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Esp?cies com voca??o para facilitar processos de restaura??o espont?nea de ecossistemas perturbados na vertente atl?ntica da Serra do Mar, Pira? ? RJ. / Survey of species destined to facilitate spontaneous processes of restoration of disturbed ecosystems in the Atlantic slope of the Serra do Mar, Pira? - RJ.Bayl?o Junior, Hiram Feij? 07 June 2010 (has links)
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Previous issue date: 2010-06-07 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior, CAPES, Brasil. / Disturbed Ecosystems present floristic composition changed, with a predominance of herbaceous vegetation, the soils are depleted, shallow, stony, with low infiltration and erosion presenting with different levels of Geodynamics. The individuals forest that colonized and settled in these environments, were considered rustic species. They were raised and their properties were evaluated in facilitating ecosystem evolved over 28 years, where the management was the restriction of pasture. The work was carried out in sections exposed to northern, local environmentally unfavorable of the watershed of Cacaria?s river, located in the Cacaria district, Pira? (S 22 ? 43'949''W and 43 ? 50'807''), located in the southern state of Rio de Janeiro. We found 14 rustic species in disturbed ecosystems, where only 4 survived to more advanced levels of the ecosystems (Tabernaemontana laeta, Sparattosperma leucanthum, Peltophorum dubium and Guarea guidonia), resulting in the same process of succession with 584 individuals and 43 species of 28 families in an area of 1.8 hectares, may constitute natural models of ecological restoration to be used in the Atlantic Forest. / Ecossistemas perturbados apresentam composi??o flor?stica alterada, com predom?nio de vegeta??o de porte herb?ceo, solos exauridos, rasos, pedregosos, com baixa infiltra??o e geodinamismos dos processos erosivos distintos. Os indiv?duos florestais que colonizam estes ambientes foram considerados esp?cies r?sticas. Eles foram levantados por censo em ?reas perturbadas e avaliadas os n?veis de coloniza??o espont?nea sob influencia das suas copas em ecossistema similar com 28 anos de restri??o ? pecu?ria. O estudo foi desenvolvido na vertente norte, local ambientalmente mais desfavor?vel por estar submetido a maiores perdas evapotranspirom?tricas da bacia hidrogr?fica do rio Cacaria, munic?pio de Pira? (S 22?43?949?? e W 43?50?807??), Rio de Janeiro. Foram encontrados 14 esp?cies r?sticas em ?reas perturbadas, onde apenas 4 subsistiram a n?veis mais evolu?dos do ecossistema (Tabernaemontana laeta, Sparattosperma leucanthum, Peltophorum dubium e Guarea guidonia), gerando sob as mesmas um processo de sucess?o com 584 indiv?duos e 43 esp?cies florestais, de 28 fam?lias em uma ?rea de 1,8 hectares. Estas informa??es podem ser essenciais ao desenvolvimento de modelos de restaura??o ecol?gica na Mata Atl?ntica.
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