITY AMAPÁ-BRAZIL

• Autor(a) principal: Estigarribia, Fabiana
• Data de Publicação: 2017
• Outros Autores: Aparício, Wegliane Campelo, Galvão, Fernanda Gomes, Pereira, Luma Carolina Borges, Gama, Rocilda Cirino
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Biota Amazônia
• Texto Completo: https://periodicos.unifap.br/index.php/biota/article/view/1028

To better understand the dynamics of the forest in relation to its structure, it is important to conduct studies on communities that compose them. The aim of the work was the phytosociological analysis of fragments of forest on the campus of the Federal University of Amapá. For the study, 40 permanent plots systematically 250m² were installed. All trees with (CAP) ≥ 10 cm were sampled. The botanical material was identified in the Herbarium of the Federal University of Amapá, following the classification system APG III. The horizontal parameters analyzed were:  Density, Dominance, Frequency, Importance Value, Diversity and Distribution diameter and Space. The specie with the highest importance value was Enterolobium schomburgkii (28.76 %), but the most common in the area was the Protium guacayanum species who appeared in almost all plots of the study area. The largest of the CAP was found of the species Byrsonima aerugo Sagot, the family Malpighiaceae, measuring 220 cm. In the floristic composition survey, 2,431 individuals were sampled and identified about 90 species belonging to 40 families. The family that had the greatest number of individuals was the Fabaceae (496). Regarding the distribution diametric the class 7 and 9 showed absence of individuals in relation to the most sought-after species of commercial value. The spatial distribution of the species was aggregate. Slightly more than 50 % of young individuals compete for abiotic factors, given that the vegetation is in the process of formation of the forest fragments than are restructuring.Keyword: Phytosociology; abiotic; species; classes.