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Arboreal component, phytosociology structure and environmental relations in a remnant of cerradão, Curvelo - MG

By Thiago José Ornelas Otoni, Israel Marinho Pereira, Márcio Leles Romarco de Oliveira, Evandro Luiz Mendonça Machado, Múcio Magno Farnezi and Sílvia da Luz Lima Mota

Abstract

This work aimed to verify the existence of variations in composition and distribution of tree species due to soil characteristics in a fragment of dystrophic savanna in Curvelo-MG. On description in the compartment of the phanerophytes of this plant community, were installed ten permanent plots with 1.000 m2 (20 x 50 m) with fixed distances of 100 m between each plot. All alive individuals that had diameter at soil height (DSH - diameter to 0.3 m from ground level) > 5.0 cm were sampled. The Individuals with multiple boles were sampled when the value of square root of the sum-square of DSH had been greater than criterion of the inventory. Were collected Soil samples at two depths (0-20 e 20-40 cm) and was measured the distances of plots of a watercourse. To study the community were generated ordination diagrams of plots, species and environmental variables by means of a canonical correspondence analysis (CCA). The richness sampled was 92 species, 36 families and 74 genera, Erythroxylum, Byrsonima, Myrcia and Qualea. Jackknife estimators (first and second order) designed a wealth of 106.4 and 107.8 species. The species Magonia pubescens, Terminalia argentea, Annona crassiflora, Eugenia dysenterica e Xylopia aromatica were distribuited underneath the environmental gradient

Topics: Environmental variation, cerrado, arboreal community, richness, diversity, Forestry, SD1-669.5, Agriculture, S, DOAJ:Forestry, DOAJ:Agriculture and Food Sciences
Publisher: Universidade Federal de Lavras
Year: 2013
DOI identifier: 10.1590/S0104-77602013000200004
OAI identifier: oai:doaj.org/article:dc54507b3adc4091a626aa55e695c7e4
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