Avaliação temporal da regeneração natural em uma floresta estacional semidecídua secundária, em Pirenópolis
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Data
2011
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Resumo
The natural regeneration in forest environments is dynamic, variable in space and time and
it is in the development cycle of forests. In seasonal tropical forests, due to seasonal climatic changes, natural
regeneration depends mainly on availability of soil moisture, which affects patterns of seed production and
germination, survival and development of seedling as well. The objective of this study was to analyze the
dynamics of natural regeneration in a seasonal semideciduous secondary forest in Pirenópolis, Goiás, Brazil,
by analyzing the changes in floristic composition of seedlings and small trees over time and relating them
to environmental factors of plots in the study area by using Canonical Correspondence Analysis (CCA). The
results indicated that seedlings were more dynamic than small trees mainly because of climate. This occurred
because of the greater susceptibility of the seedling to soil water stress and the increase of solar radiation
and temperature in the dry season. It was found a high floristic similarity (± 50%) among population of
natural regeneration and the tree community, indicating an advanced stage of natural regeneration of the
forest, with Diversity Index higher than 3.0 nats.indv-1. Canonical Correspondence Analysis grouped the
species according to the environmental gradient of moisture and shade versus soil cover, placing near to
each other, species of humid environments versus species of typical cerrado dry environments.
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Sucessão florestal, Fatores ambientais, Cerrado, Cerrado, Environmental factors, Forest succession
Citação
VENTUROLI, Fábio; FELFILI, Jeanine Maria; FAGG, Christopher William. Avaliação temporal da regeneração natural em uma floresta estacional semidecídua secundária, em Pirenópolis. Revista Árvore, v. 35, n. 3, p. 473-483, 2011.