Search
Search results for
We found
32 results for you
-
Characterisation of alkaline tailings from a lead/zinc mine in South Africa and evaluation of their revegetation potential using five indigenous grass species
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: LouisW Titshall --- School of Agriculture, Earth and Environmental Sciences, South Africa JeffreyC Hughes --- School of Agriculture, Earth and Environmental Sciences, South Africa H Christopher Bester --- School of Agriculture, Earth and Environmental Sciences, South AfricaTailings from a lead/zinc (Pb/Zn) mine were characterised and their revegetation potential investigated under glasshouse conditions using five grass species with three rates of inorganic fertiliser. The tailings were alkaline with low nutrient concentrations but high total and extractable Zn... -
Soil and vegetation changes across a Succulent Karoo grazing gradient
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: P C Beukes F EllisThis study describes soil and vegetation changes radiating out from a central watering point on a livestock farm in the Succulent Ceres Karoo (Tanqua). The aim was to identify possible relationships between long-term grazing pressure, and soil and vegetation properties... -
Plant invaders, global change and landscape restoration
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: DA Pyke ST KnickModifications in land uses, technology, transportation and biogeochemical cycles currently influence the spread of organisms by reducing the barriers that once restricted their movements. We provide an overview of the spatial and temporal extent for agents of environmental change (land... -
Silviculture and Genetics of Pinus kesiya for Planting Degraded Pasture Land
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: J.A. Wright --- , USA N. Isaza --- , USAThe conifer species, Pinus kesiya Royle ex Gordon, is an important part of the ecology within the indigenous range of South-east Asia as well as in sustainably managed plantations in a number of countries. Planting with the species in Colombia... -
Impact of drain water on water quality and eutrophication status of Lake Burullus, Egypt, a southern Mediterranean lagoon
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: EM Ali --- Department of Environmental Sciences, EgyptThe ecological and biological status of Lake Burullus was examined in 2006 to determine its water quality and eutrophication status in response to the quality and quantity of drain water entering it. The lake suffers from excessive nutrient concentrations. Chlorophyll... -
Low light availability affects leaf gas exchange, growth and survival of Euterpe edulis seedlings transplanted into the understory of an anthropic tropical rainforest
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: MLS dos Santos --- Departamento de Ciências Agrárias e Ambientais, Brazil S França --- Departamento de Ciências Agrárias e Ambientais, Brazil FP Gomes --- Departamento de Ciências Biológicas, Brazil JL do Nascimento --- Departamento de Ciências Agrárias e Ambientais, Brazil L dos Anjos Silva --- Departamento de Ciências Biológicas, Brazil MS Mielke --- Departamento de Ciências Biológicas, BrazilEuterpe edulis Mart. (Arecaceae) is a threatened palm tree of the Brazilian Atlantic Rainforest understory with fundamental importance for the restoration of degraded forest environments. We assessed the leaf gas exchange, growth and survival of E. edulis seedlings transplanted at... -
Restoration of oiled African penguins Spheniscus demersus a decade after the Apollo Sea spill
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: AC Wolfaardt LG Underhill R Altwegg J VisagieThe bulk ore carrier Apollo Sea sank south-west of Dassen Island off western South Africa in June 1994, oiling approximately 10 000 African penguins Spheniscus demersus, most of which were collected from Dassen Island. A total of 4 076 de-oiled... -
Review of the rescue, rehabilitation and restoration of oiled seabirds in South Africa, especially African penguins Spheniscus demersus and Cape gannets Morus capensis, 1983–2005
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: AC Wolfaardt AJ Williams LG Underhill RJM Crawford PA WhittingtonSouth Africa is a global hotspot for oil pollution. The regional oiled seabird cleaning centre, the South African Foundation for the Conservation of Coastal Birds (SANCCOB), has handled over 50 000 seabirds from its inception in 1968 until 2005. The... -
Vegetative traits predict grass species' invasiveness and the invasibility of restored grassland
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: RWS Fynn --- School of Biological and Conservation Sciences, South Africa PD Wragg --- School of Biological and Conservation Sciences, South Africa CD Morris --- Agricultural Research Council, South Africa KP Kirkman --- School of Biological and Conservation Sciences, South Africa J Naiken --- School of Biological and Conservation Sciences, South AfricaUnderstanding how grass species' traits relate to their invasiveness and the invasibility of their monocultures can inform restoration of diverse grassland. We measured vegetative traits for 18 bunch grass species local to Pietermaritzburg (KwaZulu-Natal, South Africa) and measured their competitive... -
