Biological assessment methods for watercourse

The objectives for this desk-study are: - preparation of a literature review on the international state-of-the-art biological assessment and presentation methods; - evaluation of routine biological monitoring and assessment methods in UN/ECE countries and comparison of these current practices with state-of-the-art; - formulation of recommendations for short-term and long-term harmonisation efforts. In order to meet the second objective RIZA has performed an enquiry amongst ECE-countries (especially those representated in the Task Force) by means of a questionnaire. The questionnaire contains a number of questions about biological monitoring activities. Chapter 4 will discuss the reported results.