Floristica, fitossociologia e produção de folhedo em matas ciliares da região oeste do Estado de São Paulo

AUTOR(ES)

Giselda Durigan

DATA DE PUBLICAÇÃO

1994

RESUMO

Four fragments of riparian forests have been studied, each with different soil types, in the western region of São Paulo State, Brazil. Three of these are fragments of formerly continuous semideciduous forest. The fourth fragment is in "cerrado" domain. Floristic composition, phytosociology and litter productionwere studied. Botanical collectionsbegan in 1989 and continued for five years. Arboreous and non arboreous wood species, ocurring inside and outside the sample area, were col1ected. For the phytosociological study, the quadrat method was employed.Thirty plots of 10x10m were establishedin each fragment, within a strip from 0 to 30m from the stream margins. AlI trees with DBH greater than or equal to 5.0cm were measured, for cover and importance value calculations. Profile-diagrams,distanceof the trees to the stream margins and crown diameters were used as aditional instruments in phytosociological analysis. Litter production was traps (50x50cm), distributed in located at sites with different structures. 242 wood species were collected, including trees, saplings, shrubs, palms and lianas. Only nine of those species were present in alI four fragments. Floristic similarity between forests was low, probably as a consequence of edaphic differences and the nature and degree of ecosystem disturbance in each fragmento A side from distinct floristic differences, the riparian forest in the "cerrado" region was structurally very different from the others. It had fewer canopy layers and high density of smaller trees. evaluated for 12 months, using 50 five blocks of 10. These were soil types, moisture and forest Of the 10 most important species in each fragment, only 4 were common to 2 fragments. Species present in more than one forest, took very different positions in the community hierarchy. Litter production was greater in forest regions than in the "cerrado" domain. It was also different among the fragments in forest regions. Within forest sites, litter production on dry soil was greater than in areas with wet soil.

ASSUNTO(S)

comunidades vegetais - são paulo (estado) ecologia vegetal

Documentos Relacionados

• Avifauna de matas ciliares do Rio Batalha e adjacências, região centro-oeste do estado de São Paulo, Brasil
• Matas ciliares da caatinga: florística, processo de germinação e sua importância na restauração de áreas degradadas
• Florística, fitossociologia e diversidade da vegetação arbórea nas matas de galeria do Parque Nacional de Sete Cidades (PNSC), Piauí, Brasil
• Participação em políticas públicas para conservação de matas ciliares no Estado de São Paulo
• Flora pteridofitica das matas ciliares da bacia do Rio Jacare-Pepira,Estado de São Paulo, Brasil