Welcome To Forestry South Africa
Monday, December 18, 2017

click here to see
all logo's

Research

previous page
2nd edition of the Climate Risk and Vulnerability handbook
6 November, 2017
The 2nd edition of the Climate Risk and Vulnerability handbook was launched on 5 October 2017 at the CSIR 6th Biennial Conference in Pretoria. The handbook presents the latest available scientific knowledge on the nature of climate change and its implications for the region... read more
Evolution of polyketide synthesis in a Dothideomycete forest pathogen
8 August, 2017
Fungal secondary metabolites have many important biological roles and some, like the toxic polyketide aflatoxin, have been intensively studied at the genetic level. Complete sets of polyketide synthase (PKS) genes can now be identified in fungal pathogen... read more
Parasitoid assemblage associated with a North American pine weevil in South Africa
2 August, 2017
The weevil Pissodes sp. was first reported as an introduced pest on exotic Pinus spp. in South Africa in 1942. It is only recently that the native wasp Pycnetron pix Prinsloo was described from South Africa as a parasitoid of this weevil. We estimated the frequency... read more
Maternal effects on phenotype, resistance and the structuring of fungal communities in Eucalyptus grandis
20 June, 2017
The environmental experience of plants can modulate the development of the offspring and their interactions with other organisms. These effects, generally known as maternal effects, occur through seed provisioning and epigenetic modifications. read more
The unified framework for biological invasions: a forest fungal pathogen perspective
5 June, 2017
Biological invasions in forests are growing in number and importance globally. The best studied examples are those caused by plants and animals, including insects. In contrast, forest invasions caused by microbes, including fungi, have received much lower levels of attention... read more
Diversity, phylogeny and pathogenicity of Botryosphaeriaceae on non-native Eucalyptus grown in an urban environment: A case study
10 May, 2017
The Botryosphaeriaceae are opportunistic pathogens mostly of woody plants, including Eucalyptus. These fungi can cause cankers and die-back diseases on non-native Eucalyptus trees in South African plantations. Botryosphaeriaceae were isolated from diseased... read more
The balance of trade in alien species between South Africa and the rest of Africa
26 April, 2017
Alien organisms are not only introduced from one biogeographical region to another but also spread within regions. As South Africa shares land borders with six countries, multiple opportunities exist for the transfer of alien species between South Africa and other African countries... read more
A new Leptographium species from the roots of declining Pinus sylvestris in Switzerland
25 April, 2017
Scots pine (Pinus sylvestris) trees have been declining in the Rhône valley, Switzerland, for almost three decades. In an assessment of the role of fungi in this syndrome, the dominant fungus isolated from stained roots was a Leptographium species, morphologically similar... read more
Classical biological control of insect pests of trees: facts and figures
27 March, 2017
Classical biological control (CBC) is the introduction of a natural enemy of exotic origin to control a pest, usually also exotic, aiming at permanent control of the pest. CBC has been carried out widely over a variety of target organisms, but most commonly against insects... read more
Novel and co-evolved associations between insects and microorganisms as drivers of forest pestilence
23 March, 2017
Abstract Some of the most devastating diseases of trees involve associations between forest insects and microorganisms. Although a small number of native insect-microorganism symbioses can cause tree mortality, the majority of associations with tree health implications involve... read more
Planted forest health: The need for a global strategy
23 March, 2017
Several key tree genera are used in planted forests worldwide, and these represent valuable global resources. Planted forests are increasingly threatened by insects and microbial pathogens, which are introduced accidentally and/or have adapted to new host trees. Globalization has... read more
Antifungal actinomycetes associated with the pine bark beetle, Orthotomicus erosus, in South Africa
