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20 July 2020 | Story Leonie Bolleurs | Photo Supplied
The view from one of the offices in the Marion Island research station, with fresh snowfall in the interior of the island in the background.

Liezel Rudolph, lecturer and researcher in the Department of Geography at the University of the Free State (UFS), is strongly convinced that the Southern Hemisphere’s past glacial cycles will provide valuable insights to help predict and prepare for future climate change. Climate is changing fast and the magnitude of change we have seen over the last 30 years has taken a hundred or several hundred years to occur in the past. 

It is not only temperatures that are rising, but changes in wind patterns, rain cycles, oceanic circulation, etc., are also observed. As we do not know how the earth will respond or adapt to such rapid and drastic changes in climatic patterns, this poses various threats.

Link between landscape responses and climate change

Rudolph focuses her research on reconstructing the past climate of Marion Island. 

She had the wonderful opportunity to visit the island for the past three years with study and project leaders, Profs Werner Nel from the University of Fort Hare and David Hedding from UNISA, she departed on a ship to Marion Island to conduct fieldwork.They published their research findings of fieldwork conducted in 2017 and 2018.  

According to Rudolph, research in Antarctica, the Southern Ocean, and islands such as Marion Island is very important. South Africa is the only African country with research stations that have the ability to explore these regions.

“Marion Island has many landforms that could only have been created by glacial erosional or depositional processes, with glaciers currently absent from the island. To determine when the island was last in a full glacial period, we date the formation ages of these landforms.”

“In the short time we have been visiting the island, it was impossible to notice any drastic changes in the island climate. That is why we use these very old landforms to tell us more about periods before humans visited the island,” she says. 

Rudolph believes that understanding the link between landscape responses and climate change of the past can help to better predict some of the climate change processes that are currently threatening the planet.

“There’s a principle in geography called ‘uniformitarianism’, whereby we assume that the earth-surface processes we observe today, are the same as those that have been active in the past,” says Rudolph.

As scientists, they thus look at evidence of past geomorphic processes (which remain in the landscape in various forms, e.g. residual landforms, stratigraphic sequences, etc.) to piece together what the past climate was like. In the same way, they also use this principle to predict how certain earth processes will change in the future, along with climate changes.

“In return, we understand how the climate and the earth’s surface interact, and we can better predict how the earth will respond to climate change,” Rudolph adds. 

Society to play its part in climate change

In the long run, we as the public should play our part in readying society for the effects of climate change. 

Rudolph says society can play a positive role in terms of climate change by educating themselves with unbiased, scientifically sound information on the true state of climate change and by responding within their own spheres of influence.

“Don’t leave everything up to politicians and policy. As the public, you can start to make progress by assessing the effects that climate change may have on your industry, business or society, and strategise on how to adapt your processes to deal with these changes.”

“Be responsible with our natural resources, reduce your waste, support local businesses that are sustainable, and volunteer at a local environmental protection/clean-up organisation. All the small efforts will eventually add up to substantial change,” she says. 

News Archive

Fun and camaraderie key to Vishuis rugby success
2017-09-27

Description: TEDxUFS   Tags: TEDxUFS

The forwards of Vishuis laid a strong foundation in
the K1 rugby final against Kagiso. This helped them
to secure a win of 38-16.
Photo: Marelize van Niekerk

They have not only been dominating the residence rugby scene at the University of the Free State over the past few years, but also nationally. Although they might experience added pressure as favourites, a key ingredient to Vishuis’ success story is their enjoyment of the game and their camaraderie.

According to Henco Posthumus, the Vishuis captain, they realise that it still remains residence rugby. “The guys pitch up at practice because they want to play, not because somebody begged them to.”

Comfortable triumph in final

Vishuis claimed their fifth Varsity Cup Koshuis title earlier this year, and will defend their national title after being crowned Kovsie residence champions on 8 September 2017. They beat Kagiso comfortably 38-16 in the K1 final, after leading by 31-9 at half-time.

Posthumus says the fun element is often forgotten, but not at Vishuis. He says it is not just about the first team either. “Almost every house member, no matter if he studies medicine or if he hasn’t played rugby before, is playing a bit of rugby on a Friday evening. That is also why we, as a fairly small residence, can field five teams.”

More than just a game

Although their proud record serves as motivation, it is about more than just rugby. “The guys grow together in different ways. It is an honour to see how they grow during a season, also spiritually.”

They have been lucky not to suffer many serious injuries over a number of seasons, Posthumus says. “We are privileged to have 110 years of history behind our residence, and people from within and outside buy into who we are.”

“Our (new) coach, Zane Botha, is also a valuable acquisition. He has taken our rugby to the next level.”

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