The anticipated degree of success of different approaches to lake rehabilitation

Journal of Aquatic Ecosystem Health - Tập 2 - Trang 95-98 - 1993
Jan Barica1
1National Water Research Institute, Burlington, Canada

Tóm tắt

The anticipated degree of success for different approaches to water quality management (egosystemic, piecemeal, environmental, and ecosystemic) in four lake ecosystem types (hypereutrophic, urban, acidified, and recreational) at different stages of ecological degradation, was assessed. The success of an ecosystem approach, particularly its preventive aspects, appears to be inversely proportional to the state of ecosystem degradation. The highest degree of success is expected in relatively undisturbed lakes through stringent preventive and legislative measures. Combinations of all the available options and approaches should be utilized when deciding the optimum corrective measures to rehabilitate degraded ecosystems effectively.

Tài liệu tham khảo

Allan, R. J. & A. J. Ball, 1990. An overview of toxic contaminants in water and sediments of the Great Lakes. Can. Assoc. for Water Pollution Research and Control, Monograph Series No. 2, 292 pp. Barica J., 1987. Water quality problems associated with high productivity prairie lakes in Canada: a review. Water Qual. Bull. 12/3: 107–114. Barica J., 1989. Recovery of the Laurentian Great Lakes, 1970–1985; eutrophication aspects. Sym. Biol. Hung. 38; Akademiai Kiado, Budapest, pp. 43–49. Canada-U.S. Great Lakes Water Quality Agreement, 1978. Ottawa-Washington. DOE-MOE (Department of the Environment-Ministry of the Environment), 1989. Remedial action plant for Hamilton Harbour. Summary Report, March 1989, 162 pp. RMCC (Federal/Provincial Research and Monitoring Coordinating Committee), 1990. The 1990 Canadian long-range transport of air pollutants and acid deposition assessment report, Part 4, aquatic effects. Ottawa, Ontario. IJC (International Joint Commission), Great Lakes Science Advisory Board, 1987. Report. IJC, 1991. Persistent toxic substances: virtually eliminating inputs to the Great Lakes. Interim Report prepared by the Virtual Elimination Task Force, Windsor, Ontario, 42 pp. MOE-DOE (Ministry of the Environment-Department of the Environment), 1988. Severn Sound Remedial Action Plant, Part 1. Environmental Conditions and Problem Definition, Toronto, 99 pp. Vallentyne, J. R. & A. L. Hamilton, 1987. Managing human uses and abuses of aquatic resources in the Canadian ecosystem. In: M. C. Healey & R. R. Wallace (eds), Canadian Aquatic Resources, Can. Bull. Fish. Aquat. Sci. 215: 513–533.