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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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Shimlas still the only unbeaten side in 2015 Varsity

2015-03-18

The Shimlas remain the only unbeaten side in this year’s Varsity Cup rugby tournament after their bonus-point 44-24 win against the University of Cape Town Ikeys in Bloemfontein.

The home side managed a very comfortable 34-8 lead in the first half against the defending champions Ikeys. No matter how hard the Ikeys fought back, the Shimlas win was inevitable, and secured the first ever home semifinal at the UFS.

It was in the second minute that Shimlas’ Gerhard Olivier went over the try line. The Shimlas continued to press forward, and kept the game play primarily in the UCT half of the field. By the time the first Strategy Break came along, the Shimlas already had a 21-0 lead over their visitors. The Ikeys did manage one converted try before halftime, still leaving the home side with a 34-8 lead.

After halftime, there was still no stopping the Shimlas. Even when UCT’s attempt at a comeback saw them scoring their second converted try, the point difference were still 18 points. Shortly after, Olivier scored his third try for the Shimlas. The Ikeys’ response to this was scoring a third try in their comeback effort, putting the scoreboard at 39-24 with Shimlas still in the lead after 65 minutes.

Despite Ikeys’ attempt for their bonus point try near fulltime, Shimlas’ counter-attack saw their replacement player Boela Venter cross the try line for the last time to secure a 44-24 win for the home side.

The Shimlas will host North-West University’s Pukke side at Shimla Park in the last round of the tournament this coming Monday. For the first time since the Varsity Cup’s inauguration in 2008, the UFS side has already secured a home semifinal for the week after.

Shimlas point scorers:

Tries: Gerhard Olivier (3), Johan van der Hoogt, Danie Maartens (2), Boela Venter
Conversion kicks: Niel Marais (3)

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