Ecological quality of surface waters
This study provides a simplified classification scheme for assessing the ecological state of freshwater lakes to be used throughout the European Community, based on generally accepted physico-chemical and biological features such as transparency, dissolved oxygen, chlorophyll a and phosphorus concentrations, acid neutralising capacity, algae and macrophytes, macroinvertebrates and fish indices, and, lastly, a sediment index. Since the ultimate aim of the future Directive should be to reach a high ecological quality in all surface waters, in the proposed lake classification scheme a matrix, giving clear limitations of classes, has been considered, taking into account also the morphoedaphic index.
Bibliographic Reference: EUR 14563 EN (1992) 124 pp., FS, free of charge
Availability: Available from Joint Research Centre, Publication Department, I-21020 Ispra (Va.) (IT)
Record Number: 199511006 / Last updated on: 1995-08-18
Original language: en
Available languages: en