Características Edáficas de Cinco Ambientes de Restinga do Parque Estadual Paulo Cesar Vinha-ES, Brasil

• Autor(a) principal: Rocha, Pablo de Azevedo
• Data de Publicação: 2012
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: LOCUS Repositório Institucional da UFV
• Texto Completo: http://locus.ufv.br/handle/123456789/5490
• topic: Restinga; Vegetação; Fração areia; Restinga; Vegetation; Sand fraction; CNPQ::CIENCIAS AGRARIAS::AGRONOMIA::CIENCIA DO SOLO

The State Park Paulo Cesar Vinha (PEPCV) has about 1,500 ha in area and approximately 12 km of coastline. It is located in the city of Guarapari, southern coast of the Espirito Santo State between the coordinates 20 ° 33'-20 ° 38'S and 40 ° 23'-40 ° 26'W. The Restingas occupy 80% of the Brazilian coast, which corresponds to 7110 km. This environment has its formation associated to the Quaternary period, which began about two million years ago. During this period the sea erosion it was deposited of sandy material due to the different stages of fluctuation levels on the sea and the longitudinal transport of sand. The study aimed to characterize the chemical, physical and microbiological of Restinga five environments: Open Clusia (nuclei between vegetation), Open Clusia (nuclei of vegetation) non-flooded Forest, periodically flooded Forest, Marsh and Herbaceous; generate data that can support recovery actions of disturbed areas and support for new research. Chemical analyzes were performed routinely calcination samples in a muffle furnace and subsequent determination of chemicals elements in ICP released by calcination. Physical aspects were analyzed such as, texture, fractionation of grains of sand in five classes: moisture equivalent, of the soil water characteristic curve and finally to determine the microbiological biomass and diversity of fungi and acteria. It was then carried out a transect in the study area, beginning with the complex vegetation Open Clusia, subsequently passing the non-flooded forest, periodically flooded forest and finally arriving in Marsh Herbaceous. In each vegetation unit were open trenches 0 to 40 cm depth, except at the Open Clusia formation, where ten trenches were opened, five and five in the nuclei of vegetation in the region between core vegetation where the soil is almost completely devoid of vegetation. In these trenches were sampled at 0-20 cm and 20-40 cm. Scanning electron microscopy revealed the presence of cavities in the grain of sand that are filled with organic mineral material that is capping the grain of sand. These aspects are fundamental for soil water retention and development of soil microbial. These results show that the chemical and physical soil properties, as well as the acidity and water saturation conditions have a direct influence on the distribution of vegetation, having reflected on soil, in terms of microbial biomass and diversity of microorganisms, which show difference between environments.