Floristic and phytosociological aspects of the tree community in an urban Atlantic forest fragment (Juiz de Fora, State of Minas Gerais, Brazil).
2012; UNIVERSIDADE FEDERAL DE UBERLÂNDIA; Volume: 28; Issue: 5 Linguagem: Inglês
ISSN
1981-3163
AutoresCassiano Ribeiro da Fonseca, Fabrício Alvim Carvalho,
Tópico(s)Forest ecology and management
ResumoThis study aimed to evaluate the floristic composition and phytosociology of tree community of a small urban semideciduous forest fragment (2 ha) belonging to the Botanical Garden of the Federal University of Juiz de Fora, Juiz de Fora, MG, Brazil. Trees (DBH ≥ 5 cm) were sampled at 25 random plots of 20 x 20 m (1 ha). A total of 2054 trees belonging to 78 species were sampled. There was a strong predominance of species of frequent occurrence in the flora of Minas Gerais State, and species of early sucessional stages (pioneer and early secondary). Due to the strong ecological dominance, the Shannon index of species diversity (H’ = 2.82) was the lowest compared with other secondary forests in the region. The community also had a high density of the exotic species Syzygium jambos (the 4 in Importance Value), potentially invasive in neotropical forests. Although the forest fragment has a long natural regeneration (> 70 years of abandonment and development), the results show an immature tree community with low diversity, following the pattern usually attributed to urban forests worldwide.
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