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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

Curtains fall on Darwin lecture series

2010-02-03

The University of the Free State (UFS), in collaboration with the Central University of Technology and the National Museum in Bloemfontein, will host the final lecture of the Charles Darwin lecture series entitled "The story of life and survival" as part of the 200-years celebration of Charles Darwin’s birthday on Thursday, 11 February 2010.

The lecture titled Trends in evolution and their bearing on the future of humankind will be presented by Prof. Bruce Rubidge and Prof. Terence McCarthy from the University of the Witwatersrand and co-authors of the book The Story of Earth and Life.

Last year, when the year-long lecture series started, several lectures were presented by academics from various departments at the UFS.
Prof. Marian Tredoux and Mr Johan Loock from the Department of Geology presented lectures on The origin of our solar system and The geological evolution of our planet: the first billion years, respectively.

"Transitions and extinctions" was the topic of another lecture presented by Dr Jennifer Botha-Brink, a paleontologist at the National Museum and affiliated to the Department of Zoology and Entomology at the UFS. She discussed the causes of mass extinctions and their effects on the world's organisms.

The Department of Genetics also made their contribution to this lecture series in the form of two lectures on the genetic foundation of evolution presented by the Head of the Department, Prof. Johan Spies and Prof. Paul Grobler, an Associate Professor in the Department.

Next followed lectures on the evolution of the information and communication technology that were presented by the Departments of Communication Science, Chemistry, Physics, and Computer Science and Informatics, which focused on communication in a manufacturing environment, the knowledge explosion and the broadband universe.

This final lecture of the series will be presented in the CR Swart Auditorium on the UFS Main Campus at 18:00. Limited seats are available and bookings can be made by contacting Ms Isabel Human at humanci@ufs.ac.za or 051 401 2427 before or on Monday, 8 February 2010.

Media Release:
Mangaliso Radebe
Assistant Director: Media Liaison
Tel: 051 401 2828
Cell: 078 460 3320
E-mail: radebemt@ufs.ac.za
2 February 2010

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