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12 November 2024 | Story Jacky Tshokwe | Photo Supplied
Dr Mariana Erasmus
Dr Mariana Erasmus (Vice Director, CMBG) demonstrates some of the equipment in the newly established, state-of-the-art laboratories at the Centre for Mineral Biogeochemistry.

The University of the Free State (UFS) recently hosted a landmark event-the national launch of the South African Biogeochemistry Research Infrastructure Platform (BIOGRIP) - in the Centenary Complex on its Bloemfontein Campus. This significant occasion marked the establishment of the Centre for Mineral Biogeochemistry at the UFS and underscored South Africa’s growing commitment to biogeochemistry research.

Prof Anthea Rhoda welcomed the distinguished gathering of scientists, students, industry leaders, and stakeholders, highlighting the launch as a collaborative milestone in South Africa's scientific journey. In her address, Prof Rhoda emphasised the importance of the interdisciplinary nature of biogeochemistry, where biology, geology, and chemistry converge to offer insights into critical issues such as climate change, water quality, and soil health. She remarked on the necessity of collaboration, explaining that BIOGRIP’s platform, built on shared resources and expertise, exemplifies the power of uniting across institutional boundaries to accelerate impactful discoveries.

The programme featured insightful scientific talks by leading experts, each focusing on how biogeochemistry addresses key environmental issues such as sustainability and resource management. These presentations reinforced BIOGRIP’s commitment to advancing knowledge that can influence policy and improve practices.

Attendees were also given guided tours of the state-of-the-art laboratories in the Centre for Mineral Biogeochemistry, which provided a behind-the-scenes look at the advanced tools and methods employed in studying interactions between minerals, biology, and the environment. For many, this was a highlight, as they observed firsthand how biogeochemical research is conducted and contributes to soil health, pollution control, and environmental conservation.

The launch provided ample networking opportunities, fostering connections among academics, government representatives, industry professionals, and environmental organisations. Over a catered lunch, participants engaged in vibrant discussions about potential collaborations and the role of biogeochemistry in addressing South Africa’s environmental challenges.

The BIOGRIP national launch stands as a milestone event, not only for the UFS, but for the broader South African scientific community. With the establishment of this research platform, South Africa is well-positioned to tackle pressing environmental issues through innovative research and cross-sector collaboration. The event left attendees inspired and motivated, setting an optimistic tone for the future of biogeochemistry research in the region.

News Archive

Water erosion research help determine future of dams
2017-03-07

Description: Dr Jay le Roux Tags: Dr Jay le Roux

Dr Jay le Roux, one of 31 new NRF-rated
researchers at the University of the Free State,
aims for a higher rating from the NRF.
Photo: Rulanzen Martin

“This rating will motivate me to do more research, to improve outcomes, and to aim for a higher C-rating.” This was the response of Dr Jay le Roux, who was recently graded as an Y2-rated researcher by the National Research Foundation (NRF).

Dr Le Roux, senior lecturer in the Department of Geography at the University of the Free State (UFS), is one of 31 new NRF-rated researchers at the UFS. “This grading will make it possible to focus on more specific research during field research and to come in contact with other experts. Researchers are graded on their potential or contribution in their respective fields,” he said.

Research assess different techniques
His research on water erosion risk in South Africa (SA) is a methodological framework with three hierarchal levels presented. It was done in collaboration with the University of Pretoria (UP), Water Research Commission, Department of Agriculture, Forestry and Fisheries, and recently Rhodes University and the Department of Environmental Affairs. Dr Le Roux was registered for 5 years at UP, while working full-time for the Agricultural Research Council – Institute for Soil, Climate and Water (ARC-ISCW).

Water erosion risk assessment in South Africa: towards a methodological framework
, illustrates the most feasible erosion assessment techniques and input datasets that can be used to map water erosion features in SA. It also emphasises the simplicity required for application at a regional scale, with proper incorporation of the most important erosion-causal factors.

The main feature that distinguishes this approach from previous studies is the fact that this study interprets erosion features as individual sediment sources. Modelling the sediment yield contribution from gully erosion (also known as dongas) with emphasis on connectivity and sediment transport, can be considered as an important step towards the assessment of sediment produce at regional scale. 
 
Dams a pivotal element in river networks

Soil is an important, but limited natural resource in SA. Soil erosion not only involves loss of fertile topsoil and reduction of soil productivity, but is also coupled with serious off-site impacts related to increased mobilisation of sediment and delivery to rivers.

The siltation of dams is a big problem in SA, especially dams that are located in eroded catchment areas. Dr Le Roux recently developed a model to assess sediment yield contribution from gully erosion at a large catchment scale. “The Mzimvubu River Catchment is the only large river network in SA on record without a dam.” The flow and sediment yield in the catchment made it possible to estimate dam life expectancies on between 43 and 55 years for future dams in the area.
 
Future model to assess soil erosion
“I plan to finalise a soil erosion model that will determine the sediment yield of gully erosion on a bigger scale.” It will be useful to determine the lifespan of dams where gully erosion is a big problem. Two of his PhD students are currently working on project proposals to assess soil erosion with the help of remote sensing techniques.

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