Browsing Faculty of Natural and Agricultural Sciences by Author "Siebert, Stefan John"
Now showing items 1-20 of 22
-
Alliaceae: micromorphology and cytology of Prototulbaghia Siebertii, with notes on its taxonomic significance
Siebert, Stefan John (South African National Biodiversity Institute, 2011) -
Anatomical adaptations of Boerhavia L. and Commicarpus Standl. (Nyctaginaceae) for survival in arid environments of Namibia
Jordaan, Anine; Siebert, Stefan John; Struwig, Madeleen (Versita, 2011)Members of the Nyctaginaceae Jussieu. are distributed throughout southern Africa. Eight species of the family occur naturally in arid parts of Namibia. These species have acquired the ability to survive and reproduce in ... -
Anatomy of the Southern African Boerhavia and Commicarpus species (Nyctaginaceae)
Jordaan, Anine; Siebert, Stefan John; Struwig, Madeleen (Bangladesh Assosiation of Plant Taxonomists, 2011)The Nyctaginaceae in southern Africa is represented by five genera of which Boerhavia L. and Commicarpus Standl. are the most species-rich. Stem, leaf and anthocarp material was collected in situ and examined with a scanning ... -
Arecaceae : Livistona chinensis, a first record of a naturalized palm in South Africa
Siebert, Stefan John (National Botanical Institute, 2010) -
Diversity patterns of plants and arthropods in soybean agroecosystems in the grassland biome of South Africa
Janse van Rensburg, Paul Duvel; Siebert, Stefan John; Ellis, Suria; Van den Berg, Johnnie; Masehela, Tlou (Smujo, 2020)Soybean is widely cultivated in the grassland biome of South Africa (ca. 800 000 ha per annum). Yet the possible effects that large-scale cultivation of soybean has on biodiversity in adjacent habitat are not fully ... -
The extended occurrence of Maputaland Woody Grassland further south in KwaZulu-Natal, South Africa
Siebert, Frances; Siebert, Stefan John; Du Toit, Marié Joey (South African National Biodiversity Institute, 2011) -
Floristic analysis of domestic gardens in the Tlokwe City Municipality, South Africa
Cilliers, Sarel Stephanus; Lubbe, Catherina Susanna; Siebert, Stefan John (South African National Biodiversity Institute, 2011) -
Floristic analysis of semi-arid mountain ecosystems of the Griqualand West centre of plant endemism, Northern Cape, South Africa
Van Staden, Nanette; Siebert, Stefan John; Cilliers, Dirk Petrus; Wilsenach, Dian; Frisby, Arnold Walter (Society for Indonesian Biodiversity, 2020)The Griqualand West Centre (GWC) is one of 13 centres of plant endemism in South Africa. Despite its unique flora, it remains poorly conserved and studied. A recent study identified an extensive geographical core area for ... -
Myth as a biodiversity conservation strategy for the Vhavenda, South Africa
Siebert, Stefan John; Mutshinyalo, T.T. (Lamela Communications, 2010)The use of myth and superstition is an integral part of indigenous communities in Africa. It is used as a traditional approach for sustainable use and management of natural resources. The use of myths has significantly ... -
A new species of Pavetta (Rubiaceae) from South Africa
Siebert, Stefan John; Retief, Elizabeth; Van Wyk, Abraham E. (Missouri Botanical Garden Press, 2013)Pavetta glaucophylla Retief, S. J. Siebert & A. E. van Wyk, a new species of the Rubiaceae (Ixoroideae) from South Africa, is described and illustrated. A member of Pavetta L. subg. Pavetta, it has a restricted range and ... -
A new species of Polygala (Polygalaceae) from ultramafic soils in Sekhukhuneland, South Africa, with notes on its ecology
Siebert, Stefan John; Struwig, Madeleen; Retief, A.E.; Van Wyk, A.E. (Elsevier, 2010) -
Nyctaginaceae: notes on commicarpus in Southern Africa, including a new record for Namibia
Siebert, Stefan John; Struwig, Madeleen (South African National Biodiversity Institute, 2011) -
Patterns of plant species richness of temperate and tropical grassland in South Africa
Siebert, Stefan John (National Botanic Garden of Belgium and Royal Botanical Society of Belgium, 2011)Background and aims - The grasslands of southern Africa are threatened by habitat transformation and invasive alien species. However, the resultant plant species loss per unit area cannot be quantified, as the true richness ... -
Political legacy of South Africa affects the plant diversity patterns of urban domestic gardens along a socio-economic gradient
Cilliers, Sarel Stephanus; Lubbe, Catherina Susanna; Siebert, Stefan John (Academic Journals, 2010) -
Poultry manure enhances grass establishment at a quarry rehabilitation site in subtropical South Africa
Siebert, Stefan John; Maliba, Bheki G.; Zobolo, Alpheus M. (Academic Journals, 2011)The rehabilitation of a quarry was conducted with selected grass species in northern KwaZulu-Natal, South Africa. The seed cocktail applied contained Chloris gayana, Cynodon dactylon, Digitaria eriantha, Eragrostis curvula, ... -
Prototulbaghia siebertii
Condy, Gillian; Siebert, Stefan John; Van Wyk, A.E.; Vosa, C.G. (2011) -
Taxonomic status of Commicarpus fruticosus
Siebert, Stefan John; Struwig, Madeleen (National Biodiversity Institute, 2012) -
Traditional vegetables of northern KwaZulu-Natal, South Africa: has indigenous knowledge expanded the menu?
Siebert, Stefan John; Ntuli, N.R.; Zobolo, A.M.; Madakadze, R.M. (Academic journals, 2012)A survey was conducted on traditional vegetables in three districts of northern KwaZulu-Natal, South Africa. The objective was to determine which alien and native plant species were collected from the wild or cultivated ... -
The Tswana tshimo: A homegarden system of useful plants with a particular layout and function
Cilliers, Sarel Stephanus; Davoren, Elandrie; Lubbe, Catherina Susanna; Molebatsi, Lerato Yvonne; Siebert, Stefan John (Academic Journals, 2010) -
Urban ecology in Cape Town: South African comparisons and reflections
Cilliers, Sarel Stephanus; Siebert, Stefan John (Ecology & Society, 2012)Little urban ecological research has been done in South Africa. The papers in the Ecology and Society special feature Urban Ecological and Social-Ecological Research in the City of Cape Town make, therefore, an important ...