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ARU pioneering mountain range-expanding project

26 July 2021 | Story Nonsindiso Qwabe | Photo Nonsindiso Qwabe

ARU Read more web — 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.”

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News Archive

Inaugural lecture focuses on Plant Pathology

2005-08-16

Prof Neal Mc Laren, from the University of the Free State’s (UFS) Department of Plant Pathology, will deliver his inaugural lecture on Wednesday 17 August 2005 at 19:00 in the CR Swart Auditorium on campus.

The topic of the lecture is Beyond the pathogen: revisited”.

Prof Mc Laren obtained his B Sc, B Sc (Hons) and M Sc (Agric) at the University of Natal and Ph D (Plant Pathology) from the University of Pretoria. In 1977 he was appointed as a research technician at the former Department of Agricultural Technical Services, was promoted to professional officer in 1983 and in 1995 to specialist scientist at the Agricultural Research Council. In 2003 he was appointed as Associate Professor Extraordinary in the Department of Plant Sciences at the UFS and in 2005 as a full-time Professor of Plant Pathology.

Prof Mc Laren has published 32 papers in accredited scientific journals or refereed proceedings which include two feature articles. He also has three book chapters to his credit. He has presented 35 local and 18 international conference papers and has been an invited/keynote speaker on a number of occasions. He has published 26 popular articles, co-supervised several post-graduate students and been an examiner of a number of dissertations/theses. He has acted as referee for numerous journal articles and was associate editor for African Plant Protection. In 1998 he received the ARC-President’s Award and in 1999, an award from the Sorghum Producers Organisation of the USA for outstanding research.

Prof Mc Laren’s principle area of interest has been diseases of sorghum with emphasis on ergot, damping-off and seedling blights, root rots and grain molds. In addition, root rots of maize and more recently, soybean rust have received attention. He has a particular interest in quantitative epidemiology.

For any enquiries, please contact Ms Joan Nel at (051) 401-9301.

Media release
Issued by:  Lacea Loader
   Media Representative
   Tel: (051) 401-2584
   Cell: 083 645 2454
   E-mail: loaderl.stg@mail.uovs.ac.za

16 August 2005

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