Popis: |
Aquatic environments possess ecological and economical relevance. Unfortunately, these sites are subjected to high levels of anthropogenic impact worldwide [1]. Urban, industrial and farming activities are responsible for the discharge of pollutants. Fertilizers, sludge, organic compounds, heavy metals and all sources of wastewater are released into water bodies often without appropriate treatment. A few possible outcomes from these contaminations are: eutrophication, hypoxia, toxicity, bioaccumulation, and dissemination of pathogens [2]. These pollutants can spread across long distances. Thus, sparsely populated areas where human activities are less intense are also affected by those disturbances [1]. |