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15 February 2021 | Story Supplied | Photo Supplied
Dr João Vidal is a research fellow at the Department of Plant Sciences and the Afromontane Research Unit (ARU) at the University of the Free State (UFS).

According to United Nations data projections for 2100, sub-Saharan Africa is set to experience a demographic explosion. The most rapid population growth zones in Africa are in or around mountains and the importance of managing these mountain ecosystems sustainably in order to maintain the benefits to such a growing population is critical, says Dr João Vidal, a research fellow at the Department of Plant Sciences and the Afromontane Research Unit (ARU) at the University of the Free State (UFS). 

The link between human population growth and the demand for water will impact these mountain grasslands. All of Africa’s important rivers originate in mountainous areas. The sustainable management of African mountain landscapes is thus vital for the sustained provision of quality water in suitable quantities. “Water is already limited in some places. This year we are facing another drought in South Africa, and if it was not for the mountains, it could have been much worse. The long-term resilience of Southern Africa’s mountains and their ecosystem services should be an absolute priority for both research and conservation,” says Dr Vidal.

Human population growth has several implications

As a mountain ecologist, his recent research is centred on developing indicators for monitoring biodiversity change in Southern Africa’s mountains. This is a collaborative research project with the South African Environmental Observation Network (SAEON), Ezemvelo KZN Wildlife, and the University of Pretoria.

Human population growth, as predicted for Southern Africa, has several implications for natural-resource management and biodiversity conservation. “Southern Africa has one of the highest proportions of grassland-dominated mountains in the world, comparable only to Central Asia,” says Dr Vidal. 

In December, UN Secretary-General António Guterres said during the launch of the 2021 Global Humanitarian Overview: “Conflict, climate change and COVID-19 have created the greatest humanitarian challenge since the Second World War. The number of people at risk of starvation has doubled. Hundreds of millions of children are out of school. Levels of extreme poverty have risen for the first time in 22 years.”

According to Dr Vidal this new scenario significantly increases the pressure on mountain environments and their biota, since people will have to find alternative ways of feeding their families, their animals, while the economy struggles to recover globally.

Through his research, Dr Vidal – together with a growing community of practices for Southern Africa’s mountains – aims to understand the socio-ecological functioning of these montane grasslands in order to encourage a science-policy-action interface for their sustainable management in a changing world. 


Alternative ways for measuring environmental change in mountains

Since much global mountain research is focused on forest-dominated mountains, Dr Vidal and his collaborators are developing specific tools to track climate change in grassy mountains.
He explains: “When you look at the available tools for tracking climate change in mountains, you have a tree line for many mountains in the world. However, with the Southern African grassy mountains, it is impossible to use such a tool. We are working on alternative ways for measuring environmental change in our mountains.

“As it gets warmer, certain communities of grasses may retract towards higher elevations because they need a certain minimum temperature to survive. The problem seems to be that current climate change is occurring at a much faster rate than most species might be able to retract. This means that higher temperatures may lead to habitat losses for temperature-vulnerable groups.

“Climate change is also making mountains increasingly vulnerable to ecological invasion by non-native species. The severe temperatures in mountains are a good barrier for many problematic lowland species. But with warmer temperatures in the mountains, these barriers are being weakened, increasing the number of potentially invasive plants in our mountains. With higher temperatures there is potential for a large guild of invasive trees to overrun grassland mountains affecting waterflow into dams and rivers. Examples are pines, willows, gums, and wattles, to name a few.

“The presence of invasive trees, especially along rivers, has long-term negative impacts on the functioning of mountain catchments. These trees destabilise riverbanks, extract large amounts of water, and cause local extinction of endemic montane biodiversity. In drier environments such as grasslands, this exacerbates the fragile water productivity,” he adds.

Global policymakers to recognise the value of grassy mountains 

It is important to draw attention to the value of natural grassy mountain systems around the world and to how threatened they are. The world’s grassy mountains need to be better studied and better placed on the global stage. This will encourage policy makers to recognise these systems and implement appropriate measures to facilitate their sustainable management. 

For the first time in 20 years, the recent International Panel of Climate Change (IPCC) report to the United Nations included a chapter focusing solely on mountains. “Policymakers are finally realising how disproportionately important mountain environments are and how dramatically they are affected by climate change,” says Dr Vidal. 

However, African mountains are underrepresented in research literature; it is the only continent for which there is no data included in the IPCC report. There is an urgent need to represent African mountains – especially Southern Africa’s mountains – on the global stage when it comes to climate change,” states Dr Vidal.

Dr Vidal is conducting this study in partnership with Dr Ralph Clark, Director of the ARU on the UFS Qwaqwa Campus

News Archive

Media: Sunday Times
2006-05-20

Sunday Times, 4 June 2006

True leadership may mean admitting disunity
 

In this edited extract from the inaugural King Moshoeshoe Memorial Lecture at the University of the Free State, Professor Njabulo S Ndebele explores the leadership challenges facing South Africa

RECENT events have created a sense that we are undergoing a serious crisis of leadership in our new democracy. An increasing number of highly intelligent, sensitive and committed South Africans, across class, racial and cultural spectrums, confess to feeling uncertain and vulnerable as never before since 1994.

