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24 February 2023 | Story André Damons | Photo Supplied
Prof Paul Oberholster
Prof Paul Oberholster is Director of the Centre for Environmental Management at the University of the Free State (UFS) and winner of the NSTF-Water Research Commission (WRC) Award for his contribution to water resource management in South Africa in 2021.

This year has already seen severe natural disasters across the world, including devastating floods and forest fires, which serve as reminders of the planet's fragility and the importance of addressing the impacts of climate change. Nature-based solutions can play a critical role in mitigating climate change and offer a range of benefits to both people and the planet.

Prof Paul Oberholster – Director of the Centre for Environmental Management at the University of the Free State (UFS) – and his team played their part by researching nature-based solutions as an alternative to treating acid mine drainage (AMD) and domestic wastewater. Freshwater algae as a phycoremediation solution approach have the potential to help society and the environment in several ways.  

Prof Oberholster, winner of the NSTF-Water Research Commission (WRC) Award for his contribution to water resource management in South Africa in 2021, says nature-based solutions also play a vital role in realising the Kunming-Montreal Global Biodiversity Framework (GBF), which was adopted during the United Nations Biodiversity Conference (COP15) on 19 December 2022 in Montreal, Canada. The GBF sets global targets for 2030 that aim to effectively conserve and manage at least 30% of the world's lands, inland waters, coastal areas, and oceans, prioritise ecologically representative and well-connected systems of protected areas, restore at least 30% of degraded ecosystems, reduce the loss of areas of high biodiversity importance, cut global food waste in half, and significantly reduce over-consumption and waste generation.

What are nature-based solutions?

According to Prof Oberholster, nature-based solutions are approaches that utilise natural ecosystem processes, functions, and structures to address a variety of planetary health challenges, including climate change. These solutions involve protecting, restoring, regenerating, and sustainably managing natural ecosystems, such as forests, wetlands, and oceans, to enhance their ability to store carbon, regulate water flow, reinstate ecosystem services, and provide habitat for wildlife.

The significance of nature-based solutions regarding climate change adaptation is multifaceted. Firstly, natural ecosystems are essential for regulating the earth's climate, as they absorb and store carbon dioxide from the atmosphere, which helps to mitigate the effects of greenhouse gas emissions. 

Secondly, nature-based solutions can help to reduce the vulnerability of human communities to the impact of climate change, such as flooding, drought, and extreme weather events. Thirdly, nature-based solutions can provide multiple benefits beyond climate change adaptation, such as enhancing biodiversity, supporting sustainable livelihoods, and improving human health and well-being.

Prof Oberholster’s work

Algae-based treatment systems use bio-stimulation applications and natural processes to remove pollutants from water, which can be more cost-effective and produce less waste. Traditional treatment methods for AMD and domestic wastewater often rely on using chemicals or energy-intensive processes, which can be expensive and have negative environmental impacts. 

"Algae-based treatment systems can help mitigate the environmental impacts of AMD and domestic wastewater by removing pollutants such as heavy metals and reducing the acidity of the water. This can help restore the ecosystem and protect public health. Similarly, algae-based treatment systems can remove nutrients from domestic wastewater, reducing its environmental impact and preventing eutrophication, which can harm aquatic life," says Prof Oberholster.

Clean water and sanitation, forestry (plant life and agriculture), and climate change are part of the 17 Sustainable Development Goals (SDGs) making Prof Oberholster's research much more important. 


Meet a Limnologist, Paul Oberholster (NSTF-South32 Award Winner): 


Significance of nature-based solutions

According to him, there are several reasons why we should make more use of nature-based solutions. It can help reduce our carbon footprint and mitigate the impact of climate change. It can help protect the environment and promote biodiversity. By reducing waste and pollution, we can preserve natural resources and ecosystems and ensure they remain healthy and vibrant for future generations.

Dr Yolandi Schoeman , a postdoc student of Prof Oberholster, says the significance of nature-based solutions is multifaceted and includes environmental, social, and economic benefits. Nature-based solutions can play a critical role in mitigating climate change by sequestering carbon, enhancing carbon sinks, and reducing greenhouse gas emissions. By protecting and restoring natural ecosystems, we can enhance their ability to store carbon, which in turn helps to mitigate the effects of climate change.

"These solutions are also important for climate change adaptation. Nature-based solutions can also help to reduce the vulnerability of human communities to the impact of climate change, such as flooding, drought, and extreme weather events. By regenerating natural wetlands and floodplains, for example, we can help to reduce the risk of flooding, while reforestation can help to prevent soil erosion and landslides,'' says Dr Schoeman.

According to her, rewilding is another key reason why nature-based solutions are critical in the process of regenerating natural ecosystems. Through rewilding, habitat can be reinstated for a wide range of plant and animal species, lost species guilds can be restored by giving them space to thrive, population enhancement can be enabled, and key native species can be reintroduced as essential ecosystem builders. By protecting, regenerating, and restoring these ecosystems, we can help conserve biodiversity and prevent species loss, ultimately securing our own survival on earth.

UFS research initiative relating to nature-based solutions 

The UFS has a number of ongoing research initiatives and projects focused on nature-based technology solutions, including projects focused on climate adaptation in water resource management, establishing the water-climate-food-rewilding-land nexus as a planetary health ‘stock-take’ of ecosystems, reducing water usage, reinstating connections as coupled human and natural systems, enabling rewilding, and increasing water efficiency. 

The UFS is also involved in research that addresses water pollution through developing and implementing nature-based systems such as hybrid constructed wetlands, phytoremediation and phycoremediation, regenerating natural wetland systems and riparian buffer zones, bio-remediation, design of bio-intelligent systems, integrating grey and green infrastructure, and the use of big data and analytics in the design and management of nature-based solutions for water, according to Dr Schoeman. 

