Wednesday, July 1, 2020

World's largest graveyard of Dinosaurs found in South Africa

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Nikhita Gautam

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World's largest graveyard of Dinosaurs found in South Africa

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Global Views 360

Publication Date

July 1, 2020

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‘African dinosaurs’ exhibit at the Iziko South African Museum in Cape Town

‘African dinosaurs’ exhibit at the Iziko South African Museum in Cape Town | Source: Bruce Anderson via Wikimedia

In a village in the eastern cape of South Africa lies one of the most significant dinosaur sites ever found in the world. The site was discovered when a shepherd, Dumangwe Thyobeka found a large bone on his way to his great-grandparents’ graves, in 2015. He then took the bones to a local dinosaur enthusiast, James Rhalene. Commenting on this discovery " Mr. Rhalene said, "Growing up we were told dinosaurs were a myth, I thought they were only tales our grandparents would tell around the fire at story time", and It wasn't until reading some books that I started to believe they may be real. I've been looking into the existence of dinosaurs since 1982. He added, "You can imagine my excitement at being part of this and discovering them in my own backyard. I am so proud. Books will be written about our small village; the world will come to know of us through this discovery.”

These bones are more than 200 million years old, of around the end of the Triassic era and the beginning of the Jurassic one. When the village elder, Sginyane Ralane came to know about the discovery, he reached out to universities in South Africa for looking into it. The news eventually reached Prof. Jonah Choiniere from the University of Witwatersrand in Johannesburg, and in 2018 Jonah and his colleagues started excavating the site. “It has been one of those places where you sometimes find yourself literally tripping over a dinosaur bone. There are very few other sites I've had the chance to work where we have this richness of fossils.” says Prof Paul Barett, a dinosaur expert at The Natural History Museum, UK, after he joined the team.

A reason why this area is abundant in fossils, Natural History Museum explains, is because of the ancient river systems in the area. The area is arid for most of the year now, and the rivers flow only seasonally. However, in the ancient times, there were vast river systems flowing year-round in the region, with wide, shallow rivers which would consequently form a layer of rock 210 million years old which is up to 500 meters thick in some regions. These rivers supported diverse wildlife, including ancestors of crocodiles, possibly those of turtles and mammals and fish, amphibians and reptile-like animals. The existence of such large rivers meant that dead animals nearby would be buried in sediment before they decomposed.  

This discovery is scientifically important for a number of reasons; the era from which these bones are found is a boundary in which a mass extinction occurred. Prof. Jonah is trying to understand how the animals from before that extinction survived and how they flourished after. In the Triassic era, there were multiple dominating animals, like the crocodiles, big mammal-like animals and dinosaurs. In the Jurassic era, however, the dinosaurs are clearly dominating. Why this happened is unclear, and the rocks and fossils from this site might help with that. There were also other animals along with dinosaurs in this site which make it noteworthy. Of the animals found, there were rauisuchians, which relate to modern-day crocodiles, and were dominant on land during the Triassic. The team also found cyclodonts and dicyclodonts, where the cyclodonts are the early ancestors to all mammals, and dicyclodonts are an even earlier branch of the mammalian family tree.

All of these have a significant impact on the community too; the team signed a memorandum of understanding with the local government with huge. After the signing, local officials visited the site at Qhemega. The team has been trying to use the heavy machinery they had brought for moving fossils for improving access in and to the village. They are also developing a curriculum in high schools to include topics about fossil sites and to add geography to the curriculum, to train the younger generation about the mapping used in excavation and in many other scientific fields especially relevant in the mineral-resource rich South Africa.

So far, this site has only provided benefits for everyone involved; new discoveries and confirming data for the scientific community, and economic access, increased opportunities and a matter for pride for the local community.

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February 4, 2021 5:06 PM

Environmental Impact Assessment (EIA) 2020: Why the draft is being opposed in India?

The Ministry of Environment, Forest and Climate Change (MoEFCC) sent a shockwave through the country when it released the Environmental Impact Assessment 2020 draft notification on March 12, 2020, amending the 2006 version.

The EIA serves as a means for the industries to obtain environmental clearances for their projects. The proposed projects are brought in front of the concerned public to be discussed and debated. If the projects proposed by the industries disturb the ecology and people living in that particular area to a large extent, then the Government cannot give permission for the project to continue.

There are several things included, or excluded, in the 2020 version which have enraged environmentalists, nature lovers and numerous concerned citizens across India.

Firstly, it includes post-facto approval. This means that any factory which has already begun with construction, will get a clearance, irrespective of the environmental damage it has already caused. However, the owners of the concerned factory will have to pay a fine of a certain amount.

Secondly, the new draft notification is released only in Hindi and English. Considering the lingual diversity of India, the communities which are not fluent in either languages will not know what the notification is about. This will reduce transparency and the livelihoods of such communities might get demolished without any warning.

The 2006 notification made it mandatory for every company involved in a project to submit a report every six months, verifying that the company is working within the terms of the granted permission and not going overboard with the available resources. The 2020 draft has extended the timeline of report submission once in twelve months. Moreover, certain projects like expansion of highways and road construction through forests are exempted from getting clearances.

Himalayan foothills, Sikkim, India | Source: Flowcomm via Flickr

Such features of the 2020 draft violate norms of the Environmental Protection Act (EPA, 1986) and also indicate that the scales are tipping dangerously towards the big industries, at the cost of our planet’s health. Livid cries have erupted from the people, especially those living in North-Eastern India and foothills of the Himalayas.

Himalayan ecology is at the brink of fragility and it requires stringent monitoring laws, the opposite of what EIA 2020 offers. "The Himalayan region today is in the most vulnerable position with massive climate-induced disasters, increasing deforestation, loss of biodiversity etc. Amending environmental norms will accelerate the ecological crisis in the Himalayas" says Ravi Chopra, a renowned environmentalist from Dehradun.

Since the draft has not come out in regional languages, the Karnataka High Court restrained the government from publishing the final document till it was accessible to a wider audience.

Although the government extended the deadline from June 30 to August 11, 2020, for the general public to pool in their opinions through emails, it shut down three main online websites on which youngsters of this country protested against EIA 2020. “We reasonably have a clear basis, based on our correspondence as well as our technical analysis, that this was a domain seizure by the government of this website” says Apar Gupta, executive director of Internet Freedom Foundation (IFF).

The EIA 2020 amendment does not do justice to the fundamental principles of environmental impact assessment and is more focussed in easing the clearance for the industries than the protection of the environment.

Economic growth, no doubt is important, more so at this trying time. However we should also bear in mind the cost which is to be paid for it, sooner or later.

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