14 February, 2017
Actinomycete bacteria are often associated with insects that have a mutualistic association with fungi. These bacteria are believed to be important to this insect-fungus association as they produce antibiotics that exclude other saprophytic fungi from the immediate environment. read more
Botrytis eucalypti, a novel species isolated from diseased Eucalyptus seedlings in South China
21 October, 2016
FABI
Eucalyptus has become a preferred species for the production of industrial products and also for the protection of natural forests in South China. Many diseases affect these trees, both on plantations and in nurseries read more
Six recently recorded Australian insects associated with Eucalyptus in South Africa
11 October, 2016
FABI
The increased movement of goods and pathways to transport these goods around the world, combined with the homogenisation of cultivated areas has resulted in an increase in insect movement and establishment. read more
Why IUFRO really matters to tropical forestry research
11 October, 2016
FABI
I took on the presidency of the International Union of Forestry Research Organisations (IUFRO), in October 2014, having the honor to follow in the footsteps of some great leaders in forestry research. In my acceptance speech, I committed to promoting a number of key goals.... read more
Precipitation, not air temperature, drives functional responses of trees in semi-arid ecosystems
9 October, 2016
FABI
Model scenarios of climate change predict that warming & drought will occur simultaneously in the future in many regions. The capacity of woody species to modify their physiology & morphology in response to environmental conditions is widely recognized,... read more
Securing African forests for future drier climates
5 October, 2016
Increasing incidences of drought-induced tree mortality are being recorded worldwide, including Africa. African forests cover a significant proportion of the continent, which implies that African forest sustainability is threatened from a climate-change perspective.  read more
Ecology & population structure of a tree wound-infecting fungus in a native SA forest environment
5 October, 2016
Ceratocystis tsitsikammensis was first isolated from bark harvesting wounds on two indigenous tree species in the Afromontane forests of the Western Cape Province of South Africa. Inoculation studies indicated that it is a potential pathogen of nativeRapanea melanophloeos trees. read more
Neotypification of Dothistroma septosporum and epitypification of D. pini, causal agents of Dothistroma needle blight of pine
5 October, 2016
Dothistroma needle blight (DNB) is one of the most devastating needle diseases on Pinus spp. worldwide. Ever since the description of the causal agent of the disease in Europe in 1911 as Cytosporina septospora, & independently in the USA in 1941 as Dothistroma pini, there... read more
Assessment of beetle diversity, community composition and potential threats to forestry using kairomone-baited traps
29 August, 2016
Traps designed to capture insects during normal movement/dispersal, or via attraction to non-specific (plant) volatile lures, yield by-catch that carries valuable information about patterns of community diversity and composition. In order to identify potential native/introduced pests and... read more
Diseases on Eucalyptus species in Zimbabwean plantations and woodlots
14 May, 2015
FABI
Zimbabwe embarked on planting Eucalyptus species in the early 1900s. Based on a robust breeding programme, it has become a major source of seed for other countries in and outside Africa. read more
Comparative interrogation of the developing xylem transcriptomes of two wood-forming species: Populus trichocarpa and Eucalyptus grandis
16 February, 2015
FABI
Wood formation is a complex developmental process governed by genetic and environmental stimuli. Populus and Eucalyptus are fast-growing, high-yielding tree genera that represent ecologically and economically important species... read more
Genomic patterns of species diversity and divergence in Eucalyptus
16 February, 2015
FABI
We examined genome-wide patterns of DNA sequence diversity and divergence among six species of the important tree genusEucalyptus and investigated their relationship with genomic architecture. read more
Novel taxa in the Fusarium fujikuroi species complex from Pinus spp.
