My area of research is centered on the dynamic of nutrients and chromophoric dissolved organic matter (CDOM) in the floodplain-river system of the Middle Paraná River, as well as their relations with phytoplankton. My studies include the effects of the hydrosedimentological regime and hydrological connectivity on the concentration and transport of several chemical forms of nitrogen, phosphorus, silica and dissolved organic carbon in the spatial gradient. In this frame, I analyze the influence of the hydrosedimentological conditions on the environmental heterogeneity in the spatial and temporal dimension. Recently, I began to study the impact of livestock on the dynamic of nutrients, CDOM, and fluorescent dissolved organic matter (FDOM) in floodplain lakes of the Middle Paraná River.