Dr. Jose Galizia Tundisi obtained his PhD (Estuaries Ecology, 1969) at the University of São Paulo/University of Southampton and his DSc (Ecology, 1977) at the University of São Paulo. He is President of the International Institute of Ecology in São Carlos, Brazil. He was previously a Full Professor of Biological Sciences, Federal University of São Carlos, 1972-84; Full Professor of Environmental Sciences, University of São Paulo, 1984-94; and President, Brazilian of the National Research Council, 1995-99. His awards include the Gold Medal “Augusto Ruschi”, Brazilian Academy of Sciences, 1986; the Moinho Santista Prize in Ecology, 1992; the Highest Brazilian Award for scientific achievement; the Boutros Ghali Prize for Environment and Development, UN, 1995; and the Commendador, Brazilian Government. He is a Member of the Brazilian Academy of Sciences, the São Paulo Academy of Sciences, and the Ecology Institute, “Excellence in Biology”, in Germany. Dr. Tundisi is the founder and director of the International Institute of Ecology in Sao Paulo, Brazil.Dr. Takako Matsumura Tundisi graduated in Natural History and received her Ph.D. in Biological Sciences (Zoology) from the University of São Paulo, Brazil. She was a lecturer and researcher in Aquatic Ecology at the Federal University of São Carlos for over two decades. Today, she is a director of the International Institute of Ecology (IIE) and of the International Association of Ecology and Environmental Management (IIEGA) in Brazil, both research and consulting organizations that have developed numerous research projects in water resources management and water quality through mathematical modeling.