The idea of ‘supersize’ viruses stored inside Arctic glaciers may sound like the beginning of an apocalyptic novel, but scientists have found that giant viruses are playing a key role in slowing the ice’s melting process caused by climate change.
You’ve likely heard that viruses have been frozen inside Arctic ice for millions of years. It’s speculated that they could become a threat to the planet’s the human population as glaciers melt rapidly due to climate change.
Off the back of a global pandemic, it’s not unreasonable to feel that the existence of these ancient, frozen viruses could be nothing but bad news. Recent studies, however, have offered a more positive angle.
After making a surprising discovery, scientists now believe that viruses burrowed inside ice caps could emerge as crucial players in the battle against climate change.
According to research published in the journal Microbiome in May, scientists at Denmark’s Aarhus University have found ‘supersized’ infectious agents in Greenland, where they seem to be slowing the melting of polar ice.
The presence of giant viruses inside ice appears to be inhibiting the growth of black snow algae, which is pictured above. This type of algae is notorious for causing ice melt faster, as it darkens the surface of ice and reduces its ability to reflect sunlight.
While invisible to the naked eye, viruses locked inside the ice are remarkably large, measuring about 2.5 micrometers – roughly 125 times larger than a typical virus. They’re about the same size as fine air particles, which are responsible for air pollution in most developed countries.
The supersize viruses’ genetic complexity is equally impressive, with genomes comprising around 2.5 million base pairs, compared to the 150,000 to 200,000 base pairs found in many bacteria’s DNA. Such size and complexity place them in a unique category.
However, more significant than their size is their impact on their hosts.
These giant viruses tend to infect algae that bloom on the Greenland ice sheet during the summer months. By affecting the growth of this algae, the viruses could hinder their ability to speed up ice melt.
What do the scientists say?
The discovery of supersize viruses in the Arctic is significant, as giant viruses have only been known to the scientific community for about 40 years. The first examples were found in the ocean back in 1981.
Since then, they’ve been found in a number of environments, including the human body, but never before on an ice sheet. Perini’s team discovered them by analysing the DNA from ice samples and detecting sequences that belong to giant viruses.
‘We don’t know a lot about the viruses, but I think they could be useful as a way of alleviating ice melting caused by algal blooms,’ said Laura Perini, a postdoctoral student and co-author of the study, in a press statement.
‘How specific they are and how efficient it would be, we do not know yet. But by exploring them further, we hope to answer some of those questions,’ she added. Perini and her team are now committed to finding out what roles viruses play in the icy ecosystem.
This knowledge comes at a critical moment. The Arctic is warming four times faster than the rest of the world, and natural solutions to combat this warming could be vital in slowing ice melt.
Arctic ice is so diminishing rapidly that current predictions suggest the region could be ice-free by 2040.
The loss of Arctic ice has widespread implications, including rising global temperatures, weather extremes, endangered coastal communities, food instability, wildlife decline, and methane release from permafrost.
By understanding and potentially harnessing the role of giant viruses in controlling algae species, scientists hope to develop new strategies to mitigate the rapid ice loss and its global repercussions.
The research from Aarhus University does exactly that, presenting a new avenue for combatting climate change.
It’s possible that the continued study of giant viruses and how they interact within the Arctic environment could offer a novel pathway for preserving this important and rapidly deteriorating region.
I’m Jessica (She/Her). Originally from Bermuda, I moved to London to get a Master’s degree in Media & Communications and now write for Thred to spread the word about positive social change, specifically ocean health and marine conservation. You can also find me dipping my toes into other subjects like pop culture, health, wellness, style, and beauty. Follow me on Twitter, LinkedIn and drop me some ideas/feedback via email.
In recent years, a significant number of foreign journalists have been forced to leave the country, raising concerns about press freedom and the quality of international coverage in India.
‘After 13 years working as a correspondent in India, the authorities have denied me a permit to work as a journalist,’ wrote Sébastien Farcis – who reports for various French and European media outlets –
Over the last few years, the aviation industry has had to come to terms with its emission problem. Sustainable aviation fuels (SAF) have been posed as a viable solution, but it looks like their cost is being passed onto consumers.
Missing the days when you could find flights abroad for as little as £20? I hate to be the bearer of bad news, but you shouldn’t hold your breath for...
While many people struggle with depression during dark winter months, the long and hot days of summer bring about a similar struggle for many. As the planet heats up, psychologists warn extreme and prolonged heatwaves could see more people affected.
Summertime Sadness isn’t just a song by Lana del Rey, it’s a genuine condition.
The clinical terminology for this is Seasonal Affective Disorder (SAD), characterized by an onset of depression...
As the rest of the world strives for gender parity, India continues to face significant challenges in achieving equality country-wide. Ranking 129 on the Global Gender Gap Index, the multifaceted issues contributing to this are clear, as are its implications for the nation’s socioeconomic progress.
Despite the fact that gender equality is now deemed a cornerstone of societal progress, India continues to grapple with persistent disparities.
This was made evident...
We use cookies to ensure that we give you the best experience on our website. If you agree to use this site, we will assume that you are happy with it! Privacy policyAgree
0
energy
0 comments
