Sunday, September 17, 2017

Warm Antarctic caves harbour secret life: scientists

The caves, hollowed out by steam from 

, are light and could reach temperatures of 25 degrees Celsius (77 Fahrenheit), researchers said, raising the possibility of a whole ecosystem of flora and fauna deep beneath the frozen surface.
A study led by the Australian National University around Mount Erebus, an active  on Ross Island in Antarctica, showed extensive cave systems.
Lead researcher Ceridwen Fraser said forensic analyses of soil samples from the caves had revealed intriguing traces of DNA from algae, mosses and small animals.
While most of the DNA was similar to mosses, algae and invertebrates found elsewhere in Antarctica, not all sequences could be fully identified.
"The results from this study give us a tantalising glimpse of what might live beneath the ice in Antarctica -– there might even be new species of animals and plants," she said.
"The next step is to go and have a really good look and see if we can find communities living beneath the ice in Antarctica."
Despite the continent's freezing temperatures, Fraser said heat emanating from the volcanoes could make the caves quite hospitable, warm enough "to wear a t-shirt and be comfortable", with light filtering deep down where the overlying ice was thin.


Read more at: https://phys.org/news/2017-09-antarctic-caves-harbour-secret-life.html#jCp