Radioecology: development and objectives

The development of 'radioecology' in the last decade with a short glance to earlier periods is shown. Present activities are discussed. Both assessment and modelling approaches are going to become more developed. Attention is paid to sensitivity analysis and parameter variability. The requirements to measuring techniques are discussed. At present, problems can be solved only by cooperation of measurements and modelling activities. This collaboration is important for not to leave the field to groups, directed by politicians seeking for short term gain, in order to give retrospective justification in a specious manner of decisions not be based on objective analysis. (author)