Latest News Archive

Please select Category, Year, and then Month to display items
Previous Archive
02 March 2022 | Story Prof Anthony Turton | Photo Supplied
Prof Anthony Turton, Affiliated Professor in the Centre for Environmental Management at the University of the Free State (UFS), writes that in the face of the typhoid outbreak, we need to renew our trust in science, but also wake up and smell the coffee.

Opinion article by Prof Anthony Turton from the Centre for Environmental Management, University of the Free State .
The recent news has been dominated by so many things that an important signal has been drowned out by the noise. That small signal is the announcement by the NICD that typhoid has been identified in parts of the country, so the prudent approach is to boil the water coming from taps. While this is an important development, it needs to be placed into context.  For starters, the NICD is a credible institution, so anything they say must be taken seriously. This issue brings three important factors into clear focus. Let us unpack each of these in order to gain greater perspective. 

The issue of trust 

The first is the issue of trust. This is a global phenomenon, most notably associated with social media that has enabled each person to theoretically have access to the entire quantum of our cumulative knowledge as an apex species on planet earth. In an instant, each person has the capacity to become an expert on a given topic. We have seen this playing out in the COVID-19 space, most notably as the efficacy of the vaccination programme has been questioned. While it is great that so much information is available to everyone instantly, it is also a problem, because unless the individual is trained to filter out the noise, they are rapidly overloaded with stuff that causes them to panic. In South Africa this has an added dimension, driven by the findings of the Zondo Commission, which in general indicate a severe trust deficit between government and the general population. Seen in this light, it is highly likely that the typhoid issue will fall directly into that chasm of trust and serve to widen it even further. This needs to be dealt with in our collective best interest, because panic serves nobody in a constructive way. Therefore, the first part of my core message is that we must avoid the urge to become instant experts by deferring the scientific facts to the scientific professionals. Sadly, science has been a victim of this trust deficit, so my voice might be lost in the howling gale of discontentment. 

The problem of deteriorating water quality

The second is the problem of deteriorating water quality. In this regard, we are on absolutely solid ground, because we know – without fear of contradiction – that our water quality has been on a downward trajectory for some time. If we are looking for a pivotal moment, we might consider the acid mine drainage decant that first hit the public attention in 2002. Amid a flurry of activism and a media frenzy, we have the sad reality, two decades later, that absolutely nothing has been done about this matter. Highly acidic mine water, rich in a dissolved cocktail of metals that include uranium, arsenic, cadmium, and mercury, have continued to flow into our rivers and dams in mining areas of the country. But more importantly, we have also witnessed the systematic collapse of our wastewater infrastructure, which has accelerated over the past decade; this is best epitomised by the unsuccessful attempt of the SANDF to prevent the flow of raw sewage into the Vaal River at Emfuleni. Two billion rand later, we are no closer today to finding a solution than we were a decade ago. The numbers are staggering. As a nation, we produce over five billion litres of raw sewage every day. The latest credible calculation of that flow indicated that about 4,2 billion litres were being discharged daily into our rivers in an untreated format. That represents a tsunami of human waste inundating our rivers and dams, without respite, for more than a decade. 

This is probably our biggest single challenge as a nation. In my professional opinion, this is a national security issue, because it impacts negatively on the lives of each citizen daily. It is destroying the economy from within by damaging the health of the individual, without them even knowing about it. You see, in sewage return flows, we find every substance that is ever dispensed in the retail sector. Think of the pharmaceutical industry. Imagine how much medication is sold each day by major pharmacies countrywide. Every item sold ends up in the sewage stream in a partially metabolised format. These include antibiotics, antiretrovirals, antidepressants, oestrogen used for contraception, and Viagra used to keep an aging population happy. So, we need to think of the sewage streams being discharged into our rivers and dams as thousands of tons of medication, still viable even in its partially metabolised form, to which we are exposing trillions of pathogenic microbes that are flourishing in the warm nutrient-rich waters. Think of this as a boot camp for microbes, because lazy and weak ones are destroyed by the low concentration of antibiotics, leaving only the stronger ones to flourish. In short, our boot camp for microbes is producing the next generation of multidrug-resistant pathogens. It is happening right before our eyes.  Simply think about this logically and draw your own conclusion if you choose to mistrust science for reasons of your own.  Does it make sense to allow the discharge of more than four billion litres of sewage daily into our rivers and dams, without anticipating some form of unintended consequence?  

Our ability to cope as a nation

The third is the issue of our ability to cope as a nation. Here is where it gets really interesting, because at the very time when we are facing multiple risks to our economic well-being – COVID-19, unemployment, capital flight, energy crisis, corruption, to name but a few – we also need to be at our peak performance when it comes to finding solutions. We can say, with a high level of confidence, that our capacity to reach consensus on the way to solve the complex problems we are facing, is probably at an historic low (and deteriorating). In fact, we can say that there is an inverse relationship between our need to find consensus on a viable way ahead, and our capacity to generate the very consensus on which our survival as a species depends. This sounds a little dramatic, but I am using it to illustrate the point that globally, our capacity to unite in the face of a single common threat – climate change – is being eroded by many forces. These include the deficit of trust in government (point one noted above), the growing mistrust of science (exacerbated by the COVID-19 pandemic and the manifest as social pushback from the anti-vaxxers and the climate change denialists), and the increased sense of helplessness that each person is confronted with.

