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Timber Harvesting in South Africa—Past, Present, Future
Item type: Journal Article • Journal: South African Forestry Journal • Authors: P.W. Warkotsch --- Faculty of Forestry,After a short description of South African timber harvesting practices in the past, the present situation in terms of machine population and the current harvesting and extraction methods is discussed in more detail. -
Cable Yarding in Southern Africa: An Analysis of its Productivity and Possible Procedure for its Improvement
Item type: Journal Article • Journal: South African Forestry Journal • Authors: R.M. de Laborde --- Institute for Commercial Forestry Research, South AfricaThe demand for timber in southern Africa is increasing and this is resulting in the afforestation of areas which require cable yarding when harvested. The demand for cable yarders, essentially fixed skylines, is therefore increasing rapidly. Stress is being placed... -
The Impact of Harvesting Operations on Timber Quality: Causes and Remedies
Item type: Journal Article • Journal: South African Forestry Journal • Authors: Walter Warkotsch --- Forest Engineering Technology, Faculty of Forestry,Forests are devastated daily to satisfy the world's timber demands. Tropical forests throughout the world are exploited and endangered. An obligation therefore exists to avoid damage to timber and minimise waste wherever possible. -
The effect of planting density on the wood quality of South African-grown Eucalyptus grandis
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: F.S. MalanThis paper presents the results of a wood property and sawn board quality study performed on disc samples and sawlogs taken from a 23-year-old Eucalyptus grandis Nelder 1a spacing trial at J.D.M. Keet plantation near Tzaneen. Ten trees from each... -
Provincial road condition and round wood timber transport in South Africa
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: StephenJ. Nicholls ReinoE. Pulkki PierreA. AckermanThe context of the study is the concern over declining provincial road conditions due to insufficient government funding for road maintenance. The roads are used by a wide variety of commercial and private interests that contribute a broad range of... -
Survey of Indigenous Tree Uses and Preferences in the Eastern Cape Province
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: H. van Eck --- Faculty of Forestry, South Africa C. Ham --- Faculty of Forestry, South Africa G. van Wyk --- Faculty of Forestry, South AfricaA survey was undertaken in four areas in the Eastern Cape Province to establish indigenous tree use patterns and preferences. Through informal interviews a list was compiled of the 25 most popular indigenous trees being used for their fruit and... -
The minimum required yield for profitable sawtimber production from Pin us patula in the escarpment area of Mpumalanga
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: M.P. Falcão --- Faculty of Agronomy and Forestry Engineering, Mozambique H. J.E. Uys --- Department of Forest Science, South AfricaIn a recent study (1998) the minimum required yield for profitable sawtimber production from Pinus patula in the escarpment area of Mpumalanga was established. Net Present Value was used as financial profitability criterion. All cost components were 1996 costs (the... -
Certification: Situation analysis of private timber growers in South Africa
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: Cori Ham --- Faculty of Agricultural and Forestry Sciences,Forest certification has become an important aspect to consider in forestry. The South African forestry industry has adopted to a system of forest certification fairly easily. The private timber growers are also expected to implement certification, but can they adapt... -
Extraction of non-timber forest products as a coping strategy for HIV/AIDS-afflicted rural households in south-eastern Zimbabwe
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: MunyaradziJ Mutenje --- School of Agricultural Sciences and Agribusiness, South Africa GeraldF Ortmann --- School of Agricultural Sciences and Agribusiness, South Africa StuartRD Ferrer --- School of Agricultural Sciences and Agribusiness, South AfricaThis article examines the role of the extraction of non-timber forest products (NTFPs) as a coping strategy in response to HIV/AIDS-related economic shocks among rural households in the semi-arid Sengwe communal lands in south-eastern Zimbabwe. Using panel data for 200... -
The significance of gathering wild orchid tubers for orphan household livelihoods in a context of HIV/AIDS in Tanzania
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: JoyceFX Challe --- Department of Research and Training, Mikocheni Agricultural Institute, Tanzania Anke Niehof --- Sociology of Consumers and Households Group, The Netherlands PaulC Struik --- Centre for Crop System Analysis, The NetherlandsWe investigated the role of gathering and selling the edible tubers of wild orchids by children orphaned by AIDS as one of their livelihood strategies, through a household survey administered to 152 households in three villages in the Southern Highlands... -
Some Effects of Pruning on Growth and Timber Quality of Eucalyptus grandis in Zululand
