Aluminum toxicity to fish in acidic waters

  title={Aluminum toxicity to fish in acidic waters},
  author={Joan P. Baker and Carl L. Schofield},
  journal={Water, Air, and Soil Pollution},
An important consequence of acidification is the mobilization of Al from the edaphic to the aquatic environment. Elevated Al levels in acidic waters may be toxic to fish. Eggs, larvae, and postlarvae of white suckers (Catostomus commersoni) and brook trout (Salvelinus fontinalis) were exposed in laboratory bioassays to pH levels 4.2 to 5.6 and inorganic Al concentrations of 0 to 0.5 mg l−1. Aluminum toxicity varied with both pH and life history stage. At low pH levels (4.2 to 4.8), the presence… 
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Acidification of lakes and streams is a serious water quality problem in high elevation granitic ecosystems in the northeastern US1–3. An important consequence of acidification is the mobilisation of
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Although the present study needs deepening through further and more detailed experiments, it can be said that the pollutants under consideration represent a danger to herring eggs and larvae at least up to a dilution of 1:32000.
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Combined results from areas of silicate bedrock in the United States and Europe suggest that aluminum represents an important biogeochemical linkage between terrestrial and aquatic environments exposed to acid precipitation.