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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

Hearing loss a silent public health crisis in South Africa
2017-03-27

Description: Hearing loss a silent public health crisis in South Africa Tags: Hearing, Deaf, World Hearing Day
Dr Magteld Smith engages on the topic of hearing loss
and how it coincides with the commemoration of
World Hearing awareness during the month of March.
Photo: Oteng Mpete 

Communication is a principal challenge for people with hearing loss. It can be difficult to negotiate everyday interactions, whether in the workplace, on the street, in classrooms, courts, during consultations with health professionals, or even when contacting the police. The World Health Organisation’s (WHO) World Hearing Day is an annual advocacy event held each year on 3 March to raise awareness and promote ear and hearing care across the world. In many countries this awareness campaign usually starts on 3 March but many continue to create awareness for the full month of March. 

Hearing loss is a global reality
According to Dr Magteld Smith, a researcher at the University of the Free State (UFS) School of Medicine’s Department of Otorhinolaryngology, unaddressed hearing loss poses a high cost for the economy globally and has a significant impact on the lives of those affected. Interventions to address hearing loss are available in South Africa but are not accessible or affordable for most citizens. This is partly because not only persons with hearing loss but also people with disabilities experience barriers in accessing services that many of us take for granted, including health, education, employment, and transport as well as information. These difficulties are exacerbated in less-advantaged communities.

“WHO estimates that there are more than 360 million persons with hearing loss globally. The statistics in South Africa are unreliable due to the different definitions used by Statistics South Africa and the absence of training of the officials who conduct and collect statistics concerning hearing loss in South Africa,” says Dr Smith. 

According to Dr Smith, analysis from retrospective studies reflects that about 17 out of 1 000 infants are born daily in South Africa with severe to profound hearing loss. However, Dr Smith states that the number could be higher because of late diagnosis, high levels of undiagnosed and untreated hearing loss. This excludes young adults, adults and the elderly as well as children with acquired (become deaf after birth) hearing loss.

Crisis that needs urgent intervention 
Dr Smith says hearing loss is an emergency which the South African government fails to prioritise. She says that research published confirms that the risk compounding the projected increase in hearing loss that comes with an ageing population. This is a looming and silent public-health crisis.
She believes that the government should take urgent action to align research-spending with the current and projected size and impact of hearing loss. It should also collaborate across related conditions, such as vision, neurodegenerative diseases and neurological conditions. Furthermore, the government needs, and is obligated, to deliver more accessible and integrated services and develop quality standards that take account of the whole pathway – linking public health, clinical and social needs.

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