00000nam 2200000zi 4500 9.870413 CaOODSP 20241203113647 m o d f cr ||||||||||| 190322s1987 onc #ob f000 0 eng d CaOODSP eng rda CaOODSP eng fre e------ En13-5/87-138E-PDF Metcalfe-Smith, J. L. (Janice L.) author. Biological water quality assessment of running waters based on macroinvertebrate communities : history and present status in Europe / by Janice L. Metcalfe. Burlington, Ontario, Canada : National Water Research Institute, Rivers Research Branch, [1987?] 1 online resource (42 pages, 22 unnumbered pages). text txt rdacontent computer c rdamedia online resource cr rdacarrier [NWRI contribution] ; 87-138 "RRB-88-59." Handwritten note on title page: "Published in Environmental Pollution, 1989." Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references. "This paper reviews the history and development of biological water quality assessment using macroinvertebrates in Europe, and critically evaluates each of the principal approaches used. As the biotic approach incorporates the most highly regarded features of the saprobic and diversity approaches, it has received the most attention in recent years. Most modern biotic index and score systems have evolved from the Trent Biotic Index, through a series of refinements and adaptations (i.e. the Extended Biotic Index, Chandler's Score, Indice Biotique) into the two modern systems. These methods are the Biological Monitoring working Party Score System, used mainly in Great Britain, and the Belgian Biotic Index Method. The results of these techniques are now influencing policy decisions concerning surface water management in Europe, where macroinvertebrate community assessments are being used as a planning tool for managing water uses, for ambient monitoring, and for evaluating the effectiveness of pollution control measures. New research directions aimed at improving the performance of bioassessment techniques are being explored. These include defining reference communities based on stream typology which can then be used to set water quality objectives, and applying these methods to the assessment of toxic pollution"--Abstract. Includes a management perspective and abstract in English and French. gccst Water quality gccst Biological diversity gccst Assessment Canada. Environment Canada. National Water Research Institute (Canada). Rivers Research Branch. NWRI contribution ; 87-138. (CaOODSP)9.844121 PDF 5.13 MB https://publications.gc.ca/collections/collection_2019/eccc/en13-5/En13-5-87-138-eng.pdf