Resumo

NERI, Andreza Viana et al. Regeneration of wood natives species under Eucalyptus stand of Cerrado area in the Floresta Nacional of Paraopeba, Minas Gerais, Brazil. Acta Bot. Bras. [online]. 2005, vol.19, n.2, pp. 369-376. ISSN 0102-3306.  http://dx.doi.org/10.1590/S0102-33062005000200020.

The regeneration of understory in homogeneous stands is closely dependent of neighbour forests. Others factures also have influency such as the species dispersion ecology, the border effects and clearings. Therefore, the objective of this work were to study the floristic and structure of native woody plant species growing under stands of Eucalyptus in the Cerrado area in the Flona (Floresta Nacional - National Forest) of Paraopeba, Minas Gerais, Brazil, and to determine the variations in richness, density and the zoochorous and anemochorous individual dispersions from the borders into the stand. To carry out this study five plots with 5×40 m, subdivided into subplots of 5×10 m were set up. A total of 47 species were found and among these two stood out mainly because of their high density: Magonia pubescens A. St.-Hil and Miconia albicans (Sw.) Triana. From the species sampled 53% have a zoochorous dispersion and 43% have an anemochorous dispersion. The decrease in richness, density and anemochorous dispersion species from the border into the stand were also observed. However the percentage of zoochorous dispersion individuals increase inside the stand. The large richness and density on the borders is due the propagule dispersion difficulty inside the fragment. The diversity index (H'=2.49) found in this study was close to the values observed in the regeneration studies under Eucalyptus in the other Cerrado areas.

Palavras-chave : dispersion; conservation unit; phytosociology; floristic composition; regeneration.