00000000nam 2200000za 4500
0019.866899
003CaOODSP
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008190110s1986    oncd    ot   f000 0 eng d
040 |aCaOODSP|beng
041 |aeng|bfre
043 |an-cn-on
0861 |aEn13-5/86-71E-PDF
24500|aSedimentary diatom analyses from the Turkey Lakes watershed, Ontario |h[electronic resource] / |cby L.D. Delorme ... [et al.].
260 |a[Burlington, Ont. : |bNational Water Research Institute, |c1986]
300 |a73, [87] p. : |bcharts, figs.
4901 |aNWRI contribution ; |vno. 86-71
500 |aDigitized edition from print [produced by Environment and Climate Change Canada].
504 |aIncludes bibliographic references: p. 69-72.
520 |a"Four lakes north of Sault Ste. Marie, collectively known as the Turkey Lakes, show little impact by atmospheric loading. This assessment has been arrived at by using fossil algae, diatoms, to infer past acidity or pH trends. These lakes have been considered to be in the early stages of acidification. The fossil diatoms from the headwater lake, Batchawana Lake, may show an increase in the acidity near the surface of sediments implying an increase in acidity in recent times. The fossil diatoms from the lower lakes indicate the lake waters have been adequately buffered in the recent past. This low level buffering capacity has been sufficient to counteract acidified atmospheric loading"--Management Perspective.
546 |aText in English, prefatory material in English and French.
69207|2gccst|aWater management
69207|2gccst|aWater quality
7001 |aDelorme, L. D.
7101 |aCanada. |bEnvironment Canada.
7102 |aNational Water Research Institute (Canada)
830#0|aNWRI contribution ;|vno. 86-71.|w(CaOODSP)9.844121
85640|qPDF|s14.29 MB|uhttps://publications.gc.ca/collections/collection_2019/eccc/En13-5-86-71-eng.pdf