By G. Howells, D. J. A. Brown (auth.), G. Howells, T. R. K. Dalziel (eds.)
Detailed and entire money owed of pre-liming stipulations, liming options hired, post-liming adjustments in water caliber and fish restoration.
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Extra info for Restoring Acid Waters: Loch Fleet 1984-1990
Sample text
The whole catchment of Lake Tjonnstrand was limed (3 t ha -I) in 1983; acidity was reduced and calcium levels raised as limestone dissolved in the runoff water. Although some deterioration in pH and calcium concentration was evident during storm rainfalls, reasonable conditions have been maintained over more than four years. Brook trout and brown trout were stocked at the end of 1981, and successful survival and growth are reported. 3 North America Within the United States, until recently most liming efforts were directed towards neutralisation of acid mine drainage waters.
And Josephson, D. (1986). Extensive Evaluation of Lake Liming, Restocking Strategies, and Fish Population Response in Acidic Lakes Following Neutralization by Liming. EELUT, Interim Progress Report, NEC - 86/18. USFWS, 117pp. K. (l988). Cooperative Federal-State liming research on surface waters impacted by acid deposition. Water Air Soil Poll. 41: 53-74. P. (l909). Uber die Messung und die Bedeutung der Wasserstoff konzentration bei enzymatischen Prozessen. Biochem. Zeits. 21: 131-39. E. (I 926}.
The soils of the catchment probably contain a large store of organic sulphur which has accumulated from both natural and anthropogenic sources. As sulphate deposition declines, this store will tend to release stored sulphate, buffering the decline, and slowing recovery. Potentially, the sulphur store could maintain present sulphate release to drainage waters for many hundreds of years. g. , 1988) suggests that some catchment sulphate mineralisation does occur and is likely to delay the fall in sulphate concentrations in lakes and streams at least for some years.