Warmer temperatures in the Antarctic could threaten penguins, whales, seals and a host of smaller creatures, a marine biologist warns in a lecture to be given at Christmas. Lloyd Peck, of the British Antarctic Survey, argues that even a small rise in sea temperatures could have dramatic consequences.
"Antarctic animals -- in the sea especially -- are very sensitive to climate change and they are the early warning system for the loss of species on the planet. We should be watching for those because climate change is probably going to get rid of them before it gets rid of other species," he says.
"We know things are changing; it is going to be really unpleasant; we are going to lose things -- we just don't know how much," he said.
Peck, 47, a scuba diving expert on the strange fauna of the south polar seabed, will deliver this year's UK Royal Institution Christmas lecture, backed by film from Antarctica. The Christmas lectures for young people were founded by the physicist Michael Faraday in the mid-1820s and have been televised since 1966.
His message is that important species in the freezing southern seas are so sensitive to temperature shifts that they could perish in a world only a couple of degrees warmer.
"We take clams out of the sediment and let them bury themselves again. We take limpets off the seashore, turn them over and let them turn back again. If you warm them up by about two degrees or so from their normal summer temperatures, they lose the ability to do those functions," he says.
Antarctic krill, the tiny shrimp-like creatures that flourish in their billions, are also at risk. In winter, krill depend on thick mats of green algae that flourish on the underside of ice shelves which extend out of the polar darkness into the sub-Antarctic light.
As the oceans warm, the winter ice will retreat, and the algae will vanish.
"If one of the key species in the system goes, then very quickly you'd lose a lot of the system. And that would affect penguins, seals and whales. The fishery areas around the Antarctic would be affected," he said.
"So the animals that everybody is interested in -- the furry ones with big eyes, the penguins, the whales -- there is potential for them to be affected very quickly by the loss of a few species in the Antarctic food chain," Peck said.
The Antarctic continent is still cold. But the Antarctic peninsula, home to the British research bases, has warmed by up to 3?C in the last 50 years.
"We have seen big losses of ice shelves and glaciers, recession of ice, and have seen new habitable areas for animals on the Antarctic peninsula," Peck said.
"On this trip I saw grass growing in areas that I have not seen grass before. I am seeing mosses and animals on land that was covered in ice just five or 10 years ago," he said.
Seals and penguins are adapted to dramatic seasonal changes in temperature and travel huge distances for food. But polar life is unforgiving, and small cyclical shifts in temperatures in the equatorial Pacific already cause huge losses to penguin colonies further south.
"When you have low krill stocks the penguins die, and they die when the chicks get to fledgling age. The time when the chicks need food most is just when they are about to go to sea. If the food supply is not enough, you can have 95 percent or 99 percent mortalities in a couple of weeks," Peck said. "The whole place goes from a mass of penguin chicks to a big mass of dead bodies all over the place."
Peck was born in 1957, the son of a steel foundry worker, and he still isn't quite sure how he became a marine biologist in the world's emptiest continent.
"My mother and father were desperate that I wouldn't work in a heavy industry. My father would say to me, `If you work down the pit or in a steel foundry when you are grown up I am going to cut your hands off,'" he said.
He became fascinated by how animals use energy. The Antarctic proved to be the perfect laboratory, because its denizens have to cope with extremes. So, of course, do its scientists.
"The whole world is just flat and white for as far as you can see in all directions and the air is so clear that you could see a mountaintop 50 or 60 miles away, and it is so quiet that you can have a conversation with somebody a quarter of a mile away because there is no background noise," he said.
"On a still day, it is a really surreal world. And then the wind blows, and the snow starts to whip off the ice, and you can't see anything," he said.
"Visibility is about two meters, so you just stay inside," he said.
US President Donald Trump created some consternation in Taiwan last week when he told a news conference that a successful trade deal with China would help with “unification.” Although the People’s Republic of China has never ruled Taiwan, Trump’s language struck a raw nerve in Taiwan given his open siding with Russian President Vladimir Putin’s aggression seeking to “reunify” Ukraine and Russia. On earlier occasions, Trump has criticized Taiwan for “stealing” the US’ chip industry and for relying too much on the US for defense, ominously presaging a weakening of US support for Taiwan. However, further examination of Trump’s remarks in
It is being said every second day: The ongoing recall campaign in Taiwan — where citizens are trying to collect enough signatures to trigger re-elections for a number of Chinese Nationalist Party (KMT) legislators — is orchestrated by the Democratic Progressive Party (DPP), or even President William Lai (賴清德) himself. The KMT makes the claim, and foreign media and analysts repeat it. However, they never show any proof — because there is not any. It is alarming how easily academics, journalists and experts toss around claims that amount to accusing a democratic government of conspiracy — without a shred of evidence. These
China on May 23, 1951, imposed the so-called “17-Point Agreement” to formally annex Tibet. In March, China in its 18th White Paper misleadingly said it laid “firm foundations for the region’s human rights cause.” The agreement is invalid in international law, because it was signed under threat. Ngapo Ngawang Jigme, head of the Tibetan delegation sent to China for peace negotiations, was not authorized to sign the agreement on behalf of the Tibetan government and the delegation was made to sign it under duress. After seven decades, Tibet remains intact and there is global outpouring of sympathy for Tibetans. This realization
Taiwan is confronting escalating threats from its behemoth neighbor. Last month, the Chinese People’s Liberation Army conducted live-fire drills in the East China Sea, practicing blockades and precision strikes on simulated targets, while its escalating cyberattacks targeting government, financial and telecommunication systems threaten to disrupt Taiwan’s digital infrastructure. The mounting geopolitical pressure underscores Taiwan’s need to strengthen its defense capabilities to deter possible aggression and improve civilian preparedness. The consequences of inadequate preparation have been made all too clear by the tragic situation in Ukraine. Taiwan can build on its successful COVID-19 response, marked by effective planning and execution, to enhance
RSS