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05 June 2018
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Archaeological excavations in the Wonderwerk Cave, north of Kuruman in the Northern Cape.
Research fellow Dr Lloyd Rossouw from the Department of Plant Sciences at the University of the Free State (UFS) recently published an article in the Nature Ecology and Evolution journal with Dr Michaela Ecker from the University of Toronto as lead author, and Dr James Brink, research fellow at the UFS Centre for Environmental Management. The findings described in “The palaeoecological context of the Oldowan-Acheulean in southern Africa” provides the first extensive paleoenvironmental sequence for the interior of southern Africa by applying a combination of methods for environmental reconstruction at Wonderwerk Cave, which have yielded multiple evidence of early human occupation dating back almost two million years ago.
Where water once was
The Wonderwerk Cave is found north of the Kuruman hills (situated in Northern Cape) a 140m long tube with a low ceiling. The surroundings are harsh. Semi-arid conditions allow for the survival of only hardy bushes, trees, and grasses. But during the Early Pleistocene, stepping out of the Wonderwerk Cave you would have been greeted by a completely different site, the researchers found. Using carbon and oxygen stable isotope analysis on the teeth of herbivores (Dr Ecker), fossil faunal abundance (Dr Brink), as well as the analysis of microscopic plant silica remains (phytoliths) excavated from fossil soils inside the cave (Dr Rossouw), the results show that ancient environments in the central interior of southern Africa were significantly wetter and housed a plant community unlike any other in the modern African savanna.
What difference does it make?
While East African research shows increasing aridity and the spread of summer-rainfall grasslands more than a million years ago, the results from this study indicate an interesting twist. During the same period, shifts in rainfall seasonality allowed for alternating summer and winter-rainfall grass occurrences coupled with prolonged wetlands, that remained major components of Early Pleistocene (more or less the period between one and two million years ago) environments in the central interior of southern Africa. That means our human ancestors were also living and evolving in environments other than the generally accepted open, arid grassland model.
Two Kovsie women involved in international sports events
2012-05-14
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Hetsie Veitch and Ebeth Grobbelaar
Photo: René-Jean van der Berg
14 May 2012
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The organisers of two international sports events will depend on the expertise of two Kovsie women to make the events a major success.
The honour to be involved in international sports event has befallen Ms Hetsie Veitch and Ms Ebeth Grobbelaar.
The honour is the result of many years’ hard work and devotion in their respective fields.
In June, when the USA chooses the team to represent it at the 2012 Paralympic Games in London, Ms Veitch will be one of the classifiers who will determine in which categories athletes may compete.
Ms Veitch, Head of the Unit for Students with Disabilities at the University of the Free State (UFS), has been invited to be a member of the Classification Panel at the final USA Paralympic athletics trials. The trials take place from 27 June to 1 July 2012 in Indianapolis, Indiana, in the USA.
Ms Veitch and four other classifiers, two from Brazil, one from Canada and one from the USA, will test and verify the international classification status of the American athletes. No athlete will be allowed to take part without their classification being verified by the panel.
Ms Veitch, who recently achieved the status of International Paralympic Committee (IPC) Athletics Classifier, the highest achievement for a classifier in sport for the disabled, said that this category of sport has always been her passion.
“To have the opportunity to be involved in the classification of the USA team for the London 2012 Paralympic Games is a huge honour. I am going to start working on being chosen for the official IPC classification panel for the 2016 Paralympic Games in Brazil.”
Ms Grobbelaar, Assistant Director of the South African Testing Laboratory for Prohibited Substances at the UFS, was invited to be involved in the Drugs Control Centre in the unit against prohibited substances which will test sportsmen and women during this year’s Olympic Games in London.
Ms Grobbelaar said that even though the future of sportsmen and women would be in her hands, she is totally capable of carrying out the task that awaits her.
“I will be part of the laboratory team who will test the athletes’ samples for prohibited substances. I was part of the South African team who tested samples in our own laboratory in 2010 during the FIFA Soccer World Cup, as well as for the All Africa Games. The task is one I perform every day in our own laboratories. Each sample that I analyse determines an athlete’s future. The circumstances during the Olympic Games are different, but the work remains the same.”