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04 January 2021 | Story Andre Damons | Photo Supplied
From left to right: Makashane Ntlhabo (PhD student at the Centre for Gender and Africa Studies), Dr Tascha Vos (Centre for Environmental Management) and Dr Stephanie Cawood (Centre for Gender and Africa Studies).

Two researchers from the University of the Free State (UFS) are studying how water quality could be used at informal heritage sites to measure the health of the sites. They are also aiming to test the workability of their Rapid Integrity Appraisal (RIA) bio-cultural screening model as a way to safeguard informal heritage sites and cultural heritage.

Dr Stephanie Cawood from the Centre for Gender and Africa Studies and Dr Tascha Vos from the Centre for Environmental Management,a limnologist with a doctorate in environmental management, hope to achieve wider application for the RIA model beyond the eastern Free State’s sacred sites and to consider the feasibility of RIA to inform the monitoring and management regimes of formal heritage sites as well.

This interdisciplinary research is unique and brings together the science of aquatic ecology (limnology) as well as the cultural and social human dynamics of heritage, pilgrimage and ritual and how they interact.

Sacred sites and places of pilgrimage

“In previous research, we documented a link between the environmental integrity and public health of informal heritage sites in the eastern Free State and the cultural heritage associated with these sites. They are considered sacred sites and places of pilgrimage and include various sacred valleys and caves in the Mohokare Valley in the eastern Free State along the South Africa-Lesotho border.

“We detected a cycle of risk between human, animal and ecological risk factors where water quality is representative of ecological risk and cultural practices associated with the intrinsic heritage of the sites. Based on this cycle of risk and conventional aquatic biomonitoring models, we developed a unique bio-cultural screening model called Rapid Integrity Appraisal specifically designed for the biomonitoring of informal heritage sites such as the eastern Free State sacred sites,” the two researchers explain.

Rapid Integrity Appraisal

According to Dr Cawood, who is very knowledgeable about pilgrimage movement in the Mohokare Valley and has conducted regular fieldwork trips to these sites from 2007-2010, RIA is a bio-cultural screening model to determine the need for intervention at informal heritage sites.

Says Dr Cawood: “Ideally, a complete bio-cultural screening model would include all existing bio-monitoring indices. However, in a country such as South Africa which has immense social challenges, the formal heritage sector is under-resourced. Resources are even scarcer for informal heritage management.”

Dr Vos says this means that the full spectrum of biomonitoring indices simply cannot be justified for informal heritage sites. Therefore, in the specific context of limited resources in terms of time, expertise and funding, a pragmatic view has to be taken to rapidly and efficiently assess the integrity of informal sites.

“We found certain analyses related to water quality more valuable for extrapolation than others and we conceptualised these parameters as forming the RIA model. The idea behind RIA was to find the most expedient and efficient mode to rapidly assess the integrity of a particular informal heritage site. RIA is not meant to be a comprehensive method but is rather aimed at collecting baseline data for immediate decision-making and the possible implementation of a full water-quality assessment, or perhaps a complete bio-cultural screening,” according to Dr Vos.

Great potential

They have recently been funded by the UFS for this interesting interdisciplinary project which started in 2018. They have already completed the fieldwork and are now left with the data analysis and interpretation and the writing of articles. Unfortunately, the coronavirus pandemic negatively affected their progress in this regard, but they hope to finalise the project next year.

According to the researchers the project has great potential for application in heritage management anywhere, not only for the monitoring of informal heritage sites, but for poorly managed tourist sites that may be ecologically compromised.

News Archive

Fracking in the Karoo has advantages and disadvantages
2012-05-25

 

Dr Danie Vermeulen
Photo: Leatitia Pienaar
25 May 2012

Fracking for shale gas in the Karoo was laid bare during a public lecture by Dr Danie Vermeulen, Director of the Institute for Groundwater Studies (IGS). He shared facts, figures and research with his audience. No “yes” or “no” vote was cast. The audience was left to decide for itself.

The exploitation of shale gas in the pristine Karoo has probably been one of the most debated issues in South Africa since 2011.
 
Dr Vermeulen’s lecture, “The shale gas story in the Karoo: both sides of the coin”, was the first in a series presented by the Faculty of Natural and Agricultural Science under the theme “Sustainability”. Dr Vermeulen is a trained geo-hydrologist and geologist. He has been involved in fracking in South Africa since the debate started. He went on a study tour to the USA in 2011 to learn more about fracking and he visited the USA to further his investigation in May 2012.
 
Some of the information he shared, includes:

- It is estimated that South Africa has the fifth-largest shale-gas reserves in the world, following on China, the USA, Argentina and Mexico.
- Flow-back water is stored in sealed tanks and not in flow-back dams.
- Fracturing will not contaminate the water in an area, as the drilling of the wells will go far deeper than the groundwater aquifers. Every well has four steel casings – one within the other – with the gaps between them sealed with cement.
- More than a million hydraulic fracturing simulations took place in the USA without compromising fresh groundwater. The surface activities can cause problems because that is where man-made and managerial operations could cause pollution.
- Water use for shale-gas exploration is lower than for other kinds of energy, but the fact that the Karoo is an arid region makes the use of groundwater a sensitive issue. Dr Vermeulen highlighted this aspect as his major concern regarding shale-gas exploration.
- The cost to develop is a quarter of the cost for an oil well in the Gulf of Mexico.
- Dolerite intrusions in the Karoo are an unresearched concern. Dolerite is unique to the South African situation. Dolerite intrusion temperatures exceed 900 °C.

He also addressed the shale-gas footprint, well decommissioning and site reclamation, radio activity in the shale and the low possibility of seismic events.
 
Dr Vermeulen said South Africa is a net importer of energy. About 90% of its power supply is coal-based. For continued economic growth, South Africa needs a stable energy supply. It is also forecast that energy demand in South Africa is growing faster than the average global demand.
 
Unknowns to be addressed in research and exploration are the gas reserves and gas needs of South Africa. Do we have enough water? What will be the visual and social impact? Who must do the exploration?
 
“Only exploration will give us these answers,” Dr Vermeulen said.

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