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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

Female-headed households more prone to economic strains due to rainfall variations
2016-02-02

Description: Martin Flatø  Tags: Martin Flatø

Martin Flatø
Photo: University of Oslo press

Research shows that a total of 41 % of South African (SA) households are led by women, and these households are twice as likely to be poor compared to other households.

Martin Flatø spent three months at University of the Free State (UFS), researching how female-headed households in our country are affected by variations in rainfall, which cause crop failures with their implications for rural economies.

He is a PhD student from the University of Oslo in Norway who was part of the 2014/15 Southern African Young Scientists Summer Programme (SA-YSSP) that was hosted by the UFS last year.

Flatø formed part of a group of international scholars who conducted research on how families led by females are affected by climate change. The group focused on the implications of the weather on crop failures and rural economies. Gender and household structures were studied to determine ways in which they are affected by economic fluctuations.
 
The research group’s preliminary findings indicate that female-headed households are more vulnerable to rainfall variation than households where there are adult residents or workers of both genders.

In view of the current water shortage in the Free State, as well as scientists’ projections that our country will be among the regions hardest hit by climate change in terms of a surge in temperature, Flatø’s collaborative research has substantial relevance.|

Grooming first class scientists
The SA-YSSP is a joint initiative of South African National Research Foundation and the International Institute of Applied Systems Analysis (IIASA). Its main aim is tackling challenges faced by the world at large and South Africa in particular.

Out of 24 PhD students from 18 countries and various academic disciplines, Flatø emerged as one of only three scholars to be awarded the Systems Analysis Scholarships for his outstanding science at the end of the programme.

World class mentorship
Prof André Pelser and Dr Raya Muttarak were Flatø’s SA-YSSP supervisors. Prof Pelser, of the UFS Department of Sociology, is a leading academic on population processes, and how they relate to local environmental issues in South Africa. Dr Muttarak is a research scholar at IIASA in Austria.

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