Forestry & Wood Science
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ACKERMAN PA, PULKKI RE, ODHIAMBO BO. Comparison of Cable Skidding Productivity and Cost: Pre-Choking Mainline Versus Tagline Systems. Croatian Journal of Forest Engineering 2016; 37(2):261-268.

ACKERMAN SA, SEIFERT S, ACKERMAN PA, SEIFERT T. Mechanised Pine thinning Harvesting Simulation: Productivity and Cost Improvements as a Result of Changes in Planting Geometry. Croatian Journal of Forest Engineering 2016; 37(1):1-15.

AMIANDAMHEN SO, MEINCKEN M, TYHODA L. Magnesium based phosphate cement binder for composite panels: A response surface methodology for optimisation of processing variables in boards produced from agricultural and wood processing industrial residues. INDUSTRIAL CROPS AND PRODUCTS 2016; 94(2016):746-754.

CARDOSO AW, MIDGLEY JJ, HOFFMAN T, GELDENHUYS CJ. Temperate forest dynamics and carbon storage: a 26-year case study from Orange Kloof Forest, Cape Peninsula, South Africa. Southern Forests: A Journal of Forest Science (Southern Hemisphere Forestry Journal) 2016; 2070(2620):1-7.

CORRAL-RIVAS JJ, TORRES-ROJO JM, LUJAN-SOTO JE, NAVA-MIRANDA MG, AGUIRRE-CALDERÃ"N OA, VON GADOW K. Density and production in the natural forests of Durango/Mexico. ALLGEMEINE FORST UND JAGDZEITUNG 2016; 187(5/6):93-103.

COSOLA G, GRIGOLATO S, ACKERMAN PA, MONTEROTTI S, CAVALLI R. Carbon footprint of forest operations under different management regimes. Croatian Journal of Forest Engineering 2016; 37(1):201-217.

CRAFFORD PL, WESSELS CB. The potential of young, green finger-jointed Eucalyptus grandis lumber for roof trusses manufacturing. Southern Forests: A Journal of Forest Science (Southern Hemisphere Forestry Journal) 2016; 78(1):61-71.

GORGOSO-VARELA JJ, GARCIA VILLABRILLE JD, ROJO-ALBORECA A, VON GADOW K, ALVAREZ-GONZALEZ JG. Comparing Johnson's SBB, Weibull and Logit-Logistic bivariate distributions for modeling tree diameters and heights using copulas. Forest Systems 2016; 25(1):1-5.

GRIESS VC, UHDE B, HAM C, SEIFERT T. Product diversification in South Africa's commercial timber plantations: a way to mitigate investment risk. Southern Forests: A Journal of Forest Science (Southern Hemisphere Forestry Journal) 2016; 78(2):145-150.

HAINDUWA FN, HAM C, MEINCKEN M. Impact of fuelwood quality and quantity on the energy on the energy use of rural households in the Omusati Region, north-central Namibia. Southern Forests: A Journal of Forest Science (Southern Hemisphere Forestry Journal) 2016; 78(4):299-306.

LINDGREN O, SEIFERT T, DU PLESSIS A. Moisture content measurements in wood using dual-energy CT scanning â€" a feasibility study. Wood Material Science and Engineering 2016; 11(5):312-317.

MARAIS EM. Five new species of Pelargonium, section Hoarea (Geraniaceae), from the Western and Northern Cape Provinces of South Africa. SOUTH AFRICAN JOURNAL OF BOTANY 2016; 103:145-155.

MENSAH S, ASSOGBADJO AE, SALAKO VK, AGO EE, KAKAÏ RG. Accounting for tree spatial distribution in a comparison of plot sizes and shapes in dense forest and woodland in Benin (West Africa). AFRICAN JOURNAL OF ECOLOGY 2016; 54(1):87-94.

MENSAH S, KAKAÏ RG, SEIFERT T. Patterns of biomass allocation between foliage and woody structure: the effects of tree size and specific functional traits. Annals of Forest Research 2016; 59(1):49-60.

