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Soil properties as influenced by cultivation of the aromatic shrub Artemisia afra
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.H. Hansen-Quartey --- Department of Agronomy, Republic of South Africa S.A. Materechera --- School of Agriculture, Republic of South Africa K. Nyamapfene --- , Republic of South AfricaThe herbaceous aromatic shrub African wormwood (Artemisia afra) is thought to be indigenous to the Eastern Cape region of South Africa. In the natural environment, wherever the plant grows, patches of hard, bare ground develop around the plant. To investigate... -
Defining function in rangelands of the Peddie district, Eastern Cape, using Landscape Function Analysis
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: AR Palmer FJ Killer AM Avis D TongwayPortions of natural rangeland in the Great Fish River Valley have been defined as degraded by several studies using vegetation analysis techniques. It was considered desirable that soil surface condition should also be described to provide an index of landscape... -
Brushpiles and dung as rehabilitation patches: effect on soil resources in degraded succulent thicket, Eastern Cape, South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: WB Todkill GIH Kerley EE CampbellA substantial portion of the Thicket Biome in the Eastern Cape has been transformed by overgrazing. An experimental rehabilitation study of degraded succulent thicket was initiated to determine whether increasing the patchiness on the landscape would result in an increase... -
Tebuthiuron residues remain active in soil for at least eight years in a semi-arid grassland, South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: JCO du Toit --- , South Africa KP Sekwadi --- , South AfricaThe non-selective, soil-applied herbicide tebuthiuron (1-(5-tert-butyl-1,3,4-thiadiazol-2-yl)-1,3-dimethylurea) is registered for the control of the indigenous encroacher shrub Seriphium plumosum (Asteraceae) in South Africa. The use of tebuthiuron on a farm in the Cymbopogon–Themeda veld type in the Zastron district of the... -
Fifteen years of annual Cape Parrot Poicephalus robustus censuses: current population trends and conservation contributions
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Colleen T Downs --- School of Life Sciences, South Africa Morgan Pfeiffer --- School of Life Sciences, South Africa Lorinda A Hart --- School of Life Sciences, South AfricaThe Cape Parrot Poicephalus robustus is endemic to South Africa and numbers have reportedly declined since the early 1900s. It is a forest specialist and food nomadic, moving between patches depending on fruit availability. This makes it difficult to estimate... -
Herbaceous biomass–species diversity relationships in nutrient hotspots of a semi-arid African riparian ecosystem
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Helga van Coller --- Unit of Environmental Sciences and Management, South Africa Frances Siebert --- Unit of Environmental Sciences and Management, South AfricaThe hump-back relationship between species diversity and productivity predicts highest species richness at intermediate levels of biomass, and low species numbers in least and most productive habitats. Sodic patches of semi-arid savannas are considered ‘nutrient hotspots’ by producing high-quality forage... -
The composition of the soil seedbank and its role in ecosystem dynamics and rehabilitation potential in the arid Tankwa Karoo Region, South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Manam WB Saaed --- Higher Institute of Agricultural Techniques, Libya Shayne M Jacobs --- Department of Conservation Ecology and Entomology, South Africa Mmoto L Masubelele --- Cape Research Centre, South Africa Igshaan Samuels --- Agricultural Research Council–Animal Production, c/o Department of Biodiversity and Conservation Biology, South Africa Lesego Khomo --- Department of Environmental Sciences, South Africa Yacoub M El-Barasi --- Botany Department, Faculty of Science, LibyaVery few soil seedbank studies have been conducted in South Africa, especially in arid rangelands. Insight into the soil seedbank could therefore improve assessment of rangeland dynamics and enhance rehabilitation efforts. This study aimed to characterise the soil seedbanks in... -
Assessing wetland functionality using soil surface indicators in Letšeng- la-Letsie wetland in Quthing District, Lesotho
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Nthuseng Kahlolo --- , Lesotho Botle Mapeshoane --- , Lesotho Peter Chatanga --- , Lesotho Lerato Seleteng-Kose --- , Lesotho Makoala V Marake --- , LesothoWetlands are globally valuable ecosystems as they provide many important services to the human society, yet the ecology of some of them is yet to be understood. This study assessed the functionality of Letšeng-la-Letsie wetland in Lesotho, using the Landscape...