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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 establishes a Postgraduate office
2007-07-18

The University of the Free State (UFS) will establish a postgraduate office that will serve as a one-stop service for the co-ordination of academic support services for postgraduate students.

According to the Director: Research Development at the UFS, Prof Frans Swanepoel, the primary purpose of the Postgraduate Office is to provide co-ordination and support services for postgraduate students and postdoctoral fellows, as well as academic staff across the University.

“Guided by values such as intellectual inquiry, innovation, collegiality, integrity and efficiency, the Postgraduate Office will seek to foster a challenging, inclusive and supportive environment for postgraduate teaching, learning, research and scholarship; and will strive to engage students in the vibrant life of a research university”, Prof Swanepoel said.

All sectors of the University, namely students, faculties and staff, stand to benefit from the establishment of this office. Amongst other benefits for these sectors, postgraduate students and postdoctoral research fellows will have their interests promoted in synergy with faculty and departmental facilities. On the other hand, the office will provide a critical resource to the faculties in the form of a single database of postgraduate students, postgraduate topics, supervisors and funding opportunities. Furthermore, it will serve as a useful resource and base for training and information for younger and less experienced staff members.

The establishment of this office will be undertaken in two phases. The first phase will focus on the most critical areas that will make an immediate impact and the second phase on those areas that are not as urgent.

Areas that will be prioritised include the appointment of a manager and co-ordination of stakeholders, the provision of information and communication, useful resources for the UFS, policy administration and monitoring, postgraduate supervisors’ facilitation, recruitment activities, advice and referral, and postgraduate scholarship and bursary management.

The less urgent components of the office will be the development and implementation of academic and professional support programmes, the formation of a research information commons to create an integrated learning environment for postgraduate students, and the development of a postgraduate association or a postgraduate students’ liaison committee to provide a recognised channel of communication between postgraduate students and the University authorities.

The Postgraduate Office will form a vital component of the Directorate Research Development (DRD) at the UFS because of its experience and a noteworthy track record with regard to a facilitative and co-ordinating role that would be essential for the office.

“Establishing the Postgraduate Office as part of the Directorate would give the Centre the necessary links to the research-related issues that are important to most of the postgraduate students at the UFS. Of essential importance will be the linkages with the full spectrum of Strategic Clusters”, Prof Swanepoel explained.

“An important component of the Postgraduate Office will be related to international students and international opportunities for UFS postgraduate students. As the Office for Internationalisation has similarly been placed within the Directorate, the work of the Postgraduate Office will be facilitated by similar placement within the same Directorate”, he concluded.

Media release
Issued by: Mangaliso Radebe
Assistant Director: Media Liaison
Tel: 051 401 2828
Cell: 078 460 3320
E-mail: radebemt.stg@mail.ufs.ac.za  
18 July 2007
 

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