Arno’s specialities include ecological sanitation, nutrient flows, eutrophication of freshwater and marine systems, aquatic eco-toxicology and he has skills in communications, programme development, capacity building, research management, field and laboratory research, writing/editing and training.

Arno completed his PhD in 1982 at Queen’s University, Canada on the nutrient kinetics of the Great Lakes attached algae Cladophora glomerata and Stigeoclonium tenue. His MSc at Univ of Ottawa (1970-1974) examined indicator lotic periphyton downstream of sewage treatment plants and pulp and paper mills.

He worked from 1974 to 1982 at the Canada Department of Fisheries and Oceans, from 1982 to 1986 at the Baltic Sea Laboratory in Karlskrona, Sweden, from 1986-1990 as Editor-in-Chief of AMBIO at the Royal Swedish Academy of Sciences, and has been at SEI since 1991 as Communications Director, Manager of the EcoSanRes Programme and Senior Research Fellow. He has been Fellow of the World Academy of Art and Science since 2009.

He has carried out projects in Canada, Sweden, India, Germany, China, Kenya, Uganda, Tanzania, Sri Lanka, Egypt, Bulgaria, Estonia, Moldova, Burkina Faso, Brazil, Costa Rica, Mexico, Cuba, Senegal and South Africa. He has published 75 scientific articles and reports.