12 February, 2015
FABI
The pitch canker pathogen Fusarium circinatum has caused devastation to Pinus spp. in natural forests and non-natives in commercially managed plantations. This has drawn attention to the potential importance of Fusarium species as... read more
New species, hyper-diversity and potential importance of Calonectria spp. from Eucalyptus in South China
12 February, 2015
FABI
Plantation forestry is expanding rapidly in China to meet an increasing demand for wood and pulp products globally. Fungal pathogens including species of Calonectria represent a serious threat to the growth and sustainability of this industry. read more
FABI-ICFR-Industry alliance publishes a special issue of Southern Forests
17 October, 2014
FABI / ICFR
The latest issue of Southern Forests: a Journal of Forest Science, focuses on the management of Fusarium circinatum in South African pine nurseries and plantations. The fungus causes serious disease of seedlings and mature trees of the... read more
Chemical signatures affecting host choice in the Eucalyptus herbivore, Gonipterus sp. (Curculionidae: Coleoptera)
17 October, 2014
FABI
It is well known that herbivorous insects respond to host plant volatiles. Yet details of how these insects perceive the complex profile of volatiles from different potential host plants have not been studied for most insects. Gonipterus spp. are important... read more
New pest of Eucalyptus detected in South Africa
8 October, 2014
FABI / TPCP
In May this year symptoms of a previously unreported insect pest was detected on Eucalyptus in Midrand, Gauteng. While the symptoms appeared similar to those of some Ophelimus species, no gall formers emerged in captivity until... read more
New publication on biological agent for Leptocybe invasa
19 August, 2014
FABI
A new publication from FABI that appeared this week on the biological agent for Leptocybe invasa. This study provides the first basic data on the biology of the ectoparasitoid S. neseri, which was essential to understand before its application... read more
Cossid moth detected in KwaZulu-Natal
4 February, 2014
FABI / TPCP
The cossid moth, Coryphodema tristis, has recently been detected in the KwaZulu-Natal Midlands area where it is infesting Eucalyptus nitens. Native to South Africa, the cossid moth was first detected infesting E. nitens in 2004, but this is the first report of... read more
Major International Forestry Award to FABI researcher
4 February, 2014
FABI / TPCP
Prof Jolanda Roux (FABI and Dept of Microbiology and Plant Pathology, UP) will receive the IUFRO SCIENTIFIC ACHIEVEMENT AWARD at the next IUFRO World Congress to be held in Salt Lake City, USA, later this year. read more
Established and new technologies reduce increasing pest and pathogen threats to Eucalypt plantations
10 December, 2013
FABI
Plantation forestry based on Eucalyptus spp. has grown dramatically during the past 100 years, mainly in the tropics and southern hemisphere where these trees are non-native. Early plantations were affected by pests and pathogens, although damage was generally... read more
Pruning quality affects infection of Acacia mangium and A. crassicarpa by Ceratocystis acaciivora and Lasiodiplodia theobromae
10 December, 2013
FABI
Pruning (singling) is a common silvicultural practice in commercial Acacia plantations because these trees tend to have multiple stems. The wounds resulting from pruning are susceptible to infection by pathogens. Ceratocystis acaciivora and Lasiodiplodia... read more
Botryosphaeriaceae associated with Pterocarpus angolensis (kiaat) in South Africa
10 December, 2013

FABI
There have been several recent reports of Pterocarpus angolensis (kiaat) trees dying in South Africa, Zambia and Zimbabwe, where this tree is used in traditional medicine and is a valuable source of timber for woodcarving and furniture. A survey of material... read more

Three new Ceratocystis species and evidence for geographic differentiation of the genus in Africa
10 December, 2013
FABI
The emergence of wattle wilt disease on nonnative Acacia mearnsii trees in Africa, caused by the indigenous
fungus Ceratocystis albifundus, has highlighted a need to better understand the diversity, ecology and distribution of Ceratocystis species in... read more
Ceratocystis species, including two new taxa, from Eucalyptus trees in South Africa
10 December, 2013
FABI
The ascomycete genus Ceratocystis (Microascales, Ceratocystidaceae) includes important fungal pathogens of trees, including Eucalyptus species. Ceratocystis species and their Thielaviopsis asexual states are typically associated with insects, such as nitidulid... read more
