Publicações

The objective of this study was to obtain homogeneous groups of species and information on
their density, dominance and volume, in terms of ecological group and diameter structure of an area of Submontane
Semideciduous forest (Mata do Mumbaça) in Dionísio, MG. This work was conducted with data of the diameter
distribution per species from floristic and phytosociological (Mata do Mumbaça) survey of 120 plots with 10
x 10 m each one. The 120 plots were contiguous and corresponding to a total sample area of 12,000 m² distributed
over the topographic units (Low Ramp, Lower Slope, Upper Slope and Hill Top). The topographic units Low
Ramp, Lower Slope and Upper Slope were in the middle stage of succession as they presented incipient stratification
into two strata (canopy and understory) i.e. canopy ranging from 5 to 12 m high. However, the stratum Hill
Top was classified as intermediate/advanced succession because it had a total height equal to or greater than
12 m. The distribution of individual trees of the four strata on diameter classes showed a typical J-inverted
pattern that is, high concentration of individuals in smaller diameter classes and a sharp reduction towards
the larger classes. In relation to absolute dominance and total volume of species, the ecological group that
stood out in the four strata (Low Ramp, Lower Slope, Upper Slope and Hill Top) was the initial secondary,
which were in the intermediate stage of secondary, rapidly developing into the mature phase.