Abstract:It is well-known that diverse groups of vegetation with an analogous but not identical floristic composition show an ecological similarity which leads to a determined type of vegetation. Starting from this fact it becomes evident that the scope of phytosociological work is the establishing of the significance of the species within the association and the discovery of the rules which govern associations. The floristic surveys made in the field have to be analysed statistically so as to … Show more
“…O número de indivíduos no estrato inferior é superior a todos os outros estratos, com 82,2% dos 1393 indivíduos amostrados pertencendo ao E1, 15,5% ao E2 e apenas 2,3% ao E3 (figura 1). De acordo com Veloso (1947), à proporção que a associação evolui para o equilíbrio permanente, o número de indivíduos dos estratos inferiores diminui, em relação aos dos estratos superiores, que aumenta. Estes resultados demonstram que a floresta está regenerando-se e não está, portanto, em clímax.…”
-(Composition, structure and ecological aspects of the riparian forest of the Araguari River within Triângulo Mineiro region). The study aimed to characterize the tree community of a riparian forest, one of the remnants on the Araguari River, at Uberlândia, Triângulo Mineiro, Minas Gerais State. The study was investigated by phytosociological survey of 110 plots of 10 m × 10 m (1,1 ha). All trees with CAP ≥ 15 cm were registered. There were sampled 1,393 trees distributed in 89 species and 36 families. Hirtella gracilipes (Hook.f.) Prance was the most abundant specie, with the highest frequency, density and VI. The Shannon index was H' = 3,65 nats.ind -1 . The analysis of the vertical structure indicated the occurrence of three strata in the riparian forest: the canopy, the understory and an intermediate stratum. The floristic comparisons indicated that the riparian forest of Araguari River is more similar to the Triângulo Mineiro forests and to gallery forests of the Central Brazil, than to riparian forests of south-southeastern of Minas Gerais and São Paulo.
“…O número de indivíduos no estrato inferior é superior a todos os outros estratos, com 82,2% dos 1393 indivíduos amostrados pertencendo ao E1, 15,5% ao E2 e apenas 2,3% ao E3 (figura 1). De acordo com Veloso (1947), à proporção que a associação evolui para o equilíbrio permanente, o número de indivíduos dos estratos inferiores diminui, em relação aos dos estratos superiores, que aumenta. Estes resultados demonstram que a floresta está regenerando-se e não está, portanto, em clímax.…”
-(Composition, structure and ecological aspects of the riparian forest of the Araguari River within Triângulo Mineiro region). The study aimed to characterize the tree community of a riparian forest, one of the remnants on the Araguari River, at Uberlândia, Triângulo Mineiro, Minas Gerais State. The study was investigated by phytosociological survey of 110 plots of 10 m × 10 m (1,1 ha). All trees with CAP ≥ 15 cm were registered. There were sampled 1,393 trees distributed in 89 species and 36 families. Hirtella gracilipes (Hook.f.) Prance was the most abundant specie, with the highest frequency, density and VI. The Shannon index was H' = 3,65 nats.ind -1 . The analysis of the vertical structure indicated the occurrence of three strata in the riparian forest: the canopy, the understory and an intermediate stratum. The floristic comparisons indicated that the riparian forest of Araguari River is more similar to the Triângulo Mineiro forests and to gallery forests of the Central Brazil, than to riparian forests of south-southeastern of Minas Gerais and São Paulo.
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