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27 September 2021 | Story Leonie Bolleurs | Photo Supplied
Eddie Smit, Tercia Strydom, and Prof Johan van Tol testing the hydrophobicity of soils directly after an experimental fire.

The main driving force behind climate change is the emission of greenhouse gases through human activities, says Prof Linus Franke, Associate Professor and Head of the Department of Soil, Crop and Climate Sciences at the University of the Free State. 

“Carbon dioxide is the biggest culprit, accounting for 72% of the global warming effect, followed by methane and nitrous oxide.” 

Too much carbon in the atmosphere

Human activities are the main driver of climate change, mainly by burning fossil fuels such as coal, gas, and oil, with the energy sector, industries, transport, buildings, and agriculture as the biggest emitters of greenhouse gases. 

According to the United Nations, the burning of these fossil fuels generates greenhouse gas emissions that wrap around the earth like a blanket, trapping the heat of the sun and resulting in raised temperatures. According to Prof Franke, it is important to mitigate climate change and prevent a global temperature rise of more than 1,5 degrees Celsius. According to the Intergovernmental Panel on Climate Change (IPCC), we are looking at a temperature increase of around four degrees Celsius by the end of this century, if there are no drastic changes.

With an increase in global warming, we are expecting more disturbances in weather patterns, resulting in further extreme weather conditions such as droughts, floods, and extremely cold/hot conditions. Annually, millions of people lose their lives, livelihoods, and homes due to the effects of global warming.

“The latter has been predicted for a long time, but today it is a common phenomenon. Twenty years ago, climate change was about analysing trends in data sets. Today, to observe climate change, one can just look out of the window. In the past 10 years, climate change has become a reality,” says Prof Franke. 

Although carbon dioxide is one of the biggest contributors to global warming, it has an important role to play in soil health. 

Soil as a major sink of carbon

As plants absorb the carbon dioxide from the atmosphere, enormous amounts of carbon are stored as organic soil matter in the upper two metres of soil. Prof Franke says carbon in the top two metres of soil is 200 times more than the amount that is annually emitted by human activities and three times the amount that is present in the atmosphere or vegetation. 

“Carbon in soil plays an important but underestimated role,” he says. He believes that through proper soil management, humans can control the amount of carbon in the atmosphere. In the long term, this could have a positive effect on climate change.

“Our ultimate aim it to get sufficient amounts of carbon in the soil,” says Prof Franke. His department is involved in several studies to understand soil carbon and carbon sequestration processes. 

Odwa Malongweni collecting a soil sample from exclosures in the Kruger National Park.(Photo: Supplied)

Prof Johan van Tol, Associate Professor in the same department, and postgraduate students are conducting research in the Kruger National Park and the Drakensberg, where they are investigating the best ways to preserve carbon and increase the soil carbon levels. 

He is of the opinion that there are two viable options for storing carbon removed from the atmosphere: the soil and the oceans. “Of the two, storing carbon in the soil is more realistic for most people and companies, as ownership and management of this natural resource can be determined. The potential for storing carbon in the soil is vast, yet poor soil management has led to carbon emissions equal to that of burning oil and coal reserves. Good soil management and restoration of degraded soils, on the other hand, can result in considerable sequestration of atmospheric carbon,” he says. 

According to him, soil and environmental factors determine the carbon storage potential of the soil. He says in the mountainous soils of the Maloti-Drakensberg (MD), the cool climate and high rainfall have resulted in carbon-rich soils. “This area is generally considered a ‘carbon hotspot’, yet little is known about the carbon dynamics of these soils.”

Preliminary results from a project by two of his postgraduate students, Cowan Mc Lean and Jaco Kotze, titled Characterisation of carbon stocks, microbial diversity and degradation of the soils of the Amphitheatre summit, Northern Drakensberg, show that average carbon stocks of the soils are high to very high in the alpine wetlands. They found that poor land management (overgrazing) has resulted in soil and land degradation (e.g., erosion, draining of wetlands, and loss of vegetation and biodiversity). 

