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Showing posts with label snow animals. Show all posts
Showing posts with label snow animals. Show all posts

Polar Bear Migration Season Fully Underway


Winter season is migration season. In the past month alone, a small town in Canada had seen hundreds of polar bears make the annual trudge back to Hudson Bay, where the ice is freezing once more after the summer melt. Each autumn, the bears pass by the town of Churchill, in Manitoba, Canada, considered as the “polar bear capital of the world.”
Because of their regular annual migration, this group of polar bears is also known as the most studied group of polar bears in the world, with the renowned Dr. Ian Stirling first beginning his groundbreaking research on these animals some 40 years ago.  The regularity in which this particular population comes ashore each year also makes them easy to count, as Steven Amstrup of  Polar Bears International points out.

With a population of just 900 people, Churchill is no doubt a small town, but it boasts of having several hotels, with tourists coming in droves during the winter to see the polar bear migration. The tourist draw is further enhanced by regular sightings of adorable beluga whales at the Churchill River’s mouth. Its’ estimated that around 10,000 tourists make the trip to this town each year.

With the seasonal freeze approaching, polar bears have consistently gathered along Cape Churchill’s coastal areas, giving people the opportunity to see these majestic animals in the   form the safety of tundra buggies, huge all-terrain vehicles that shuttle out tourists during the winter.

To prevent bear attacks, though uncommon but are known to happen, Churchill residents make a racket and fire shotguns with rubber bullets to ward off the animals. The town also closed its dump, which used to draw the bears.

Read the full story on National Geographic.





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Climate Change Affects Hudson Bay Polar Bear Population


The seasonal ice freeze in Hudson Bay is underway, which makes it time for the regular migration polar bears make to the coastal areas of Churchil, Manitoba.

Ursus maritimus, the largest bear in the world and the apex predator in the Arctic, relies heavily on sea ice for survival. These patches of frozen seawater serve as a crucial platform for the bears to hunt for ringed and bearded seals.
During the summer, when the ice melts for several months, polar bears go inland, conserving their energy in what’s known as a ‘walking hibernation; state. This was the cycle for hundreds of years, but serious changes are affecting polar bears, particularly the populations that regular come to Hudson Bay.

Research for the past 40 years shows sea ice cover in the Arctic declined by as much as 30 percent since 1979. According to Steven Armstupf of Polar Bears International, as greenhouse gases continue to reach ocean temperatures, polar bears are finding themselves staying longer on land.

For instance, the Hudson Bay polar bear population now spends an average of close to 30 days longer than they did three decades ago. That means the bears end up losing more weight, about 2 pounds, according to research, for each day they spend on land, and are therefore lighter by 60 pounds than they were 30 years ago.

This drop in weight also means polar bears are giving birth to smaller cubs, which can lead to problems surviving in the wild.  It’s theorized that polar bears ‘will be the first to go’ in a warming world, since depend on a habitat that melts once temperatures rise. If nothing changes, these animals could go extinct in the wild by 2050.

Read the full story on National Geographic.





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