This volume about "Valorisation des algues et autres végétaux aquatiques" is being published when studies are developping on natural environment protection and economical management for water and aquatic resources. It should help in setting up development strategies for exploitation of seaweeds as well as freshwater plants. This work is helpful to many readers and more particularly to : researchers, industrials, responsibles of research units or technical associations, teachers of various academic levels, all classes of dec is ion-makers, students. It will give them food for thought and bring many references about people already committed in these fields.
free text keywords: Economy, Exploitation, Fresh water plants, Seaweed, Economie, Végétaux d'eau douce, Algue