Item type: Journal Article • Journal: South African Forestry Journal • Authors: B.V. Bredenkamp --- Natal Forestry Research Centre, F.S. Malan --- , W.E. Conradle --- ,A pruning trial in Eucalyptus grandis with six pruning regimes and a control displayed negligible effects on growth rates. Recovery after removal of up to 50% of the live crown was rapid. Gains in knot-free timber were insignificantly small while... -
Pre-commercial Thinning of Eucalyptus grandis for Mining Timber Production
Item type: Journal Article • Journal: South African Forestry Journal • Authors: B.V. Bredenkamp --- Natal Forestry Research Centre, C.J. Schutz --- Natal Forestry Research Centre,Eucalyptus grandis was thinned before a commercial yield could be expected. in an attempt to narrow the distribution of diameters and so raise the proportion of timber within mining timber standards. It IS shown that a mid-rotation thinning will not... -
Knowledge on Sclerocarya birrea subsp. caffra with emphasis on its importance as a non-timber forest product in South and southern Mrica: A Summary
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: SheonaE. Shackleton --- , South Africa CharlieM. Shackleton --- , South Africa Tony Cunningham --- , Australia Cyril Lombard --- , Namibia CarolineA. Sullivan --- , England ThiambiR. Netshiluvhi --- Environmentek, CSIR, South AfricaSclerocarya birrea (marula) is a widespread species throughout the semi-arid, deciduous savannas of much of sub-Saharan Africa. It is widely used by rural populations in most countries in which it is found. It has multiple uses, including the fruits, kernels,... -
Knowledge on Sclerocarya birrea subsp. caffra with emphasis on its importance as a non-timber forest product in South and southern Africa: A Summary
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: Rachel Wynberg --- Graduate School of Environmental Studies, South Africa Jill Cribbins --- , South Africa Roger Leakey --- Agroforestry and Novel Crops Unit, School of Tropical Biology, Australia Cyril Lombard --- CRIAA SA-DC, Namibia Myles Mander --- , South Africa Sheona Shackleton --- Environmental Science Programme, South Africa Caroline Sullivan --- Centre for Ecology and Hydrology, Crownmarsh Gifford, EnglandSclerocarya birrea (marula) forms an integral part of the diet, tradition and culture of rural communities in southern Africa and also is central to various commercial initiatives. This second part of a review on the species provides an overview of... -
Determination of land and tree values of hybrid poplar plantations: A case study for Turkey
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: Sait Engindeniz --- The University of Ege, Faculty of Agriculture, Turkey Aysen Olgun --- The University of Ege, Faculty of Agriculture, TurkeyValuation of poplar plantations is important in condemnation, taxation, loan, insurance, inheritance, and purchase-sale cases. In general, for the appraisal ofland value of poplar plantations, sales comparison and income capitalization approaches can be used. In appraisal of tree values sales... -
A breeding strategy for Acacia mearnsii (black wattle) in South Africa
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: R. W. Dunlop --- , R. D. Bairnes --- , UK K. M. Nixon --- , S. F. Hagedorn --- ,The black wattle breeding programme that has served the wattle bark industry ofSouth Africa for the past five decades putlittleemphasis on improvingthe yield and quality ofthe timber, as timberwas not the product ofimportance. Today the timber is as important, ifnot... -
Pinus saw timber tree optimisation in South Africa: a comparison of mechanised tree optimisation (harvester/processor) versus current manual methods
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: John Eggers --- , South Africa Andrew McEwan --- , South Africa Beatrice Conradie --- , South AfricaBoth Cut to Length (CTL) and Full Tree/Tree Length (FT/TL) ground-based systems are used to harvest pine in South Africa. The fully mechanised CTL system is the most recently introduced system in South Africa. One of the reasons for the... -
Fibre volume losses of eight softwood clearfell harvesting systems in South Africa
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: P Ackerman --- Department of Forest and Wood Science, South Africa R Pulkki --- Department of Forest and Wood Science, South AfricaA study of both fibre volume loss and related opportunity cost was performed across the South African softwood sawtimber industry to gain information on the actual utilisation of useful fibre and potential loss or gain of opportunity in terms of... -
Response of Ocotea bullata, Curtisia dentata and Rapanea melanophloeos to medicinal bark stripping in the southern Cape, South Africa: implications for sustainable use
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: WJ Vermeulen --- Conservation Services, South Africa CJ Geldenhuys --- Department of Forest and Wood Science, South Africa KJ Esler --- Department of Conservation Ecology, South AfricaTree bark is commonly used for traditional medicine in southern Africa and further afield. Increasing demand and commercialisation have resulted in the overexploitation of many species, posing a major challenge to forest managers to develop mechanisms for sustainable resource use... -
Variation in strength, stiffness and related wood properties in young South African-grown Pinus patula