All of these are manifested in the typhoid issue. While typhoid is clearly a bad thing, we need to place it in context. Just as the COVID issue has shown us, the fatalities are relatively few, and while tragic to the individual families impacted, seen through the lens of logic and reason, this is not a show-stopper. What it does is highlight the issue of our failing sewage infrastructure. We can no longer simply accept that incompetent politicians can muddle their way through a growing crisis. We have to hold them accountable. We must convert the rising sense of rage into the high-octane rocket fuel of change. We need to say enough is enough. Now is the time that we demand technically competent people be appointed into specialist jobs, and then held fully accountable. We need to depoliticise the deployment of cadres, for that policy has brought us the failing infrastructure we see in Eskom, PRASA, municipal wastewater systems, and many other failed SOEs. 

In the face of the typhoid outbreak, we need to renew our trust in science, but also wake up and smell the coffee by realising that we cannot simply discharge billions of litres of acidic mine water and raw sewage into our rivers and dams, without encountering unintended consequences. Those consequences might just be deadly.

News Archive

Studies to reveal correlation between terrain, energy use, and giraffe locomotion
2016-11-18



More than half of giraffes in captivity in Europe are afflicted by lameness. This high prevalence represents an important welfare issue, similar to other large zoo animals.

According to Dr Chris Basu, a veterinarian at the Royal Veterinary College in the UK, giraffes in captivity are often afflicted by overgrown hooves, laminitis and joint problems. Diagnosis and treatment is limited by our understanding of anatomy and function, more specifically the locomotion of these animals. Although the giraffe is such a well-known and iconic animal, relatively little has been studied about their locomotor behaviour.

Dr Basu recently visited South Africa to do fieldwork on the locomotion of giraffes as part of his PhD studies under the mentorship of world-renowned Professor of Evolutionary Biomechanics, Prof John Hutchinson. This project is a joint venture between Dr Basu and Dr Francois Deacon, researcher in the Department of Animal, Wildlife, and Grassland Sciences at the UFS. Dr Deacon is a specialist in giraffe habitat-related research. 

Together Prof Hutchinson and Drs Deacon and Basu form a research group, working on studies about giraffe locomotion.

Wild giraffe population decrease by 40% in past decade

“Locomotion is one of the most common animal behaviours and comes with a significant daily energetic cost. Studying locomotion of wild animals aids us in making estimates of this energetic cost. Such estimates are useful in understanding how giraffes fit into ecosystems. Future conservation efforts will be influenced by knowledge of the energy demands in giraffes.

“Understanding aspects of giraffe locomotion also helps us to understand the relationships between anatomy, function and evolution. This is relevant to our basic understanding of the natural world, as well as to conservation and veterinary issues,” said Dr Deacon.

Locomotion study brings strategy for specialist foot care

On face value it seems as if foot disease pathologies are more common in zoo giraffes than in wild giraffes. “However, we need a good sample of data from both populations to prove this assumption,” said Dr Basu. 

This phenomenon is not well understood at the moment, but it’s thought that diet, substrate (e.g. concrete, straw, sand and grass) and genetics play a part in foot disease in giraffes. “Understanding how the feet are mechanically loaded during common activities (standing, walking, running) gives our research group ideas of where the highest strains occur, and later how these can be reduced through corrective foot trimming,” said Dr Basu.

Through the studies on giraffe locomotion, the research group plans to devise strategies for corrective foot trimming. At the moment, foot trimming is done with the best evidence available, which is extrapolation from closely related animals such as cattle. “But we know that giraffes’ specialist anatomy will likely demand specialist foot care,” Dr Basu said.

Studying giraffes in smaller versus larger spaces

The research group has begun to study the biomechanics of giraffe walking by looking at the kinematics (the movement) and the kinetics (the forces involved in movement) during walking strides. For this he studied adult giraffes at three zoological parks in the UK. 

However, due to the close proximity of fencing and buildings, it is not practical to study fast speeds in a zoo setting. 

A setting such as the Willem Pretorius Nature Reserve, near Ventersburg in the Free State, Kwaggafontein Nature Reserve, near Colesberg in the Karoo, and the Woodland Hills Wildlife Estate in Bloemfontein are all ideal for studying crucial aspects such as “faster than walking” speeds and gaits to measure key parameters (such as stride length, step frequency and stride duration). These studies are important to understand how giraffe form and function are adapted to their full range of locomotor behaviours. It also helps to comprehend the limits on athletic capacity in giraffes and how these compare to other animals. 

Drones open up unique opportunities for studying giraffes

The increasing availability of unmanned aerial vehicles (UAVs)/drones opens up unique opportunities for studying locomotion in animals like giraffes. Cameras mounted onto remotely controlled UAVs are a straightforward way to obtain high-quality video footage of giraffes while they run at different speeds.

“Using two UAVs, we have collected high definition slow motion video footage of galloping giraffes from three locations in the Free State. We have also collected detailed information about the terrain that the giraffes walked and ran across. From this we have created 3D maps of the ground. These maps will be used to examine the preferred terrain types for giraffes, and to see how different terrains affect their locomotion and energy use,” said Dr Deacon.

“The raw data (videos) will be digitised to obtain the stride parameters and limb angles of the animals. Later this will be combined with anatomical data and an estimation of limb forces to estimate the power output of the limbs and how that changes between different terrains,” said Dr Basu.


Related articles:

23 August 2016: Research on locomotion of giraffes valuable for conservation of this species
9 March 2016:Giraffe research broadcast on National Geographic channel
18 Sept 2015 Researchers reach out across continents in giraffe research
29 May 2015: Researchers international leaders in satellite tracking in the wildlife environment

 

We use cookies to make interactions with our websites and services easy and meaningful. To better understand how they are used, read more about the UFS cookie policy. By continuing to use this site you are giving us your consent to do this.

Accept