Artículos de revistas
Floristics of a seasonal semideciduous forest from a forest-savanna ecotone in Bauru Municipality, São Paulo state, Brazil
Florística de uma floresta estacional semidecidual, localizada em ecótono savânico-florestal, no Município de Bauru, SP, Brasil
Fecha
2008-01-01Registro en:
Acta Botanica Brasilica, v. 22, n. 4, p. 1085-1094, 2008.
1677-941X
0102-3306
10.1590/s0102-33062008000400019
2-s2.0-61349198731
Autor
Universidade Federal do Mato Grosso
Universidade Estadual Paulista (UNESP)
Institución
Resumen
Scarce floristic information for Bauru Municipality and the formulation of hypotheses on occupation mechanisms of forest communities by savanna species represent the main questions that motivated this study. The research was carried out in two seasonalsemideciduous-forest fragments (5 ha and 7 ha) maintained by Jardim Botânico de Bauru - JBMB (Bauru Botanic Garden), which includes forested savanna as well. The plant material was collected during random walks and in plots installed for a phytosociological study. We found 264 arboreal-shrubby species belonging to 58 families. Of these, 126 species were collected exclusively in the forest community, while 66 species were collected in both plant communities. The families Rubiaceae (25 species) and Myrtaceae (21 species) had the highest number of species. A floristic similarity analysis was performed, based on Jaccard's index (SJ), between the JBMB forest and 11 other forest remnants, some of which showed savanna floristic influence. The floristic richness of the JBMB forest fragments increased due to occupation by savanna species which came from the adjoining forested savanna. Previous fires plus the occurrence of distinct microenvironments were possibly the factors that facilitated the invasion by savanna species.