Metodologia para identificação de áreas de risco e prioritárias para conservação da avifauna na bacia hidrográfica do rio Una, Ibiúna/SP

• Autor(a) principal: Sales, Jomil Costa Abreu [UNESP]
• Data de Publicação: 2015
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/123141; http://www.athena.biblioteca.unesp.br/exlibris/bd/cathedra/04-05-2015/000829021.pdf
• topic: Mata Atlântica - Conservação; Biodiversidade - Ibiúna (SP); Avaliação de riscos ambientais; Geoprocessamento; Sistemas de informação geografica

The present dissertation aimed to build a methodology for the environmental risk areas identification and priorities for restoration and conservation of forest remnants by studying the richness and the diversity of birdsspecies, using GIS and Remote Sensing techniques through the Geographic Information Systems in the watershed of the Una River, located in the city of Ibiúna, São Paulo/Brazil. Furthermore, was realized studies of the physical environmentcompleting the mapping of land use and vegetation cover for identification of forest fragments to be used as sampling units performing the analysis of the Drainage density (Dd) and the generation of the Roundness Index (IC) and Edge Effect Index (IEB) for the construction of an Anthropic Exposure Indicator (IEA) for each fragment. After obtained these variables, was realized the richness analysis and thespecies diversity of birds and the population analysis was conducted through a survey of the species. Finally was elaborated a methodology for identification of risk areas and priorities for conservation of birds in the study area. The results obtained with the land uses and vegetation cover map showed that the type of the dominant land use throughout the study area is the class of forests with 3945.0 hectares. However, it is possible to observe strong presence of anthropic exposure areas upstream of the study area toward it’s downstream. Regarding IC, the sample units weren’t classified as rounded shape, i.e. with higher value to 0.8, with only a fragment located in the central part of the watershed and a fragment located upstream classified as elongated, and the others classified as very elongated. Concerning the IEB only a fragment, located downstream and two fragments located in the central part of the watershed, were classified as Low Pressure Anthropic, the others were classified as Medium Pressure Anthropic. The Anthropic Exposure Indicator (IEA) composed of the previous indexes ...