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08 September 2020 | Story Leonie Bolleurs | Photo Falko Buschke
Dr Falko Buschke says the iconic sandstone cliffs of the eastern Free State are key to protecting wild plants and animals from climate change.
The iconic sandstone cliffs of the eastern Free State are often the focus of paintings and postcards. Now, new research shows they also protect wild plants and animals from climate change. This finding is the outcome of a collaborative research effort by the University of the Free State (UFS); BirdLife South Africa; the Vrije Universiteit Brussel and KU Leuven, Belgium, which has recently been published in the journal Biological Conservation.

Mountains key for climate change mitigation

The study, led by Dr Falko Buschke from the Centre for Environmental Management UFS, used satellite data from NASA to track the ecological effects of wet and dry seasons, including the record drought of 2015/16. This showed how vegetation on the cool and moist mountain slopes was less affected by dry spells.

The complex physical terrain allows moisture to accumulate in the shaded parts of the south-facing slopes and ravines. This creates cool and moist habitats for plants and animals that wouldn’t survive in the rest of the hotter and drier landscape.

The team also discovered that these positive effects of mountains do not end at the foot of the mountain, but extend at least 500m into the flatter lowlands. “Presumably because water and nutrients accumulate in these surrounding buffers due to run-off,” says Dr Buschke.

Butterflies find safety on mountains

In addition to their high-tech analysis of the area, the team also relied on old-fashioned fieldwork to monitor butterflies over two years. “The data showed us how these insects find safety on mountains during harsh climate conditions and can then recolonise the rest of the landscape after conditions improve,” explains Dr Buschke. “This gives us clues on the best way to protect nature,” he adds. 

This study took place in the Rooiberge-Riemland Key Biodiversity Area (KBA), an area significant for maintaining global biodiversity. Several species of insects, reptiles, birds and mammals here occur nowhere else on earth. “If they disappear here, they will go extinct from the whole planet forever,” says Dr Falko Buschke. 

Despite its ecological significance, most of the area is covered by commercial farmland. So, the next stage of the project is exploring ways of protecting these important habitats while ensuring that farmers can continue producing food and supporting rural livelihoods. 

“Farmers hold the key to preserving biodiversity,” says Dr Buschke, “so conservation scientists need to work closely with them to ensure that we protect species for future generations.” 

News Archive

Prof Conradie makes UFS proud with prestigious Chemistry award
2015-03-25

Prof Jeanet Conradie and Dr Karel von Eschwege

Photo: Leonie Bolleurs

Prof Jeanet Conradie, Professor in the Department of Chemistry at the University of the Free State (UFS), has received the Merck Medal for 2014 from the South African Chemistry Institute (SACI), for her paper Redox potentials of ligands and complexes. A DFT approach, S. Afr. J. Chem. 2011, 64, 203-209.

Dr Karel von Eschwege, the co-author of the paper is also from the Department of Chemistry.

The medal is awarded to the senior author of the paper, published in the South African Journal of Chemistry in a specific field of chemistry, that is judged to have made the most significant contribution to the discipline. The award for 2014, covering papers published in the period 2010 to 2013, was in the field of Inorganic Chemistry.

As part of the award, Prof Conradie will deliver the Merck Medal Lecture at the presentation ceremony.

In 2014, Prof Conradie was runner-up in the senior category for Distinguished Women Researchers: Physical and Engineering Science in the Department of Science and Technology’s 2014 Women in Science Awards. The Academy of Science of South Africa (ASSAf) also invited her to become a member.

Prof Conradie believes to reach a goal, you have to utilise opportunities that come your way. “Remember, results speak for themselves. Any researcher can prove himself or herself this way. Nothing in life is for free; you need to work very, very hard. This is only possible when you love and enjoy your work,” she said.

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