Effects of Global Warming on Polar Bears Essay Example

Effects of Global Warming on Polar Bears Essay Example Effects of Global Warming on Polar Bears Essay Effects of Global Warming on Polar Bears Essay No 1 is safe from the rough effects of planetary heating. But if there is one species which suffers the most. they are the polar bears who can merely last under highly cold clime. Although their existent population is difficult to find. they are believed to be about 20. 000 to 25. 000 found throughout the Arctic Ocean and next seas ( World Wildlife Organization ) . Polar bears’ home ground is about covered by sea ice all twelvemonth unit of ammunition ( Great Bear Organization ) . The country is said to hold a delicate ecosystem. necessitating longer clip to alter and to retrieve when disrupted or damaged. However. research shows that the Arctic is most likely to be ice free between 2013 and 2040 for the first clip in history. The part has been sing cutting of the polar ice cap due to warming of temperatures. With the thaw of the ice comes the devastation of the life of the species which thrives in the Arctic. Polar bears. seals. including endangered species like seahorses and giants. are forced to withdraw to environment less suited for their brand up. Further. scientists fear that big sums of liquid ice enter the North Atlantic and interrupt the planetary current form. The thaw of the Arctic ice besides entails smaller runing country for polar bears. Sealing waxs are their favourite and they can non track them where the sea is unfrozen. They besides eat workss. including berries. roots. and kelp. but none of these can fulfill their Calorie demand. Their organic structure needs big sum of fats from Marine animate beings for they are active year-round. Decrease in Arctic sea ice can take to 67 percent loss of the full polar bear population in 50 old ages ( Bear Planet Organization ) . Though polar bears are exposed to other hazards such as pollution. oil and gas geographic expedition. legal and illegal hunting. planetary heating remains the biggest menace to their endurance. They experience malnutrition and famishment due to habitat loss. Melting ice force them to shore before they have acquired adequate fat militias to last the period of scarce nutrient during the late summer and early autumn. Thining ice are surface hard to walk on because they deform more easy which makes it more hard for them to run for nutrient. They besides need to swim wider spreads between ice which farther used up their energy and sometimes take to submerging. Malnourished female polar bears result to take down generative rates and lower endurance rates among greenhorns and juvenilles ( Rosing. 2006 ) . Thining ice make it difficult for grownup females to happen couples. And when they do happen 1. the difficult pursuit starts for a suited pregnancy lairs. Underground lairs have inclinations to prostration or have low insulative power to supply heat for freshly born greenhorn. Dens built on multi-year ice may see motion that may ensue in longer distances for female parents and immature greenhorns to walk when they return to seal-hunting countries. There is besides a hazard of disease-causing bacteriums and parasites to boom more readily in a heater clime. In Western Huson Bay. ice interruptions up earlier than it did 30 old ages ago during late spring season which shortens the hunting season for polar nears ( National Wildlife Organization ) . Their population declined by 22 per centum from 1987 to 2004 and their organic structure status is much different. weighing 60kg igniter in 2004 than in 1980 when likely pregnant female polar bears weigh around 290kg. In 2005. Alaska recorded four drowned polar bears who made longer swim than they usually do when runing for nutrient. Alaska besides documented higher mortality rates among polar bear greenhorn and different denning sites for pregnant polar bears. Photos and pictures of polar bears’ battle are everyplace. In 2008. US Department of the Interior listed Polar Bears as threatened species under the Endangered Species Act and thaw of the sea ice in the Arctic as the biggest danger to their endurance ( The Humane Society of the United States ) . They are the lone species aside from elkhorn coral and staghorn coral to be put on the said list. However. the determination was reversed following the commercial and scientific informations that they are increasing in Numberss in the past 30 old ages. As it presently stands. the US Fish and Wildlife Service see polar bears as threatened species intending anytime their home ground will disappear and their position will alter to endangered before they finally become nonextant. In Canada. polar bears were recommended by the Committee on the Status of Endangered Wildlife in Canada to be placed under the list of species of particular concern . This list allows for a direction program to be written in five old ages. which was criticized by World Wide Fund for Nature as being excessively long to do a substantial impact to habitat loss from climate alteration. Since their current position is threatened species. it is non excessively late for attempts toward salvaging their home ground from farther debasement ( Bear Planet Organization ) . The simplest but the best manner to extenuate the effects of planetary heating is to halt C dioxide ( CO2 ) emanations. Recycle and reuse merchandises and utilize energy efficient contraptions to cut back CO2 in the ambiance. Polar bears deserve a opportunity. Bear Planet Organization. Polar Bears and Global Warming. July 8. 2009. lt ; hypertext transfer protocol: //www. bearplanet. org/global-warming-polar-bears. shtml gt ; . Great Bear Organization. Polar Bear ( Ursus Maritimus ) . July 7. 2009. lt ; hypertext transfer protocol: //www. greatbear. org/polarbear. htm gt ; . The Humane Society of the United States. Polar Bears. July 8. 2009. lt ; hypertext transfer protocol: //www. hsus. org/marine_mammals/a_closer_look_at_marine_mammals/polar_bears/ # Polar_bears_top_predators_in_their_arcti gt ; . National Wildlife Organization. Polar Bear. July 8. 2009. lt ; hypertext transfer protocol: //www. nwf. org/polarbear/ gt ; . Rosing. Norbert. The World of the Polar Bear. New york: Firefly Books. Ltd. 2006. World Wildlife Organization. WWF: A Leader in Polar Bear Conservation. July 7. 2009. lt ; hypertext transfer protocol: //www. worldwildlife. org/species/finder/polarbear/polarbear. hypertext markup language. gt ; .