Caracterização ictiológica e geoambiental da bacia do rio São Francisco Falso - braço sul, oeste do Paraná

Abstract

Hydrographic basins have been presented as the main category of spatial analysis in the context of environmental studies. The wide use of water resources, in Brazil and in the world, has brought different consequences and environmental impacts associated with water and soil degradation, particularly in environments with great human interference. In this context, the dynamics of a river determines the fish's life strategy. In this sense, aquatic systems, which are important for the maintenance of life, have been undergoing an accelerated process of deterioration of their physical, chemical and biological characteristics, thus interfering with the direct loss of biodiversity. The present work aimed to perform the geoenvironmental characterization of the São Francisco Falso river Basin; verify the ecological attributes of the fish species that occur in the mentioned area and investigate the possible relationships between fish populations and the physico-natural and limnological variations in the basin. In short, this approach becomes relevant, as the analysis of the local biodiversity of the São Francisco Falso River - South Arm, with regard to the fish community, combined with geoenvironmental data enables an analysis of the influence of such factors on the aquatic and the ichthyofauna present, which may guide future management and conservation plans for the environment in question. Based on the surveys carried out, it can be concluded thatthe geoenvironmental characterization mappings will be able to contribute to the conservation of soil and water in the basin and improve the environmental condition for the fish fauna, as well as serve as a basis for planning and management of the São Francisco Falso river Basins.