Brazilian mammal-like fossil find suggests link to South Africa 

The discovery of a 260-million-year-old Tiarajudens eccentricus in Brazil that was announced to the world in March this year may for the first time suggest that anomodonts roamed both continents in the Permian period. 

The Tiarajudens find in Brazil consists of a partial skull with an ~120 mm long, laterally compressed canine, 5 leaf-shaped incisors and 13 expanded palatal teeth that formed a grinding surface. Scientists were able to recognise a resemblance to Anomocephalus, a basal anomodont recovered in 1999 from the Tapinocephalus assemblage zone of the Beaufort Group of the South African Karoo beds, near Williston in the Northern Cape. 

Previously, the two continent s  have had only dinocephalians and an aquatic reptile, Mesosaurus, in common. Basal anomodonts have been found in China, Russia and South Africa. The discovery of  Tiarajudens represents the first basal anomodont from South America and its discovery contributes to understanding of the biogeographical distribution of the Anomodontia and the early radiation of the Therapsida.

Read more:

Chinsamy-Turan A. Tiarajudens: A significant mammal-like reptile. S Afr J Sci. 107(5/6), Art. #717, 2 pages. doi:10.4102/sajs. v107i5/6.717 

A focus on land use and soil organic matter in South Africa 

This in-depth look at land use and soil organic matter in South Africa takes the form of two articles in the latest SAJS. The first of the articles reviews spatial variability and the influence of rangeland stock production and the second, the influence of arable crop production. 

Degradation of soil due to land use poses a threat to sustainable agriculture in South Africa, With stock farming uses the majority of land in South Africa, restoration of soil is of the utmost importance. The article suggests a countrywide baseline study to quantify organic matter contents within and between soil forms.

The ultimate aim of the study is to develop a soil protection strategy and policy for South Africa. Such a policy is important because organic matter influences the characteristics of soil disproportionately to the quantities thereof. Development of such a strategy and policy require cognisance of the extent and impact of soil degradation processes.

Read more:
Du Preez CC, Van Huyssteen CW, Mnkeni PNS. Land use and soil organic matter in South Africa 1: A review on spatial variability and the influence of rangeland stock production. S Afr J Sci. 2011;107(5/6), Art. #354, 8 pages. doi:10.4102/sajs.v107i5/6.354

Read more:
Du Preez CC, Van Huyssteen CW, Mnkeni PNS. Land use and soil organic matter in South Africa 2: A review on the influence of arable crop production. S Afr J Sci. 2011;107(5/6), Art. #358, 8 pages. doi:10.4102/sajs.v107i5/6.358 

South Africa loses distinguished poet 

Well-known poet, Stephen Watson, has died at the age of 56 in Cape Town, the city most depicted in his writings, along with the Cederberg where he walked all his life. 

PR Anderson of the University of Cape Town salutes Watson who in the last decade was the powerhouse behind UCT’s emergence as a creative writing school. He reviews his diverse writings which reflect the landscape of the city, Cape Town, and the Cedarberg, and the social and historical worlds underlying them. 

Read more:

Anderson PR. Stephen Watson: Poet, scholar and critic (1954–2011). S Afr J Sci. 2011;107(5/6), Art. #744, 2 pages. doi:10.4102/sajs. v107i5/6.744 

The impact of acid mine drainage in South Africa 

Environmental damage caused by acid mine drainage (AMD) in South Africa is severe and likely to continue for decades, posing a serious threat to future generations of South Africans. 

A review on the impact of AMD related to gold and coal mining maintains that the longer-term impacts of these industries, and especially the coal mining industry, are likely to be far more severe in South Africa than in other countries. This is attributed to South Africa’s unique combination of geography, climate, population distribution and the scale of the deposits. The coal mining industry, in particular, has had an adverse impact on the water quality in the Olifants River system. 

The review which focuses on mining in the Vaal and Olfiants River systems, calls for acumen in especially allowing further coal mining in the catchments of the Vaal River and rivers draining the eastern escarpment. 

These are not the only areas in the country afflicted by this problem, but because of the particular local conditions, the problems these two basins are huge by comparison and pose a serious threat to future generations of South Africans. 

Read more:

McCarthy TS. The impact of acid mine drainage in South Africa. S Afr J Sci. 107(5/6), Art. #712, 7 pages. doi:10.4102/sajs.v107i5/6.712

Land-cover transformation poses one of the greatest threats to global biodiversity and, in light of extensive land-cover change, protected areas are often viewed as a ‘Noah’s Ark’ for conservation. However, there has been growing awareness that formally protected area systems are failing to protect global biodiversity effectively.

Conservation initiatives have had to look beyond reserve fences, to the actual management of the surrounding landscape, to enhance the functioning of protected areas. Land-cover transformation beyond the borders of the protected areas may have potentially devastating impacts on the ongoing conservation efforts undertaken within these, should it continue unchecked.

