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Composicao e estrutura de clareiras em mata mesófica na Bacia de Sao Paulo, SP

by Costa, M.P. da; Mantovani, W; 2. Congresso Nacional sobre Essencias Nativas Conservacao da Biodiversidade Sao Paulo (Brasil) 29 Mar - 3 Abr 1992.
Publisher: 1992Subject(s): CLAROS | ESTRUCTURA DEL BOSQUE | COMPOSICION BOTANICA | REGENERACION NATURAL | DENSIDAD DE LA POBLACION | BRASIL | BOTANICAL COMPOSITION | NATURAL REGENERATION | POPULATION DENSITY | BRAZIL | COMPOSITION BOTANIQUE | REGENERATION NATURELLE | DENSITE DE POPULATION | BRESIL In: Revista do Instituto Florestal (Brasil) v. 4(pt.1) p. 178-183Summary: This study describes the composition and structure of 21 gaps occurring in semideciduous mesophyll forest in the Parque estadual das Fontes do Ipiranga Reserve, Sao Paulo, southeastern Brazil. The origin and size of species colonizing the gaps were determined and the number and height of trees and branches created 66 per cent of all gaps and the others origin was unknown. Most gaps (71 per cent) were small (20 to 40 m2). Seven species were founded exclusively in larger gaps (more than 100 m2), 48 were founded only in smaller gaps (less than 60 m2) and 14 occurred indifferently. The three commonest species in gaps were included between the most important species in a phytosociological study carried out in the area. This fact, and the great number (69) of species founded, suggest that gaps play an important role in the dynamics of the studied forest.
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This study describes the composition and structure of 21 gaps occurring in semideciduous mesophyll forest in the Parque estadual das Fontes do Ipiranga Reserve, Sao Paulo, southeastern Brazil. The origin and size of species colonizing the gaps were determined and the number and height of trees and branches created 66 per cent of all gaps and the others origin was unknown. Most gaps (71 per cent) were small (20 to 40 m2). Seven species were founded exclusively in larger gaps (more than 100 m2), 48 were founded only in smaller gaps (less than 60 m2) and 14 occurred indifferently. The three commonest species in gaps were included between the most important species in a phytosociological study carried out in the area. This fact, and the great number (69) of species founded, suggest that gaps play an important role in the dynamics of the studied forest.

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