HouleGagnonCoutureEtAl2004

Référence

Houle, D., Gagnon, C., Couture, S. and Kemp, A. (2004) Recent recovery of lake water quality in Southern Quebec following reductions in sulfur emissions. Water, Air, and Soil Pollution: Focus, 4(2-3):247-261. (Scopus )

Résumé

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 (SO42-), with 40 of the 43 lakes now showing steep declines in SO42- concentrations. The drop in SO42- was associated with a significant decrease in Ca2+ concentrations in 77% of the lakes (67% for Mg2+ concentrations). Overall, the acid-neutralizing capacity was increasing in 19 lakes and decreasing only in three, while 21 lakes showed no temporal trends. Compared with previous trend studies of the LRTAP-Québec network for the period of 1985-1993, the longer period (1985-1999) shows a clear improvement, with the proportion of lakes that were acidifying changing from 24 to 7% and with the proportion of lakes that were recovering changing from 16 to 35%. These observations suggest that the recent drop in SO42- deposition in the northeastern U.S. and eastern Canada was significant enough to allow chemical recovery for a significant proportion of Québec lakes. © 2004 Kluwer Academic Publishers.

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@ARTICLE { HouleGagnonCoutureEtAl2004,
    AUTHOR = { Houle, D. and Gagnon, C. and Couture, S. and Kemp, A. },
    TITLE = { Recent recovery of lake water quality in Southern Quebec following reductions in sulfur emissions },
    JOURNAL = { Water, Air, and Soil Pollution: Focus },
    YEAR = { 2004 },
    VOLUME = { 4 },
    PAGES = { 247-261 },
    NUMBER = { 2-3 },
    NOTE = { cited By 19 },
    ABSTRACT = { 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 (SO42-), with 40 of the 43 lakes now showing steep declines in SO42- concentrations. The drop in SO42- was associated with a significant decrease in Ca2+ concentrations in 77% of the lakes (67% for Mg2+ concentrations). Overall, the acid-neutralizing capacity was increasing in 19 lakes and decreasing only in three, while 21 lakes showed no temporal trends. Compared with previous trend studies of the LRTAP-Québec network for the period of 1985-1993, the longer period (1985-1999) shows a clear improvement, with the proportion of lakes that were acidifying changing from 24 to 7% and with the proportion of lakes that were recovering changing from 16 to 35%. These observations suggest that the recent drop in SO42- deposition in the northeastern U.S. and eastern Canada was significant enough to allow chemical recovery for a significant proportion of Québec lakes. © 2004 Kluwer Academic Publishers. },
    AUTHOR_KEYWORDS = { Acid deposition; Acidification reversibility; Alkalinity; Basic cations; Lake chemistry; Lake recovery; Québec; Sulfate; Surface water recovery },
    DOCUMENT_TYPE = { Article },
    DOI = { 10.1023/B:WAFO.0000028358.19709.81 },
    KEYWORDS = { acidification; emission control; lake pollution; remediation; sulfate; water quality, Canada; North America; Quebec },
    SOURCE = { Scopus },
    URL = { https://www.scopus.com/inward/record.uri?eid=2-s2.0-4344567334&partnerID=40&md5=408d0669d06f205b63dbe5e3fccd2d94 },
}

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