Aquatic environments - marine and freshwater basins - are increasingly
subject to anthropogenic stresses. Likewise, there is an increasing
demand for better and more reliable methods for the monitoring and
assessment of these large and important ecosystems and the
interrelations between the physical and chemical features of water
bodies. The use of radioisotopic techniques offers a wide range of
methodological possibilities because all biologically active compounds
contain long-living radioisotopes which make the analytical field and
laboratory work possible without the precautions involved in direct
radiation health hazards.