Levantamento florístico nas proximidades da cidade universitária da Universidade do Estado do Amazonas, em Iranduba - Amazonas

Abstract

The Amazon rainforest is considered the richest terrestrial ecosystem in biological diversity in the world, where ecological processes are dynamic, complex and fragile. The Brazilian Amazon covers an area of approximately 370,000,000 ha, that is, it has a geographic scope of continental dimension, being approximately 337,400,000 ha is of forest area and 32,600,000 composed of non-forest area. Where the diversity of tropical rainforests is the largest on the planet. In each hectare of forest there are approximately 300 species of trees with more than 10 cm of diameter at the height of the chest (DAP). The floristic survey aims to identify species that occur in a given geographic area and represent an important step in understanding an ecosystem by providing basic information to subsequent biological studies. The area chosen for study is inserted in the Nucleus Zone of the future University City of the State University of Amazonas, Iranduba Municipality, buffer zone of the environmental protected area (APA) Meeting of the waters. The samples were taken in an area of 100m2, which contains five parallel transects of 100m linear length. The method used in the field work was to walk through the transect, marking the trees up to 5m to the right or left, as a reference to the DAP or more than 5 cm. Leguminosae has been described in 76 individuals, followed by the Moraceae family with 38 individuals, distributed in 36 families, 22 genera and 8 species with 14 individuals in dormancy. Regarding the relative frequency, 11 families were present in the 5 transects, 4 families appeared in 4 transects, 6 families appeared in 3 transects, 8 families in 2 transects and 7 families in only 1 transect.