Identification of fungal pathogens occurring in eucalypt and pine plantations in Zambia by comparing DNA sequences
10 December, 2013
FABI
Commercial forestry plantations in Zambia were initiated during the 1960s. Since then, very little attention has been given to diseases that impact negatively on the production of these plantations. Recent field surveys have highlighted the occurrence and impact... read more
A serious canker disease caused by Immersiporthe knoxdaviesiana gen. et sp. nov. (Cryphonectriaceae) on native Rapanea melanophloeos in South Africa
10 December, 2013
FABI
Recent disease surveys in the Western Cape province of South Africa have revealed a previously unknown and serious stem canker disease on native Rapanea melanophloeos (Myrsinaceae, Ericales) trees. Cankers commonly result in the death of branches or entire stems.... read more
High population diversity and increasing importance of the Eucalyptus stem canker pathogen, Teratosphaeria zuluensis, in South China
10 December, 2013
FABI
Coniothyrium stem canker, caused by Teratosphaeria zuluensis, is one of the most important diseases of
plantation-grown Eucalyptus trees in tropical and subtropical areas of the world. Previous research on the
population structure of T. zuluensis in... read more
Eucalyptus leaf beetle Paropsisterna selmani (Chrysomelidae: Paropsini)
13 November, 2013
FABI
If this introduced Eucalyptus pest in Ireland follows the same trend as other Eucalyptus pests, it might start moving around the world soon. Something to look out for. read more
Volumes and Efficiencies of Water-use within selected indigenous and introduced tree species in SA
11 November, 2013
CSIR
South African indigenous forests provide goods and services which are recognised as valuable natural capital, and are well documented. However, the limited extent of these forests has forced South Africa to accelerate the expansion of its own plantation forest... read more
Forests, rangelands and climate change in southern Africa - Forests and Climate Change Working Paper No. 12.
29 October, 2013
CSIR
The Food and Agriculture Organization of the UN (FAO), in collaboration with the Council of Scientific and Industrial Research (CSIR) in South Africa and with the support of the Government of Belgium, released a forests and climate change working paper, titled... read more
Communicating climate information for decision-making - SADC Climate Change Project
29 October, 2013
CSIR
The USAID-funded project was designed to build capacity among the SADC member states in understanding information on climate impact and risk in the context of early-warning strategies and planning. The central product of this project was a handbook entitled... read more
Release of biological control for the Eucalyptus bronze bug
22 October, 2013
FABI / TPCP
On 11th of October Cleruchoides noackae, a biological control agent for the Eucalyptus bronze bug, Thaumastocoris peregrinus, was released simultaneously in Limpopo, around the Tzaneen area, in Kwazulu-Natal... read more
Biological control agent for Thaumastocoris peregrinus to be released in South Africa
26 August, 2013
FABI / TPCP
The Tree Protection Co-­‐operative Programme (TPCP) based at FABI has recently received permission from the Department of Agriculture, Forestry and Fisheries (DAFF) and the Department of Environmental Affairs (DEA) to release the parasitic wasp... read more
Update on Glycaspis brimblecombei (red gum lerp psyllid)
15 August, 2013
FABI / TPCP
The red gum lerp pysllid, Glycaspis brimblecombei, is a pest of Eucalyptus species that has spread from Australia into many Eucalyptus growing countries, where it can cause substantial losses. This insect was first... read more
One year of releasing Selitrichodes neseri: biocontrol agent for Leptocybe invasa
6 August, 2013
FABI / TPCP
It has been about one year since the first releases of Selitrichodes neseri, biological control agent for Leptocybe invasa. This minute parasitic wasp was first released in the Zululand region in July 2012 after about two years of intensive research at... read more
Official scientific report of Myrtle rust in Africa
4 July, 2013
FABI / TPCP
A few weeks ago we reported the first observation of Myrtle rust in Africa, where it occurred on an ornamental Myrtus communis plant in KwaZulu-Natal. This is the rust that also poses a potential threat to other members of the Myrtaceae such as... read more
Myrtle / Eucalyptus rust now in South Africa!
