Latest News Archive

Please select Category, Year, and then Month to display items
Previous Archive
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

Dr Chantel Swart the ‘Expert on Stage’
2013-06-04

 

Presents Extraordinary Findings at International Nanomedicine Conference.
Photo: Sonia Small
04 June 2013

Dr Chantel Swart, an alumnus of the Prestige Scholars Programme (PSP) from the Department of Microbial, Biochemical and Food Biotechnology, is an invited “Expert on Stage” at the 4th International Nanomedicine Conference to be held in Sydney, Australia from 1 – 3 July 2013.

She is to share the podium with world authorities in nanomedicine.

Dr Swart’s presentation, “A New Nanotechnology for Nanomedicine”, will convey findings that made international headlines. She is part of the nanotechnology group of Prof Lodewyk Kock that discovered gas bubbles inside cells when using Auger-architectomics, a nanotechnology they developed in 2010. This nanotechnology is used to track nanomedicine inside cancer cells in collaboration with the Mayo Clinic in the US.

The Kock Nanotechnology Group includes scholars from the departments of Microbial, Biochemical and Food Biotechnology, Physics, Chemistry, the Centre for Microscopy (all from the UFS) and South African Breweries. Their breakthrough is also showcased on the cover of all issues of 2013 FEMS Yeast Research, a leading journal in yeast research. BiotecVisions and Global Medical Discovery (GMD) both selected this work for worldwide promotion at the end of 2012.

Dr Swart’s future research will use this newly-developed nanotechnology to visualize and hence explore the exposed nano-world. This will include work on the architecture of cells and effects of various drugs on cell metabolism.

A virtual tour is available at: http://vimeo.com/user6296337/videos.

We use cookies to make interactions with our websites and services easy and meaningful. To better understand how they are used, read more about the UFS cookie policy. By continuing to use this site you are giving us your consent to do this.

Accept