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: C Brand Wessels --- Department of Forest and Wood Science, South Africa Francois S Malan --- Komatiland Forests, South Africa Daan G Nel --- Centre for Statistical Consultation, South Africa Tim Rypstra --- Department of Forest and Wood Science, South AfricaThe objective of this study was to examine the variation in and intercorrelation among wood properties determining the suitability of 16- to 20-year-old South African-grown Pinus patula trees for structural timber. A total of 1 112 sawn boards from 340... -
The ecology and management of the Miombo woodlands for sustainable livelihoods in southern Africa: the case for non-timber forest products
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: PW Chirwa S Syampungani CJ GeldenhuysThere is new and increasing emphasis on the contribution of non-timber forest products (NTFPs) to improving the livelihoods of rural communities and therefore the need for sustainable management of forest ecosystems of the Miombo woodlands to ensure the continued availability... -
Damage to foliage and stems caused by fungal pathogens in young eucalypt plantations in Zambia
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: A Muimba-Kankolongo --- School of Natural Resources, Zambia IN Nawa --- School of Agricultural Sciences, Zambia J Roux --- Department of Microbiology and Plant Pathology, Forestry and Agricultural Biotechnology Institute, South Africa P Ng'andwe --- School of Natural Resources, ZambiaPlantations consisting of non-native tree species were established on the Copperbelt of Zambia to supplement timber supply from natural forests and to meet the increasing demand of round wood and fuel wood for the copper mines. In early 2004, a... -
Assessing the utility of ALOS PALSAR and SPOT 4 to predict timber volumes in even-aged Eucalyptus plantations located in Zululand, South Africa
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Riyad Ismail --- Sappi Forests, South Africa Horst Kassier --- Sappi Forests, South Africa Morries Chauke --- Sappi Forests, South Africa Francesco Holecz --- Sarmap SA, Switzerland Nico Hattingh --- Sappi Forests, South AfricaIn commercial forestry, regular terrestrial enumerations of the growing stock are required for the valuation, sustain-able management and planning of current and future timber supplies. In this study we examined whether the combination of synthetic aperture radar (ALOS PALSAR) and... -
Socio-economic factors influencing marketing of non-timber forest products in tropical lowland rainforests of south-western Nigeria
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Tajudeen O Amusa --- Department of Forest Resources Management, Nigeria S Oladunni Jimoh --- Department of Forest Resources Management, Nigeria Ismail O Azeez --- Department of Forest Resources Management, NigeriaA number of factors persist to constrain the non-timber forest products (NTFPs) market and, by extension, its potential to contribute meaningfully to livelihood development and poverty reduction objectives. To better utilise the potential of NTFPs, it is important to have... -
Allometric models to estimate foliage biomass of Tamarindus indica in Burkina Faso
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Loyapin Bondé --- Laboratory of Plant Biology and Ecology, Burkina Faso Moussa Ganamé --- Laboratory of Plant Biology and Ecology, Burkina Faso Oumarou Ouédraogo --- Laboratory of Plant Biology and Ecology, Burkina Faso Blandine MI Nacoulma --- Laboratory of Plant Biology and Ecology, Burkina Faso Adjima Thiombiano --- Laboratory of Plant Biology and Ecology, Burkina Faso Joseph I Boussim --- Laboratory of Plant Biology and Ecology, Burkina FasoTamarindus indica L. is a multi-purpose tropical species. In West Africa the local people use its leaves daily as a source of food, medicine and income. To prevent the over-exploitation of this species for its use for non-timber forest products,... -
Sawn-timber and kraft pulp properties of Pinus elliottii × Pinus caribaea var. hondurensis and Pinus patula × Pinus tecunumanii hybrids and their parental species
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: André Nel --- Shaw Research Centre, Sappi Forests Research, South Africa Francois S Malan --- Retired, South Africa Ron Braunstein --- Sappi Technology Centre, South Africa C Brand Wessels --- Department of Forest and Wood Science, South Africa Arnulf Kanzler --- Shaw Research Centre, Sappi Forests Research, South AfricaA study was undertaken to evaluate the quality of the timber produced by Pinus elliottii × Pinus caribaea var. hondurensis (PECH) and the Pinus patula × Pinus tecunumanii low elevation (PPTL) and high elevation (PPTH) hybrids and their parent species... -
Effect of tree spacing on growth and wood density of 38-year-old Cariniana legalis trees in Brazil
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Ivanka Rosada de Oliveira --- Departamento de Ciências Florestais, Brazil Matheus Peres Chagas --- Setor de Engenharia Florestal, Brazil Jean-Pierre Bouillet --- Departamento de Ciências Florestais, Brazil Eduardo Luiz Longui --- Divisão de Dasonomia, Brazil Israel Luiz de Lima --- Divisão de Dasonomia, Brazil Bruno Bordron --- Departamento de Ciências Florestais, Brazil Angel Boschiero Ferreira --- Departamento de Ciências Florestais, Brazil Mario Tommasiello Filho --- Departamento de Ciências Florestais, BrazilAverage wood density of 38-year-old Cariniana legalis (Mart.) Kuntze, a Brazilian native forest species, was found to increase with faster growth and lower stocking, while decreasing from pith to bark. A complete randomised block design was planted with five blocks... -