20 June, 2013
FABI
Researchers at FABI this week confirmed the presence of the myrtle rust pathogen, Puccinia psidii, in South Africa. The possible presence of the pathogen was brought to our attention by an alert forester, Marcel Verleur of Sappi, who spotted a diseased Myrtus... read more
Update on releases of Selitrichodes neseri, biocontrol agent for Leptocybe invasa
2 April, 2013
TPCP / FABI
Releases of Selitrichodes neseri in Eucalyptus plantations in South Africa continue, with over 4 000 female wasps released at over 200 sites to date. These releases have focused on the regions with the highest infestation of Leptocybe invasa, namely... read more
Biocontrol agent for eucalyptus gall wasp released
20 November, 2012
TPCP
It was with great excitement that we found the first Selitrichodes neseri wasp emerging from Leptocybe-infested material collected in the field. This material was collected from a site in Mtunzini, Zululand, where S. neseri was released in September this year. read more
Pest and disease threats accelerating
17 September, 2012
TPCP
The following article was published in the June 2012 issue of SA Forestry Magazine. It is a good summary of some of the ideas raised and reports given at the annual TPCP meeting in May 2012. read more
Detection of large-scale landscape changes in and around the Kruger National Park
15 August, 2012
CSIR
The Carnegie Airborne Observatory (CAO) - an integrated airborne hyperspectral and light detection and ranging (LiDAR) system based at Stanford University in the United States - recently completed a third mission to the Kruger National Park (KNP) in South... read more
Researchers one step closer to providing a country-wide nitrogen map for southern Africa
13 August, 2012
CSIR
Remote sensing specialists are standing by to capitalise on the launch of the European Space Agency's (ESA) Sentinel-2 Earth observation satellite in 2013, as that will, for the first time, enable them to develop a nitrogen map for southern Africa. read more
Biological control agent for Leptocybe invasa released
30 July, 2012
TPCP
July 25 was an important day for forest protection in South Africa, as it marked the first release of Selitrichodes   neseri, the biological control agent for the eucalyptus gall wasp, Leptocybe invasa. Leptocybe invasa is one of the most devastating... read more
New pest of Eucalyptus, Glycaspis brimblecombei, in South Africa
27 July, 2012
FABI / TPCP
A new invasive insect on Eucalyptus was recently detected in the Pretoria area by Prof. Stefan Neser. Although the identity must still be confirmed, we are almost certain that this insect is the red gum lerp psyllid, Glycaspis brimblecombei. This insect is a... read more
Application of Plant Breeders’ Rights (PBR) for CSIR GxN2107
24 July, 2012
CSIR
The submission of the application for Plant Breeders' Rights for the CSIR eucalypt clone GxN2107 is the first of its kind in South Africa as no applications for forest tree species have been submitted and no guidelines have been drafted before.  The advantage... read more
Chemical and Cryo-methods for assessing hardwood pulp fibre ultrastructure
24 July, 2012
CSIR
Accurate imaging and analysis of the fibre wall ultrastructure depends extensively on the sample preparation method used (Chinga-Carrasco, 2010). Various techniques and methods are available for sample preparation but their use is limited by the sensitivity to... read more
Understanding our natural resources at the nano-scale for improved utilisation
24 July, 2012
CSIR
Understanding the complex biological ultrastructure of our natural resources at the nano-scale is fundamental to improve pulping processes, augment product development, problem solve and enhance fibre utilisation. A suite of sample preparation and microscopy... read more
Selitrichodes release
16 July, 2012
FABI
Since hearing that we have permission to release Selitrichodes neseri, a potential biological control agent for Leptocybe invasa, we have been inundated with requests to release the wasp in different areas. We are working very hard to build up populations of the... read more
Why a mild-mannered American beetle has become a tree killer in Asia
9 February, 2012
FABI
The story of the how the red turpentine beetle and its fungus turned aggressive after introduction into a new environment. Several researchers from FABI are collaborating with Americans and Chinese scientists to better our understanding of this phenomenon. read more
Disease Warning – Puccinia psidii
6 February, 2012
FABI
Foresters in South Africa have been made conscious about Eucalyptus rust since the 1990's, and the pathogenPuccinia psidii has been feared in Australia ever since it first started causing disease on Eucalyptus in South America in the... read more
Large scale die-off of an Iconic South African Tree – Euphorbia Ingens
6 February, 2012
