Flight into the infinity
Migration of animals will lead to unpredictable consequences
When 13-meter gray whale was spotted in the Israeli town of Herzliya last year, scientists came to a startling conclusion: apparently, he came here from Canada, where increased in recent years temperatures have melted river routes that were previously icebound. The mass migration of animals can lead to fantastic consequences, according Azadnegar.
Scientists also have found plankton in the North Atlantic ocean, where it was not 800,000 years.
The incredible journey of the whale and the appearance of plankton in such an unusual place for him are the result of migration of marine organisms their the Pacific to the Atlantic via the Northwest passage. According to scientists, this is a worrying indicator of how global warming can affect animals and plants not only in water but also on land.
“These observations show how rapidly can change the climate of our days,” – said the British expert-biologist Philip reed.
According to him, the last time such a mass migration of sea creatures in the Pacific ocean was observed 2 million years ago. The ensuing changes have had an enormous impact on the lives of the North Atlantic ocean and resulted in the fact that some species jivotnymi, unable to resist newcomers to the fish and mammals in the struggle for food.
Changes in the chemical composition and temperature of the water in the ocean may have implications for fisheries, as some species may migrate North to colder waters, said the fellow, Netherlands Institute for the study of the sea Kate Philippart.
The Northwest passage was completely ice-free only twice in history – in 1998 and 2007. But each summer the ice retreats farther and farther North.
Plankton, which previously was recorded in the depths of the Atlantic ocean about 800,000 years ago, was discovered in the Labrador sea in 1999 and then, two years later in the Gulf of St. Lawrence. To date, the plankton has moved far to the South and reached the coast of new York, said Philip reed.
While some animals such changes may be positive, other animals and mammals can die out due to the fact that at some point they will have nothing to eat. Following this can dramatically change the entire biosystem of the world ocean, scientists fear.
In this case, other experts say that to sound the alarm too early, still, one wayward whale and plankton in the North Atlantic ocean is not a reason to panic.
“It is important that biologists have drawn attention to the fact that the Northwest passage is open, and the ice continues to melt. You have to understand, what consequences for ecosystems it can threaten. Here’s what you need to think,” said the British scientist.
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