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Clearing invasive alien plants as a cost-effective strategy for water catchment management : the case of the Olifants river catchment, South Africa

dc.contributor.authorMorokong, Tshepoen_ZA
dc.contributor.authorBlignaut, Jamesen_ZA
dc.contributor.authorNkambule, Nonophileen_ZA
dc.contributor.authorMudhavanhu, Shepherden_ZA
dc.contributor.authorVundla, Thulileen_ZA
dc.date.accessioned2017-10-30T06:49:41Z
dc.date.available2017-10-30T06:49:41Z
dc.date.issued2016
dc.identifier.citationMorokong, T., et al. 2016. Clearing invasive alien plants as a cost-effective strategy for water catchment management : the case of the Olifants river catchment, South Africa. South African Journal of Economic and Management Sciences, 19(5):774-787, doi:10.4102/sajems.v19i5.1594
dc.identifier.issn2222-3436 (online)
dc.identifier.issn1015-8812 (print)
dc.identifier.otherdoi:10.4102/sajems.v19i5.1594
dc.identifier.urihttp://hdl.handle.net/10019.1/102404
dc.descriptionCITATION: Morokong, T., et al. 2016. Clearing invasive alien plants as a cost-effective strategy for water catchment management : the case of the Olifants river catchment, South Africa. South African Journal of Economic and Management Sciences, 19(5):774-787, doi:10.4102/sajems.v19i5.1594.
dc.descriptionThe original publication is available at https://sajems.org
dc.description.abstractInvasive alien plants have a negative impact on ecosystem goods and services derived from ecosystems. Consequently, the aggressive spread of invasive alien plants (IAPs) in the river catchments of South Africa is a major threat to, inter alia, water security. The Olifants River catchment is one such a catchment that is under pressure because of the high demand for water from mainly industrial sources and unsustainable land-use, which includes IAPs. This study considered the cost-effectiveness of clearing IAPs and compared these with the cost of a recently constructed dam. The methods used for data collection were semistructured interviews, site observation, desktop data analysis, and a literature review to assess the impact of IAPs on the catchment’s water supply. The outcomes of this study indicate that clearing invasive alien plants is a cost-effective intervention with a Unit Reference Value (URV) of R1.44/m3, which compares very favourably with that of the De Hoop dam, the URV for which is R2.93/m3. These results suggest that clearing invasive alien plants is a cost-effective way of catchment management, as the opportunity cost of not doing so (forfeiting water to the value of R2.93/m3) is higher than that of protecting the investment in the dam.en_ZA
dc.description.urihttps://sajems.org/index.php/sajems/article/view/1594
dc.format.extent14 pages
dc.language.isoen_ZAen_ZA
dc.publisherAOSIS Publishing
dc.subjectInvasive plants -- Cost effectivenessen_ZA
dc.subjectAlien plantsen_ZA
dc.subjectWatershed management -- South Africa -- Olifants River Catchmenten_ZA
dc.titleClearing invasive alien plants as a cost-effective strategy for water catchment management : the case of the Olifants river catchment, South Africaen_ZA
dc.typeArticleen_ZA
dc.description.versionPublisher's version
dc.rights.holderAuthors retain copyright


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