ISO INTERNATIONAL STANDARD 8689-1 First edition 2000-03-15 Water quality Biological classification of rivers : Part 1: Guidance on the interpretation of biological quality data from surveys of benthic macroinvertebrates Qualite de I'eau Classification biologique des rivieres - Partie 1: Lignes directrices pour I'interprétation des donneées relatives a la qualite biologique a partir d'études des macro-invertebrés benthiques Reference number ISO 8689-1:2000(E) ISO @ ISO 2000 :08 MDT ISO 8689-1:2000(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The IsO Central Secretariat accepts no liability in this area. Adobe is a trademarkof Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event ?ISO2000 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO's member body in the country of the requester. ISO copyright office Case postale 56. CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 734 10 79 E-mail [email protected] Web www.iso.ch Printed in Switzerland @ ISO 2000 - All rights reserved ermittedwithoutlicense from IHS ot for Resale, 04/23/2007 09:09:08 MDT ISO 8689-1:2000(E) Foreword IsO (the International Organization for Standardization) is a worldwide federation of national standards bodies (isO member bodies).The work of preparingInternationalStandardsisnormally carried outthroughISOtechnical the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with IsO, also take part in the work. IsO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/lEC Directives, Part 3. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this part of isO 8689 may be the subject of patent rights. IsO shall not be held responsible for identifying any or all such patent rights. International Standard ISO 8689-1 was prepared by Technical Committee ISO/TC 147, Water quality. Subcommittee SC 5, Biological methods. IsO 8689 consists of the following parts, under the general title Water quality — Biological classification of rivers: -Part 1: Guidance on the interpretation of biological quality data from surveys of benthic macroinvertebrates Part 2: Guidance on the presentation of biological quality data from surveys of benthic macroinvertebrates Annex A of this part of ISO 8689 is for information only. ii