MENSAH S, VELDTMAN R, ASSOGBADJO AE, KAKAÏ RG, SEIFERT T. Tree species diversity promotes aboveground carbon storage through functional diversity and functional dominance. Ecology and Evolution 2016;2525(3):1-12.

MENSAH S, VELDTMAN R, DU TOIT B, KAKAÏ RG, SEIFERT T. Aboveground Biomass and Carbon in a South African Mistbelt Forest and the Relationships with Tree Species Diversity and Forest Structures. Forests 2016;7:79, 17 pages.

MENSAH S, VELDTMAN R, SEIFERT T. Allometric models for height and aboveground biomass of dominant tree species in South African Mistbelt forests. Southern Forests: A Journal of Forest Science (Southern Hemisphere Forestry Journal) 2016; 1:1-12.

MUNALULA F, BLUMENTRITT M, SEIFERT T, WESSELS CB. A method for determining knotty core sizes of standing Pinus patula trees based on tree ring sampling. DENDROCHRONOLOGIA 2016; 38:11-17.

MURIMA D, PFUKWA H, TIGGELMAN I, HARTMANN P, PASCH H. Novel polymer clay-based nanocomposites: Films with remarkable optical and water vapor barrier properties. MACROMOLECULAR MATERIALS AND ENGINEERING 2016; 301(7):836-845.

NGUBENI N, JACOBS SM, SEYDACK A, VERMEULEN WJ, SASS G, SEIFERT T. Trade-off relationships between tree growth and defense: a comparison of Ocotea bullata and Curtisia dentata following bark harvesting in an evergreen moist South African Forest. Trees - Structure and Function 2017; 1487(1):1-10.

SCHEEPERS GP, DU TOIT B. Potential for utilization of wood ash on coastal arenosols with limited buffer capacity in KwaZulu-Natal and its effect on eucalypt stand nutrition and growth. iForest-Biogeosciences and Forestry 2016; 2146(009):1-9.

SCHEEPERS GP, DU TOIT B. Potential use of wood ash in South African forestry: a review. Southern Forests: A Journal of Forest Science (Southern Hemisphere Forestry Journal) 2016; 78(4):255-266.

SCHULZE ED, AAS G, GRIMM G, GOSSNER MM, WALENTOWSKI H, AMMER C, KÃœHN I, BOURIAUD O, VON GADOW K. A review on plant diversity and forest management of European beech forests. EUROPEAN JOURNAL OF FOREST RESEARCH 2016; 135:51-67.

SUKLJE K, ANTALICK G, BUICA AS, LANGLOIS J, COETZEE ZA, GOUOT JC, SCHMIDTKE LM, DELOIRE AJ. Clonal differences and impact of defoliation on Sauvignon Blanc (Vitis vinifera L.) wines: a chemical and sensory investigation. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2016; 96:915-926.

SYAMPUNGANI S, GELDENHUYS CJ, CHIRWA PWC. Regeneration dynamics of miombo woodland in response to different anthropogenic disturbances: forest characterisation for sustainable management. AGROFORESTRY SYSTEMS 2016; 015:1-14.

VAN DER MERWE J, ACKERMAN PA, PULKKI RE, LÄNGIN DW. The Impact of Log Moisture Content on Chip Size Distribution When Processing Eucalyptus Pulpwood. Croatian Journal of Forest Engineering 2016;37(2):297-307.

VAN DER MERWE J, ACKERMAN PA, PULKKI RE, LÄNGIN DW. The impact of mechanical log surface damage on chip size uniformity during debranching and debarking Eucalyptus pulpwood logs using a single-grip harvester. Southern Forests: A Journal of Forest Science (Southern Hemisphere Forestry Journal) 2016; 78(2):159-167.

VON GADOW K, ZHAO X, TEWARI VP, ZHANG C, KUMAR A, CORRAL-RIVAS JJ, KUMAR R. Forest observational studies: an alternative to designed experiments. EUROPEAN JOURNAL OF FOREST RESEARCH 2016;135:417-431.