Response of Colophospermum mopane to different intensities of tree thinning in the Mopane Bushveld of southern Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Nico Smit --- Animal, Wildlife and Grassland Sciences, South AfricaIn the Mopane Bushveld, Colophospermum mopane is viewed as a threat due to its ability to suppress the herbaceous layer. The objective of this study was to investigate the re-establishment of C. mopane over a 19-year period on seven plots... -
Reef fishes recruited at midwater coral nurseries consume biofouling and reduce cleaning time in Seychelles, Indian Ocean
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: S Frias-Torres --- Nature Seychelles, Republic of Seychelles H Goehlich --- Nature Seychelles, Republic of Seychelles C Reveret --- Nature Seychelles, Republic of Seychelles PH Montoya-Maya --- Nature Seychelles, Republic of SeychellesIn coral reef restoration, coral gardening involves rearing coral fragments in underwater nurseries prior to transplantation. These nurseries become fish-aggregating devices and attract biofouling. We hypothesised that: (1) the presence of corals at a nursery is critical to recruit fish... -
Effects of smoke, ash and heat shock on seed germination of seven species from Central Zagros rangelands in the semi-arid region of Iran
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Ali Asghar Naghipour --- Department of Natural Resources, Iran Hossein Bashari --- Department of Natural Resources, Iran Seyed Jamaleddin Khajeddin --- Department of Natural Resources, Iran Pejman Tahmasebi --- Faculty of Natural Resources and Earth Science, Iran Majid Iravani --- Department of Natural Resources, IranFire products have been widely identified as germination cues for a number of species from both fire-prone and fire-free ecosystems. However, there is uncertainty about the effects of fire products on seed germination of semi-arid rangeland species. We examined the... -
Reflooding the Faguibine floodplain system, northern Mali: potential benefits and challenges
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: O Hamerlynck --- Kenya Wetlands Biodiversity Research Team, Kenya SA Moulaye Zeine --- Global Monitoring, Mauritania JY Mutua --- Kenya Wetlands Biodiversity Research Team, Kenya LV Mukhwana --- Kenya Wetlands Biodiversity Research Team, Kenya M Yéna --- Direction Nationale de l’Hydraulique du Mali, MaliThe Faguibine system, northern Mali, consists of a series of interconnected floodplains of which the flooded surface area declined from about 1 000 km² in the late 19th century to only some 90 km² in 2010. Flood extent depends on... -
Soil seed bank depletion as a mechanism of Lantana camara L. invasion
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Sheunesu Ruwanza --- Department of Environmental Science, South AfricaLantana camara is an invasive plant in South Africa with a wide range of impacts. This study assessed the impact of L. camara invasion on the soil seed bank. The study asked the question, does species density and diversity of... -
Restoration of degraded ecosystems in the Afromontane highlands of Ethiopia: comparison of plantations and natural regeneration
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Abrham Abiyu --- Amhara Agricultural Research Institute, Ethiopia Demel Teketay --- Department of Crop Science and Production, Botswana Gerhard Glatzel --- Institute of Forest Ecology, University of Natural Resources and Life Sciences, Austria Raf Aerts --- Ecology, Evolution and Biodiversity Conservation Section, Belgium Georg Gratzer --- Institute of Forest Ecology, University of Natural Resources and Life Sciences, AustriaThe scale of deforestation in sub-Saharan Africa underscores the need for forest restoration. Information is scarce for evidence-based restoration options. Sown Senna didymobotrya, planted Ficus thonningii cuttings, sown S. didymobotrya and planted F. thonningii combined, and previously occurring native non-browse... -
Overview of restoration and management practices in the degraded landscapes of the Sahelian and dryland forests and woodlands of East and southern Africa
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Paxie W Chirwa --- Forest Science Postgraduate Programme, Department of Plant and Soil Sciences, South Africa Larwanou Mahamane --- African Forest Forum, c/o World Agroforestry Centre (ICRAF), KenyaThe highest deforestation and forest degradation rates in Africa occur in the dry forests and woodlands where pressure for land is increasing, poverty is rampant, livelihood options are few and climate change effects are severe. This paper examines factors that... -
A comparative analysis of the morphology and nutritive value of five South African native grass species grown under controlled conditions
