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20 May 2021 | Story Leonie Bolleurs | Photo Leonie Bolleurs
The Maloti-Drakensberg is known as the ’water tower of Southern Africa’, as it is the largest provider of fresh water in the region. If the alpine system collapses, the water production will be detrimentally impacted.

The Afromontane Research Unit (ARU) of the University of the Free State, based in Phuthaditjhaba South Africa, is partnering with several institutions of higher learning, relevant forums, foundations, and policy makers in Africa in an attempt to expand its alpine research.

The research unit is joining forces with the University of Helsinki (Finland) and the National University of Lesotho (NUL) for a National Research Foundation (NRF) award to the University of Pretoria on using fine-scale functional and compositional variation in alpine plants to predict the impact of climate change. According to Dr Ralph Clark, Director of the ARU, this project will expand understanding of the ecology of the alpine zone in the Maloti-Drakensberg, and its similarity (or dissimilarity) with other alpine and tundra environments. 

First step towards sustainability and restoration

A complimentary visit by Alex Hickman, Chair of the African Mountain Research Foundation (AMRF), to the Bvumba Mountains in Zimbabwe, the ARU, and Afriski, laid the psychological foundations for the first two AMRF mountain observatories, as well as gaining support from Afriski as a focus area for alpine studies in the Maloti-Drakensberg. 

Dr Clark explains that the Maloti-Drakensberg is known as the ’water tower of Southern Africa’, as it is the largest provider of fresh water in the region. “The alpine system is critical to this water provisioning function but is under tremendous pressure from intense communal rangeland degradation. If the alpine system collapses, the water production will be detrimentally impacted,” he says.

“Understanding this alpine system holistically is the first step to sustainability and restoration in a social-ecological paradigm,” he adds.

Building capacity for mountain research

The ARU is leading two University Staff Doctorate Programmes (USDPs), both in partnership with the University of Venda, which supports 20 young academics to achieve their doctorates. Dr Clark says while doctoral topics are diverse, they are both focused on building capacity for mountain research in Southern Africa – including the mountain cities of Phuthaditjhaba and Thohoyandou. 

According to him, there are three partners from the United States of America (Appalachian and Colorado State Universities, and the University of Montana) and one partner from the United Kingdom (University of the Highlands and Islands) in the USDPs. Prof Geofrey Mukwada from the Department of Geography and Dr Grey Magaiza from the Department of Sociology are co-ordinating the USDPs.  

The ARU has also attracted one of Southern Africa’s top biodiversity scientists, Prof Peter Taylor, who started at the ARU Department of Zoology and Entomology in January 2021. Dr Clark believes that Prof Taylor – an NRF B3-rated researcher with an H-index of 34 who handed over his SARChI Research Chair to join the ARU – will catapult the ARU to a higher level of regional connectivity (notably with Angola), research outputs, and internal mentoring capacity. Prof Taylor, described as a mammologist and evolutionary biologist, specialises in the systematics, ecology, conservation, and ecosystem services and disservices of small mammals, in particular rodents, bats, and shrews.

Collaboration with two SARChI chairs

The ARU also collaborates with two Department of Science and Innovation NRF centres of excellence (Centre for Biological Control at Rhodes University, and the Centre for Invasion Biology at Stellenbosch University) and one SARChI Chair (Ecosystem Health and Biodiversity in KwaZulu-Natal and the Eastern Cape) on various non-native species in Southern African mountains. 

“The rose (Rosaceae) and grass (Poaceae) plant families are particular problem groups in our mountains. For example, firethorns (Pyracantha species) invade native grassland, taking over valuable grazing land and displacing indigenous species. Nassella grasses similarly displace natural rangeland and render farms unusable – if unchecked, the cost of controlling the nassella can exceed the value of the property. Our research seeks to understand the reproductive ecology of these species better, as well as best practice management,” explains Dr Clark.

In addition, the ARU has an ongoing collaboration on montane pollination systems with the SARChI Chair in Evolutionary Biology at the University of KwaZulu-Natal and the University of Cape Town. Dr Sandy-Lynn Steenhuisen in the Department of Plant Sciences is the ARU champion for both programmes. 

Connecting with policy makers in Lesotho

As of the first quarter in 2020, the ARU was invited to sit on the Maloti-Drakensberg Transfrontier Programme (MDTP): Biodiversity Sub-Committee. This opportunity enables the ARU to connect directly with high-level policy makers in Lesotho and South Africa, and to increase its reach for science-policy connections across the Maloti-Drakensberg region. 

Dr Clark states that partnerships under the MDTP can assist in achieving the ARU’s research goal of ‘the sustainable development of the Maloti-Drakensberg’. According to him, the ARU has proposed a focus in the MDTP on the degradation of the Mont-aux-Sources area. A qualitative site assessment by Dr Clark has, among others, also led to a book chapter being submitted in 2021.

