Agricultural Chemicals and the Environment by Hester R.E., Harrison R.M. (eds.) PDF

By Hester R.E., Harrison R.M. (eds.)

ISBN-10: 0854042202

ISBN-13: 9780854042203

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O. Clarke, J. Appl. Ecology, 1984, 21, 11.  A. W. Fast, in Destratification of Lakes and Reservoirs to Improve Water Quality, ed. F. L. Burns and I. J. Powling, Australian Water Resources Council, Canberra, 1981, p. 515. 38 Eutrophication of Natural Waters and Toxic Algal Blooms There is some controversy about the use of this technique in terms of its efficacy and, although it may be attractive in terms of costs, there are few lakes in the UK which are deep enough to warrant its use. Bio-remediation The recent increase in the understanding of biological processes in lakes has led to the development of ‘ecotechnical methods’ of manipulating the trophic status of lakes.

I. Heaney, C. A. Mills, C. S. Reynolds and J. F. Talling, A General Assessment of Environmental and Biological Features of Windermere and their Susceptibility to Change, Freshwater Biological Association, Ambleside, 1985. C. S. , 1979, 5, 93. R. Gachier and D. J. Furrer, Schweizer. Z. , 1972, 34, 41. W. P. D. Stewart, E. May and S. B. Tuckwell, Tech. , MAFF, 1973, 32, 276. R. P. Troake, L. E. Troake and D. E. Walling, Tech. , MAFF, 1973, 32, 340. Eutrophication of Natural Waters and Toxic Algal Blooms however, is the fact that almost all of the increase arrived in solution, meaning that the readily available nutrient fraction increased over the same period by almost 14-fold.

It will be difficult to reduce concentrations further whilst -HCH is still approved for wide scale use. 6 Impact on the North Sea In the 1980s, pollution of the North Sea was addressed by a series of ministerial conferences attended by countries bordering the North Sea. At the second conference, the UK Government agreed to halve the load of 36 priority hazardous substances entering the North Sea by 1995. Eighteen of these substances are pesticides. The substances were selected for priority control because of their toxicity, persistence in the environment, and potential to accumulate.

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Agricultural Chemicals and the Environment by Hester R.E., Harrison R.M. (eds.)


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