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Please use this identifier to cite or link to this item: http://hdl.handle.net/10204/3643

Title: External costs of sand mining in rivers: evidence from South Africa.
Authors: De Lange, W
Nahman, A
Theron, A
Keywords: Sand mining
Estuarine services
Estuaries
Social cost
Environmental Resource Economics Conference
Rivers
Construction industry
Issue Date: May-2009
Citation: De Lange, W, Nahman, A and Theron, A. 2009. External costs of sand mining in rivers: evidence from South Africa. Environmental Resource Economics Conference. Cape Town, South Africa, 21 - 22 May 2009. pp 1-19
Abstract: The valuation of estuarine goods and services serves to highlight the degree to which estuaries contribute to human well-being and to show that the social cost of activities which contribute to estuary degradation could be greater than the private gains. Researchers applied this notion to a list of estuaries in the eThekwini municipal area of South Africa to estimate private gains and social costs of sand mining enterprises. Sand mining in rivers is an important source of raw material for the construction industry, but impacts on sediment yield in estuaries, and therefore on estuarine functioning and service provision. Researchers confirmed the presence of negative externalities in the sand mining industry that are not reflected in the market price of sand, implying that the sand resource is currently being over-exploited, to the detriment of estuarine ecological functioning and long term social well-being. These external costs are estimated at the estuary level for the study area. An assessment of the viability of alternative sand supply sources to serve the growing demand in the construction industry is consequently recommended.
Description: Environmental Resource Economics Conference. Cape Town, South Africa, 21 - 22 May 2009
URI: http://hdl.handle.net/10204/3643
Appears in Collections:Resource-based sustainable development
Pollution and waste
Environmental and resource economics
Coastal and marine systems
General science, engineering & technology

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