Fatores que influenciam a distribuição de fitoplânctons no reservatório Passaúna, em Curitiba-PR

Abstract

Public supply reservoirs are intermediate environments between rivers and lakes. These environments have a large amount of algae, which can have numerous negative impacts, such as damaging equipment through corrosion, causing death to living organisms and also being harmful to human health. This study aimed to establish the patterns of algal blooms and define which parameters assist in their development through an IDW (Inverse Distance Weighting) interpolation model, in addition to evaluating the effect of floating modules of photovoltaic panels on the structure of this population. in the Passaúna reservoir in Curitiba - PR. Data regarding the amount of algae and the physical-chemical parameters nitrate, turbidity and Ph were collected in the FotoÁgua project. The algae were evaluated according to the identified classes: Bacillariophyta, Chlorophyta, Cyanophyta and Dinophyta. In the area close to the catchment, five points were established: two located at the ends of the floating modules, one in the middle and two outside the panel area. For this area, IDW interpolation maps were created in the QGIS software. Toxic taxa were found within the study area, such as Microsyst, Anabaena and Gymnodinium. In addition to abundant components from the Bacillariophyta and Chlorophyta classes. It is concluded that the nitrate and turbidity parameters resulted in values inversely proportional to the abundance of algae, while the pH was directly proportional. Furthermore, there were indications that the installation of solar panels could directly influence the reduction or increase of algae.