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31 March 2025 | Story Andre Damons | Photo Andre Damons
Prof Aliza le Roux
Prof Aliza le Roux, Assistant Dean of the Faculty of Natural and Agricultural Sciences and Professor in the Department of Zoology and Entomology, at the Southern African Mountain Conference (SAMC2025).

Animals in mountainous areas around the world, in particular endangered, vulnerable, and near threatened mammals, are at risk of becoming roadkill as road networks expand further into these previously inaccessible terrains.

These mammals, which fall into the category of conservation risk according to the International Union for Conservation of Nature (IUCN) definitions, include African wild dogs (endangered), lions and leopards (both vulnerable), elephants (endangered), and honey badgers (NT – near threatened). Among the road-killed birds found in these areas are the hooded vulture (critically endangered) and the endangered steppe eagle.

This is according to Prof Aliza le Roux, Assistant Dean of the Faculty of Natural and Agricultural Sciences and Professor in the Department of Zoology and Entomology, who presented research during a session at the Southern African Mountain Conference (SAMC2025). Prof Le Roux, a behavioural ecologist studying how animals respond to risks and opportunities in the environment, did an oral presentation titled Patterns of wildlife-vehicle collision in montane environments during a session on Mountain biodiversity: animals.

The conference, under the patronage of UNESCO and organised by the University of the Free State (UFS) Afromontane Research Unit (ARU) – in partnership with the African Mountain Research Foundation (AMRF) and the Global Mountain Safeguard Research Programme (GLOMOS) – brought together researchers, policy makers, and practitioners from across Southern Africa and beyond. It delved into critical issues around mountain ecosystems, communities, governance, and transboundary cooperation.

For the research, Prof Le Roux, Dr Katlego Mashiane, Lecturer in the UFS Department of Geography, and Dr Clara Grilo from the BIOPOLIS project in Portugal, looked for published data/papers from 1971 to 2024, finding that most of the published literature on roadkill in Africa came from the 21st Century.

 

Heightens risks to wildlife

According to her, they found that amphibians were killed at the highest rate in the mountainous regions, while mammals were killed most frequently in the low-lying regions. Mammalian species classified as near threatened or more vulnerable to extinction on the IUCN Red List were most frequently found in the high-elevation mountains (7,7% of species killed in these areas), but also in low-lying areas (3,8% of mammalian roadkill). About 3% of the birds killed at moderate elevations were also of conservation concern.

“Increased vehicular traffic and better-paved roads in montane environments heighten the risks to wildlife inhabiting these regions, including the potential for more wildlife-vehicle collisions, leading to higher mortality rates. In terms of sheer numbers, many more small species (less than 1 kg in adult weight) are killed than larger species. This is probably because we either don’t see them or don’t care if we hit them. But we do care if our cars collide with something large like an eland – it does damage to us as well as them.”

“Unpredictable weather patterns and sudden topographical changes all contribute to these roads potentially being more hazardous for both drivers and any surrounding wildlife: the ruggedness of these terrains and tortuosity of roads can make it harder for drivers and wild animals to detect one another on mountain roads, increasing the likelihood of collisions,” writes Prof Le Roux and her colleagues.

The researchers estimated the roadkill rates for each observed species and then analysed the correlation with topographic aspects of the study sites. They used the 90m digital elevation model downloaded from the geospatial cloud-computing platform Google Earth Engine and classified ‘high’ elevation mountains as regions lying above 2 000 metres above sea level (masl), ‘moderate’ elevation mountains as lying between 1 500 and 2 000 masl, and ‘low’ regions as areas below 1 500 masl.

 

Limited data

Prof Le Roux and Dr Mashiane also extracted slope and the topographic ruggedness index. Roadkill rates were estimated for 15 different amphibian species, 98 reptilian, 261 avian, and 273 mammalian species, comprising 5 549 individual road kills.

“These findings indicate that roads in mountainous African regions pose a high risk to our indigenous wildlife. The accidents in mountainous areas are something to be aware of, as we are moving further into mountains where there is often vulnerable and unique biodiversity. When we do kill vertebrates through a collision, it is often a species that we would not find in low-lying areas.”

