This publication reviews the present state of the art in applications of radioactive and stable isotopes in achieving a better understanding of environmental processes and in the protection of the aquatic environment. The main topics include: studies of the behaviour, transport and distribution of isotopes in the aquatic environment, climate change studies using isotopic records of the marine environment, global ocean isotopic studies, groundwater dynamics studies, submarine groundwater investigations, modelling of environmental processes,management of freshwater sources in coastal zones, new trends in radioecological investigations concentrating on the protection of marine biota against radioactive contamination, transfers in analytical technologies from bulk analyses to particle and compound specific analyses of environmental samples, development of new isotopic techniques such as ammonium molybdophosphate (AMP) and inductively coupled plasma methods (ICPMS), and their applications in environmental studies.