“The degraded soils are no longer a ‘sink’ of atmospheric carbon, but become a ‘source’ that releases carbon,” he states. 

He says drastic action is required to restore and protect these important carbon hotspots. 

Today, to observe climate change, one can just look out of the window. In the past 10 years, climate change has become a reality. – Prof Linus Franke
In a study in the Kruger National Park, PhD students Tercia Strydom and Odwa Malongweni are investigating the impact of fires and herbivores on soil quality, including carbon contents. “They found that soil carbon is significantly impacted by fire and herbivores. The changes in vegetation structure due to fire and herbivores are likely to be the key driver of changes in carbon stocks,” says Prof Van Tol. 

An agricultural perspective 

Prof Franke considers carbon as an essential element for farming. “It is important for a healthy farming system,” he says. 

He is conducting a study on high-density grazing, funded by the Regional Universities Forum for Capacity Building in Agriculture. The on-farm performance of different grazing management systems, including selective and high-density grazing, with special reference to the spatial and temporal dynamics of soil carbon, is investigated in this study. 

The research indicates that the grassland biome of South Africa covers about 20% of South Africa’s land surface, with more than half of the biome converted to arable land or greatly disturbed by urban development mining activities. The remaining tracks of the grassland biome are mostly used for livestock grazing on natural grassland. 

 

Prof Johan van Tol, Sue van Rensburg from the South African Environmental Observation Network, and Prof
Linus Franke in the Drakensberg. (Photo:Supplied)

 

He says there are different grazing management strategies of natural grasslands. “In continuous grazing systems, animals are given the opportunity to graze all season long with minimal interference. Rotational grazing systems incorporate periodic deferments, allowing field vegetation to recover in the period when grazing is absent. 

“The more recent strategy of high-density grazing uses large herds, often double or triple the normal stocking densities for an area, grazing intensively on small areas of land for a short period of time, followed by a long resting period of the field.”

“High-density grazing is claimed to improve rangeland productivity by improving soil health, increasing soil carbon stocks to an extent that the emissions of greenhouse gases by livestock may be compensated by soil carbon sequestration, and improving the condition of the vegetation, while enhancing animal productivity on a per area basis. The adoption of high-density grazing can have major impacts on the sustainability and the economics of livestock production. An aim of the research is to quantify to what extent the claims of increasing soil carbon levels under high-density grazing realise under on-farm conditions,” explains Prof Franke.

He trusts that the knowledge generated in this project will be helpful to the broader agricultural sector, providing knowledge on carbon cycling, environmental sustainability, and opportunities for climate change mitigation in the livestock production sector.

Prof Franke is convinced that the protection of grasslands against degradation, while ensuring sufficient, reliable, and sustainable food production, are absolute key components driving the national and global development agenda.


Prof Johan van Tol taking a soil sample on top of the Drakensberg. (Photo: Supplied)

News Archive

Institutional research culture a precondition for research capacity building and excellence
2004-11-16

A lecture presented by Dr. Andrew M. Kaniki at the University of the Free State Recognition Function for research excellence

16 November 2004
The Vice Chancellor, Prof. Frederick Fourie
Deputy Vice Chancellors, Deans
Awardees
Colleagues and ladies and gentlemen

It is a great pleasure to be here at the University of the Free State. I am particularly honoured to have been invited to present this lecture at the First Annual Recognition Function for Research Excellence to honour researchers who have excelled in their respective fields of expertise. I would like to sincerely thank the office of the Director of Research and Development (Professor Swanepol), and in particular Mr. Aldo Stroebel for facilitating the invitation to this celebration.

I would like to congratulate you (the UFS) for institutionalizing “celebration of research excellence”, which as I will argue in this lecture is one of the key characteristics of institutional research culture that supports research capacity building and sustains research excellence.

Allow me to also take this opportunity to congratulate the University of the Free State for clocking 100 years of existence.

