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30 December 2019 | Story Thabo Kessah | Photo Rian Horn
UFS Qwaqwa Campus
Hundreds of international botanists will be attending the 46th SAAB Annual Conference on the Qwaqwa Campus.

The University of the Free State Qwaqwa Campus is gearing up to host the 46th Annual Conference of the South African Association of Botanists from 7 to 10 January 2020. Talking about the choice of venue, Chairperson of the Local Organising Committee, Dr Sandy-Lynn Steenhuisen, said the unique setting in the shadow of the Maloti-Drakensberg Mountains highlights the Qwaqwa Campus as a fantastic base for interdisciplinary montane studies. “This is the home of the Afromontane Research Unit (ARU), and it will also give the delegates an opportunity to explore a treasure trove of botanical diversity on a post-conference tour to the top of the Amphitheatre in the Northern Drakensberg,” she said.

International delegates

“The conference will be attended by approximately 250 delegates representing at least 10 countries.  We are very excited to host two international and two national plenaries, namely Prof Peter Linder (University of Zürich), Prof Felipe Amorim (São Paulo State University – UNESP), Prof Annah Moteetee (University of Johannesburg), and our Young Botanist award winner from SAAB 2019, Ryan Rattray from GeneLethu Laboratories.”

SAAB 2020 is open to all researchers, industry partners, and citizen scientists from any botanical field. “The theme will embrace Qwaqwa’s cultural heritage by using the Sesotho phrase ‘Dimela ke bophelo’, which translates to ‘Plants are life’. This theme emphasises the dependence of all earthly life on plants. Delegates are offered the opportunity to book residence accommodation adjacent to the conference venue, and our conference organisers, XL Millennium, are eager to help with registration and any travel arrangements,” she added.

Botanists to be awarded

The conference will also be honouring botanists for their lifetime contributions to the field of plant sciences with the awarding of gold and silver medals, and the best doctoral thesis from the previous year with a bronze medal. These will be awarded during the gala dinner at the end of the conference.

News Archive

Fire as a management tool questionable in arid and semi-arid grassland areas
2015-03-24

Wild fire in the grassland
Photo: Supplied


The influence of fire on the ecosystem in the higher rainfall ‘‘sour’’ grassland areas of southern Africa has been well established. However, less information is available for arid and semi-arid ‘‘sweet’’ grassland areas, says Prof Hennie Snyman, Professor in the Department of Animal, Wildlife, and Grassland Sciences, about his research on the short-term impact of fire on the productivity of grasslands in semi-arid areas.

Sour and sweet grassland areas can be defined as receiving either higher or lower than approximately 600 mm of rainfall respectively. In quantifying the short-term impact of fire on the productivity of grasslands in semi-arid areas, a South African case study (experimental plot data) was investigated.

“Burned grassland can take at least two full growing seasons to recover in terms of above- and below-ground plant production and of water-use efficiency (WUE). The initial advantage in quality (crude protein) accompanying fire does not neutralise the reduction in half of the above-ground production and poor WUE occurring in the first season following the fire.

“The below-ground growth is more sensitive to burning than above-ground growth. Seasonal above-ground production loss to fire, which is a function of the amount and distribution of rainfall, can vary between 238 and 444 kg ha -1 for semi-arid grasslands. The importance of correct timing in the utilisation of burned semi-arid grassland, with respect to sustained high production, cannot be overemphasised,” said Prof Snyman.

In arid and semi-arid grassland areas, fire as a management tool is questionable if there is no specific purpose for it, as it can increase ecological and financial risk management in the short term.

Prof Snyman said: “More research is needed to quantify the impact of runaway fires on both productivity and soil properties, in terms of different seasonal climatic variations. The information to date may already serve as valuable guidelines regarding grassland productivity losses in semi-arid areas. These results can also provide a guideline in claims arising from unforeseen fires, in which thousands of rands can be involved, and which are often based on unscientific evidence.”

For more information or enquiries contact news@ufs.ac.za

 

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