Unfortunately, Prof Le Roux says, they cannot say what the continental patterns are because so little data is available about biodiversity and roadkill patterns in the central and western parts of the continent. The data they found came from only 10 countries, and almost none of the studies took the form of systematic, longitudinal monitoring. The data sets were all ‘snapshots’ of roadkill in specific areas.

News Archive

UFS appoints Prof Francis Petersen as Vice-Chancellor and Rector
2016-12-02

Description: Prof Francis Petersen  Tags: Prof Francis Petersen  

Prof Francis Petersen

The Council of the University of the Free State (UFS) is pleased to announce that it has decided to appoint Prof Francis Petersen as Vice-Chancellor and Rector of the UFS.

Announcing the decision to appoint Prof Petersen today (Friday 2 December 2016) during the quarterly Council meeting on the Bloemfontein Campus, the Chairperson of the UFS Council, Judge Ian van der Merwe, said the university was fortunate to be able to appoint a candidate of such good quality to the position.

Prof Petersen, Deputy Vice-Chancellor: Institutional Innovation at the University of Cape Town (UCT), and Prof Lis Lange, Vice-Rector: Academic at the UFS, were in line for the position. The university’s Selection Committee expressed equal preference for both and the two candidates were therefore recommended to Council for the position.  
 
“It has been a truly participatory and transparent selection process, which has assisted in the Council being able to make this decision. The higher-education sector has been through a difficult and challenging time during the past few months and the Council is thankful that a leader like Prof Petersen can head the university in 2017 and beyond,” said Judge Van der Merwe.

In his statement of intent, which was submitted earlier as part of the application for the post, Prof Petersen indicated that it is important to imagine the UFS’s location in South Africa and Africa, to realise the challenges within this context, now and in the future, so as to sharpen the university’s focus to become a more inclusive, academic excellent institution, embedded in a culture of innovation. “Therefore, the ideal of academic excellence must be supported by an institutional framework of diversity and inclusivity. The Academic Project should focus on a unique educational experience for every UFS student, the enhancement of student throughput-rate in academic programmes through dedicated academic support, graduate attributes, and curriculum change and renewal,” he said. He furthermore stated that research and innovation must focus on impact and international visibility. “It is thus not only the increase in research and innovation output, but the quality and impact thereof.” 

Prof Petersen was previously the Dean of Engineering and the Built Environment at UCT. He brings to the position of Vice-Chancellor and Rector his extensive experience of management in both the industry and academic sectors. He has been the executive head of strategy at Anglo American Platinum and head of the Department of Chemical Engineering at the Cape Technikon (now Cape Peninsula University of Technology). He is a member of the UCT Council, non-executive director on the Board of Pragma Holdings, non-executive director on the Board of the Unlimited Group, and Chairman of the Board of Trustees of the Seedcap (Venture Capital) Trust. Among others, he previously served as member on the Board of the Council of Scientific and Industrial Research, the National Advisory Council on Innovation, and the Council of the Academy of Science of South Africa.

He graduated from Stellenbosch University with a BEng (Chem Eng), MEng (Metal Eng), and PhD (Eng) degrees and completed a short course on Financial Skills for Executive Management. He is a recipient of the Ernest Oppenheimer Memorial Trust Award for research excellence, and was visiting professor at the Cape Technikon and extraordinary professor in the Department of Chemical Engineering at Stellenbosch University. He is a regular reviewer of journals, and member of a range of editorial boards for international journals.

Prof Petersen is also a registered professional engineer with the Engineering Council of South Africa and a Fellow of both the South African Institute of Mining and Metallurgy, and the South African Academy of Engineers. 

Prof Petersen succeeds Prof Jonathan Jansen, who stepped down as Vice-Chancellor and Rector of the UFS on 31 August 2016. An international executive search agency specialising in academic appointments has assisted the UFS Council in its search for top-quality candidates.

 

Released by:

Lacea Loader (Director: Communication and Brand Management)
Telephone: +27 51 401 2584 | +27 83 645 2454
Email: news@ufs.ac.za | loaderl@ufs.ac.za
Fax: +27 51 444 6393

 


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