WANG J, CHENG Y, ZHANG C, ZHAO Y, ZHAO X, VON GADOW K. Relationships between tree biomass productivity and local species diversity. Ecosphere 2016; 7(11):1-11.

WANG J, WU L, ZHANG C, ZHAO X, BU W, VON GADOW K. Combined effects of nitrogen addition and organic matter manipulation on soil respiration in a Chinese pine forest. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 2016; 23(22710):1-10.

WESSELS CB, CRAFFORD PL, DU TOIT B, GRAHN T, JOHANSSON M, LUNDQVIST SO, SÄLL H, SEIFERT T. Variation in physical and mechanical properties from three drought tolerant Eucalyptus species grown on the dry west coast of South Africa. European Journal of Wood and Wood Products/Holz als Roh - und Werkstoff 2016; 74:563-575.

WIESE L, ROS MESA IM, ROZANOV AB, BOSHOFF AL, DE CLERCQ WP, SEIFERT T. An approach to soil carbon accounting and mapping using vertical distribution functions for known soil types. GEODERMA 2016;263:264-273.

WILLIAMS C, ACKERMAN PA. Cost-productivity analysis of South African pine sawtimber mechanised cut-to-length harvesting. Southern Forests: A Journal of Forest Science (Southern Hemisphere Forestry Journal) 2016; 78(4):267-274.

XU W, HAO M, WANG J, ZHANG C, ZHAO X, VON GADOW K. Soil elements influencing community structure in an old-growth forest in Northeastern China. Forests 2016; 7(159):1-14.

YAO J, ZHANG X, ZHANG C, ZHAO X, VON GADOW K. Effects of density dependence in a temperate forest in northeastern China. Scientific Reports 2016; 6(32844):1-11.

ZHANG X, YAO J, FAN C, TAN L, ZHANG C, WANG J, ZHAO X, VON GADOW K. Stoichiometry patterns in the androdioecious Acer tegmentosumScientific Reports 2016; 35022:1-8.

DE CAUWER V, GELDENHUYS CJ, AERTS R, KABAJANI M, MUYS B. Patterns of forest composition and their long term environmental drivers in the tropical dry forest transition zone of southern Africa. Forest Ecosystems 2016; 016(9):3-23.

MAGALHAES TM, SEIFERT T. Estimation of tree biomass, carbon stocks, and error propagation in Mecrusse Woodlands. Open Journal of Forestry 2015; 5:471-488.

VON GADOW K, ZHANG G, DURRHEIM G, DREW DM, SEYDACK A. Diversity and production in an Afromontane Forest. Forest Ecology 2016; 74(7):3-15.

Chapters in books

HAM C, CHIRWA WP, THERON F. The forester as grassroots change agent - from forest users to forest owners. In: THERON F, MCHUNU NA (eds.) Development, change and the change agent - Facilitation at grassroots, 2nd edition, van Schaik, Hatfield, Pretoria, South Africa, 2016: 411-435.

SEIFERT T, HAM C, HAM H. Sustainable forestry. In: SWILLING M, Musango JK, WAKEFORD JJ (eds.) Greening the South African Economy - Scoping the Issues, Challenges and Opportunities, UCT Press, Claremont, Cape Town, South Africa, 2016: 1-440.


RYPSTRA T, MUGABI P. Method of analysing a wooden pole. Patent No. 2015/01310, South Africa 2016.

Doctoral degrees completed

MAGALHAES TM. Estimation of tree biomass, measurement uncertainties, and Morphological Topology of Androstachys Johnsonnii Prain. PhD (Bosb), 2016. 100 pp. Promotor: SEIFERT T.

MENSAH S. Selected key ecosystem services, functions, and the relation with biodiversity in natural forest ecosystems. PhD (Bosb), 2016. 133 pp. Promotor: SEIFERT T. Medepromotor: VELDTMAN R

Masters degrees completed

BAPTISTA C. An assessment of variation within IAS 41 compliant methodology used in South Africa to estimate the value of pulpwood plantations. MScBosb, 2016. 100 pp. Studieleier: HAM C.

