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[科学美国人60秒] SSS 2020-01-21

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This is Scientific Americans 60 seconds Science. I’m C. Antarctica is a lonely continent but the Antarctica peninsula, the little tail that … out towards South America is a hub of human activity. More than 50 scientific research stations are based there. And in a recent travel season 42,000 tourists visited, mostly from cruise ships. Problem is when human goes somewhere, hitchhikers come with, like a nonnative flightless …, an insect that has already taken a residence in the peninsula region. “Its biomass is greater than the biomass of all the other … in the soil. It’s already kind of taken over the neutron cycling in that environment.” T is an environmental researcher with the British Antarctic Survey. He and a team of experts recently revealed a list of 103 marine … species that might be poised to take up residence on the continent. From that list, they pinpoint the 13 most likely to arrive, establish themselves and become invasive in the next decade. At the top, mussels which stick to ships and could carpet shore lines and smother native species. Antarctic shores and shallow waters could also fill with crabs, which haven’t existed in those habits for millions of years. “So the communities are just not used to the source of …coming in on a potential for a crabbed … or sitting on the sea bed …a frightening prospect.” On land the scientist flagged a might, a springtail and several species of button weed plants as potential invaders. The full list is in the journal Global Change Biology. Massive kind of … members on Antarctic is really one the last …there is we have on the planet. They want to keep this place … for a … of research because it’s told so much of … works, our climate works, our ecosystem can be together and how they function switch just incredibly important that we just keep it as … as we possibly can. But that task keeps getting more difficult because climate change is slowly … in the frozen colony making it easier for invaders to get a foot hole. Thanks for listening for Scientific Americans 60 seconds Science. I’m C.
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