Principles and Methods for Determining Ecological Criteria on Hydrobiocenoses

Editorial NoteOpening Session Esposto Di Apertur Introductory Report Expose Introductif Introductory Report Opening AddressEcological Consequences of Water Pollution Establisment of Criteria (Dose/Effect) Determinants in Freshwater Ecosystems and Man-modifiable Factors Inducing Change in Hydrobiocenoses Sintesi delle disoussioni avvenute dopo la comunicazione di H.A. Hawkes Summary of the Discussion following the Presentation of the Paper by H.A. Hawkes Variabili ecologiche e loro effetto sulla fauna acquatica Ecological Variables and their Effect on Aquatic Fauna Summary of the Discussion following the Presentation of the Paper Intérêt des végétaux aquatiques dans la caractérisation de la qualité des eaux et principes des méthodes utilisées Value of Aquatic Plants in the Characterization of Water Quality and Principles of the Methods Used Summary of the Discussion following the Presentation of the PaperGeneral Principles of the Biological Monitoring of Surface Waters Principes fondamentaux pour la détermination de critères écologiques relatifs aux biocénoses d'eau courante Basic Principles for the Determination of Ecological Criteria for Hydrobiocenoses of Running Water Summary of the Discussion following the Presentation of the Paper The Tolerance of Aquatic Life to Chemical Pollution and the Idea of Ecological Limits in the Management of International Rivers Summary of the Discussion Following the Presentation of the PaperThe Practical Methods Used in the Biological Monitoring of Surface Waters Biological Monitoring of Rivers in the Community Comparative Study of Biological Water Assessment Methods - Practical Demonstration on the River Main Summary of the Discussion Following the Presentation of the Papers Active Surveillance and Use of Bioindicators Relations entre essais biologiques en laboratoire et expériences in situ Relationship between Laboratory Bioassays and in situ Experiments Summary of the Discussion following the Presentation of the Papers General Discussion (Summary) Rapport De Synthese Et Conclusions Conclusions List of ParticipantsAnnexes I. Comparison of Biological Procedures for Assessment of Water Quality; A Comparative Study pf Water Assesment Methods — Practical Demonstration on the River Main, Federal Republic Germany II. A Systems of Tests for the Assessment of Potential Effects of Chemicals and Quality Data in the Aquatic Environment III. Environmental Protection Terminology Extract from the Official Journal of the European Communities, Vol. 16, No. C112, 20-12-73