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03 November 2022 | Story Leonie Bolleurs | Photo Supplied
Dr Liezel Rudolph
Dr Liezel Rudolph, a lecturer in the Department of Geography, recently returned from an expedition to Gough Island in the South Atlantic Ocean, where she was involved in research that aims to better understand the landscape evolution of some subantarctic islands and their response to long-term climate change.

A study of subantarctic islands tells us that, in general, the Southern Hemisphere is experiencing a rise in temperature, with an increase in rainfall in some locations, and other areas becoming drier. The annual temperature and rainfall average remain the same in some places, but there is a change in seasonality and synoptic weather events.

This is according to Dr Liezel Rudolph, a lecturer in the Department of Geography at the University of the Free State (UFS). She recently returned from an expedition to Gough Island in the South Atlantic Ocean, supported by the South African National Department of Forestry, Fisheries and the Environment, the National Research Foundation, and the Royal Society for the Protection of Birds.

This teacher of modules on Process Geomorphology and fieldwork techniques at the UFS, says the objective of her work on the island was to do a geomorphological survey of the island and explore the suitability of geochronological dating techniques on the island’s substrate. 

She explains that with geochronological methods one can determine the age of rock material as well as the rate of landscape change on the island. “In other words, dating when the volcano was formed and determining how long it takes for weathering to break down the rock material, and erosional processes to remove soil material.”
 
The research she is involved in, forms part of a SANAP-NRF-funded project, Sub-Antarctic Landscape Climate Interactions, which aims to better understand the landscape evolution of some subantarctic Islands and their response to long-term climate change. 

Studying the past to understand the present

According to her, studying landscape change enables one to better understand climate change over a long period of time. 

She states that the more regions are investigated, the clearer the picture of climate change will become. “The Earth is a large, complex system. By studying climate change in one location, one cannot simply assume that the same type and rate of change is occurring everywhere else. It would be like imaging a 1 000-piece puzzle by building with 10 pieces. The Southern Hemisphere is predominantly ocean, which makes it difficult to pin down land-atmosphere interactions – but the subantarctic islands give us the opportunity to create data points for the Southern Hemisphere, which would otherwise be a very large missing piece of the puzzle,” explains Dr Rudolph.

She says the interaction between ocean, atmosphere, and land remains complex and it is important to study the entire picture in order to fully understand how this is happening. Especially since the climate is changing at a drastic rate.

Dr Rudolph, whose research at the UFS is focused on constraining the last glaciation of subantarctic Marion Island though various proxies and dating techniques, says the subantarctic islands are very sensitive to changes in climate. 

A clearer picture of climate change

She was part of previous expeditions to the island. Although all these expeditions had different goals, according to her, they all aimed to answer the same questions, which are how the island’s landscape has developed throughout history and what the climatic drivers were during its evolution. 

“The landscape responds to changes in temperature and precipitation. Under colder, wetter conditions – when the island’s surface is subject to a freeze-thaw process – a range of peri-glacial landforms will develop. These landforms will still be evident in the landscape years later under a different climate, for example, warmer or drier conditions. We can study these landforms in real-time and establish whether they are actively forming or are relict features that formed under different climatic environments,” remarks Dr Rudolph.

The research, which is taking place in collaboration with the British Antarctic Survey, is co-led by Prof Werner Nel from the University of Fort Hare, and Prof David Hedding from the University of South Africa. 

• Dr Rudolph is grateful to the Government of Tristan da Cunha, which is responsible for managing the conservation of Gough Island, for permitting them to do scientific work on the island. 

News Archive

UFS appoints Director: KovsieRugby
2012-10-16

Michael Horak.
Photo: Johan Roux
16 October 2012

Mr Michael Horak has been appointed for a three year term by the UFS as Director: KovsieRugby. He began working at the university on 1 October 2012.

Mr Horak’s involvement in and experience of Super Rugby coaching, his working relationship with the Free State Rugby Union, his understanding of coaching structures and systems, as well as his knowledge of Kovsie players and present structures made him the obvious choice. He is also well positioned to see to it that the Shimlas are prepared for the next Varsity Cup tournament, which begins in February 2013.

His career includes the position of General Manager of the Cheetahs and Rugby Affairs at the Free State Rugby Union, a defence coach in Super Rugby, as well as senior Currie Cup teams and a rugby consultant for Grey College and Windhoek Gymnasium.

Some of his responsibilities as Director of KovsieRugby include the coaching of the Shimlas (head coach); the planning, development, management and implementation of a coordinated coaching and rugby programme throughout all sections of the UFS Rugby club; the development and implementation of innovative coaching techniques and methods in regards to players; as well as the development and implementation of a medium and long term strategy for the recruitment and retention of players that will be approved by the university to make success possible.

On his vision for rugby at the UFS, Mr Horak says: “It is a great privilege for me to be involved with KovsieRugby. Good work was done by Mr Jaco Swanepoel that I would like to take further to give players the best chance to be successful. Winning is what it is about and I am really looking forward to the challenges that lie ahead for all of us. My coaching team of Quintin Kruger, Hendro Scholtz and Barry Goodes is incredibly motivated to serve Shimlas rugby and to achieve success. We hope that everybody will support us and we are looking forward to seeing everybody at Shimla Park when the Shimlas win!”

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