Latest News Archive

Please select Category, Year, and then Month to display items
Previous Archive
26 July 2021 | Story Nonsindiso Qwabe | Photo Nonsindiso Qwabe
On top of the Drakensberg. The ARU and Witsieshoek Mountain Lodge research team are, from the left: Grant Martin, Dr Ralph Clark, Jan van Niekerk, Prof Aliza le Roux, Prof Peter Taylor, and Dr Sandy Steenhuisen.

All mountains around the world have native and non-native species that are expanding their ranges quite dramatically; however, little research has been conducted towards understanding the long-term redistribution of species and the effects of global change on biodiversity.


The Afromontane Research Unit (ARU) on the University of the Free State Qwaqwa Campus – as part of the Mountain Invasion Research Network – has secured a two-year EU Horizon 2020 project under the Department of Science and Innovation, which will be looking at the mechanisms underlying the success and impact of range-expanding species on biodiversity and ecosystem functioning.

On Monday 19 July 2021, the ARU took a few of its researchers on a scenic helicopter ride to the summit of the Drakensberg for an alpine field-experiment site inspection of the Mont-aux-Sources peak, one of the highest sections of the Drakensberg range. This site has been identified for the project which the research unit will be leading on mountain research.

ARU Director, Dr Ralph Clark, said the project would explore the effects of global change, biological invasions (when species invade new geographic regions), as well as climate and land-use change. He said experiments were needed to explore the various possibilities and to test the extent to which species respond to experimental treatments. The project would therefore be conducting experiments for two years using open-top chambers – causing an increase in temperature of 3 or 4 degrees to what you find naturally – on plant species from lower down to the top of the mountain, to see how they function. “This will give us an idea of whether they will be able to survive in global warming scenarios. If temperatures get warmer, we might start seeing a lot of plants up here that we wouldn’t otherwise find here.”

Dr Clark said little is known about the long-term monitoring of species distribution and the effects of global change. Implementing the project in the Maloti-Drakensberg alpine area will therefore put the area in the global mountain research arena. The elevational gradient in the Maloti-Drakensberg Mountains provides space to explore the key processes underlying the variation in species elevation with climate change. “One of the things we don’t know much about are alpine systems. We are hoping to establish a long-term alpine research site and try to add as many studies as we can. The more science we can bring up here, the more we can know about mountain life. What happens on mountains has a lot of impact on social dynamics.

“This project is looking to see what is driving range expansion. Every mountain has its own context. In the Swiss alpine, fires are not a big factor, but fires are one of the biggest factors on our mountains. Some of our native and non-native species are therefore fire-driven, so as fire increases, you might have them spreading faster.”

Listen to the article:

News Archive

UFS PhD student receives more than R5,8 million to take agricultural research to African farmers
2015-07-06

Prof Maryke Labuschagne and Bright Peprah. (Photo: Supplied)

Bright Peprah, a Plant Breeding PhD student from Ghana in the Department of Plant Sciences at the University of the Free State received an award from the competitive Program for Emerging Agricultural Research Leaders (PEARL) of the Bill and Melinda Gates Foundation (BMGF) for one of his projects.

From the more than 750 proposals for funding that were received from African researchers, only 19 received funding from PEARL. PEARL is an agricultural initiative by the BMGF to take agricultural research products to African farmers. It also aims at involving the youth and women in agriculture.

Peprah’s proposal to introgress beta carotene into farmer-preferred cassava landraces was part of the final 19 proposals funded. The project is being led by the Council for Scientific and Industrial Research (CSIR)Crops Research Institute (CRI), and has the International Institute of Tropical Agriculture (IITA) and the International Centre for Tropical Agriculture (CIAT) as international partners with Peprah as the principal investigator.


The development of nutrient-dense cassava cultivars needs attention to eliminate the ramifications of malnutrition among the poor in an inexpensive and more sustainable way.
Photo: Supplied

He received $473 000 (R5,8 million) for his project on the improvement of beta-carotene content in cassava.

Peprah decided on this project because the populations of underdeveloped and developing countries, such as Ghana, commonly suffer undernourishment and/or hidden hunger, predisposing them to diseases from micronutrients deficiencies. “Vitamin A deficiency constitutes an endemic public health problem which affects women and children largely,” he says.

“In Africa, cassava is widely consumed by the populace. Unfortunately, in these areas, malnutrition is endemic to a significant extent, partly due to the low micronutrients in this tuberous root crop, which is a major component of most household diets. It is for this reason that the development of nutrient- dense cassava cultivars needs much attention to eliminate the ramifications of malnutrition among the poor in an inexpensive and more sustainable way.

“To date we have selected top eight genotypes from germplasm collected from the International Institute of Tropical Agriculture (IITA) which are high in carotenoids and also poundable, a key trait to Ghanaian farmers. These eight genotypes have been planted at different locations in Ghana, and being evaluated by different stakeholders (consumers, researchers, producers, commercial farmers, processors, etc.). If found suitable, the genotypes will be released to farmers, which we hope will solve some of the micronutrient problems in Ghana.

“My projects seek to develop new cassava varieties that will have both high dry matter and beta carotene which has been reported to be negatively correlated (as one increase, the other decreases). The breeding method will be crossing varieties that are high in beta carotene with those with high dry matter, and checking the performance of the seedlings later. Developing such new varieties (yellow flesh cassava) will increase their adoption rate by Ghanaian farmers,” he said.

Prof Maryke Labuschagne, Professor in Plant Breeding in the Department Plant Sciences and Peprah’s study leader, said: “This project has the potential to alleviate vitamin A deficiency in the West African region, where this deficiency is rampant, causing blindness in many people, especially children."

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