Unexplained die-off of Euphorbia ingens (Candelabra, Naboom or Mokgoto) in the Limpopo Province (Fig. 1) has captured the attention of researchers associated with the CTHB. Results from research on this phenomenon suggest that it is the product of a complex interaction between... read more
Gonipterus Scutellatus
6 February, 2012
Gonipterus scutellatus, the Eucalyptus snout beetle, was first noted into South Africa in 1916 in Cape Town and by 1929 it had spread throughout eucalypt growing areas in South Africa. When initially reported it was causing severe damage, especially on E. globules and E. viminalis species but has... read more
Cellulose Fibril Aggregation Studies of Eucalyptus Dissolving Pulps Using Atomic Force Microscopy
17 November, 2011
The work presented will report on the use of AFM to study the CFA characteristics of dissolving pulp of a clone of Eucalyptus grown in compartments with contrasting growth rates (low and high), at different stages of the pulping process (solid wood, unbleached [raw] and fully bleached) to... read more
Identification of PCR-base markers linked to wood splitting in Eucalyptus Grandis
17 November, 2011
Wood splitting is a defect in eucalyptus which results in considerable losses when converting logs to solid wood products. Commonly in forestry, molecular markers are identified through studying pedigrees from a single cross. This limits the application of these markers to that population. The... read more
Pest and disease threats to plantation forestry in South Africa
17 November, 2011
read more
Unexplored Ophiostomatoid Fungal Diversity in South Africa
16 November, 2011
read more
A fungus from Africa threatens our Eucalyptus plantations
16 November, 2011
read more
Diversity and Evolution of Fusarium species in the Gibberella Fujikuroi Complex
16 November, 2011
read more
Genome sequence of Pantoea ananatis – a Eucalyptus pathogen
16 November, 2011
read more
UP scientists unravel hidden plant pathogenic fungi
16 November, 2011
read more
Comparison of the biophysical and economic water-use efficiencies of indigenous and introduced forests in South Africa
6 June, 2011
Water resources in many catchments in South Africa (SA) are over committed and water is projected to become scarcer. The impacts of plantation forestry on water resources in SA are well known and legislation limits further afforestation. Nevertheless demands for wood continue to grow. A challenge... read more
Measurement of Stickies (Macro, Micro and Potential Secondary Stickies)
3 January, 2011
Contaminants from synthetic polymers such as plastics, coatings, adhesives and waxes remain one of the biggest challenges for papermakers using recovered fibre. These contaminants are called "stickies" because they stick to paper machine felts and wires leading to operating problems,... read more
A technique to identify annual growth rings in Eucalyptus grandis using annual measurements of diameter at breast height and gamma ray densitometry
7 June, 2010
A technique was developed to identify annual growth rings in E. grandis using a combination of annual measurements of diameter at breast height (DBH) from permanent sample plot (PSP) datasets and bark-pith density profiles. By assessing the pattern of radial variation in wood density within the... read more
South African risk and vulnerability atlas
5 April, 2010
The South African Risk and Vulnerability Atlas was conceived and designed with the intent of providing up to date information for key sectors to support strategy development in the areas of risk and vulnerability. This volume presents a selection of such information, translated to communicate key... read more
Acid bi-sulphite pulping effects on hardwoods and a softwood revealed by atomic force microscopy
7 December, 2009
Wood fibres are the raw material used in the production of dissolving pulp for the manufacture of cellulose derivatives such as viscose and cellulose acetate. At the microscopic level, the wood cell wall is organised in layers with different thicknesses and proportions of lignin and... read more
Comparison of deterministically predicted genetic gains with those realised in a South African Eucalyptus grandis breeding program
8 June, 2009
Tree breeders attempt to predict the genetic gains that are likely to be achieved through selection and breeding of new generations, using stochastic or deterministic modelling. There are many factors that may cause a discrepancy between the predicted and realised genetic gains. Often the... read more
Medium resolution image fusion, does it enhance forest structure assessment
7 July, 2008
This research explored the potential benefits of fusing optical and Synthetic Aperture Radar (SAR) medium resolution satellite-borne sensor data for forest structural assessment. Image fusion was applied as a means of retaining disparate data features relevant to modeling and mapping of... read more

click here to see
all logo's