Florística e fitossociologia das espécies lenhosas no cerrado da fazenda Canchim (São Carlos, SP)
Abstract
The situation of the remaining cerrado areas in Brazil is worrisome, and more
studies are necessary to establish effective conservation strategies. We studied several aspects of the Woody
species in two campo cerrado areas in order to assess the conditions of the vegetation. We placed five
permanent 10 x 10 m plots in each area, in which we sampled the woody species in both the upper and lower
strata and in the dry and wet seasons. We analyzed floristics, structure, β diversity, regeneration, seasonality
and phenology. We did not find significant differences between the two areas in any of the descriptors, and
therefore concluded that the β diversity was low. The upper stratum had a higher diversity and evenness than
the lower, and was also more stable than the lower in relation to height structure throughout the year. We
found no correlation between aggregation patterns and strata, area or season, and most species showed an
aggregated pattern of distribution. The logarithmic series model was the better fit for both areas and layers,
which predict a large proportion of low-density species. This has implications to the conservation strategies,
because these species require large areas to maintain local populations without the risk of extinction. The
flowering patterns were different between the strata, and a niche separation could be occurring. None of the
species had regeneration problems. We considered that the area assure the reposition of the adult individuals
of woody species.