Given the current government’s emphasis on socio-economic development, conservation has had to evolve in order to be politically acceptable. Conservation decisions cannot occur in isolation any longer; future conservation initiatives must explicitly acknowledge proposed socio-economic development agendas. The challenge now is how to rectify the failings of the current protection area system in order to maximise biodiversity protection, while addressing the unavoidable land-cover modification that is associated with economic growth. In order to ensure the best use of limited conservation resources and promote enduring biodiversity protection, conservation efforts need to be directed at areas that will remain intact and secure from future transformation.

In a first step towards such a conservation plan for the Kruger to Canyons Biosphere Reserve, the largest in South Africa and the third largest in the world, Coetzer et al. quantified land-cover changes in this landscape and found that 36% of the reserve underwent land-cover change between 1993 and 2006. Settlement areas increased by 40%, while the vegetation remaining intact in the surrounding areas declined. This loss of intact vegetation could result in fragmentation, which would affect ecosystem functioning. Although there were small declines in forestry and mining, agricultural usage in the reserve increased by 52%. These land-cover data, together with economic and biodiversity data, can help to reconcile the spatial requirements of socio-economic development with those of conservation in future conservation initiatives.

Read it in the July August volume of the South African Journal of Science: Coetzer KL, Erasmus BFN, Witkowski ETF, Bachoo AK. Land-cover change in the Kruger to Canyons Biosphere Reserve (1993– 2006): A first step towards creating a conservation plan for the subregion. S Afr J Sci. 2010; 106(7/8), Art. #221, 10 pages. DOI: 10.4102/sajs.v106i7/8.221.

The first person to describe a new fossil gets the rights to name it. This has got be done at the time of the first publication as the privilege is not retrospect. Hesitate and someone else will pip you at the post. The payout is pretty impressive because the once the fossil has been named, the name is there forever with your priority stamped all over it in Latin.

But not everything in the name game is about priority and bragging rights. The whole system of classification is an art, not a science, and the choice of name tells you as much about the researcher as it does about the fossil.

Lee Berger and his team have just had the rare opportunity to name a new hominid species.  They have chosen the name Australopithecus sediba for the debut of the fossils from Malapa in the Cradle of Humankind and the new taxon is on the tip of the tongue of lots of South Africans, from the Deputy Minister of Technology to the kids in school who have been given the chance to give a popular name for the fossils.  

So what is in the name? What statement has Lee Berger made with his choice?  In fact, he has made two statements, one that concerns the genus name Australopithecus and the second concerning the species name sediba.

Let’s start with the easy one: sediba.  The language is seSotho and the meaning is ‘wellspring’ or ‘fountain’. Not a bad choice at all. Making use of one of the indigenous languages of South Africa is a smart move if South Africans are going to ‘take ownership’ of this new specimen. If Berger really wanted to go back to ‘roots’ for the name, he could have chosen one of the ‘Bushman’ languages for inspiration in the same way that we have for our national motto. It reads: !Ke e: /xarra //ke, and means “Unity in Diversity” or more literally “Diverse People Unite” in the extinct language of the /xam. In fact, an extinct language is exactly what is needed for national motto as you don’t want confusion about the precise meaning and a dead language never changes. But seSotho is not only very much alive, it is the first language of 4 million South Africans and a second language of nearly the same number. This is about claiming heritage for the living, not the dead, and Berger’s selection is a good one.

The choice for the genus name needs to be viewed from a cold scientific perspective. Choosing a genus name is about linking the specimen to other discoveries and it plants a flag at a point on the evolutionary road. The specimens from Malapa were clearly related to other fossil forms from around the same age, so the choice was not about a new name, but it was about deciding which name to link it to. In the end Berger chose Australopithecus rather than the more controversial Homo. It doesn’t sound like it, but this is pure philosophy, not science.

Had Berger chosen Homo, he would have been recognising human-like attributes in the bones implying that they were ‘real men’ and not ‘ape men’.  The accepted consensus is that Homo had the ability to make tools, manipulate the environment, probably used speech, and, in Phillip Tobias’s words, was at a “new level of organisation”. But Berger has chosen to lump his new fossils into Australopithecus, meaning that his new discovery had not yet reached Tobias’s new level of organisation.  

But Berger hasn’t quite excluded his new specimens from the human line because the species name sediba implies that his species is at the point of transition from Australopithecus to Homo. Berger is quite up front about this. In his opinion, his discovery is the root of humanity as we know it.

Well this is where the fun in science begins. There has already been some debate about Berger’s claims. The fossil seems too late in time to be at the origin point for Homo. There are also other candidates and the anatomically oriented anthropologists will need to discuss the meaning of the morphology of the new specimens in the light of the detailed anatomy of its predecessors and contemporaries. As I have always told my students, the best thing to do is to wait when a new discovery is made and affinities are proclaimed. It will take at least 5 years for the consensus to develop and much academic blood will be probably be shed in the process.

Note: Read Prof Morris’s article on Australopithecus sediba appearing in the South African Journal of Science.

The common thread between all universities is that they are centres of debate and independent and critical thinking. In this issue, Nithaya Chetty discusses the threat that the suppression of academic freedom poses to South African universities, and raises his concerns regarding their corporatisation; and an associated marginalisation of the views of academics.

