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Revista de Biología Tropical
versão On-line ISSN 0034-7744versão impressa ISSN 0034-7744
Resumo
SILVA-MAGALHAES, Lana-Cynthia; ZILLER, Silvia-Renate e SILVA-FORSBERG, Maria-Clara. Occurrence of non-native species and their potential impact on plant communities in protected areas in the Brazilian Amazon region. Rev. biol. trop [online]. 2020, vol.68, n.4, pp.1039-1048. ISSN 0034-7744. http://dx.doi.org/10.15517/rbt.v68i4.40429.
Introduction:
There is a large information gap on the occurrence of non-native species and their impacts on native biodiversity in the Amazon region in Brazil.
Objective:
The objective of this study was to characterize the floristic composition of a protected area in Manaus, Amazonas, and assess the potential impact of non-native invasive species.
Methods:
A floristic survey was carried out in 30 plots measuring 20 x 20 m with 1 x 1 m subplots. The estimated parameters were density, frequency, dominance, Importance Value Index (IVI), and Environmental Impact of Non-Native Species (IIAE).
Results:
In total, 8 out of 264 species registered in the tree-shrub layer were not native. A total of 61 species were identified in the herbaceous layer, five of which were non-native. The impact is estimated based on the highest abundance of species of non-native species.
Conclusions:
The presence of non-native species in the study area is an indication of a potential impact on biodiversity and ecosystem functions.
Palavras-chave : biological invasions; invasive species; abundance; index of environmental impact of non-native species; phytosociology.