ELAGO SN. Assessing harvesting and postharvest handling practices of Strychnos cocculoides fruit in the Kavango West Region of Namibia. MScBosb, 2016. 86 pp. Studieleier: HAM H.

ERASMUS J. The effect of planting density on Pinus patula stem form, wood properties and lumber strength and stiffness. MSc Houtkunde, 2016. 100 pp. Studieleier: WESSELS CB.

GRESSE LC. The impact of repeated prescribed burning in semi-mature pine plantation forests of Mpumalanga on fuel loads, nutrient pools and stand productivity. MScBosb, 2016. 100 pp. Studieleier: DU TOIT B.

GUINEY IS. Agroforestry development and implementation in South africa: An assessment of selected case studies. MFor, 2016. 96 pp. Studieleier: HAM H. Medestudieleier: HAM C.

KADAS M. Greyscale - density calibration of an industrial CT Scanner for wood microdensitometry. MScBosb, 2016. 100 pp. Studieleier: SEIFERT T. Medestudieleier: MEINCKEN M.

MARTIN CJ. Slope effect on costs and productivity of single-grip purpose-built and excavator based harvesters. MScBosb, 2016. 60 pp. Studieleier: ACKERMAN PA. Medestudieleier: Längin DW.

MELANE M. Evaluation of the potential of non-woody invasive plant biomass for electricity generation. MScBosb, 2016. 109 pp. Studieleier: MEINCKEN M. Medestudieleier: HAM C.

PIENAAR LO. Modeling above-ground biomass of selected tree species within a Mistbelt forest in KwaZulu Natal. MScBosb, 2016. 100 pp. Studieleier: SEIFERT T. Medestudieleier: DREW DM.

TAHULELA PTM. The Relationship between Agroforestry and Ecosystem Services: Role of Agroforestry in rural Communities. MScBosb, 2016. 100 pp. Studieleier: HAM C. Medestudieleier: HAM H.



Journal Articles


ACKERMAN PA, PULKKI RE, GLEASURE EA. Softwood sawlog secondary transport travel speed prediction for the South African forestry industry. Southern Forests 2015; 77(2):107-113.

PHIRI D, ACKERMAN PA, WESSELS CB, DU TOIT B, JOHANSSON M, SÄLL H, LUNDQVIST SO, SEIFERT T. Biomass equations for selected drought-tolerant eucalypts in South Africa. Southern Forests 2015; 77(4):255-262.

VAN DER MERWE J, PULKKI RE, ACKERMAN PA. Fibre losses during debranching and debarking of Eucalyptys pulp logs using a single-grip harvester. Southern Forests 2015; 77(4):309-313.

GRIGOLATO S, PELLEGRINI M, ACKERMAN PA, CAVALLI R. Light-lift helicopter logging operations in the Italian Alps: a preliminary study based on GNSS and a video camera system. Forest Science & Technology 2015; 2015:1-10.

BRIENZO M, TYHODA L, BENJAMIN YL, GORGENS JF. Relationship between physicochemical properties and enzymatic hydrolysis of sugarcane bagasse varieties for bioethanol production. New Biotechnology 2015; 32(2):253-262.

DOVEY SB, DU TOIT B. Nitrogen mineralisation in a clonal Eucalyptys plantation on sandy soil after clearfelling and residue burning. Indian Forester 2015; 141(4):411-421.

AMBUSHE AA, DU PLESSIS A, MCCRINDLE RI. Laser-induced breakdown spectroscopy and inductively coupled plasma-mass spectrometry for determination of Cr in soils from Brits District, South Africa. Bulletin of the Chemical Society of Ethiopia 2015; 29(3):357-366.

VAZIRI M, DU PLESSIS A, SANDBERG D, BERG S. Nano X-ray tomography analysis of the cell-wall density of welded beech joints. Wood Material Science & Engineering 2015; 10(4):368-372.

