Manuel A.S. Graça is a full Professor of Ecology at the Department of Life Sciences, University of Coimbra, Portugal. He received his Ph.D. from the University of Sheffield, U.K. Since 2003, he is a visiting scientist at the Universidade Federal de Minas Gerais, BH, Brazil. His research interests include leaf litter decomposition, stream ecology, and biomonitoring. Graça is an editor on three journals, has published 134 paper in international journals, authored one book and edited two others.