Biological Aspects of Freshwater Pollution. Proceedings of - download pdf or read online

By O. Ravera (Eds.)

ISBN-10: 0080234429

ISBN-13: 9780080234427

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Extra resources for Biological Aspects of Freshwater Pollution. Proceedings of the Course Held at the Joint Research Centre of the Commission of the European Communities, Ispra, Italy, 5–9 June 1978

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1976). A mechanism of the effects of water hardness on the lethality of heavy metals to fish. Chemosphere, 5: 299-303 . Systems of Biological Indicators for Water Quality Assessment^ G. Persooneand N. De Pauw Laboratory for Biological Research in Aquatic Pollution, J. Plateaustraat22, B-9000 Ghent/Belgium ABSTRACT The paper reviews and comments on the major methods which have been worked out at the international level for the assessment of the quality of surface waters with the aid of biological-ecological criteria.

8). However, chelating agents themselves (which, for example, frequently occur as components of modem detergents) may be toxic also (Chau & Shiomi, 1972; Childs, 1971). Nitrilotriacetic Acid (NTA, which was the most eligible replacement for the phosphate in detergents which were known to cause eutrophication problems) has been shown to have consider­ able complexing properties and to be toxic to freshwater invertebrates. Any chance of it reaching human populations should be avoided because of the risk of embryonic abnormalities (Thom 1971).

Biological monitoring of the aquatic environment. Spec, tech. Pubis. A m . Soc. Test. , 528: 46-60. Winner, R . W . (1976). Toxicity of copper to daphnids in reconstituted and natural waters. Ecol. Res. Service U . S . Environmental Protection Agency, 600/3 - 76 - 051, Washington, D . C . , Yeager,R. and Farrel, Μ . P . (1977). Effect of food type on the acute and chronic toxicity of copper to Daphnia magna. Freshwat. , 7: 343-349. Wright,A. (1976). The use of recovery as a criterion for toxicity.

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Biological Aspects of Freshwater Pollution. Proceedings of the Course Held at the Joint Research Centre of the Commission of the European Communities, Ispra, Italy, 5–9 June 1978 by O. Ravera (Eds.)


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