(EFE) .- The insecticides and herbicides found in rivers, generated by human activity, affect communities diatoms are very abundant in the river biofilm, a community of microorganisms that live on the surfaces of pebbles and sediment of rivers, according to the thesis Environmentalists Marta Ricart.
The results of this study show that the entry of toxic substances in river systems can cause a chain effect on the biofilm, as well as increased toxicity caused by the interaction of different substances.
In his thesis, read at the Universitat de Girona and published in various journals, Marta Ricart has examined the different toxic effects on biofilms basins, which are a valuable tool in studying the consequences of the existence of contaminants in aquatic ecosystems.
Ricart According to the study, human activity is a major cause of entry into a wide variety of substances in river ecosystems and as a result, a wide range of pollutants from industrial, urban and agriculture have a presence in rivers .
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