'n Evaluering van sommige plantkundige faktore wat kleinwild-digthede in die Weskus Nasionale Park beinvloed

[摘要] ENGLISH ABSTRACT:A map of the different plant communities in a part of the West Coast National Park (WCNP) ispresented. The approach of the Zurich-Montpellier school is used for the phytosociologicalstudies. Thirty plant communities are described and related to environmental factors. One newalliance, two sub-alliances, seventeen associations, seven sub-associations and three variations aredescribed. It is suggested that the Willdenowio -- Diospyretum austro-africanae is raised toalliance level and the Eucleo -- lschyrolepion eleocharidis lowered to sub-alliance level. Thedifferent floristic groups in which the plant communities fell were Strandveld, Proto-fynbos,marsh, strand and ecotones between Strandveld and Fynbos.A further extensive survey was conducted in the Postberg Nature Reserve (PNR), which formspart of the West Coast National Park, to determine the possible cause of decline in small antelopenumbers (duiker, grysbok and steenbok). The potential production of the vegetation of thePostberg Nature Reserve is about 561.64 kg DM/ha/yr. Rumen analyses of the small antelopeswere performed in an attempt to assess the possible relationship between plants and animals. It isfound that the small antelope utilizes a big spectrum of plants.Different plant communities were structurally examined and it is proved that the steenbok arebolder than the other two small antelope and are prepared to feed in areas having a lower plantdensity. Duiker and grysbok preferentially prefer plant communities taller than 60 cm.KEYWORDSBraun-Blanquet, community structure, distribution, Fynbos Biome, habitat, plant communities,Raphicerus campestris, Raphicerus melanotis, Strandveld, Sylvicapra grimmia.

[发布机构] Stellenbosch University