Vegetation classification of the University of the Free State campus, Bloemfontein

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Date
2007-05
Authors
Nthejane, Maboee
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University of the Free State
Abstract
English: The aims of this study were to survey, classify, describe and ecologically interpret the natural plant communities of the University of the Free State campus in Bloemfontein. A further aim was to apply the urban biotope mapping technique to the campus so that ecological information may be availed to decision makers at the University in an easily accessible format. The phytosociological study was based on Braun-Blanquet procedures. A total of 222 reléves were classified using TURBOVEG, TWINSPAN and MEGATAB. Ordination using the DECORANA ordination algorithm was also applied to the floristic data in order to determine the relationship between the vegetation units and environmental variables. The vegetation was classified into 5 Major Grassland Communities and 2 Major Wetland Communities. All the vegetation units and sub-units were ecologically interpreted and described. Biotope mapping was conducted on the campus using a German technique that has been used in the city of Potchefstroom after being customized to South African conditions. The resultant biotope map showed that most of the space on the campus is taken up by 3 biotope types, namely the built-up area with its intensively managed lawns and gardens and planted trees mainly on the eastern side of the campus, the extensively managed open spaces (natural grassland) mainly in the middle and to the west and the intensively managed sports fields. This study also contributes to the building up of scientific knowledge about the Grassland Biome. Recommendations are made as to how the vegetation on the campus and in other increasingly urbanizing areas of the Grassland Biome may be managed in a manner that is ecologically sound and that meets amenity needs as well.
Afrikaans: Die doel van hierdie studie was om die natuurlike plant gemeenskappe van die Universiteit van die Vrystaat se hoofkampus in Bloemfontein te ondersoek, te klassifiseer, te beskryf en ekologies te interpreteer. vii ‘n Verdere doel was om die stedelike biotoop karteringsmetode op die kampus toe te pas ten einde ekologiese inligting vir besluitnemers op die kampus, in ‘n maklik verstaanbare vorm, beskikbaar te stel. Die fitososiologiese studie was gebaseer op Braun-Blanquet prosedures. ‘n Total van 222 reléves is deur die klassifikasie gebruik deur van TURBOVEG, TWINSPAN en MEGATAB gebruik te maak. Ordening deur middel van die DECORANA ordeningsalgoritme was ook op die floristiese data toegepas om te bepaal wat die verwantskappe tussen die plantgemeenskappe en die betrokke omgewingsfaktore, is. Die plantegroei is in 5 Hoof Grasveld-gemeenskappe en 2 Hoof Vleiland-gemeenskappe geklassifiseer. Al die eenhede en sub-eenhede is ekologies geïnterpreteer en beskryf. Biotoop-kartering van die UV kampus is gedoen deur middel van ‘n gewysigde Duitse metode. Hierdie metode is aangepas vir Suid Afrikaanse toestande en is vir die eerste keer in Potchefstroom gebruik. Die biotoop-kaart van die UV-kampus toon dat meeste van die ruimte op die kampus deur drie biotoop-tipes beslaan word. Hulle is beboude gebied met tuine, aangeplante bome en grasperke (oos-kampus), uitgebreide oop areas wat deur natuurlike veld beslaan word, ook intensief-bestuurde sportvelde (weskampus). Hierdie studie dra by tot die steeds uitbreidende wetenskaplike kennis van die Grasveld Bioom. Aanbevelings word gemaak om die natuurlike plantegroei op die kampus op ‘n ekologies verantwoordelike manier te bestuur en om die intrinsieke waarde van die veld te behou.
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Braun-Blanquet, Urban ecology, Plant communities, Biotope mapping, Grassland, Vegetation surveys -- South Africa -- Bloemfontein, Grassland ecology -- South Africa -- Bloemfontein, Dissertation (M.Sc. (Botany))--University of the Free State,2007, Classification
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