Ecological Engineering Institute of Africa

Prof Oberholster is leading a globally significant initiative that has recently been established at the UFS – the Ecological Engineering Institute of Africa (EEIA). The EEIA's managing members include scientists and engineers from across the world, including Egypt, Ghana, Greece, and the United States of America (USA). 

Prof William Mitsch, an original co-founder of the EEIA, is also a managing member. Prof Mitsch, regarded as the best wetland scientist in the world, is also known for his positions as director of the Everglades Wetland Research Park, United States National Ramsar committee chair (to name but a few), and is an ecological engineer who was the co-laureate of the 2004 Stockholm Water Prize

The EEIA intends to promote interdisciplinary collaboration in advancing the field of ecological engineering in Africa and globally, and to encourage research in this innovative field. The EEIA's goal is also to establish a fully functional research and training facility, to develop various undergraduate and postgraduate curricula, and to provide international accreditation to ecological engineers. 

Snow

Evaluating on-site performance of Africa’s first ecologically engineered wetland treating a cocktail of anthropogenically impacted water from the agricultural, mining, and industrial sectors in Emalahleni, South Africa.

Forest

Phycoremediation integrated with phytoremediation in an ecologically engineered wetland to treat mine and industrial-impacted water.

Mountains

Dr Yolandi Schoeman (UFS), together with Mr Pieter Nel from North West Parks Board. Her nexus research project covers an area of more than 20 000 km² in South Africa to develop a water-climate-food-rewilding-land nexus as a novel approach to determining the planetary health status quo and boundaries of ecosystems as coupled human-natural systems.

News Archive

Gender bias still rife in African Universities
2007-08-03

 

 At the lecture were, from the left: Prof. Magda Fourie (Vice-Rector: Academic Planning), Prof. Amina Mama (Chair: Gender Studies, University of Cape Town), Prof. Engela Pretorius (Vice-Dean: Humanties) and Prof. Letticia Moja (Dean: Faculty of Health Sciences).
Photo: Stephen Collett

Gender bias still rife in African Universities

Women constitute about 30% of student enrolment in African universities, and only about 6% of African professors are women. This is according to the chairperson of Gender Studies at the University of Cape Town, Prof Amina Mama.

Prof Mama was delivering a lecture on the topic “Rethinking African Universities” as part of Women’s Day celebrations at the University of the Free State (UFS) today.

She says the gender profile suggests that the majority of the women who work in African universities are not academics and researchers, but rather the providers of secretarial, cleaning, catering, student welfare and other administrative and support services.

She said that African universities continue to display profound gender bias in their students and staffing profiles and, more significantly, are deeply inequitable in their institutional and intellectual cultures. She said women find it difficult to succeed at universities as they are imbued with patriarchal values and assumptions that affect all aspects of life and learning.

She said that even though African universities have never excluded women, enrolling them presents only the first hurdle in a much longer process.

“The research evidence suggests that once women have found their way into the universities, then gender differentiations continue to arise and to affect the experience and performance of women students in numerous ways. Even within single institutions disparities manifest across the levels of the hierarchy, within and across faculties and disciplines, within and between academic and administrative roles, across generations, and vary with class and social background, marital status, parental status, and probably many more factors besides these”, she said.

She lamented the fact that there is no field of study free of gender inequalities, particularly at postgraduate levels and in the higher ranks of academics. “Although more women study the arts, social sciences and humanities, few make it to professor and their research and creative output remains less”, she said.

Prof Mama said gender gaps as far as employment of women within African universities is concerned are generally wider than in student enrolment. She said although many women are employed in junior administrative and support capacities, there continues to be gross under-representation of women among senior administrative and academic staff. She said this disparity becomes more pronounced as one moves up the ranks.

“South African universities are ahead, but they are not as radically different as their policy rhetoric might suggest. A decade and a half after the end of apartheid only three of the 23 vice-chancellors in the country are women, and women fill fewer than 30% of the senior positions (Deans, Executive Directors and Deputy Vice-Chancellors)”, she said.

She made an observation that highly qualified women accept administrative positions as opposed to academic work, thus ensuring that men continue to dominate the ranks of those defined as ‘great thinkers’ or ‘accomplished researchers’.

“Perhaps women simply make realistic career choices, opting out of academic competition with male colleagues who they can easily perceive to be systematically advantaged, not only within the institution, but also on the personal and domestic fronts, which still see most African women holding the baby, literally and figuratively”, she said

She also touched on sexual harassment and abuse which she said appears to be a commonplace on African campuses. “In contexts where sexual transactions are a pervasive feature of academic life, women who do succeed are unlikely to be perceived as having done so on the basis of merit or hard work, and may be treated with derision and disbelief”, she said.

She, however, said in spite of broader patterns of gender and class inequality in universities, public higher education remains a main route to career advancement and mobility for women in Africa.

“Women’s constrained access has therefore posed a constraint to their pursuit of more equitable and just modes of political, economic and social development, not to mention freedom from direct oppression”, she said.

Prof Mama concluded by saying, “There is a widely held agreement that there is a need to rethink our universities and to ensure that they are transformed into institutions more compatible with the democratic and social justice agendas that are now leading Africa beyond the legacies of dictatorship, conflict and economic crisis, beyond the deep social divisions and inequalities that have characterised our history”.

She said rethinking universities means asking deeper questions about gender relations within them, and taking concerted and effective action to transform these privileged bastions of higher learning so that they can fulfil their pubic mandate and promise instead of lagging behind our steadily improving laws and policies.

Media Release
Issued by: Mangaliso Radebe
Assistant Director: Media Liaison
Tel: 051 401 2828
Cell: 078 460 3320
E-mail: radebemt.stg@ufs.ac.za  
02 August 2007
 

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