When indomitable optimists confess to having a sense of things unhinging, the misery of anxiety spreads. We have the sense that events are spiralling out of control and that no one among the leadership of the country seems to have a definitive handle on things.

There can be nothing more debilitating than a generalised and undefined sense of anxiety in the body politic. It breeds conspiracies and fear.

There is an impression that a very complex society has developed, in the last few years, a rather simple, centralised governance mechanism in the hope that delivery can be better and more quickly driven. The complexity of governance then gets located within a single structure of authority rather than in the devolved structures envisaged in the Constitution, which should interact with one another continuously, and in response to their specific settings, to achieve defined goals. Collapse in a single structure of authority, because there is no robust backup, can be catastrophic.

The autonomy of devolved structures presents itself as an impediment only when visionary cohesion collapses. Where such cohesion is strong, the impediment is only illusory, particularly when it encourages healthy competition, for example, among the provinces, or where a province develops a character that is not necessarily autonomous politically but rather distinctive and a special source of regional pride. Such competition brings vibrancy to the country. It does not necessarily challenge the centre.

Devolved autonomy is vital in the interests of sustainable governance. The failure of various structures to actualise their constitutionally defined roles should not be attributed to the failure of the prescribed governance mechanism. It is too early to say that what we have has not worked. The only viable corrective will be in our ability to be robust in identifying the problems and dealing with them concertedly.

We have never had social cohesion in South Africa — certainly not since the Natives’ Land Act of 1913. What we definitely have had over the decades is a mobilising vision. Could it be that the mobilising vision, mistaken for social cohesion, is cracking under the weight of the reality and extent of social reconstruction, and that the legitimate framework for debating these problems is collapsing? If that is so, are we witnessing a cumulative failure of leadership?

I am making a descriptive rather than an evaluative inquiry. I do not believe that there is any single entity to be blamed. It is simply that we may be a country in search of another line of approach. What will it be?

I would like to suggest two avenues of approach — an inclusive model and a counter-intuitive model of leadership.

In an inclusive approach, leadership is exercised not only by those who have been put in some position of power to steer an organisation or institution. Leadership is what all of us do when we express, sincerely, our deepest feelings and thoughts; when we do our work, whatever it is, with passion and integrity.

Counter-intuitive leadership lies in the ability of leaders to read a problematic situation, assess probable outcomes and then recognise that those outcomes will only compound the problem. Genuine leadership, in this sense, requires going against probability in seeking unexpected outcomes. That’s what happened when we avoided a civil war and ended up with an “unexpected” democracy.

Right now, we may very well hear desperate calls for unity, when the counter-intuitive imperative would be to acknowledge disunity. A declaration of unity where it manifestly does not appear to exist will fail to reassure.

Many within the “broad alliance” might have the view that the mobilising vision of old may have transformed into a strategy of executive steering with a disposition towards an expectation of compliance. No matter how compelling the reasons for that tendency, it may be seen as part of a cumulative process in which popular notions of democratic governance are apparently undermined and devalued; and where public uncertainty in the midst of seeming crisis induces fear which could freeze public thinking at a time when more voices ought to be heard.

Could it be that part of the problem is that we are unable to deal with the notion of opposition? We are horrified that any of us could be seen to have become “the opposition”. The word has been demonised. In reality, it is time we began to anticipate the arrival of a moment when there is no longer a single, overwhelmingly dominant political force as is currently the case. Such is the course of history. The measure of the maturity of the current political environment will be in how it can create conditions that anticipate that moment rather than seek to prevent it. We see here once more the essential creativity of the counter-intuitive imperative.

This is the formidable challenge of a popular post-apartheid political movement. Can it conceptually anticipate a future when it is no longer overwhelmingly in control, in the form in which it is currently, and resist, counter-intuitively, the temptation to prevent such an eventuality? Successfully resisting such an option would enable its current vision and its ultimate legacy to our country to manifest in different articulations, which then contend for social influence. In this way, the vision never really dies; it simply evolves into higher, more complex forms of itself. Consider the metaphor of flying ants replicating the ant community by establishing new ones.

We may certainly experience the meaning of comradeship differently, where we will now have “comrades on the other side”.

Any political movement that imagines itself as a perpetual entity should look at the compelling evidence of history. Few movements have survived those defining moments when they should have been more elastic, and that because they were not, did not live to see the next day.

I believe we may have reached a moment not fundamentally different from the sobering, yet uplifting and vision-making, nation-building realities that led to Kempton Park in the early ’90s. The difference between then and now is that the black majority is not facing white compatriots across the negotiating table. Rather, it is facing itself: perhaps really for the first time since 1994. Could we apply to ourselves the same degree of inventiveness and rigorous negotiation we displayed leading up to the adoption or our Constitution?

This is not a time for repeating old platitudes. It is the time, once more, for vision.

In the total scheme of things, the outcome could be as disastrous as it could be formative and uplifting, setting in place the conditions for a true renaissance that could be sustained for generations to come.

Ndebele is Vice-Chancellor of the University of Cape Town and author of the novel The Cry of Winnie Mandela

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