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05 July 2022 | Story Mandi Smallhorne
Cathedral Peak

Why mountain research matters 

“I don’t think South Africa is prepared for the possibility of a Gauteng Day Zero drought,” said Professor Francois Engelbrecht, director of the Global Change Institute at the University of the Witwatersrand. 

Professor Engelbrecht was a keynote speaker at a session of the Southern African Mountain Conference 2022, held in the Drakensberg in mid-March this year and supported by, among others, the Afromontane Research Unit at the University of the Free State (UFS). The session, hosted by international network, GEO Mountains, looked at Long-term monitoring activities and associated data availability for climate change-related applications across Africa’s mountains: status quo and next steps.

The professor went on to say we came very, very close in the 2015-2016 drought, when the Vaal Dam dropped to 25% of capacity. Had it dropped just a bit more, to 20%, the most densely populated province in South Africa, our economic hub, would have been in serious trouble, as there would have been too little water to enable pumping the last dregs into the province.

What’s the link between a Day Zero event in Gauteng and data about mountain environments?

Think of the water towers that dot the Highveld landscape in Gauteng, very visible to residents of the suburbs. Mountains can be seen as massive ‘water towers’ that provide water to people hundreds, even thousands, of kilometres from their foothills. As Dr James Thornton of GEO Mountains, co-host of the session, explained, mountains provide a flow of ecosystem services; water provision is just one of them, but it is of critical importance. “The mountains are crucial for this, due to the orographic enhancement of precipitation.” The shape and topography of mountains (their orography), forces moist air upwards into cooler air at higher elevations – an effect called ‘orographic uplift’ – so that vapour held in the air condenses into water. 

So as moisture-laden air sweeps in from the warm Indian Ocean to the east of us, it encounters the upward thrust of the long Drakensberg chain of mountains, from the Eastern Cape through Lesotho and KwaZulu-Natal and on, up to the Wolksberg Mountains in Limpopo. The upward movement of the air into colder regions triggers precipitation – rain, mist, sometimes snow.

And that moisture, falling on the soil and rocks in cool mountain air, is also less likely to evaporate and return rapidly to the atmosphere, as it might do on the coastal plains and lowlands.

The result? The most obvious consequence is waterfalls glittering in the mountain cliffs and swollen streams rushing down the slopes. Look at maps and you’ll see rivers springing from mountain sources everywhere in the world, like the Tugela heading east and the Orange flowing west from the Drakensberg in South Africa and Lesotho, or the Ganges and Indus rising in the Himalayas and the Rhine and Rhône rising in the Alps.  

Mountain water also seeps into the ground, making its way through soil and rocks and recharging the groundwater within and beyond the mountains and their foothills. This recharge of the water table from high up in the mountains also contributes to streams and rivers that supply so much of our water needs, scientists have shown.  

Mountain water in Gauteng


Gauteng residents are well aware of the role of the Vaal River in the Vaal Water Supply System, but do we understand just how much of our water originates in the Drakensberg? According to the Water Research Commission “transfers from the Maloti Drakensberg (34.4%) and the Northern Drakensberg SWSA (18.9%)” are critical to our water supply. That’s a little more than half our water in Gauteng coming from the Drakensberg.

Engelbrecht and his co-authors wrote a few years ago: “Except for the Southern Cape, the Drakensberg is the single most important source of water in Southern Africa and supplies regions where the bulk of the population resides.” (The Drakensberg Escarpment as the Great Supplier of Water to South Africa, S.J. Taylor, et al, in Developments in Earth Surface Processes Volume 21, Mountain Ice and Water, Investigations of the Hydrologic Cycle in Alpine Environments.) But, they added, due to population growth and other pressures, “In South Africa, it is now expected that demand for water will exceed supply by 2025 if nothing is done to supplement current water resources.”

That in itself is reason enough to focus on monitoring our mountains, and to support scientists observing and gathering data there. But add that to Professor Engelbrecht’s prediction that “multiyear El Nino-type droughts may plausibly occur from the mid-century (2030-2060) onwards” due to the climate change crisis, and it’s clear that we desperately need to understand the detail of how our mountains provide us with water; we urgently need to understand what is changing in the mountains.

Research matters

The ongoing and rapid changes we’re seeing in these very sensitive environments, from changing precipitation patterns, to changing land-use, to increases in population, is why we really need to “monitor and track these changes, to understand the biophysical processes and their interaction with society, and to be able to better estimate the chance, for instance, of future extreme droughts on a more local scale so we can develop measures for mitigation and adaptation,” said Dr Thornton. Better management of upstream water resources – such as the massive ‘water tower’ in the Drakensberg and elsewhere – is one tactic we should be vigorously pursuing.

There is a paucity of data about our precious mountainous areas across the world, but especially in Africa, and one of the messages of this workshop and of the conference as a whole was the importance of not just doing the monitoring and gathering of data, but making it readily accessible to all. 

Dr Susan Janse van Rensburg (of the South African Environment Observation Network or SAEON, a national facility of the National Research Foundation) spoke about the in situ environmental monitoring that is being done in important mountain areas, including Cathedral Peak, the heart of the Central Drakensberg where the conference was being held. She introduced SAEON’s new Data Portal for researchers to access and share data about mountains – and not just in South Africa, but across the whole continent. 

