Flora e estrutura da vegetao arbustivo-arbrea de uma rea de caatinga do Serid, RN, Brasil

By Isaac Lucena de Amorim, E. Sampaio, Elcida de Lima Araújo. 2005

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ABSTRACT – (Flora and structure of the tree and shrub vegetation of the caatinga at Serido, Rio Grande do Norte State, Brazil). Aphytosociological survey was conducted at one area belonging to the Serido Ecological Station to test the hypothesis that the vegetationat the Serido region is open and low. All woody plants with stem perimeter at breast height ≥3 cm were counted, within 100 plots,10×10€m, and each one had its height, stem perimeter, and crown projection diameters measured, and its aboveground biomass estimated.Fifteen species were found, belonging to 15 genera and 10 families, with a Shannon diversity index of 1,94 . These values are below thoseof most of caatinga places elsewhere. Mimosoideae was the family with most species (three). All structural variables, except density,(3,250 plant ha -1 , basal area 6.1 m 2 ha , maximum height 9.5 m, maximum stem diameter 37 cm, total crown area 8,723 m 2 ha -1 , biomass25 mg ha -1 ) had lower values than caatinga elsewhere. Aspidosperma pyrifolium

Subfields: Plant Science, Soil Science

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