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26 July 2021 | Story Nonsindiso Qwabe | Photo Nonsindiso Qwabe
On top of the Drakensberg. The ARU and Witsieshoek Mountain Lodge research team are, from the left: Grant Martin, Dr Ralph Clark, Jan van Niekerk, Prof Aliza le Roux, Prof Peter Taylor, and Dr Sandy Steenhuisen.

All mountains around the world have native and non-native species that are expanding their ranges quite dramatically; however, little research has been conducted towards understanding the long-term redistribution of species and the effects of global change on biodiversity.


The Afromontane Research Unit (ARU) on the University of the Free State Qwaqwa Campus – as part of the Mountain Invasion Research Network – has secured a two-year EU Horizon 2020 project under the Department of Science and Innovation, which will be looking at the mechanisms underlying the success and impact of range-expanding species on biodiversity and ecosystem functioning.

On Monday 19 July 2021, the ARU took a few of its researchers on a scenic helicopter ride to the summit of the Drakensberg for an alpine field-experiment site inspection of the Mont-aux-Sources peak, one of the highest sections of the Drakensberg range. This site has been identified for the project which the research unit will be leading on mountain research.

ARU Director, Dr Ralph Clark, said the project would explore the effects of global change, biological invasions (when species invade new geographic regions), as well as climate and land-use change. He said experiments were needed to explore the various possibilities and to test the extent to which species respond to experimental treatments. The project would therefore be conducting experiments for two years using open-top chambers – causing an increase in temperature of 3 or 4 degrees to what you find naturally – on plant species from lower down to the top of the mountain, to see how they function. “This will give us an idea of whether they will be able to survive in global warming scenarios. If temperatures get warmer, we might start seeing a lot of plants up here that we wouldn’t otherwise find here.”

Dr Clark said little is known about the long-term monitoring of species distribution and the effects of global change. Implementing the project in the Maloti-Drakensberg alpine area will therefore put the area in the global mountain research arena. The elevational gradient in the Maloti-Drakensberg Mountains provides space to explore the key processes underlying the variation in species elevation with climate change. “One of the things we don’t know much about are alpine systems. We are hoping to establish a long-term alpine research site and try to add as many studies as we can. The more science we can bring up here, the more we can know about mountain life. What happens on mountains has a lot of impact on social dynamics.

“This project is looking to see what is driving range expansion. Every mountain has its own context. In the Swiss alpine, fires are not a big factor, but fires are one of the biggest factors on our mountains. Some of our native and non-native species are therefore fire-driven, so as fire increases, you might have them spreading faster.”

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News Archive

Her mission: Looking for viruses
2017-10-03

Description: Burt readmore Tags: Prof Felicity Burt, Felicity Burt, inaugural lecture, medical virology, UFS Faculty of Health Sciences, arboviruses 

Prof Felicity Burt delivering her inaugural lecture,
Catching a Virus
Photo: Stephen Collett

“Preparing and presenting an inaugural lecture is an opportunity to look back at one’s career and to enjoy previous highlights and achievements; to share these, not only with colleagues, but also with family and friends.”

This is according to Prof Felicity Burt, who recently presented her inaugural lecture, Catching a Virus. Prof Burt is a professor in medical virology in the Faculty of Health Sciences at the University of the Free State (UFS). It may sound ominous, but it is a story about identifying viruses, and finding and stopping them in their tracks in nature.

Research focus on arbo- and zoonotic viruses 
“My research focuses on arboviruses and zoonotic viruses,” said Prof Burt. “Arboviruses are viruses that are transmitted by insect vectors, such as mosquitoes, ticks, midges or sandflies, whereas zoonotic viruses are naturally transmitted from animals to humans. However, there is a considerable overlap between these two groups.” The research looks at host responses, virus discovery and surveillance in order to identify which of the viruses in circulation have the potential to cause human diseases.

“Emerging and re-emerging viruses have significant implications for public health,” said Prof Burt at the start of her lecture. She also stated that there have been disease outbreaks of unprecedented magnitude, which have spread and established in distinct geographic regions. “Many of these emerging viruses are transmitted by vectors or are spread to humans from animals. These viruses can cause significant diseases in humans,” said Prof Burt. 

There are many reasons why these viruses re-emerge, such as global warming, human invasion in forested areas, changes in agricultural practices, international travel, as well as the illegal movement of animals. Prof Burt used the Zika virus as an example of a recent emerging virus. 

More than 20 years’ experience 

With more than 20 years’ experience and a PhD in medical virology from the University of the Witwatersrand, Prof Burt is a renowned specialist. She has worked in the Special Pathogens Unit at the National Institute for Communicable Diseases, and was a member of various teams responding to outbreaks of Ebola and Rift Valley fever in Africa and Saudi Arabia, respectively. She is co-author of more than 51 articles in international scientific journals, as well as six chapters on arboviruses. In 2016, she was awarded a SARChl research chair by the South African Research Chair Initiative for her research on vector-borne and zoonotic diseases.

Click here to read the full lecture.

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