New evidence suggests that the woolly mammoth was decimated by climate change of prehistoric times.
Global warming is a process that has led to the extinction of past species in massive quantities. An analysis of the DNA record, carbon dating and geology of the earth by an international team led by researchers from the University of Adelaide and the University of New South Wales (Australia)show that brief hot periods during the erstwhile Ice Age led to a major wipeout of species.
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And that was before the appearance of mankind on the scene. On the contrary, periods of extreme cold did not have such drastic results. Species survived during the Ice Age. But it was the heat waves that spelled trouble.
It appears to be the case that the warm weather caused a sudden change in precipitation and greenery. Human beings are just the latest addition to the polluting agents on the planet. But one thing is for sure.
“This abrupt warming had a profound impact on climate that caused marked shifts in global rainfall and vegetation patterns,” said University of Adelaide lead author and Director of the Australian Centre for Ancient DNA, Professor Alan Cooper.
“Even without the presence of humans we saw mass extinctions. When you add the modern addition of human pressures and fragmenting of the environment to the rapid changes brought by global warming, it raises serious concerns about the future of our environment.”
Our present times are proof that the process can be taken to an extreme where it actually endangers the very survival of life on spaceship earth. The future indeed looks to be gloomy seeing the rapid climate change we are witnessing today.
The disappearance of large species such as dinosaurs and the woolly mammoth was related to the atmospheric transformations which were abrupt and a shock to the system. In the past, it was assumed that cold weather spelt the death knell for the majority of life forms.
But now it is pretty clear that it was when the balmy weather turned nasty with humidity, heat and the rays of the sultry sun baking the earth’s soil, that species began to go extinct on a large scale. More than 10,000 years ago, woolly mammoths and giant sloths began to undergo a decimation of their populations. Yet the biggest culprit up to the present is none other than man.
The appearance of mankind on the scene in the form of primitive tribes that engaged in hunting and gathering led to a final blow being delivered to the existence of ancient species. The domino effect was set into motion and most of the species vanished from the face of the earth.
“It is important to recognise that man still played an important role in the disappearance of the major mega fauna species,” said fellow author Professor Chris Turney from the University of New South Wales.
“The abrupt warming of the climate caused massive changes to the environment that set the extinction events in motion, but the rise of humans applied the coup de grâce to a population that was already under stress.”
The climate change throughout the Pleistocene led to a wiping of the slate and so mankind tookover the stage. And today it is man that is the dominant species on a worldwide level. The only question is: for how long?
The rape of the earth and mega doses of pollution will only lead to widespread destruction and devastation. Ultimately, man will himself be wiped out from the surface of the planet unless he stops this rampant trend in its tracks.
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The study published in journal Science.