PRETZSCH H, BIBER P, UHL E, DAHLHAUSEN J, RÖTZER T, CALDENTEY J, KOIKE T, VAN CON T, SEIFERT T, DU TOIT B, FARNDEN C, PAULEIT S. Crown size and growing space requirement of common tree species in urban centres, parks, and forests. Urban Forestry & Urban Greening 2015; 14:466-479.

EFFAH B, VAN REENEN AJ, MEINCKEN M. Characterisation of the interfacial adhesion of the different components in Wood-Plastic composites with AFM. Springer Science Reviews 2015; 3:97-111.

HEVIA A, CAO QV, ALVAREZ-GONZALEZ JG, RUIZ GONZALEZ AD, VON GADOW K. Compatibility of whole-stand and individual-tree models using composite estimators and disaggregation. Forest Ecology and Management 2015; 03(035):46-56.

HUANG Y, ZHAO Y, LI S, VON GADOW K. The effects of habitat area, vegetation structure and insect richness on breeding bird populations in Beijing urban parks. Urban Forestry & Urban Greening 2015; 14:1027-1039.

SCHULZE ED, AAS G, GRIMM G, GOSSNER MM, WALENTOWSKI H, AMMER C, KÜHN I, BOURIAUD O, VON GADOW K. A review on plant diversity and forest management of European beech forests. European Journal of Forest Research 2016; 10:1-17.

SOTO JEL, CORRAL-RIVAS JJ, CALDERÓN OAA, VON GADOW K. Grouping forest tree species on the Sierra Madre Occidental, Mexico. Allgemeine Forst und Jagdzeitung 2015; 186(3/4):63-71.

VON GADOW K, KOTZE H, SEIFERT T, STAUPENDAHL K, ALVAREZ GONZALEZ JG. Potential density and tree survival: an analysis based on South African spacing studies. Southern Forests 2014; 77(2):115-122.

WANG J, BU W, ZHAO B, ZHAO X, ZHANG C, FAN J, VON GADOW K. Effects of Nitrogen addition on leaf decomposition of single-species and litter mixture in Pinus tabulaeformis forests. Forests 2015; (2015)(6):4462-4476.

YAN Y, ZHANG C, WANG Y, ZHAO X, VON GADOW K. Drivers of seedling survival in a temperate forest and their relative importance at three stages of succession. Ecology and Evolution 2015; 1688:1-13.

ZENG WS, TOMPPO E, HEALEY S, VON GADOW K. The national forest inventory in China: history - results - international context. Forest Ecosystems 2015; 2015:2-23.

LINDNER BG, VLOK P, WESSELS CB. Determining optimal primary sawing and ripping machine settings in the wood manufacturing chain. Southern Forests 2015; 1:1-11.

WESSELS CB, MALAN FS, KIDD M, RYPSTRA T. The variation of microfibril angle in South African grown Pinus patula and its influence on the stiffness of structural lumber. Southern Forests 2015; 3:213-219.

WESSELS CB, MALAN FS, SEIFERT T, LOUW JH, RYPSTRA T. The prediction of the flexural lumber properties from standing South African-grown Pinus patula trees. European Journal of Forest Research 2015; (2015)(134):1-18.

WIESE L, ROS MESA IM, ROZANOV AB, BOSHOFF AL, DE CLERCQ WP, SEIFERT T. An approach to soil carbon accounting and mapping using vertical distribution functions for known soil types. Geoderma 2016; 263(2016):264-273.

KLEMMT H-J, WÖRLE A, SEIFERT T. Neue Wege im Waldflächen-Monitoring in Bayern. Allgemeine Forstzeitschrift 2015; 70(17):39-42.

MAGALHAES TM, SEIFERT T. Below- and aboveground architecture of Androstachys johnsonii prain: topological analysis of the root and shoot systems. Plant Soil 2015; 10(1007):1-13.

MAGALHAES TM, SEIFERT T. Biomass Modelling of Androstachys johnsonii Prain: A comparison of three methods to enforce additivity. International Journal of Forestry Research 2015; 2015:1-17.

MAGALHAES TM, SEIFERT T. Estimates of Tree Biomass, and its uncertainties through mean-of-ratios, ratio-of-means, and regression estimators in double sampling: A comparative study of mecrusse woodlands. American Journal of Agriculture & Forestry 2015; 3(5):161-170.

