COPENHAGEN: In Greenland, climate change isn’t just a danger to ecosystems but also a threat to history, as global warming is affecting archaeological remains, according to a study published on Thursday.

There are more than 180,000 archaeological sites across the Arctic, some dating back thousands of years, and previously these were protected by the characteristics of the soil.

“Because the degradation rate is directly controlled by the soil temperature and moisture content, rising air temperatures and changes in precipitation during the frost-free season may lead to a loss of organic key elements such as archaeological wood, bone and ancient DNA,” the report, published in the scientific journal Nature, stated.

The team behind the study, led by Jorgen Hollesen, has been examining seven different sites around the vast Arctic territory’s capital Nuuk, since 2016. In addition to organic elements, such as hair, feathers, shells and traces of flesh, some of the sites contain the ruins of Viking settlements.

Projections used in the study, which are based on different warming scenarios, predict that average temperature could increase by up to 2.6 degrees Celsius, leading to “higher soil temperatures, a longer thaw season, and increased microbial activity within the organic layers”.

“Our results show that 30 to 70 per cent of the archaeological fraction of organic carbon could disappear within the next 80 years,” Hollesen said. This means that these remains, some of which provide a unique insight into the lives of the first inhabitants of Greenland from around 2,500 BC, are at risk.

When comparing their findings with previous surveys of the sites they found evidence of degradation already ongoing. “At some sites we did not find any intact bones or pieces of wood, suggesting that these have disintegrated within the last decades,” Hollesen said.

Published in Dawn, July 12th, 2019

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