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Khuliso E Ravhuhali --- Department of Animal Science, School of Agricultural Sciences, Faculty of Natural and Agricultural Sciences, South Africa Victor Mlambo --- School of Agricultural Sciences, Faculty of Agriculture and Natural Sciences, South Africa Tefera S Beyene --- Department of Livestock and Pasture Science, South Africa Lobina G Palamuleni --- Department of Geography and Remote Sensing, School of Environmental and Health Sciences, Faculty of Agriculture, South AfricaThe comparative growth habits and nutritive value of native grass species of South Africa are largely unknown despite the utility of this information in rangeland restoration efforts. This article presents a comparative characterisation of the morphology, chemical composition and in... -
Seed mix type but not planting method or seed priming affect grassland restoration outcomes: a greenhouse trial
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Stuart Demmer --- School of Life Sciences, South Africa Michelle J Tedder --- School of Life Sciences, South Africa Kevin P Kirkman --- School of Life Sciences, South AfricaCommercial seed mixes and various mechanical planting methods have been implemented to overcome barriers to successful restoration of degraded grasslands but their effectiveness in aiding the restoration process has been understudied. Harvested seed must be cleaned of chaff to allow... -
The ancestral land debate prior to and during Namibia’s Second National Land Conference: the redistribution-recognition dilemma
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Phanuel Kaapama --- Political and Administrative Studies, NamibiaWith the 2007 adoption of the United Nations Declaration on the Rights of Indigenous People, the notion of ancestral land rights has gained greater global currency. However, this international legal instrument falls short of proffering an unambiguous definition of an... -
Restoration of Lake St Lucia, the largest estuary in South Africa: historical perceptions, exploitation, management and recent policies
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: NT Forbes --- Marine and Estuarine Research, Hyper-by-the-Sea, South Africa AT Forbes --- Marine and Estuarine Research, Hyper-by-the-Sea, South Africa B James --- iSimangaliso Wetland Park Authority, Dredger Harbour, South AfricaRestoration of estuarine function to the Lake St Lucia system, the largest estuary in South Africa, was initiated in 2010. Significant change began with the reversal of a mouth management policy that was adopted in 1952 and maintained for the... -
Assessment of plant species composition and natural regeneration in abandoned settlements in the lower montane forest of Kilimanjaro National Park, Tanzania
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Imani Abinery Kikoti --- , Tanzania Cosmas Mligo --- , Tanzania Henry Joseph Ndangalasi --- , TanzaniaAnthropogenic modification of montane forests to other land uses has significant effects on native vegetation and the ecological functions of plant communities, such as in the forests of Mount Kilimanjaro. This study was carried out in Kilimanjaro National Park at... -
Investigating the potential for saltpan restoration for the provision of multiple ecosystem services
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Johan Wasserman --- , South Africa Janine B Adams --- , South Africa Daniel A Lemley --- , South AfricaSaltpans are increasingly being abandoned around the world, leading to the loss of ecosystem services provided by these unique semi-natural wetlands. The desertion of a saltpan at the Swartkops Estuary, South Africa has left behind a large area of desiccated... -
Restoration of South African estuaries: successes, failures and the way forward
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: L Claassens --- Rhodes University, South Africa JB Adams --- Institute for Coastal & Marine Research, Nelson Mandela University, South Africa NM de Villiers --- Rhodes University, South Africa J Wasserman --- Institute for Coastal & Marine Research, Nelson Mandela University, South Africa AK Whitfield --- South African Institute for Aquatic Biodiversity (SAIAB), South AfricaMajor threats to South African estuaries include freshwater flow alterations, urbanisation, habitat transformation, deteriorating water quality, increased biological invasions and resource over-exploitation. Although South African estuary restoration is in its infancy, important lessons have been learnt through past efforts undertaken... -
The diversity of epigeal insects after the application of the brush packing restoration method following bush-encroachment control in South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: A Marquart --- North-West University, South Africa OB Sikwane --- North-West University, South Africa K Kellner --- North-West University, South AfricaEvidently, bush encroachment caused by factors, such as overgrazing, results in a change in savanna ecosystems. This shift in vegetation structure can affect many factors, including insect fauna. Epigeal arthropods occupy smaller habitat patches and therefore respond to the effects... -
Do native grasses emerge and establish in areas rehabilitated using vetiver grass?
