Acid Deposition Effects on Geochemical Cycling and Biological Availability of Trace Elements (1985) / Chapter Skim
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3. Conclusions and Recommendations
3. Conclusions and Recommendations
Pages 44-46
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From page 44... ...
5. In the terrestr ial system, A1 toxicity to perennial plants is a real possibility, given the demonstrated toxicity of A1 to certain plant species in acid soils.
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From page 45... ...
We recommend that the National Trends Network, the National Atmospheric Deposition Program and the Canadian Atmospheric Sampling Program establish a program to obtain such data. During the development phase of this program, ecologists must determine whether wet and dry deposition data need to be obtained separately in order to relate deposition to ecosystem effects, or whether total deposition data would be sufficient.
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From page 46... ...
Accumulation and toxicity of metals other than Al have not been demonstrated for plants in soils receiving acid deposition except in reg ions where known sources produce greatly elevated levels of metal deposition or contamination. Tree ring analysts or metals reveals trends toward increasing uptake of metals in more recent years, and yields information on the response of trees to historical episodes of pollution.
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