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Assessing the effectiveness of invasive alien plant management in a large fynbos protected area

dc.contributor.authorKraaij, Tinekeen_ZA
dc.contributor.authorBaard, Johan A.en_ZA
dc.contributor.authorRikhotso, Diba R.en_ZA
dc.contributor.authorCole, Nicholas S.en_ZA
dc.contributor.authorVan Wilgen, Brian W.en_ZA
dc.date.accessioned2018-07-26T08:09:05Z
dc.date.available2018-07-26T08:09:05Z
dc.date.issued2017
dc.identifier.citationKraaij, T., et al. 2017. Assessing the effectiveness of invasive alien plant management in a large fynbos protected area. Bothalia - African Biodiversity and Conservation, 47(2):a2105, doi:10.4102/abc.v47i2.2105
dc.identifier.issn2311-9284 (online)
dc.identifier.issn0006-8241 (print)
dc.identifier.otherdoi:10.4102/abc.v47i2.2105
dc.identifier.urihttp://hdl.handle.net/10019.1/104195
dc.descriptionCITATION: Kraaij, T., et al. 2017. Assessing the effectiveness of invasive alien plant management in a large fynbos protected area. Bothalia - African Biodiversity and Conservation, 47(2):a2105, doi:10.4102/abc.v47i2.2105.
dc.descriptionThe original publication is available at http://abcjournal.org
dc.description.abstractBackground: Concern has been expressed about the effectiveness of invasive alien plant (IAP) control operations carried out by Working for Water (WfW). South African legislation now also requires reporting on the effectiveness of IAP management interventions. Objectives: We assessed the effectiveness of IAP management practices in a large fynbos protected area, the Garden Route National Park, South Africa. Methods: We undertook field surveys of pre-clearing IAP composition and the quality of treatments applied by WfW during 2012–2015 in 103 management units, covering 4280 ha. We furthermore assessed WfW data for evidence of change in IAP cover after successive treatments, and adherence to industry norms. Results: Despite the development of detailed management plans, implementation was poorly aligned with plans. The quality of many treatments was inadequate, with work done to standard in only 23% of the assessed area. Problems encountered included (1) a complete absence of treatment application despite the payment of contractors (33% of assessed area); (2) treatments not being comprehensive in that select areas (38%), IAP species (11%) or age classes (8%) were untreated; (3) wrong choice of treatment method (9%); and (4) treatments not applied to standard (7%). Accordingly, successive follow-up treatments largely did not reduce the cover of IAPs. Inaccurate (or lack of) infield estimation of IAP cover prior to contract generation resulted in erroneous estimation of effort required and expenditure disparate with WfW norms. Conclusions: We advocate rigorous, compulsory, infield assessment of IAP cover prior to contract allocation and assessment of the quality of treatments applied prior to contractors’ payment. This should improve the efficiency of control operations and enable tracking of both the state of invasions and effectiveness of management.en_ZA
dc.description.urihttps://abcjournal.org/index.php/abc/article/view/2105
dc.format.extent11 pages
dc.language.isoen_ZAen_ZA
dc.publisherAOSIS Publishing
dc.subjectIntroduced organismsen_ZA
dc.titleAssessing the effectiveness of invasive alien plant management in a large fynbos protected areaen_ZA
dc.typeArticleen_ZA
dc.description.versionPublisher's version
dc.rights.holderAuthors retain copyright


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