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Study says that the Congo lakes release ancient carbon and raise climate concerns.

Scientists say that two large lakes in the Democratic Republic of Congo are releasing carbon which has been 'locked away' for thousands of yeas in peatlands around them. This could pose a threat to climatic stability.

Researchers from the ETH Zurich published their findings in Nature Geoscience. Tropical peatlands play a vital role in climate regulation.

Researchers from ETH Zurich have found that the ancient peat deposits in Lakes 'Mai Ndombe' and 'Tumba, which are some 3,000 years old, account for up to 40% of the carbon dioxide emissions.

In a press release, Travis Drake, the lead author of the study, said: "We were surprised that ancient carbon was being released through the lake."

Matti Barthel, co-author, said that the carbon?reservoir had a leak from which old carbon was escaping.

There is no clear way to determine how carbon gets from peatlands to lakes. Researchers believe the phenomenon may worsen due to climate change and changes in land usage, like the conversion of forestland into cropland. This increases the drought conditions.

The peat that is formed by the accumulation of dead plants does not decompose when it's flooded with water. However, as soon as the peat dries out, the organisms which 'break down? plant material revive, and the carbon returns to the atmosphere.

The Congo Basin's swamps and tropical peatlands cover just 0.3% of Earth's surface but store one-third the world’s carbon. This makes the area a global carbon reservoir.

Researchers say that it is 'one of the least studied major forest regions in the world,' and they need to do more research on its changing ecosystems. Clement Bonnerot (reporting, writing, and editing) Alexandra Hudson

(source: Reuters)