Fernando Martínez-Jerónimo. Professor and Researcher at the Instituto Politécnico Nacional, Escuela Nacional de Ciencias Biológicas. Leader of the Experimental Hydrobiology Laboratory. Biologist, Master in Sciences in Ecology, Ph. D. in Ecology granted by the Instituto Politécnico Nacional, México. Work Experience for more than 40 years, teaching at the bachelor and postgraduate levels and conducting scientific research in Experimental Hydrobiology and Aquatic Ecotoxicology. Current research in Experimental Ecology and Hydrobiology of freshwater plankton and Aquatic Ecotoxicology of metals, pesticides, and emerging pollutants, in microalgae, cyanobacteria, Cladocera, and fish. Research experience in freshwater plankton and fish and the study of Harmful Cyanobacterial Blooms. Regular Member of the Society of Environmental Toxicology and Chemistry (SETAC), World Aquaculture Society (WAS), Association for the Sciences of Limnology and Oceanography (ASLO), and the Phycological Society of America (PSA).