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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

Medical students enrich lives through community service project
2016-03-18

Description: 2016 03 18 Outreach  Tags: 2016 03 18 Outreach

A group of third-year medical students organised a fun day for Ons Kinderhuis as part of their community service project.

As part of their curriculum, third-year MBChB students are required to complete a community service project in collaboration with a specific NGO in Bloemfontein. Not only do these projects serve an academic requirement, but also echo the spirit of service and compassion emblematic of the Human Project of the University of the Free State (UFS).

 

One group of students chose to pour their time and care into Ons Kinderhuis–home to 100 children with special needs. Since their involvement, these medical students have helped improve the home’s facilities and also hosted various fun days for the staff and children.

 

The latest fun day was celebrated on Saturday 12 March 2016. The festivities were kicked off in the morning by a game of soccer using the brand-new goal posts recently built by the medical students. It was difficult to decide who were more excited – the children or the staff – when some of the Cheetah rugby players joined the event. A slippery slide came in handy to wash off sticky hands and mouths and for little bodies with lots of energy the jumping castle was a perfect answer. Faces were painted and a banner created while music and the smell of the braai floated into the autumn air.

 

“I couldn't help but be proud of my team and thankful for this opportunity,” said Willem Potgieter, one of the student volunteers. Seeing the smiles on the children’s faces made it all worthwhile. “It was truly a humbling and a great learning experience for each and every one of us,” Willem said.

 

This group of medical students consist of Burger Oosthuizen, Marié Engelbrecht, Lourens Badenhorst, Dirki Wessels, Roodt Ehlers, Shirley-Louise du Plessis, Mariet Geldenhuys, Louise-Mari Zietsman and Willem Potgieter.

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