The ARU is also extending its reach to include research on montane wetlands. Together with BirdLife South Africa, they have finalised a memorandum of understanding around montane wetland research, offering the potential for partnering to survey poorly studied montane wetlands for rare biodiversity, notably key endangered bird species. 

Dr Clark says the montane wetland bio-acoustic network has been strengthened through Dr Peter Chatanga (NUL) landing a British Ecological Society grant for bio-acoustic work in Bokong Nature Reserve in Lesotho, in collaboration with Prof Aliza le Roux from the Department of Zoology and Entomology and the Okinawa Institute of Science and Technology in Japan, as well as linking to BirdLife’s programme.

Global Mountain Safeguard Research in Southern Africa

Southern African links grew well in 2020 due to new mountain-focused contacts in Madagascar, Zambia, Malawi, and Réunion through the Global Mountain Safeguard Research (GLOMOS)-led Safeguarding Mountains book project, with Dr Clark being the editor of the African contribution. 

The ARU submitted several research proposals with members of the GLOMOS team, including on water security and civic society in Maloti-a-Phofung Local Municipality; climate change and water provisioning in the Maloti-Drakensberg; and a book (in process) on Phuthaditjhaba as an African mountain city.  

The ARU is also planning the first Southern African Mountain Conference (SAMC2022) in partnership with the AMRF and GLOMOS, which will take place from 14 to 17 March 2022. According to Dr Clark, they seek to draw a strong regional contribution for a better understanding of Southern African mountains as social-ecological systems. “We also aim to form a stronger science-policy-practitioner interface and community of practice for Southern African mountains,” he says. 

News Archive

Fight against Ebola virus requires more research
2014-10-22

 

Dr Abdon Atangana
Photo: Ifa Tshishonge
Dr Abdon Atangana, a postdoctoral researcher in the Institute for Groundwater Studies at the University of the Free State (UFS), wrote an article related to the Ebola virus: Modelling the Ebola haemorrhagic fever with the beta-derivative: Deathly infection disease in West African countries.

“The filoviruses belong to a virus family named filoviridae. This virus can cause unembellished haemorrhagic fever in humans and nonhuman monkeys. In literature, only two members of this virus family have been mentioned, namely the Marburg virus and the Ebola virus. However, so far only five species of the Ebola virus have been identified, including:  Ivory Coast, Sudan, Zaire, Reston and Bundibugyo.

“Among these families, the Ebola virus is the only member of the Zaire Ebola virus species and also the most dangerous, being responsible for the largest number of outbreaks.

“Ebola is an unusual, but fatal virus that causes bleeding inside and outside the body. As the virus spreads through the body, it damages the immune system and organs. Ultimately, it causes the blood-clotting levels in cells to drop. This leads to severe, uncontrollable bleeding.

Since all physical problems can be modelled via mathematical equation, Dr Atangana aimed in his research (the paper was published in BioMed Research International with impact factor 2.701) to analyse the spread of this deadly disease using mathematical equations. We shall propose a model underpinning the spread of this disease in a given Sub-Saharan African country,” he said.

The mathematical equations are used to predict the future behaviour of the disease, especially the spread of the disease among the targeted population. These mathematical equations are called differential equation and are only using the concept of rate of change over time.

However, there is several definitions for derivative, and the choice of the derivative used for such a model is very important, because the more accurate the model, the better results will be obtained.  The classical derivative describes the change of rate, but it is an approximation of the real velocity of the object under study. The beta derivative is the modification of the classical derivative that takes into account the time scale and also has a new parameter that can be considered as the fractional order.  

“I have used the beta derivative to model the spread of the fatal disease called Ebola, which has killed many people in the West African countries, including Nigeria, Sierra Leone, Guinea and Liberia, since December 2013,” he said.

The constructed mathematical equations were called Atangana’s Beta Ebola System of Equations (ABESE). “We did the investigation of the stable endemic points and presented the Eigen-Values using the Jacobian method. The homotopy decomposition method was used to solve the resulted system of equations. The convergence of the method was presented and some numerical simulations were done for different values of beta.

“The simulations showed that our model is more realistic for all betas less than 0.5.  The model revealed that, if there were no recovery precaution for a given population in a West African country, the entire population of that country would all die in a very short period of time, even if the total number of the infected population is very small.  In simple terms, the prediction revealed a fast spread of the virus among the targeted population. These results can be used to educate and inform people about the rapid spread of the deadly disease,” he said.

The spread of Ebola among people only occurs through direct contact with the blood or body fluids of a person after symptoms have developed. Body fluid that may contain the Ebola virus includes saliva, mucus, vomit, faeces, sweat, tears, breast milk, urine and semen. Entry points include the nose, mouth, eyes, open wounds, cuts and abrasions. Note should be taken that contact with objects contaminated by the virus, particularly needles and syringes, may also transmit the infection.

“Based on the predictions in this paper, we are calling on more research regarding this disease; in particular, we are calling on researchers to pay attention to finding an efficient cure or more effective prevention, to reduce the risk of contamination,” Dr Atangana said.


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