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05 June 2018 Photo Supplied
Digging up truth South Africa was way different to what you thought
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.

News Archive

Traditional medicine can play important role in modern drugs discovery
2014-11-11

Indigenous knowledge possesses a great potential to improve science. Making use of this source may lead to advanced technological innovations. This is according to Dr Sechaba Bareetseng, UFS alumnus and Indigenous Knowledge Systems (IKS) Manager at the Council for Scientific and Industrial Research (CSIR).
Dr Bareetseng recently addressed the seventh annual IKS symposium on the Qwaqwa Campus.
“Interfacing indigenous and local knowledge with scientific knowledge has the potential of encouraging and developing inventions, especially in the pharmaceutical industry,” said Dr Bareetseng.
 
“Such interfacing can also enable access to both sets of knowledge without any discrimination whatsoever. It would also encourage co-existence that would improve understanding between the two.”
 
“Traditional medicine,” said Dr Bareetseng, “can play an extended role in modern drugs discovery as it is already happening in Botswana and New Zealand. These two countries are leading this wave of new thinking in as far as drug development is concerned.”
 
Dr Bareetseng also called on established researchers to start embracing the local communities into their research.
 
“Contemporary scientific research demands that local communities must co-author research conducted within and with them by the universities and research institutions. This would help in maintaining trust between the researchers and the communities that feel exploited. Regular feedback would also make communities feel part of the developments,” Dr Bareetseng argued.
 
He further called on the pharmaceutical companies specifically and researchers in general to convert valuable indigenous knowledge and resources into products and services of commercial value. “Plants, the ecosystem and indigenous knowledge must be preserved to provide a source of income for the local communities. Communities must also be protected from foreign exploitation of their intellectual property.”
 

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