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Researchers find high microbial diversity in glacial streams

Researchers find surprising microbial diversity in glacial streams
The Swiss researchers have been studying the characteristics and strategies that microorganisms have developed to survive in the extreme ecosystems of glacier-fed streams. Keystone-SDA

Swiss researchers have discovered an incredible diversity of microorganisms in glacial streams around the world. However, this diversity is under threat as soon as it is discovered.

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For over five years, a team led by scientists from the Swiss Federal Institute of Technology Lausanne (EPFL) has collected and analysed samples from 170 glacial streams around the world.

The aim of the project, called “Vanishing Glaciers”, is to uncover some of the characteristics and strategies that microorganisms have developed to survive in the extreme ecosystems of glacier-fed streams. 

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Alpine permafrost is present above an altitude of 2,500 metres and stabilises geologically unstable slopes. Pictured: the Schreckhorn, a Swiss mountain in the Bernese Alps.

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Glaciers & permafrost

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Their results were published this week in two studies in the journals Nature and Nature Microbiology. The researchers show that these streams have a high microbial diversity.

+ Study predicts demise of European glaciers by 2100 if no action taken

“Glacial streams are the most extreme freshwater ecosystems on Earth,” research leader Tom Battin told the Keystone-SDA news agency. They had not expected to find a high level of diversity under these extreme conditions.

Adapted from German by DeepL/sb

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