00000nam 2200000za 4500 9.848975 CaOODSP 20241203113641 cr ||||||||||| 171218s1985 oncab||fob|||f000 0 eng d CaOODSP eng eng fre n-cn-bc En13-5/85-167E-PDF In-lake precipitation of phosphorus by lime treatment [electronic resource] / T.P. Murphy ... [et al.]. Burlington, Ont. . : National Water Research Institute, Canada Centre for Inland Waters, [1985]. 41, [45] p. : ill., map NWRI contribution series ; 85-167 Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references. "Lime induced precipitation of phosphorus in Frisken Lake was evaluated as a lake restoration technique. The experimental site is in the semi-arid interior of British Columbia. The lake receives a high phosphorus loadingfrom the natural weathering of apatite. Before the lime treatment, less than half of the epilimnetic phosphorus precipitated with calcium carbonate. In 1983, the addition of 23 tonnes of Ca(OH)2 removed 80% of the chlorophyll a and 97% of the soluble reactive phosphorus (SRP) from the epilimnion. In 1984, the addition of 16 tonnes of lime removed more than 90% of the chlorophyll a and 60% of the SRP from the epilimnion. Most of the precipitated phosphorus dissolved in the hypolimnion. Several changes in lake chemistry indicated that lime treatment would produce more than a seasonal improvement in water quality"--Management perspective. Includes management perspective and abstract in English and French. gccst Lakes gccst Water quality Murphy, Thomas P. D. (Thomas Patrick Daniel), 1948- Canada. Environment Canada. National Water Research Institute (Canada) NWRI contribution ; no. 85-167 (CaOODSP)9.844121 PDF 4.97 MB https://publications.gc.ca/collections/collection_2017/eccc/En13-5-85-167-eng.pdf