Ahmed Bawa and Johan Mouton (2000) in their chapter entitled Research, in the book: Transformation in higher education: global pressures and local realities in South Africa (ed. N. Cloete et. al Pretoria: CHET. 296-333) have argued that “…the sources of productivity and competitiveness [in the knowledge society and global economy] are increasingly dependent on [quality] knowledge and information being applied to productivity”. The quality knowledge they refer to here is research output or research products and the research process, which (research) as defined by the [OECD] Frascati Manual (2002: 30) is:

“…creative work undertaken on a systematic basis in order to increase the stock of knowledge, including knowledge of man, culture and society, and the use of this stock of knowledge to devise new applications”

The South African Government has set itself the objective of transforming South Africa into a knowledge society that competes effectively in the global system. A knowledge society requires appropriate numbers of educated and skilled people to create quality new knowledge and to translate the knowledge in innovative ways. To this end a number of policies and strategies like the Human Resource Development [HRD] Strategy for South Africa, the National Plan for Higher Education (NPHE) and the South Africa’s Research and Development [R&D] Strategy, have highlighted human resource development and the concomitant scarce skills development as critical for wealth creation in the context of globalization. The key mission of the HRD Strategy for instance is:

To maximize the potential of the people of South Africa, through the acquisition of knowledge and skills, to work productively and competitively in order to achieve a rising quality of life for all, and to set in place an operational plan, together with the necessary institutional arrangements, to achieve this.

The R&D Strategy emphasizes that maximum effort must be exerted to train the necessary numbers of our people in all fields required for development, running and management of modern economies. Higher education institutions like the University of the Free State have a key role to play in this process, because whatever form or shape a university takes, it is expected to conduct research (quality research); teach (quality teaching – and good graduates); and contribute to the development of its community! Thus the NPHE states that the role of higher education in a knowledge-driven world is threefold:

Human resource development;

High-level skills training and

Production, acquisition and application of knowledge.

Quality research output or knowledge which as argued is critical in determining the degree of competitiveness of a country in the knowledge economy is dependent upon quality research (process). Both the process of producing quality research and its utilization cannot and does not happen in a vacuum. It requires an environment that facilitates the production of new knowledge, its utilization and renewal. It requires skilled persons that can produce new knowledge and facilitate the production of new skills for quality knowledge production. Such an environment or in essence a university must have the culture that supports research activity. Institution research culture (that is a conducive and enabling institutional research culture) is a precondition to research capacity building. Without an institutional research culture that facilitates the development and nurturing of new young researchers it is difficult, if not impossible for a university to effectively and efficiently generate new and more quality researchers. Institutional research culture is also necessary to sustain quality research and quality research output or research excellence. It facilitates the development and sustenance of the institutional and people capacities required to do research produce quality research and generally attain research excellence!

We do recognize that the patterns of information and knowledge seeking, and knowledge generation vary among field or disciplines. For example, we know that in the humanities knowledge workers often work individually, and not as collaboratively as do those of the sciences, they all however, require supportive environments – institutional research culture to achieve and sustain research excellence. An institution does not simply attain a supportive research culture, but as Patricia Clements (English Department, University of Alberta, Edmonton) in her presentation Growing a research culture argues, research culture has to be grown [and maintained]. It unifies all natural and engineering scientists; medical researchers, humanists, and social scientists.

I therefore am of the view that Institutional Research Culture is critical to research capacity building and research excellence. I therefore want to spend a few minutes looking at the characteristics of research culture. To be effective, institutional research culture has grown and sustained not only at the institutional level, but also at the faculty, school and departmental levels of any university.

What is Research Culture?

In the process of researching on institutional research culture I identified several characteristics. Many of these overlap in some way. I want to deal with some of these characteristics; some in a little more detail while others simply cursorily. In the process what we should be asking ourselves is the extent to which an institution, like the University of the Free State, and its faculties, individually and severally, is growing and or sustaining this culture.

