Marcos Callisto is a full Professor of Ecology at the Departamento de Genética, Ecologia e Evolução, Universidade Federal de Minas Gerais. He received hisPh.D, from the Universidade Federal do Rio de Janeiro, Brazil. Callisto’s research interests include ecology of headwater streams, freshwater biodiversity conservation, leaf litter decomposition, biomonitoring, environmental education, and ecological assessment. Callisto is on an Editorial Board for a renowned journal, has published over 100 papers in international journals, 46 book chapters and has been an editor on five books.