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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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A model of resilience – Dr Anja Botha probes into the ability to recover from trauma

2014-12-02

She may have been awarded her doctorate degree only in July 2014, but Psychology lecturer at the University of the Free State (UFS), Dr Anja Botha, is already making a name for herself with her latest research.

Her study aims to develop a model of resilience for South African adolescents exposed to trauma. “The broad field, within which I work, is that of Developmental Psychology, with a specific focus on child and adolescent development and therapy,” says Dr Botha.

Resilience studies are situated within Developmental Psychology since normal developmental tasks – such as achieving self-confidence and building supportive relationships – contribute greatly to children’s resilience. Resilience broadly refers to the individual’s ability to ‘bounce back’ after being exposed to adversity.

“The model of resilience which I compiled was a good fit for my participant group, indicating that the model explains the development of resilience in these adolescents well. The factors that I found to promote resilience in the South African context include various coping skills, intra- and interpersonal strengths, family involvement, and school engagement.

“Thus, aside from my passion for resilience studies, I am also very much interested in coping, strength-based interventions, parental guidance and school-based programmes.”

Dr Botha was awarded a Donald J Cohen fellowship in August 2014 during the 21st World Congress of the International Association for Child and Adolescent Psychiatrists and Allied Professions. The fellowship is in recognition of her work as an emerging international scholar in the field of child and adolescent mental health. This award was based on both her research as well as her involvement in the training of postgraduate students in child psychology.

She is currently supervising a number of master’s students’ research on various constructs related to resilience.

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