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109<br />
Table J33: Actions and environmental effects <strong>of</strong> water projects (according to the<br />
environmental criteria <strong>of</strong> the International Commission on Large Dams)<br />
(continued).<br />
6. Other:<br />
Characteristics <strong>of</strong> actions Environmental effects<br />
.<br />
6. Influence on land and water fauna:<br />
• Land fauna<br />
Mammals<br />
Birds<br />
Insects<br />
Reptiles and amphibians<br />
• Water fauna<br />
Economic fish species<br />
Other fish species<br />
Zooplankton<br />
Invertebrates<br />
Microorganisms<br />
Scarce and endangered species<br />
Source: After Anonymous, 1986. Management <strong>of</strong> the Water Resources <strong>of</strong> the<br />
Republic <strong>of</strong> South Africa. Department <strong>of</strong> Water Affairs. Pretoria. various<br />
pages.<br />
See also: lil Little. T., 1994. Economics and water management: booklet on the<br />
application <strong>of</strong> economic principles to water management. INR<br />
Monograph No. 12. Institute <strong>of</strong> Natural Resources. <strong>University</strong> <strong>of</strong><br />
Natal. Pietermaritzburg. 24 p.<br />
Note:<br />
(ii) Mirrilees. R. and Forster, S., 1993. Environmental resource<br />
economics - managing South Africa's environmental resources: a<br />
possible new approach, Department <strong>of</strong> Environment Affairs. Pretoria.<br />
32 p.<br />
(Hi) Stewart, T.J., Scott, L. and 1I0ni, K., 1993. Scenario based<br />
multicriteria policy planning for water management in South Africa,<br />
WRC Report No. 296/1/93, Water Research Commission. Pretoria.<br />
59 p. + app.<br />
Reservoir-induced earth tremors or earthquakes (and associated landslides),<br />
may be problematic in certain parts <strong>of</strong> the world (due to pressure exerted<br />
by the great volume <strong>of</strong> water - detailed seismic risk assessments<br />
notwitHstanding). Data on earth tremors and earthquakes in southern Africa<br />
can be found in annual reports published by the Department <strong>of</strong> Mineral and<br />
Energy Affairs (Geological Survey, now the Council for Geoscience), Private<br />
Bag X112, Pretoria, 0001. See for example: Graham, G., Brandt, M.B.C.,<br />
Ford, M., Saunders, I. and Brink, L., 1995. Catalogue <strong>of</strong> earthquakes in<br />
southern Africa and surrounding oceans for 1991 , Seismologic Series <strong>of</strong> the<br />
Geological Survey No. 26, Council for Geoscience, Pretoria. 22 p. Note that<br />
the first such report (with a slightly different title), was issued in 1969. The<br />
current title was assumed in 1974 (Report No. 6).
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