Polar bears
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Publicado: 4 de marzo de 2012
Polar Bear
The polar bear is a species of the order carnivorous mammal. He lives in the middle and polar ice zone of the Northern Hemisphere. It is the only super predator in the Arctic
HabitatThe polar bear is often regarded as a marine mammal because it spends many months of the year at sea. Its preferred habitat is the annual sea ice covering the waters over the continental shelf and theArctic inter-island archipelagos. These areas, known as the "Arctic ring of life", have high biological productivity in comparison to the deep waters of the high Arctic. The polar bear tends tofrequent areas where sea ice meets water, such as polynyas and leads (temporary stretches of open water in Arctic ice), to hunt the seals that make up most of its diet. Polar bears are therefore foundprimarily along the perimeter of the polar ice pack, rather than in the Polar Basin close to the North Pole where the density of seals is low.
Food
The polar bear king of the Arctic, feeding on allanimals except arctic foxes and wolves. Despite all their favorites are the baby seals and reindeer (which are much scarcer than the first) and get to eat about 30 kilos of food a day, and the puppies1 kilo. Bears do not drink water, because in their environment is salty and acidic. They take the fluids they need fromthe blood of their prey. It has also been recently discovered that can becomecannibalistic, especially males, as if they have too hungry, have no problem eating other bears in particular usually young or dead.
Why in danger?
Polar bears can only hunt during the polar winter,when a thick layer of ice forms over the ocean.
This layer of ice allowed to hunt. But in recent decades, an increased ocean temperature has accelerated the speed of the melt, reducing the hunting ofpolar bears.
Due to rapid snowmelt, many polar bears are starving.
While 15 years ago had a population of 1,200 polar bears in the area of Hudson Bay in Canada, now there are only 930 copies....
The polar bear is a species of the order carnivorous mammal. He lives in the middle and polar ice zone of the Northern Hemisphere. It is the only super predator in the Arctic
HabitatThe polar bear is often regarded as a marine mammal because it spends many months of the year at sea. Its preferred habitat is the annual sea ice covering the waters over the continental shelf and theArctic inter-island archipelagos. These areas, known as the "Arctic ring of life", have high biological productivity in comparison to the deep waters of the high Arctic. The polar bear tends tofrequent areas where sea ice meets water, such as polynyas and leads (temporary stretches of open water in Arctic ice), to hunt the seals that make up most of its diet. Polar bears are therefore foundprimarily along the perimeter of the polar ice pack, rather than in the Polar Basin close to the North Pole where the density of seals is low.
Food
The polar bear king of the Arctic, feeding on allanimals except arctic foxes and wolves. Despite all their favorites are the baby seals and reindeer (which are much scarcer than the first) and get to eat about 30 kilos of food a day, and the puppies1 kilo. Bears do not drink water, because in their environment is salty and acidic. They take the fluids they need fromthe blood of their prey. It has also been recently discovered that can becomecannibalistic, especially males, as if they have too hungry, have no problem eating other bears in particular usually young or dead.
Why in danger?
Polar bears can only hunt during the polar winter,when a thick layer of ice forms over the ocean.
This layer of ice allowed to hunt. But in recent decades, an increased ocean temperature has accelerated the speed of the melt, reducing the hunting ofpolar bears.
Due to rapid snowmelt, many polar bears are starving.
While 15 years ago had a population of 1,200 polar bears in the area of Hudson Bay in Canada, now there are only 930 copies....
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