Professor, Institute of Forestry and Environmental Sciences, University of Chittagong

Universidad de Alcalá, Dpto. CC de la Vida (UD Ecología)

Professor, University of Vermont

Florida Atlantic University

Stockholm University Baltic Sea Centre

Professor of Biology, Stetson University

Adjunt professor Universidad del Valle

Entomologist, collection Manager, University of Montreal

Professor of Marine Phycology, Universidad de Oriente