出版社：Grupo de Pesquisa Metodologias em Ensino e Aprendizagem em Ciências
摘要：Restinga is an important Brazilian ecosystem that has been affected by environmental problems, such as biological invasions. Thus, we aim to carry out a survey of invasive or current alien species in Restinga in the Northeast of Brazil. The survey took place through walks where the species were recorded by photographs. Each species was classified as naturalized or invasive through in situ observations and specific literature. The species composition of the areas was compared using Jaccard Similarity (Sj) in three situations: complete list, only invasive and only naturalized. The Mantel test was performed to verify whether the size and distance between areas influence the similarity. 42 species were sampled, of which 33 were invasive and nine were naturalized. The Leucena leucocephala (Lam.) de Wit, Terminalia catappa L. and Cenchrus echinatus L. were the only ones occurring in all areas. The floristic similarity varied greatly between tested situations. Mantel test did not show significant values. Our findings are worrying, due to high number of species and high quantity of invasive species.
