Natural regeneration of Miconia albicans (SW.), Triana and Dalbergia miscolobium Benth in the interior of stands of Pinus caribaea Morelet: A contribution

Abstract

The present study was carried out at the Floresta do Lobo Farm, in the municipality of Uberlândia, MG. This production farm has been working for decades with the forestry of Pinus caribaea Morelet and Eucalyptus spp., as well as agricultural crops such as corn, sorghum and pastures for livestock. For the present study, 3 areas were used in the interior of Pinus caribaea Morelet plantations, where 10 plots of 100m² and 10 plots of 4m² were randomly distributed along transects equidistant 100m from each other. In the 100 m² plots, individuals between 1 m in height and 5 cm in diameter (pre-reproductive) were sampled, and in the 4m² samples, individuals between 15 cm and 1 m in height (seedlings and juveniles) in each stand. For M. albicans, the density of individuals ranged from 0 to 30 per plot and for D. miscolobium between 0 and 4 individuals. Significant differences in plant density were observed in the three areas using ANOVA for the two species studied. Regarding the frequency in the plots, D. miscolobium ranged from 50% to 90% of the sampled plots, while M. albicans ranged from 80% to 90%. The higher environmental plasticity in M. albicans together with apomixis may be determining elements in the remarkable regeneration potential of the species.