Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/8119
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dc.contributor.authorFoxcroft, LCen
dc.contributor.authorParsons, Melissaen
dc.contributor.authorMcLoughlin, CAen
dc.contributor.authorRichardson, DMen
dc.date.accessioned2011-07-19T16:01:00Z
dc.date.issued2008en
dc.identifier.citationSouth African Journal of Botany, 74(3), p. 463-475en
dc.identifier.issn0254-6299en
dc.identifier.issn1727-9321en
dc.identifier.urihttps://hdl.handle.net/1959.11/8119en
dc.description.abstractThe availability of suitable patches and gaps in the landscape is a crucial determinant of invasibility for alien plants. The type and arrangement of patches in the landscape may both facilitate and obstruct alien plant invasions, depending on whether alien species perceive the patches as barriers. In February 2000 tropical weather systems caused an extreme flood with an estimated return interval of 90 to 200 years in the Sabie River, South Africa. The impact of the 2000 flood on the Sabie River landscape provides an array of patches that may provide suitable resources for the establishment of alien plants. This study examines the distribution of alien plants in relation to patchiness of the Sabie River landscape. Our hypothesis was that if certain patches in the river landscape do not represent environmental barriers to alien plant invasion, alien species will occur preferentially in these patch types. The Sabie River within Kruger National Park [KNP] was divided into six patch types (zones, channel types, elevations, geomorphic units, substrates and flood imprint types). We then examined the distribution of native and alien woody and herbaceous density and species richness in patches. The density and species richness of alien plants in the Sabie River in KNP is very low when compared to the density and species richness of native plants. Some patches (bedrock distributary and braid bar geomorphic units) contained higher density and richness of alien plants compared to the other patches examined, indicating that these locations in the river landscape offer the resources necessary for alien plant establishment. Individual alien species are also associated with different parts of the river landscape. Failure of large numbers of alien plants to establish after the 2000 flood is most likely due to a combination of factors - the plant specific barriers imposed by landscape patchiness, the high abundance and richness of native vegetation leading to competition, and for some species certainly, the clearing by the management (Working for Water) programme.en
dc.languageenen
dc.publisherElsevier BVen
dc.relation.ispartofSouth African Journal of Botanyen
dc.titlePatterns of alien plant distribution in a river landscape following an extreme flooden
dc.typeJournal Articleen
dc.identifier.doi10.1016/j.sajb.2008.01.181en
dc.subject.keywordsBiological Sciencesen
dc.subject.keywordsEnvironmental Sciencesen
local.contributor.firstnameLCen
local.contributor.firstnameMelissaen
local.contributor.firstnameCAen
local.contributor.firstnameDMen
local.subject.for2008069999 Biological Sciences not elsewhere classifieden
local.subject.for2008059999 Environmental Sciences not elsewhere classifieden
local.subject.seo2008960406 Control of Pests, Diseases and Exotic Species in Fresh, Ground and Surface Water Environmentsen
local.profile.schoolSchool of Humanities, Arts and Social Sciencesen
local.profile.emailmparson@une.edu.auen
local.output.categoryC1en
local.record.placeauen
local.record.institutionUniversity of New Englanden
local.identifier.epublicationsrecordune-20110607-122326en
local.publisher.placeThe Netherlandsen
local.format.startpage463en
local.format.endpage475en
local.peerreviewedYesen
local.identifier.volume74en
local.identifier.issue3en
local.contributor.lastnameFoxcroften
local.contributor.lastnameParsonsen
local.contributor.lastnameMcLoughlinen
local.contributor.lastnameRichardsonen
dc.identifier.staffune-id:mparsonen
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.identifier.unepublicationidune:8294en
dc.identifier.academiclevelAcademicen
local.title.maintitlePatterns of alien plant distribution in a river landscape following an extreme flooden
local.output.categorydescriptionC1 Refereed Article in a Scholarly Journalen
local.description.statisticsepubsVisitors: 140<br />Views: 178<br />Downloads: 0en
local.search.authorFoxcroft, LCen
local.search.authorParsons, Melissaen
local.search.authorMcLoughlin, CAen
local.search.authorRichardson, DMen
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