ABSTRACT
Seasonal semideciduous forests present high biodiversity and are currently threatened by the process of fragmentation. This paper describes the phytosociological structure of woody species in a fragment of seasonal semideciduous forest in the municipality of Ipiaçu, MG, and classify the species by their dispersal syndromes and successional groups. Twenty five plots of 20x20 were allocated, and 837 individuals were sampled representing 50 species distributed in 25 families. Fabaceae was the most representative family with 15 species. Hymenaea courbaril was the species with highest VI (18%), followed by Piptadenia gonoacantha (10.7%) and Luehea grandiflora (10.6%). Of the listed species 58% are pioneers, 21% first secondary and 21% late secondary; of these, 58% are zoochoric, 33% anemochoric and 17% autochoric. The fragment has an acid soil with a high content of Fe and Mn, base saturation below 50%. The low species richness (50 spp.) and small basal area (15,15 m2.ha-1), the high density of pioneers and opportunistic species and the presence of several gaps formed by human activity over time, mainly selective cutting of valuable timber trees are all strong signs of the disturbance within the study area.
Key words:
dispersal syndromes; forest remnant; phytosociology; Tucumã farm