Abstract
Acid precipitation, causing the acidification of freshwaters and hence damage to fisheries, affects more than 33,000 km2 of southern Norway1. As a first step in dealing with the acidification problem, Norway, Sweden and Finland have proposed that emissions of sulphur in Europe be reduced by 30% by 1993 (ref. 2). Using data from a 1974–75 survey of major-ion chemistry and fish populations in 683 lakes in southern Norway3, we predict here that a 30% reduction in sulphur deposition will restore chemical conditions such that 22% of the lakes now experiencing fisheries problems should be able to support fish.
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References
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Wright, R., Henriksen, A. Restoration of Norwegian lakes by reduction in sulphur deposition. Nature 305, 422–424 (1983). https://doi.org/10.1038/305422a0
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DOI: https://doi.org/10.1038/305422a0
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