A decision support tool approach based on the Electre TRI-B method for the valorisation of tropical timbers from the Congo Basin: an application for glulam products
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: René Oum Lissouck --- Department of Civil Engineering and Wood Construction, Cameroon Régis Pommier --- University of Bordeaux, France Franck Taillandier --- University of Bordeaux, France Jean K Mvogo --- Laboratory of Civil Engineering and Mechanics, National Advanced School of Engineering, Cameroon Denys Breysse --- University of Bordeaux, France Louis M Ayina Ohandja --- Laboratory of Civil Engineering and Mechanics, National Advanced School of Engineering, CameroonAn alternative approach to the formal management strategy of tropical timber species from the Congo Basin was investigated. It focused on the development of glulam, with an aim to specify a decision support model for the valorisation of tropical timber... -
Comparison of socio-economic and ecological benefits of bamboo and trees: the perspectives of local communities in south-western Ghana
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Richard Osei --- Earth and Life Institute, Belgium Michael Ansong --- Department of Silviculture and Forest Management, Ghana Stefan Zerbe --- Faculty of Science and Technology, ItalyNatural forests are disappearing in many tropical countries, resulting in loss of biodiversity and erosion of forest-dependent livelihoods. The maintenance and restoration of forests as well as a search for alternative natural resources that can concurrently improve the environment and... -
Conceptual decision-making framework for the sustainable harvesting of forest and woodland species for medicinal tree bark in southern Africa
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: WJ Vermeulen --- , South Africa CJ Geldenhuys --- , South Africa KJ Esler --- , South Africa S Syampungani --- , Zambia G Meke --- , MalawiTree bark is widely used in traditional medicine in southern Africa. The growing demand for medicinal bark requires scientifically sound harvest systems for sustainable use. A conceptual framework and decision matrix are presented to aid forest managers in selecting the... -
Debarking damage by alien Pallas’s squirrel, Callosciurus erythraeus, in Argentina and its effects on tree growth
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Paula A Pedreira --- , Argentina Eduardo A Penon --- , Argentina Mariela Borgnia --- , ArgentinaIntroduced squirrels threaten forest ecosystems by debarking, resulting in economic losses to the timber industry and additional damage mitigation and pest control costs. The Pallas’s squirrel, also called the red-bellied squirrel. (Callosciurus erythraeus), originally from Asia, is the first squirrel... -
Models for predicting slenderness coefficient from stump diameter for Tectona grandis stands in south-western Nigeria
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Onyekachi Chukwu --- , NigeriaIllegal logging has continued to be a major cause of depletion of the tropical forests in developing countries. However, empirical means of estimating the growth characteristics of a removed tree, which will facilitate the conviction of illegal loggers in judicial... -
The effect of adjacent vegetation on fire severity in Afrotemperate forest along the southern Cape coast of South Africa
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Brandon Giddey --- , South Africa Johan A Baard --- , South Africa Lufuno Vhengani --- , South Africa Tineke Kraaij --- , South AfricaRecently two large wildfires (around the towns of Knysna in 2017 and George in 2018) jointly burnt over 80 000 ha in the southern Cape, South Africa. Here, patches of closed-canopy Afrotemperate forest occur within a matrix of fire-prone (native)... -
The impact of Eucalyptus plantations on herpetofaunal diversity, Maputo National Park, Mozambique
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: PR Jordaan --- Tshwane University of Technology, South Africa A Wilken --- University of Pretoria, South Africa X Combrink --- Tshwane University of Technology, South AfricaExotic afforestation has proven detrimental to biodiversity in general, however only a few studies documenting the impact of timber plantations on herpetofaunal diversity have been published within a southern African context. To determine if variations in herpetofaunal species assemblages could... -
The economic contribution of wild edible mushrooms as a non-timber forest product in the Copperbelt province of Zambia
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Anthony Sinyangwe --- Seoul National University, Republic of Korea Dayoung Kim --- Seoul National University, Republic of Korea Gihyun Park --- Seoul National University, Republic of Korea Gayoung Won --- Seoul National University, Republic of Korea Hyungsik Jeong --- Seoul National University, Republic of Korea Joongwon You --- Seoul National University, Republic of Korea Hee Han --- Seoul National University, Republic of Korea Joosang Chung --- Seoul National University, Republic of KoreaWild edible mushrooms (WEMs) are an important non-timber forest product (NTFP) that contributes significantly to rural livelihoods in many parts of the world. However, information on their utilisation, economic importance and the factors affecting their availability is often limited. This... -
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...