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dc.contributor.authorvan Wilgen, B.W.
dc.contributor.authorRichardson, D.M.
dc.date.accessioned2013-03-04T07:21:39Z
dc.date.available2013-03-04T07:21:39Z
dc.date.issued2012
dc.identifier.citationvan Wilgen, B.W. and Richardson, D.M. (2012). Three centuries of managing introduced conifers in South Africa: Benefits, impacts, changing perceptions and conflict resolution. Journal of Environmental Management 106, 56-68en
dc.identifier.issn0301-4797en
dc.identifier.urihttp://hdl.handle.net/123456789/1269
dc.description.abstractAlien conifers, mainly pines, have been planted in South Africa for a range of purposes for over 300 years. Formal plantations cover 660 000 ha of the country, and invasive stands of varying density occur on a further 2.9 million ha. These trees have brought many benefits but have also caused unintended problems. The management of alien conifers has evolved in response to emerging problems such as excessive water use by plantations of conifers, changing values and markets, and the realities of a new ecological order brought about by invasive alien conifers. This paper reviews the history of conifer introductions to South Africa, the benefits and impacts with which they are associated, and the ongoing and evolving research that has been conducted to inform their management. The South African approach has included taking courageous steps to address the problem of highly invasive species that are also an important commercial crop. These interventions have not, however, had the desired effect of both retaining benefits from formal plantations while simultaneously reversing the trend of growing impacts associated with self-sown invasive stands. We suggest that different approaches need to be considered, including the systematic phasing out of commercial forestry in zones where it delivers low returns, and the introduction of more effective, focussed and integrated, region-specific approaches to the management of invasive stands of conifers. These steps would deliver much improved economic outcomes by protecting valuable ecosystem services, but will require political commitment to policies that could be unpopular in certain sectors of society.en
dc.format.extent1009778 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoenen
dc.publisherElsevieren
dc.subjectBiodiversityen
dc.subjectBiological invasionsen
dc.subjectFireen
dc.subjectForestryen
dc.subjectHydrologyen
dc.subjectLand-useen
dc.subjectPinusen
dc.titleThree centuries of managing introduced conifers in South Africa: Benefits, impacts, changing perceptions and conflict resolutionen
dc.typeJournalArticlesen
dc.cibjournalJournal of Environmental Managementen
dc.cibprojectNAen


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