Florística, estrutura e dispersão de sementes de três trechos de floresta estacional perenifólia ribeirinha na bacia hidrográfica do rio das Pacas, Querência-MT

• Autor(a) principal: Stefanello, Daniel
• Data de Publicação: 2008
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: LOCUS Repositório Institucional da UFV
• Texto Completo: http://locus.ufv.br/handle/123456789/3008
• topic: Mata ciliar; Amazônia; Fitossociologia; Riparian forest; Amazon; Phytosociology; CNPQ::CIENCIAS AGRARIAS::RECURSOS FLORESTAIS E ENGENHARIA FLORESTAL::CONSERVACAO DA NATUREZA

Little is known about the composition of flora and ecological Seasonal Forest riparian, which are relevant to help programmers for the conservation and restoration of vegetation cover. The objective of this study was to analyze the floristic composition, phytosociologic syndromes and dispersion of the component tree of the forest gallery of the River Watershed of Pacas, and the similarity of floristic phytophisiognomy with other forests of the Amazon area and the Cerrado. We selected three points of sampling farms located in: Vale Verde, Dois Americanos, and Amoreiras. For the sampling of vegetation were allocated 42 plots of 25 x 10 m in three points (East, Mid and Foz), which included all individuals diameter trees that had the height of 1.30 m above the ground (DAP) ≥ to 5 cm . The analysis of floristic similarity was made through the index of Jaccard and cluster analysis. The total density of the areas sampled was 1688 ind. / ha, 69 species belonging to 51 genera and 31 families. The families with the highest number of individuals were Lauraceae, Melastomataceae, Fabaceae and Burseraceae. These four families together accounted for 49.8% (N = 842) of all individuals sampled in the community where the other families contributed 50.2% (N = 846) of individuals. Ocotea caudata (Nees) Mez, Jacaranda copaia (Auubl.) D. Don, Ocotea guianensis Aubl. Sloanea eichleri K. Schum., Miconia pyrifolia Naudin, Zigia caractae (Kinth) L. Rico and Protium pilosissimum Engl were the species that had the highest value of importance. The index of diversity of Shannon (H ') was obtained from 3673 nats / individual and equabilidade (J') = 0867. In assessing the species on their respective syndromes of dispersal of diaspores was observed that 86% of the species has spread zoochoric Syndrome, anemochoric 10%, 3% barochoric and 1% autochoric. The predominance of species with Syndrome spread by animals is important in the community and therefore the elimination of frugivorous animals in the environment can compromise the reproduction and the dynamics of various species. In this sense, it is clear the need to preserve areas of native Forest in this basin, and promote the effectiveness of Environmental Licensing System in Rural Properties.