Scientists call the beginning of a new mass extinction on Earth

Ученые назвали время начала нового массового вымирания на Земле

The Earth is increasing concentration of carbon dioxide

The concentration of carbon dioxide in the ocean will reach a critical point even in the execution of the Paris and Kyoto agreements on climate change.

Following the mass extinction of animals on Earth will begin in the year 2100, when the concentration of carbon dioxide in the oceans exceeds the critical level, and the temperature of the planet will grow dramatically. The findings of scientists was published in the journal Science Advances.

“I’m not saying that a disaster will happen literally tomorrow. We just showed that the carbon cycle in the nature will be unstable in the near future, and his behavior is impossible to predict, if we continue to saturate the atmosphere and water with carbon dioxide. In the past, such periods of instability led to mass extinctions,” said Daniel Rothman from the Massachusetts Institute of technology.

Two years ago, environmentalists said that now on Earth there is a sixth mass extinction of animals. According to their calculations, in the era prior to the anthropocene – age of man, every hundred years, disappeared for about two mammal species, for every ten thousand of the then existing species of animals. In the XX and XXI centuries, this figure rose to 114 times.

Now, researchers have analyzed how changing conditions on Earth shortly before the Permian and other extinction.

The main common feature of all these events was that the beginning of each mass extinction was accompanied by abrupt changes in CO2 concentration in the atmosphere and how there was an exchange of carbon between the biosphere and inanimate nature. Traces of these changes can be easily noticed in how to change the ratio of carbon isotopes in the rocks of those times.

The researchers analyzed the remaining 30 cases, abrupt changes in the proportions of carbon isotopes is well known to all geologists, and match them with the varied appearance of the flora and fauna of the Earth in these episodes time.

It turned out that all these fluctuations in the proportions of carbon-12 and carbon-13 were accompanied by extinctions and dramatic reorganizations of ecosystems, in cases where these fluctuations in the concentration of isotopes of carbon was quite large and followed a simple mathematical formula, which brought scientists, analyzing the data gathered by them.

Using this formula, the researchers tested face a mass extinction the Earth today. It turned out that such a crisis could begin very soon, already in 2100 the concentration of carbon dioxide in the ocean will reach a critical point. And it will happen even in the performance of the Paris and Kyoto agreements on climate change.

As emphasized by the geologist, it does not mean that many animals will immediately vanish from the face of the Earth – the process of extinction may take tens or hundreds of thousands of years, during which the rate of species extinction will increase by several orders of magnitude. So humanity still has time to stop his attack or at least to reduce its scale.

As reported Корреспондент.netpreviously scientists call animals that will soon become extinct. It turned out that the first one will disappear not only the largest living creatures such as big cats, elephants, giraffes, or whales, but most small animals.

According to the materials:

RIA Novosti
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