 He points out that there is a widely-held view in South Africa, that academic freedom is a front for the perpetuation of elitism, and resistance to transformation. He thus argues that in order for our universities to protect academic freedom, it is essential for them to embrace valid processes of transformation.

Read more:  S. Afr. J. Sci. 105 (9/10), 325 – 327.

South Africa’s gold production: not worth its weight in gold?

South Africa’s gold mining industry continues to be a major economic force in the country, but it is not nearly as important  as it used to be. South Africa has, for example, recently fallen into second place behind China in the world ranking of gold producing countries. Despite this decline in production, South Africa still claims first place in the world ranking of gold reserves.  Hartnady discusses the credibility of this claim using a critical analysis of gold production on the Witwatersrand. He argues that the Witwatersrand goldfields are 95% exhausted, and that it is time to examine the benefits of a declining industry against the costs to the environment.

Read more:  S. Afr. J. Sci. 105 (9/10), 328 – 330.

Possible termite fossils in South Africa

The range of possible trace fossil architectures found in the Lower Jurassic sandstones in the Karoo region is reported for the first time in this issue by Bordy et al. The architecture of these sandstone structures indicates that they are fossils of an early Jurassic social insect, and they may be the best preserved social insect traces from the former Gondwana reported to date. This discovery in South Africa, together with an increasing number of fossils attributed to termite origin in North America, suggests that sociality in insects originated in the early Mesozoic, before the breakup of Pangea, which would explain their worldwide distribution today.

Read more:  S. Afr. J. Sci. 105 (9/10), 356 – 362

Fire management in threatened fynbos

Brian van Wilgen reviews current and historical fire management practices in fynbos. In fynbos, burning was initially considered to be destructive and prevented where possible. But gradually, as the vital role of fire in fynbos ecosystems became better understood, managers turned to prescribed burning and experimented with different space and time protocols. Despite these policies of prescribed burning, wild fires remain the dominant feature in fynbos, fortunately driving a variable fire regime that remains broadly aligned with conservation objectives. The problem of conserving fire-adapted fynbos is complicated by invading alien trees that are also fire adapted. Despite improvements in control methods, alien trees, notably pines, continue to spread almost unchecked. Biological control offered some hope for controlling pines, but was ruled out as too high a risk for these commercially important trees. Failure to address this problem adequately will almost certainly result in the severe degradation of remaining fynbos ecosystems.

Read more: S. Afr. J. Sci. 105 (9/10), 335-342.

 SciELO focuses on developing countries where few end users have access to traditional peer-reviewed academic journals either online or in print form. Access to journals is subscription-based and can be very expensive. Only certain libraries carry them, meaning that there have been severe restrictions in accessibility and affordability up to this point. The Open Access platform for these journals aims to combat these restrictions, while simultaneously enhancing the international visibility of South African research.

Why go Open Access?

Open Access publishing allows research literature comprising academic peer-reviewed journals, conference papers and theses to be placed in an online portal from which they can be downloaded for use. The authors do not have to pay any type of publishing fee. However, it is important to realise that open access by no means equates to ‘self-publishing’ – all articles conform to the traditional process of journal publishing, entailing critical reading by several peer-reviewers who ensure that a rigorous standard of research is upheld. Open Access publishing merely makes these research results available and affordable to a wider audience.

Four journals to be uploaded to SciELO SA

The South African Journal of Science, published by the Academy of Science of South Africa (ASSAf), is the first of a number of leading existing peer-reviewed journals to be fully Open Access on the SciELO platform. Other scientific journals which are in the process of being uploaded are Koedoe, the South African Journal of Education, and HTS: Theological Studies.

Selection and Quality Control

Journals selected to be part of SciELO South Africa must first go through a rigorous process of quality appraisal, in which journal accreditation by the Department of Education is considered, along with IBSS and ISI rankings and peer-reviewing processes. This will ensure that the most reliable, credible and innovative research by South Africa’s top researchers will be available in full to any person with internet access and the desire to learn, at no cost. Actual usage by scholars and scientists is monitored by the indexing system in various ways, including journal impact factors, and article citation and download statistics.

From Brazil to South Africa

The implementation of this open and freely accessible online journal platform has been pioneered by the Scientific Electronic Online Library (SciELO) project, based in Brazil. Fully indexed, it has been successfully implemented in eight countries, mostly in Latin America, with others being in the developmental phases. SciELO South Africa is the first site of this growing system on the African continent. The initiative is led by Susan Veldsman, a specialist in the field of Open Access and Director of the Scholarly Publishing Unit at the Academy of Science of South Africa. She has been working in the information science sector for over twenty years, with a recent focus on Open Access journals.

As the country with the most HIV infections in the world, South Africa has the greatest need for an HIV vaccine. Rather than cutting back on vaccine development, the country should double its efforts in a smart and innovative way. History shows that vaccination is still the most effective way to counter viral epidemics – smallpox, measles, hepatitis and other infections have either been eradicated or successfully controlled. The lessons learned from developing the polio vaccine are useful reminders that making a vaccine is no easy task, and that we still face many obstacles.

 Read more:  S. Afr. J. Sci. 105 (5/6), 168-169.