MAGALHAES TM, SEIFERT T. Tree component biomass expansion factors and root-to-shoot ratio of Lebombo ironwood: measurement uncertainty. Carbon Balance & Management 2015; 10(9):1-14.

MEINCKEN M, FUNK SC. Burning characteristics of low-cost safety charcoal briquettes made from wood residues and soil for domestic use. Agroforestry Systems 2015; 89:357-363.

NDALOWA D, HAM C, HAM H. Evaluation of carbon accounting models for timber plantations in KwaZulu Natal, South Africa. Proceedings of the 5th International DAAD Workshop - Briding the gap between information needs and foresgt inventory capacity, Göttingen, Germany, Cuvillier Verlag Göttingen 2015: 47-59.

VENA PF, BRIENZO M, GARCIA APARICIO MDP, GORGENS JF, RYPSTRA T. Dilute sulphuric acid extraction of Hemicelluloses from Eucalyptus grandis and its effect on Kraft and Soda-AQ pulp and handsheet properties. Cellulose Chemistry and Technology 2015; 49(9-10):819-832.

DREW, D.M., DOWNES, G.M.  (2015).  A model of stem growth and wood formation in Pinus radiata.  Trees: Structure and Function 29: 1395 - 1413.


Proceedings International


AMIANDAMHEN SO. Phosphate bonded natural fibre composites. 2nd International Conference on Composites, Biocomposites and Nanocomposites, Durban, South Africa, Durban University of Technology 2015: 161-177.

NDALOWA D, HAM C, HAM H. Evaluation of carbon accounting models for timber plantations in KwaZulu Natal, South Africa. Proceedings of the 5th International DAAD Workshop - Briding the gap between information needs and foresgt inventory capacity, Göttingen, Germany, Cuvillier Verlag Göttingen 2015: 47-59.

MAKHETHA MRA, PIUS MT, VAN RENSBURG E, TYHODA L. Fractioning of sugarcane bagasse and Eucalyptus grandis into valuable chemicals and materials. In: CHIMPHANGO AFA, GORGENS JF (eds.) 1st IWBLCM (Internatinal Workshop on Biorefinery of Lignocellulosic materials, Córdoba, Spain, Spain 2015: 1-2.


Doctoral completed



ACKERMAN PA. Supply chain management to integrate strategic, tactical and operational planning of wood procurement in the Eastern Cape. PhD (Bosb), 2015. 200 pp. Promotor: Pulkki RE.

ODHIAMBO BO. The effect of fire damage on the growth and survival mechanisms of selected native and commercial trees in South Africa. PhD (Bosb), 2015. 121 pp. Promotor: SEIFERT T. Medepromotor: MEINCKEN M.


Masters completed


JOOSTE GHC. Periodic drought effects on afrotemperate forests in the Southern Cape of South Africa. MScBosb, 2015. 75 pp. Studieleier: SEIFERT T.

KAYOFA F. Natural regeneration potential of Pterocarpus angolensis (Kiaat tree) in the dry forests of northern Namibia. MScBosb, 2015. 185 pp. Studieleier: DU TOIT B.

MWAMBA RM. Modelling aboveground biomass of Acacia mearnsii and competing indigenous species (Celtis africana, Vepris lanceolata, Rapanea melanophloeos) in South Africa. MScBosb, 2015. 81 pp. Studieleier: SEIFERT T.

NJAMELA SN. Lignin polysaccharide networks in biomass and corresponding processed materials. MSc Houtkunde, 2015. 154 pp. Studieleier: TYHODA L. Medestudieleier: GORGENS JF.

RABIE JF. Analysis of a mechanised cut-to-length timber harvesting system through discrete event simulation. MScBosb, 2015. 104 pp. Studieleier: ACKERMAN PA.

RUST SM. Classification of timber from Pinus radiata trees exposed to forest fires. MScBosb, 2015. 100 pp. Studieleier: MEINCKEN M.