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19 December 2018 | Story Leonie Bolleurs | Photo Leonie Bolleurs
Water management reseachers
Marinda Avenant, Dirk Jungman and Niels Schütze are working on a project proposal for a decision support system that will assist local authorities with sustainable water resources management. Both Dirk and Niels are from the Technical University Dresden in Germany.

Climate change has a strong effect on the water cycle and is likely to lead to a multitude of hazardous weather events such as droughts, heavy rainfall and floods in Southern Africa.

The Technical University of Dresden, in Germany, in collaboration with the Centre for Environmental Management at the University of the Free State (UFS), earlier this year received seed funding to develop a project proposal for a study on the risks of climate change.

At a recent workshop, universities (including the Central University of Technology, University of KwaZulu-Natal, University of Pretoria, Cape Peninsula University of Technology and the Namibia University of Science and Technology), Weather SA and the Global Water Partnership of Southern Africa) as well as companies from the public and private sectors and universities in Germany (Technical University Dresden, United Nations University Flores, Büro für Angewandte Hydrologie, and WISUTEC Chemnitz), collaborated to discuss the project proposal.

The proposal to obtain funding for the study will be submitted in May 2019.

 

Managing water resources

Once funding is obtained, the combined team will study a series of sites in the upper (Qwaqwa), middle (Free State Goldfields) and lower Vaal catchment areas. The aim of this three-year project is to prepare climatic, hydrological and ecological models as a basis for the development of a decision support system (DSS). This simple-to-use DSS is intended to assist local authorities with sustainable water resources management, as well as to address the risks associated with future climate change in their regions.

The study is titled: Threats of droughts and floods: investigating resilience to the multiple risks of climate change in Southern Africa and the study area was chosen for its suitability in terms of non-perenniality of rivers, residual impacts of mining, climate change, urbanisation, the poor quality of water, major modification of natural ecosystems, as well as poverty and joblessness.

According to Marinda Avenant, lecturer in the Centre for Environmental Management, increasing hazards can result in additional ecological, social and economic impacts and risks such as asset damage, yield reduction and decrease of livelihoods for the region. “We intend to produce a tool to support decision-making and risk-management by means of easily understandable guidelines to consider threats of droughts and floods under climate-change conditions of mining-contaminated, non-perennial river systems,” said Avenant.

 

Reliable forecasts

 

A web-based data platform to provide reliable forecasts of disaster risk and effective warnings of multiple hazardous weather events will also be developed to support resilient management strategies and to trigger risk reduction behaviour.

News Archive

Breeding of unique game requires a balance between conservation and sustainable use
2014-05-20

 

Game bred for qualities such as unconventional hair colour or horn quality, may on the long term have unexpected consequences for biodiversity and game farming.

This is according to the inaugural lecture of Prof Paul Grobler from the Department of Genetics at the University of the Free State (UFS).

Prof Grobler feels that the consequences of selective breeding should be examined carefully, as there is currently much speculation on the subject without sound scientific information to back it.

“At the moment, colour variation invokes much interest among game farmers and breeders. Unusual colour variants are already available in different game species. These unusual animals usually fetch much higher prices at auctions compared to prices for the ‘normal’ individuals of the species.”

Examples of these unusual variants are springbuck being bred in white, black or copper colours, the black-backed or ‘saddleback’ impala, and the gold-coloured and royal wildebeest.

A black-backed impala was recently sold for R5,7 million.

“Based on genetic theory, good reason exists why these practices need to be monitored, but one should also take care not to make the assumption that selective breeding will inevitably lead to problems,” warns Prof Grobler.

Grobler says that negative characteristics in a species can sometimes unwittingly be expressed during the selection process for a unique colour. “It is seen, for example, in purebred dogs where the breeding of a new race sometimes brings underlying genetic deviations in the species to the front.” He also believes that some of these animals may not be able to adapt to changing environmental conditions.

“However, one should also look at the positive side: because of the good demand for game, including unusual variants, there is much more game in South Africa today than in many decades. Balance should be found between the aims of conservation and the sustainable utilisation of game.”

Research at the UFS’s Department of Genetics is now trying to establish the genetic effects of intensive game breeding and predict the impact on biodiversity.

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