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dc.contributor.authorWitt, A.
dc.contributor.authorBeale, T.
dc.contributor.authorvan Wilgen, B.W.
dc.date.accessioned2019-01-28T11:44:06Z
dc.date.available2019-01-28T11:44:06Z
dc.date.issued2018
dc.identifier.citationArne Witt, Tim Beale & Brian W. van Wilgen (2018) An assessment of the distribution and potential ecological impacts of invasive alien plant species in eastern Africa, Transactions of the Royal Society of South Africa, 73:3, 217-236, DOI: 10.1080/0035919X.2018.1529003en_ZA
dc.identifier.urihttp://hdl.handle.net/123456789/2591
dc.description.abstractWith a few exceptions, comprehensive lists of alien plants that invade natural ecosystems are lacking in sub-Saharan Africa. Some available lists are either preliminary or localised, or focus on agricultural weeds. This study set out to compile a list of alien plant species that are invading natural ecosystems and rangelands in five countries in eastern Africa, and to map the distribution of the species that threaten ecosystem integrity and productivity. The location of all alien plant species seen during surveys between 2008 and 2016 was recorded using a hand-held GPS device, as well as their status in terms of either being present and/or naturalised, or invasive and spreading. Individual occurrence records were summarised at the scale of half degree grid cells (∼55 km × 55 km). The survey covered almost half (522) of the 1063 grid cells in Ethiopia, Kenya, Tanzania, Uganda and Rwanda. We recorded 164 invasive alien species in 110 genera and 47 families. We provide further information on the distribution and impacts of 30 species considered to have the greatest impacts in terms of transforming natural ecosystems, as well as on a further 21 species with limited distributions that could potentially become ecosystem transformers. Invasive alien plants are clearly a widespread and growing problem in eastern Africa, and capacity to manage them effectively remains a problem. A great deal of work needs to be done to raise awareness of the problem, and to identify appropriate responses that will be effective in resource-poor countries.en_ZA
dc.language.isoenen_ZA
dc.publisherTaylor & Francisen_ZA
dc.subjectinvasive alien plantsen_ZA
dc.subjecteastern Africaen_ZA
dc.subjectdistributionen_ZA
dc.subjectimpactsen_ZA
dc.titleAn assessment of the distribution and potential ecological impacts of invasive alien plant species in eastern Africaen_ZA
dc.typeJournalArticlesen_ZA
dc.cibjournalTransaction of the Royal Society of South Africaen_ZA
dc.cibprojectNAen_ZA


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