Hidden Ecosystems? NASA’s New Evidence of Vast Life Lurking Beneath Antarctic Ice

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Hidden Ecosystems? NASA’s New Evidence of Vast Life Lurking Beneath Antarctic Ice
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Scientists using NASA's Earth observing system find evidence of phytoplankton blooms hidden beneath Antarctic sea ice. Until now, researchers believed the packed sea ice of the Southern Ocean (also known as the Antarctic Ocean) blocked all light from reaching the sea beneath. This prevented phyto

Researchers have uncovered evidence that vast phytoplankton blooms may be lurking beneath Antarctic ice.’s Earth observing system find evidence of phytoplankton blooms hidden beneath Antarctic sea ice.

Supported by plenty of light and freshwater with high iron content, phytoplankton blooms are often spotted as soon as the sea ice begins its seasonal retreat. Yet a team led by Dr. Christopher Horvat of “We found that nearly all examples of floats profiling under Antarctic sea ice record increases in phytoplankton before sea ice retreats,” said Horvat. “In many cases, we observed significant blooms.” Horvat also pointed out that the floats only sampled a very small part of the millions of square kilometers of sea ice that might host these under-ice blooms, so there may be many more hidden phytoplankton blooms with the potential to support other life out there.

However, the authors cautioned that the floats could sample under the ice but couldn’t return data from these positions, meaning that the coordinates for sample locations are not completely precise. “It is possible some of the high productivity events might be recorded in regions with low sea ice cover,” Horvat said.

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