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dc.contributor.authorNdhlovu, Thabisisani
dc.date.accessioned2014-04-24T11:30:04Z
dc.date.available2014-04-24T11:30:04Z
dc.date.created2011en
dc.date.issued2014-04-24T11:30:04Z
dc.identifier.urihttp://hdl.handle.net/123456789/1404
dc.description.abstractI evaluated the impact of Prosopis invasion and clearing on ecological structure, function and agricultural productivity in heavily grazed Nama Karoo rangeland on two sheep farms near the town of Beaufort West in the Western Cape Province of South Africa. My aims were to (1) determine the effects of invasion and clearing on rangeland vegetation composition, diversity (alien and indigenous species richness) and structure (alien and indigenous species cover), soil vegetation cover (plant canopy and basal cover) and agricultural productivity (grazing capacity), (2) describe the vegetation processes that underlay the invasion and clearing impacts and (3) evaluate the success of clearing in facilitating unaided restoration of ecological structure, function and agricultural productivity in formerly invaded rangeland. I hypothesised that invasion would significantly change rangeland vegetation composition and structure, leading to greater alien species richness and cover and lower indigenous species richness and cover while clearing would lead to lower alien species diversity and cover and greater indigenous species richness and cover. In addition I hypothesized that invasion would reduce rangeland plant canopy and basal cover and grazing capacity while clearing would substantially increase them. Finally I predicted that vegetation composition, alien and indigenous species cover and richness, plant canopy and basal cover and grazing capacity would revert to pre-invasion status and levels within four to six years of clearing.en
dc.description.statementofresponsibilityEsler, Karen J.
dc.format.extent840033 bytes
dc.format.mimetypeapplication/pdf
dc.languageEnglishen
dc.language.isoen_US
dc.rightscopyrighten
dc.subjectprosopisen
dc.subjectmesquiteen
dc.subjectecosystem structureen
dc.subjectecosystem functionen
dc.subjectagricultural pdoductivityen
dc.subjectNama Karooen
dc.titleImpact of Prosopis (mesquite) invasion and clearing on ecosystem structure, function and agricultural productivity in semi-arid Nama Karoo rangeland, South Africaen
dc.mdidentification.purposeSubmitted in partial fulfilment of the requirements for the degree Master of Science in Conservation Ecologyen
dc.mdidentification.organizationnameCentre of Excellence for Invasion Biologyen
dc.mdidentification.deliverypointFaculty of Science, Natural Sciences Building, Private Bag X1, Stellenbosch University, Matielanden
dc.mdidentification.postalcode7602en
dc.mdidentification.phone0218082832en
dc.mdidentification.electronicmailaddresskje@sun.ac.zaen
dc.mddataidentification.languageEnglishen
dc.mdusage.usagedatetime2011-03
dc.mdlegalconstraints.accessconstraintscopyrighten
dc.dqcompletenessomission.valueunitPercentageen
dc.mdmaintenanceinformation.maintenanceandupdatefrequencyUnknownen
dc.mdfeaturecataloguedescription.cataloguedate2014-04-24
dc.mddistributor.distributorcontactCentre for Invasion Biologyen
dc.mdformat.namePDFen
dc.exgeographicboundingbox.westboundlongituden/aen
dc.exgeographicboundingbox.eastboundlongituden/aen
dc.exgeographicboundingbox.northboundlattituden/aen
dc.exgeographicboundingbox.southboundlattituden/aen
dc.exverticalextent.minimumvaluen/aen
dc.exverticalextent.maximumvaluen/aen
dc.exverticalextent.unitofmeasuremetersen
dc.cibprojectNAen


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