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Fish kill at low pH in a Norwegian river

Abstract

THE decline in freshwater fish populations in parts of southern Norway is associated with increasing acidity in rivers and lakes1. The salmon has been eliminated from many rivers, and hundreds of lakes have lost their trout populations. The chief cause of increased acidity is acid precipitation which is the product of the emission, oxidation and long-distance transport of air pollutants, particularly sulphur dioxide2,3. Similar observations of acid rain and the disappearance of freshwater fish populations have been made in the United States, Canada and Sweden4–6.

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LEIVESTAD, H., MUNIZ, I. Fish kill at low pH in a Norwegian river. Nature 259, 391–392 (1976). https://doi.org/10.1038/259391a0

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  • DOI: https://doi.org/10.1038/259391a0

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