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| 02161cam 2200337za 4500 |
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| 001 | 9.866964 |
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| 003 | CaOODSP |
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| 005 | 20221107162204 |
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| 007 | cr ||||||||||| |
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| 008 | 190111s1986 oncb ot f000 0 eng d |
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| 040 | |aCaOODSP|beng |
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| 041 | |aeng|bfre |
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| 043 | |an-cn--- |
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| 086 | 1 |aEn13-5/86-79E-PDF |
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| 100 | 1 |aJeffries, Dean Stuart. |
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| 245 | 10|aEvaluation of the regional acidification of lakes in eastern Canada using ion ratios |h[electronic resource] / |cby D.S. Jeffries. |
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| 260 | |aBurlington, Ont. : |bNational Water Research Institute, |c[1986] |
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| 300 | |av, 19 p. : |bmaps |
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| 490 | 1 |aNWRI contribution ; |vno. 86-79 |
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| 500 | |aDigitized edition from print [produced by Environment and Climate Change Canada]. |
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| 504 | |aIncludes bibliographic references : p. 17-19. |
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| 520 | |a"The ionic composition of lakewaters changes in response to acidic deposition. The alteration is usually manifested as decreased acid neutralizing capacity (ie alkalinity), and increased sulphate (and sometimes calcium + magnesium) concentrations. Given the predictable nature of these changes, it is possible to evaluate the geographic extent of the influence of acidic deposition by calculating appropriate ion ratios for lakes spread across eastern Canada. This report presents the results of such an evaluation in which ratios (alkalinity 3 ion : calcium + magnesium, sulphate = calcium + magnesium, and alkaninity : sulphate) were calculated for a large, high quality data base containing information for over 7000 lakes across all regions of eastern Canada. Contour maps illustrating the variability in the ratio values were prepared"--Executive summary, p. iii. |
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| 546 | |aText in English, abstracts in English and French. |
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| 692 | 07|2gccst|aWater management |
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| 692 | 07|2gccst|aWater quality |
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| 692 | 07|2gccst|aAcid rain |
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| 710 | 1 |aCanada. |bEnvironment Canada. |
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| 710 | 2 |aNational Water Research Institute (Canada) |
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| 830 | #0|aNWRI contribution ;|vno. 86-79.|w(CaOODSP)9.844121 |
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| 856 | 40|qPDF|s1.68 MB|uhttps://publications.gc.ca/collections/collection_2019/eccc/En13-5-86-79-eng.pdf |
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