Omar Seidu gave a presentation on an initiative called Digital Earth Africa which collates and curates satellite data – including data on mountains. And GEO Mountains itself runs inventories which “seek to identify, link up, and make accessible existing data and information resources across the world’s mountains”.

“We’re trying to make it straightforward for researchers on the ground to make their datasets available to anybody if they choose to do so,” said Dr Thornton.

Research, observations and data-gathering on the ground (and from satellites) is the foundation for intelligent analysis, which results in solid evidence that can guide policymakers and the public to make the best choices. Mountains, our water towers, have perhaps not been enough of a focus for society in the past; information about their vital role in something as basic as water provision, and better understanding of the processes that furnish us with water, will surely help us to both mitigate and adapt to a future in which water scarcity looms so large.

News Archive

New South African literature festival offers something for everyone
2016-03-23

The University of the Free State (UFS) in partnership with the Vrystaat Arts Festival is proud to present the first literature festival in central South Africa from 11-16 July in Bloemfontein. Afrikaans books and writers will feature prominently, in addition to other indigenous languages such as Sotho and Zulu. Several authors will be celebrating literature in English.

Vice-Chancellor and Rector of the University of the Free State Professor Jonathan Jansen says:  ‘The aim of the festival, part of the bigger Vrystaat Arts Festival, is to strengthen a culture of reading, not just in the Free State but nationally. The festival will market books as well as embrace new developments in the field of writing. I am incredibly excited about this inaugural event, which the university will support in the long-term.’

The theme of this year’s literature festival is ‘Our Africa’ and promises to provide all booklovers and readers tantalizing food for thought. Some of the authors attending the festival include, amongst others, the Hertzog-prize winner Adam Small, celebrating his 80th birthday as well as the release of his latest drama. Another legendary writer, dramaturge and actor, John Kani, will be speaking at the festival about his most recent theatre productions. The ever popular Marita van der Vyver will be visiting the festival from France, and the highly acclaimed writer Zakes Mda, will be flying in from the United States to deliver the inaugural Sol Plaatje Lecture. Mda, also a visual artist, will have some of his works on display.

Other international guests include Chika Unigwe, originally from Nigeria, who rose to fame in Belgium, and was described by South African writer Zukiswa Wanner as one of the five most renowned writers from Africa. Also attending will be Iranian writer Kader Abdolah, whose novels have been translated into more than 21 languages. Abdolah, a political refugee who escaped from Iran to the Netherlands in the 1980s, went on to establish himself as one of the most prominent Dutch novelists. Wilfried N’Sondé, originally from the Congo, who now lives in France, will also be a festival guest.
 
Theo Kemp, Coordinator of the Literature Festival says: ‘It is critical for us that robust debates on current affairs takes place as part of the festival. Festival participants will be able to engage with a range of authors on topical and sometimes sensitive issues. We welcome this debate – it is rare to have a platform where we can argue passionately yet respectfully about the future of our country in an international context.’

Critical topics covered include themes such as the state of Africa’s economies (with analyst and writer Victor Kgomoeswana); the relevance of the Anglo-Boer War in contemporary society (with Albert Blake and Johan Kruger); philosopher Achille Mbembe talking with Kevin Bloom and Richard Poplak about the changing face of Africa; and the political analysts Susan Booysen and John Matisonn examining the South African landscape in a post-municipal election environment.

Theuns Eloff, previous Rector of the University of Potchefstroom, whose new book What now, South Africa is launched this year, will partake in discussions around current affairs. So to Melanie Verwoerd and Sonwabiso Ngcowa aim to explore the phenomenon of the so-called ‘born frees’ in their book 21 at 21: The Coming of Age of A Nation.

Climate change and its impact on the Free State’s environment is another critical topic covered by Bob and Mary Schole with their book launch of Climate Change: Briefings from Southern Africa.

Festival goers can also look forward to a poetry café, where music and poetry will be mixed; informal visits with writers around food and story telling; as well as word and music productions where popular travel writers such as Johan Bakkes, Dana Snyman, Erns Grundling and Pienkes du Plessis will be present.

Writers will also be involved in a range of panel discussions – including on the ethics of writing biographies (Lindie Koorts and Mark Gevisser); alternative narratives of South Africa in the eighties (Ivan Vladislavic and Johann Roussouw); and discussions with writers such as Hans du Plessis, Bernard Odendaal, Hanlie Retief, Rudie van Rensburg and Irma Joubert.

Workshops will also feature in the programme with writers such as Francois Smith and Henning Pieterse, associated with the Department of Afrikaans and Dutch at the UFS, offering short courses on creative writing; while Johann Roussouw from the Department of Philosophy at the UFS will present a series of talks on the books of Karel Schoeman.

The final festival programme will be launched on 28 April 2016.

The Vrystaat Literature Festival was initiated by the University of the Free State in partnership with the Vrystaat Arts Festival. Project sponsors include Media24, ATKV, Vlaamse Letterenfonds, Institut Francais, Nederlandse Letterfonds, Van Rensburg Pataloe and the Flemish Embassy.
 

For further enquiries contact:

Theo Kemp
theo.kemp@volksblad.com
+27(0)83 462 9613
www.vrystaatartsfestival.co.za

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