Tech & Science Life under Antarctica ice is adapting to climate change

09:42  14 november  2017
09:42  14 november  2017 Source:   msn.com

First luxury Perigord truffle is cultivated in Britain

  First luxury Perigord truffle is cultivated in Britain A black Perigord truffle has been cultivated in Britain for the first time, and the scientists who announced the breakthrough on Monday said climate change could make it a new British crop. The 16-gramme (0.6-ounce) specimen was cultivated in Wales in the roots of a Mediterranean oak tree that had been treated with truffle spores.Scientists from Cambridge University and Mycorrhizal Systems Ltd (MSL) said they also added lime minerals in the surrounding soil to make it less acidic.A Perigord truffle can be worth as much as £1,700 ($2,200, 1,900 euros) per kilogramme in Britain.

Sea ice around Antarctica is significantly dropping and beneath the ice , scientists are surprised by the rapid changes they're seeing in marine life in the Ross Sea. The data collected will keep them busy for at least a year, figuring out how the changing climate is impacting life under the ice .

Climate change affects marine animals on Antarctica 's seabed. September 26, 2011. No wonder the models were wrong, they didn't account for this. Another discovery abut climate ! Life adapts to what is happening in the climate ; it always has and always will.

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Sea ice around Antarctica is significantly dropping and beneath the ice, scientists are surprised by the rapid changes they're seeing in marine life in the Ross Sea.

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There has been no overall change in Antarctic sea- ice extent over the period 1973-1996. adaptive potential, through some insects (e.g., Strathdee et al., 1993) that can adapt their life cycles, to micro Elsewhere on continental Antarctica , climate change is also affecting the vegetation, which is

While some species are able to adapt to climate change , melting Antarctic ice will strip emperor penguins of their breeding and feeding grounds, putting their numbers at risk.

A scuba team of highly experienced divers are currently carrying out experiments on the sea floor, but for two of the women, it's their first time diving under the ice.

Until recently, Hamilton marine ecologist Samantha Parkes and Auckland PhD student Jenny Hillman had never been to Antarctica.

They started their training on site at New Harbour, jumping in the deep end through 3.5m of sea ice into ocean water so cold, it's -2degC. Dry suits keep them from freezing during the 45 minutes they stay underwater, diving to a depth of 20 metres.

"It's starting to feel really natural," Ms Parkes told Newshub. "It's not kind of that shock of, 'Oh my god we're under the ice'."

The scuba team have placed chambers on the sea floor, so they can closely study how the animals inside are reacting to a warming climate.

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However, the white continent also may hold the key to plant and animal life adapting to changing temperatures. Extreme Antarctica ice melt provides glimpse of ecosystem response to global climate change . October 13, 2016.

Water under sea ice is supersaturated with CO2 due to winter transport of CO2 from the deep ocean to the mixed layer. How external factors such as climate change , ozone depletion, UV exposure, and organism invasions will interact with the cold and restricted-light adapted life of Antarctica is largely

"The changes, since 2009, have been remarkable," expedition leader and principal investigator Dr Drew Lohrer said.

a man holding a gun © Provided by MediaWorks NZ Limited

In the past, the sea ice at New Harbour has been locked in place for more than a decade.

Now it's breaking out every few years, generating more food - micro-algae - for the underwater sea creatures to eat.

"The most surprising thing is how quickly the organisms - the animals - have responded to that food," Dr Lohrer said.

"The diversity is quite high and there are lots more organisms than we found last time we were here."

And while more food for these creatures may seem like a positive change, it may also mean more predators.

"There are always winners and losers when you change the conditions," Dr Lohrer said.

As the team studies those changes, the divers' safety is paramount.

a man sitting in a swimming pool © Provided by MediaWorks NZ Limited

There's another dive hole, in case a seal should claim the main one, and the divers are always tethered.

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We've historically adapted to climate change , and we should plan best for that. Ice in parts of western Antarctica are claimed to be melting, a study mentioned here on Yahoo, said that melting may be due to volcanic activity.

Researchers need good information about the under - ice ground of Antarctica to better simulate its response to changing environmental conditions. Finally, Some Not-Terrible Climate News: Greenland Not Melting Any Faster. Tim McDonnell. Video: Melting Sea Ice Has Changed Life in

Ms Parkes and Ms Hillman are now on their 12th dive, and despite nerves early on, they're hooked.

"I was kind of 50/50, stupidly excited, but there was always that little niggle in the back of your brain thinking you're going through a hole in the ice," Ms Parkes said.

"Once I was down there, you just kind of forget it and it's amazing - it's like the landscape of another planet."

Ms Hillman said, under the ice, it's a completely different world. The water is crystal clear and illuminated by the sun on the ice above.

"I've travelled a bit, but nothing compares to this," she said.

"It's really tiring, because you come up from every dive shivering - and that's a good dive. We've had some bad dives with leaks... you can't move, your hand just goes into a claw and it takes ages, even with a stove, just to warm up."

Despite the cold, the team are looking forward to their remaining dives, before they head home to New Zealand.

The data collected will keep them busy for at least a year, figuring out how the changing climate is impacting life under the ice.

Thousands of scientists issue bleak 'second notice' to humanity .
In 1992, scientists warned humanity about a host of impending ecological disasters. A quarter-century later, most of them have gotten worse.In late 1992, 1,700 scientists from around the world issued a dire “warning to humanity.” They said humans had pushed Earth's ecosystems to their breaking point and were well on the way to ruining the planet. The letter listed environmental impacts like they were biblical plagues — stratospheric ozone depletion, air and water pollution, the collapse of fisheries and loss of soil productivity, deforestation,  species loss and  catastrophic global climate change caused by the burning of fossil fuels.

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