Institutional Research Strategy: As a plan of action or guide for a course of action, the institutional research strategy must spell out research goals that a university wants to achieve. It must be a prescription of what the university needs to be done with respect to research. As a strategy it is neither an independent activity nor an end in itself, but a component part and operationalization of the university policy or mission. ( Related to this is the Establishment of Institutional research policies)

Includes and makes public the targets, e.g. achieve so many rated scientists and make sure that every year we have so many SAPSE publications. That way people keep an eye on research agendas of the university and nation.

The UFS is obviously on its way, having launched its own Research strategy (A Strategic framework for the development of research at the University of the Free Sate. August 2003). Note that this strategy refers specifically to the “Culture of research” Fig 1

A set of administrative practices to support and encourage research. Patricia Clements (English Department, University of Alberta, Edmonton) in her presentation Growing a research culture argues that that research activity and output within the her Faculty (Arts) were very low and, in spite of the numbers of staff, with no Associate Dean for Research in the Faculty as though they had accepted that research belonged to Medicine and Science and Engineering, and teaching, separated from inquiry, belonged to the Arts. With the change in the thinking about research and development of research culture, it became clear that there was a major role for research support in a faculty her size (now about 360 full time continuing academic staff). The faculty developed a support system for research and began to address the SSHRC issues.

Reduce the bureaucracy system and micromanagement of research! This however, also implies that there is capacity and policies and procedure to manage and guide research processes

Establishment of Intellectual Property regulations and assistance

Research ethics policy and safeguarding by research administration

Focused, applied and suitable nature of the delivery mode (an institution open to new methodologies for conducting research

Programmes suited both full and part-time study particularly at graduate level (Mainly at Faculty/school and department level, and depending on what’s manageable)

Hiring senior academics to engage in, teach on and supervise postgraduate students to facilitate exchange of and transfer ideas and most importantly mentorship especially in view of declining numbers of researchers in particular fields

Quality instruction and facilitation in learning about research processes

A high retention rate of students maintained by the supportive and challenging learning environment and the use of online facilities to support collaboration and in-class learning

Availability of research grants: and awareness of sourcing funds from external sources like the National Research Foundation; Water Research Commission; Medical Research Council, private philanthropies and others outside the country. For example an institution should be able to assess how much of the slice the available funds (NRF etc) its able acquire and possibly top slice from institutional budget.

Adequacy of the financial reward system to encourage university staff members to do research (General Celebration of achievement for research excellence and achievement. This ranges form Annual reports mention; celebratory dinner. At Alberta researchers were given lapels. I don’t know of any academic who do not feel a sense of achievement to get into print or recognised. Access to research facilities within and outside the institution

Provision of infrastructure to support university-based research (e.g. equipment, admin support, etc.) – but also awareness of publicly funded and available research facilities and equipment!

Internet connectivity and changes in the bandwidth of the internet to download articles

Subscription to related bodies by the library so that researcher can download articles

Facilities and resources to attend international conferences to keep one updated

Number of visiting professors/speakers targeting senior scholars and invite them to lunch to ask them to participate and to encourage their best graduate students to do so within the institution and across institutions

Research training seminars for research students including young academics

Participation of staff/students in delivering research papers to national and international conferences

Establishment of research groups to provide interaction frameworks to achieve critical mass of research-active staff

Facilitation for more research time: Targeting new scholars and giving them reduced teaching loads in their first year or two for the purpose of developing their research programs. For the purpose of helping new colleagues to see the shape of South African research support, personalizing it, and creating research community

Take research to the community and argue its necessity, and utility

And, finally celebrating excellence. We must recognize achievement - parties and public recognition for colleagues who achieve splendid things in their research.

In conclusion, I want to reemphasize that research culture has to be grown it does not simply exist in an institution. If it is grown it needs to be nourished, nurtured and sustained. An institution cannot simply leave on borrowed reputation and expect to remain research excellent. It is on this basis that instruments like the National Research Foundation rating system recognizes excellence within a given period of time and not necessarily for a life time! This it is believed encourages continued research excellence.

THANK YOU and best wishes

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