Abstract
This study shows the phytosociology and floristics of a Dense Ombrophilous Forest fragment under forest management in Portel city, Pará State. Six conglomerates were sampled, divided into secondary and tertiary plots totaling 120 sample units of 0.4 hectares each, in which all trees with diameter at breast height (130 cm above ground; DBH) above 10 cm were measured. These individuals were botanically identified, and evenness and floristic similarity were calculated. There were 3,586 individuals distributed in 42 families, 121 genera, and 174 species. Families Fabaceae, Lecythidaceae, and Sapotaceae were the ones that obtained the highest IVI and the highest representativity of individuals. Species Eschweilera coriacea (DC.) S.A.Mori, Vouacapoua americana Aubl., and Tetragastris altissima (Aubl.) Swart were the ones with the highest IVI. Among the ten highest results, we highlight Syzygiopsis oppositifolia Ducke and Manilkara dardanoi Ducke, with great potential for timber production. The Shannon diversity index averaged 3.83 between the plots, and the Pielou evenness averaged 0.84, showing that the area presents high floristic diversity and great potential for forest management activities.
Highlights
Brazil is considered one of the most important countries when it comes to world biodiversity
Studying a Dense Ombrophilous Forest area in Roraima State, Condé and Tonini (2013) found higher species richness concentration in the botanical families Fabaceae, Lecythidaceae, and Sapotaceae, with 1,883, 609, and 434 individuals, respectively, similar to the results found in this study
The most abundant species were Eschweilera coriacea, Vouacapoua americana, Tetragastris altissima, Inga heterofila, Syzygiopsis oppositifolia, Eschweilera odora, Pouteria laurifolia, Chrysophyllum lucentifolium, and Sagotia brachysepala, which together accounted for 39.34% of the sampled individuals
Summary
Brazil is considered one of the most important countries when it comes to world biodiversity. The country comprises about one third of the world's tropical forests, which occupy an area of about 4.2 million km (DA SILVA et al, 2008). These different forest environments are formed by a rich and varied flora, which is most of the time unique to each environment. Dystrophic latosols predominate in these environments and it is possible to observe the presence of families of pantropical dispersion, present throughout the continent, such as Fabaceae, Sapotaceae, and Lecythidaceae The latter is considered typical, that is, with remarkable physiognomies in the places where it is presented (IBGE, 2012)
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
