Polar Bears

Only available on StudyMode
  • Download(s) : 168
  • Published : March 10, 2013
Open Document
Text Preview
Global Warming has had a great impact on the polar bears To have a better understanding of how it is having an impact on them we need to understand the polar bear’s ecological niche. Polar bears are known to be the biggest carnivore on land. Polar bears have lots of fur on their body and on their feet, that act as snowshoes. Their creamy-white fur is dense and water-repellent, enabling them to shake dry after swimming. Polar bears have many adaptations that help them survive. They have long curved claws that are sharp to help them cling to the ice. They also have blubber under their skin which insulates them from the cold weather. You will find Polar bears in Polar Regions, these regions include Russia, Norway, Greenland, the United States and Canada. Most of their time is spent near artic ice floes and when they are on shore they remain near the water. Polar bears feed mainly on ringed seals and bearded seals, depending on their location, they also eat harp and hooded seals and scavenge on carcasses of beluga whales, walruses, narwhals, and bowhead whales.The

birth potential of polar bears is 1-3 cubs per birth and on very rare occasions they give birth to 4 cubs. One to two polar bears will reach reproductive age. Polar bears mate between March and June once a year and give birth between the months of November to January. Their length of reproductive life is 25 years of age. Abiotic factors that prevent their population from attaining their biotic potential are as followed: weather, unfavorable chemical environment and the amount of light. The biotic factors are as followed: insufficient food, high effectiveness of predators and many strong diseases and parasites (NS,

p. 78). Polar bear are potentially threatened species living. The polar bear is likely to become endangered if factors that make it vulnerable are not reversed. What are these factors and what can be done to help them?

The main threats to the Polar Bears’...
tracking img