I hold a Bachelor's degree in Biology and a Ph.D. in Environmental Sciences from the University of Alcalá (Spain). My primary research interest is focused on aquatic ecology of streams and rivers, and I am also interested in ecotoxicology. My research activity is focused on understanding how natural communities respond to anthropogenic impact, particularly sewage effluents, changes in physical structure of stream habitat and the effect of alien species on ecosystems. I have studied the effects of eutrophication on fluvial macroinvertebrate communities, specifically their ecotoxicological impacts on aquatic species. I am particularly interested in the study of sub-lethal responses of aquatic invertebrates to toxics. More recently, I am involved in assessing the ecotoxicological impacts of pharmaceutical compounds on freshwater and terrestrial ecosystems. I have published several international articles on this issues, and I am open to new cooperation with other scientific groups.