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06 April 2021 | Story Thabo Kessah | Photo Thabo Kessah
Ntebohiseng Sekhele is the Associate Guest Editor of the recent Special Issue of the African Journal of Range & Forage Science.

The Director of the Afromontane Research Unit (ARU), Dr Ralph Clark, and researcher, Ntebohiseng Sekhele, recently became part of a guest editorial team for the African Journal of Range & Forage Science. The Special Issue titled, ‘Montane rangelands in a changing world’, was published on 3 March 2021.

“I feel privileged to have been part of the team that assembled this special issue. The experience was daunting at first, as I had never been part of an editorial team before. However, with the support of the guest editors and the journal’s administrator, I was able to overcome the imposter-syndrome feeling and allowed myself to learn and enjoy the ride. My ‘aha’ moments were the critical comments from the reviewers on each paper. It was amazing to witness how this feedback would enhance the quality of an article,” said Ntebohiseng Sekhele, Geography lecturer on the Qwaqwa Campus.

Journal focus

This issue focused on the applied management of montane rangelands for production in Southern Africa and the broader world. Submissions could include original research, reviews, and meta-analyses. This has culminated in contributions that centred on the impact of policy on pastoral practices by montane communities, fire management regimes, cumulative effects of poor governance on rangeland degradation, and sustainable grazing systems – including in ecological infrastructure such as montane wetlands and communal rangeland. 

“The process took almost a year, as the first call for abstracts was made in December 2019 and final revisions of accepted papers were concluded in November 2020. There were 32 submissions with only 12 articles and one book review of Prof Rodney Moffett’s book, A Scientific Bibliography of the Drakensberg, Maloti and Adjacent Lowlands. Of the 12 contributions, nine focus on the Maloti-Drakensberg, with papers on Lesotho, KwaZulu-Natal, and the Free State,” she revealed. 

Submitted papers

“All papers advocate for the sustainable management of sensitive montane systems, which ties well with my own research that makes a contribution to the limited scholarship of natural resource-related conflicts between montane communities and their adjacent protected areas, as well as climate change impacts on natural resources,” said Sekhele, a PhD candidate through the ARU’s US-SA University Staff Development Programme (USDP). The special issue allowed for a closer link between the US and SA USDP through the involvement of Dr Kryan Kunkel – Ntebohiseng’s US co-supervisor – as one of the guest editors. 

News Archive

Einstein's gravitational waves as creative as Bach's music, says UFS physicist
2016-02-19

Description: Gravitational waves  Tags: Gravitational waves

Profile of the gravitational waves of the colliding black holes.

Prof Pieter Meintjes, Affiliated Researcher in the Department of Physics at the University of the Free State, welcomed the work done by the Laser Interferometer Gravitational-Wave Observatory (LIGO) science team.
 
For the first time, researchers from two of the American Ligo centres, in Washington and Louisiana respectively, observed gravitational waves directly, 100 years after Albert Einstein said they existed. "My study field in astrophysics involves relativistic systems. Therefore, Einstein's view of gravity is crucial to me. I consider the theory as the highest form of human creativity - just like the music of JS Bach. Over the past 100 years, the theory has been tested through various experiments and in different ways.
 
“The discovery of gravitational waves was the last hurdle to overcome in making this absolutely unfaltering. I am therefore thrilled by the discovery. It is absolutely astounding to imagine that the equations used to make the predictions about the gravitational-wave emissions when two gravitational whirlpools collide - as discovered on 14 September 2015 by LIGO - are basically Einstein's original equations that were published way back in 1916 - in other words, 100 years ago.
 
“The LIGO detectors have been operational since the early 1990s, but they had to undergo several stages of upgrades before being sensitive enough to make detections. LIGO is currently in its final stage, and is expected to function at optimal sensitivity only within a year or two. To be able to conduct the measurements at this stage is therefore a fantastic achievement, since much more funding will certainly be deposited in the project,” Prof Meintjes says.

Description: Prof Pieter Meintjes Tags: Prof Pieter Meintjes

Prof Pieter Meintjes
Photo: Charl Devenish

The search for gravitational waves by means of the Square Kilometre Array (SKA) is one of the focus points in research by both Prof Meintjes and PhD student, Jacques Maritz. This involves the study of radio signals from pulsars that might show signs of effects by gravitational waves. They are looking for signs of gravitational waves. The gravitational waves discovered and studied in this manner would naturally vary much more slowly than the signal discovered from the two colliding gravitational waves.
 
The discovery will definitely provide renewed impetus to the Square Kilometre Array (SKA) Project to use the dispersion of pulsar signals, and to search for the impact of gravitational waves on signals as they travel through the universe. According to Prof Meintjes, the SKA will definitely contribute fundamentally to the Frontier research, which will provide a good deal of publicity for the UFS and South Africa, if significant contributions are made by local researchers in this field.

Video clip explaining gravitational waves

 

  • The Department of Physics will present a general, non-technical talk concerning the recent detection of gravitational waves by the 2 Laser Interferometer Gravitational Wave Observatories (LIGO):

Wednesday 24 February 2016
11:00-12:00
New lecture auditorium, Department of Physics

 

 

 

 

 

 

 

 

 

 

 

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