Composition and similarity of flora associated with anthropogenic sites in the city of João Pessoa - Paraíba

This study presents the floristic composition and similarity of synanthropic vascular plant species in an anthropogenic peri-urban area in the city of João Pessoa, in the state of Paraíba, and how it is related to other synanthropic floras. A total of 98 species in 75 genera and 30 families were found. Among the species, 41.84% are cosmopolitan, 29.6% pantropical, 13.3% occur only in the Southern Cone of America, 8.2% are Neotropical, 5.1% gondwanic and 2% occurs across America. Asteraceae and Poaceae were the families with the biggest number of species. The results were compared with other related floristic surveys using Sörensenâ€(tm)s similarity coefficient, and it was observed that not it is only the geographical proximity of the two locations that reflects a higher floristic similarity between areas but also the extent of the taxa and the presence of a similar microhabitat. The study focuses on an area located in the Brazilâ€(tm)s Midwest region.

floristics; synanthropic plants; northeast; Brazil