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There are no complete, or "set in stone" answers. As the environment, and circumstances change, so do the time tables that researchers and scientists project. A recent report done by the U.S. Geological Survey done May 2008, projected that two thirds of the total Polar Bear population world wide, including Alaskan Polar Bears, could vanish by the year 2050. This was said to be a conserative estimate, considering the drop in birth figures and overall decline in the Western Hudson Bay, and Southern Beaufort Sea.
U.S. Geological Survey of May, 2008, scientist stated "conservativelty", a projected two thirds of the bear population in the world could disappear by the year 2050. This includes the Alaskan Polar Bear.
It should be noted that currently the only extensive research on the subject of these creatures is from the local Indians. They show a marked increase in there population. Polar bears are making a wonderful recovery and it should be displayed as a model of what man can do when he tries. Unfortunately, some would rather not view data.
It is unknown when polar bears will go extinct although some climate models are predicting an ice free arctic during the summer within the next 20 years which will make it very difficult for polar bears to hunt their main prey of ringed seals. Polar bears need sea ice to hunt and it is unlikely that pregnant females will be able to gain enough weight during the summer to allow them to stay in the den and nurse their young for the usual 5-6 months without food if their hunting habitat is gone. This means that more of the populations will be declining which is likely to lead to polar bears becoming extinct.
In 2009, the IUCN Polar Bear Specialist Group (PBSG) reported that there are 19 subpopulations of polar bears: 8 are declining, 3 are stable, 1 is increasing, and 7 are without sufficient data.
An estimate in this paper: Durner GM, Douglas DC, Nielson RM, Amstrup SC, McDonald TL, Stirling I, et al. Predicting 21st-century polar bear habitat distribution from global climate models. Ecol Monogr 2009;79:25-58: is predicting that two thirds of the current polar bear population will be gone by the middle of this century.
If global warming continues to warm, then the polar bear's sea ice in the Arctic will disappear. Polar Bears will have to adapt or die. They will probably have to move onto land where they will interbreed with land bears (grizzlies) and the polar bear species will die out.
No one knows that answer. But as of now, polar bears are not endangered, despite rumors to the contrary. Source; World Wildlife Fund
Sadly, with global warming not long, scientists estimate it may be as short as ten years
Almost certainly not. This animal has been around a long time, and survived many periods when the climate was warmer than it is now, plus, there is new evidence that the climate is actually cooling, not warming.
They say as the government of new non cool USA that all polar bears will be extinct by year 2045
As long is people make safe areas and rules people can't hunt they will be here for a few more years and you have to stop global warming!
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Which is bigger polar or grizzly bear?
The grizzly or brown bear and the polar bear are basicly the same size.
How does the polar bear help the polar ice?
why does the polar bear helps the polar ice
Is polar bears the biggest bear?
The Polar bear is the biggest bear.
Which animal is bigger the polar bear or the brown bear?
The Polar Bear.
How do the male polar bear and the female polar bear have the baby polar bear?
just like human do .
What can you do with a polar bear?
Nothing. A polar bear will eat you.
Is polar bear polo polar bear abuse?
no
Who lives in a polar bear's den?
A polar bear.
Is polar bear a bear?
Polar bears are bears
How is a seal different from a polar bear?
a seal is different from a polar bear because a seal has flippers and blubber a polar bear has 4 legs and has fur and a polar bear eats the seal but the seal doesn't eat the polar bear so the seal is prey to the polar bear k
How do you spell poala bear?
The correct spelling is "polar bear."
Which bear is the bigger brown grizzly or polar?
The Polar Bear.Polar bears
