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Since 1985, monitoring activities have been conducted in a network of 43 lakes comprising the Québec portion of the Long-Range Transport of Airborne Pollutants (LRTAP) program. The results to date indicate that Québec lakes generally are responding positively to the generalized decline in precipitation sulfate (SO 42− ), with 40 of the 43 lakes now showing steep declines in SO4 ...
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