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Lindokuhle X Dlamini --- University of KwaZulu-Natal, South Africa Michelle J Tedder --- University of KwaZulu-Natal, South Africa Kevin P Kirkman --- University of KwaZulu-Natal, South AfricaSpecies-rich grasslands provide important ecosystem services, and in South Africa, approximately 40% of these grasslands are degraded. Vetiver grass (from India) is often used during rehabilitation efforts to restore soil function without a thorough understanding of the potential negative ecological... -
Eelgrass Zostera capensis populations in KwaZulu-Natal, South Africa, harbour distinct genomic signals despite limited geographical distance
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: SE Smit --- Stellenbosch University, South Africa R Henriques --- University of Pretoria, South Africa M Jackson --- Stellenbosch University, South Africa R Taylor --- , South Africa L Vivier --- University of Zululand, South Africa S von der Heyden --- Stellenbosch University, South AfricaSeagrasses are threatened by anthropogenic stressors and climate change, with numerous population declines reported. In South Africa, the eelgrass Zostera capensis is restricted to estuarine environments and has a disjunct distribution and declining status. With the majority of the distribution... -
Grazing capacity change on a small Mediterranean-type South African offshore island following the control of invasive alien European rabbits (Oryctolagus cuniculus)
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: --- University of KwaZulu-Natal, South Africa --- University of KwaZulu-Natal, South Africa --- Stellenbosch University, South AfricaInvasive alien species (IAS) are one of the most important factors driving extinction rates worldwide. Among the IAS, the impacts of introduced mammals on native biodiversity are most severe, with the European rabbit (Oryctolagus cuniculus) being the most problematic. Globally,... -
Digital soil mapping enables informed decision-making to conserve soils within protected areas
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: George M van Zijl --- North-West University, South Africa Johan van Tol --- University of the Free State, South AfricaProtected areas are regarded as pristine land, but often they require rehabilitation and effective management to prevent increased land degradation. Soil management should be based on soil maps, which are difficult to create in protected areas due to their large... -
Strong soil–vegetation relationship in riparian forests of the middle Rio Doce watershed, south-eastern Brazil
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Débora Oliveira Sousa --- Universidade Federal de Minas Gerais, Brazil Daniel Negreiros --- Universidade Federal de Minas Gerais, Brazil Letícia Ramos --- Universidade Federal de Minas Gerais, Brazil João Carlos Gomes Figueiredo --- Universidade Estadual de Montes Claros, Brazil Dario C Paiva --- Institute of Environment, Florida International University, USA Yumi Oki --- Universidade Federal de Minas Gerais, Brazil Wénita de Souza Justino --- Universidade Federal de Minas Gerais, Brazil Rubens Manoel dos Santos --- Universidade Federal de Lavras, Brazil Lorena Ashworth --- Universidade Federal de Minas Gerais, Brazil Yule Roberta Ferreira Nunes --- Universidade Estadual de Montes Claros, Brazil G Wilson Fernandes --- Universidade Federal de Minas Gerais, BrazilPhytosociological surveys and soil quality studies are relevant tools for the implementation of restoration programmes. This study aimed to characterise the vegetation of the tree and sapling strata in preserved riparian forests of the middle portion of the Rio Doce... -
African Journal of Range and Forage Science: paving the way to restoration in African rangelands
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Suzanne J Milton --- Wolwekraal Conservation and Research Organisation, South AfricaFor six decades the African Journal of Range & Forage Science and its precursors have contributed to understanding drivers of rangeland degradation and development of approaches for restoration of damage by grazing, mining and other forms of land use. Of... -
Overcoming seed dormancy of Pterocarpus angolensis DC. (umbila) and the evaluation of different substrates in seedling establishment
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Nilso Mangue --- Eduardo Mondlane University, Mozambique Milton Pinho --- Eduardo Mondlane University, Mozambique Énia Amós --- Eduardo Mondlane University, Mozambique Ciro Santana --- Eduardo Mondlane University, Mozambique Sónia Ventura Guilundo --- Eduardo Mondlane University, Mozambique Célia Martins --- Eduardo Mondlane University, Mozambique Orlando Quilambo --- Eduardo Mondlane University, MozambiquePterocarpus angolensis DC. is a premium timber from the Fabaceae family, found in the Miombo woodlands of sub-Saharan Africa. This study aimed at evaluating different scarification methods (chemical, mechanical and thermal) of seeds and the establishment of seedlings. To overcome... -
Seasonal consumption of Thamnochortus spicigerus (Restionaceae) by eland is associated with plant sex and nutrient status
Item type: Journal Article • Journal: African Zoology • Authors: Petro Botha --- Department of Botany and Zoology, Stellenbosch University, South Africa Bruce Anderson --- Department of Botany and Zoology, Stellenbosch University, South AfricaHistoric distributions of large herbivores in the Fynbos Biome remain poorly described and, despite ongoing reintroductions, their dietary strategies and forage selection in the Fynbos Biome are understudied. We monitored an introduction of eland into Cape Flats Dune Strandveld vegetation,...