Climate Change Effect on Polar Bears

temper shift effect on Artic icy causes Kenneth Halvorsen COM/156 09/30/2012 Jocelyn Henson humor Change Effects on Artic paired Bears modality warm up and ecological changes be in possession of caused a significant threat to the declining cosmos of diametric withstands in the Arctic which is poignant gentle home grounds frosty conceptualizes, the considerablest of the terrestrial carnivores, move on the Arctic scratch for the mass of the year. The icy habitat allows glacial binds to lead for their primary prey oceanls. The powerful notesss survival wholly depends on their world power to use sparkler for feeding and breeding.Some of the highest degrees of globose melting make open been on the polar regions of the world. Scientists around the globe ar in agreement that much(prenominal) effects of glasshouse gases produced primary(prenominal)ly through and through humane induced emissions have resolutenessed in an ontogenesis of the worldly conc erns surface temperature. The keep denial concerning global warming could allow for in the complete polar ingest extinction. Unquestionably, the beautiful speciess future depends on the protection of the arctic milieu its defilement levels, indigenous peoples escape and total sack of fruitcake rink.So, what should be d ace, if any trendg, to save the polar conduct habitat? To begin analyzing the issue, lets first discuss some of the smooth specifics of polar receive habitat and environment requirements which argon critical for survival. Polar bears, as the largest of the bear family, essential sustain abounding nutriment and accumulate enough clay fat to keep those a brave out during the ice free period. They need to consume at least cinque pounds of oceanl blub per day to stay firm. Also, as they atomic number 18 the largest land predator in the world, bears live on the ice in locations where it is workable to hunt for seals which argon their primary prey.Yet, t hey pull up stakes alike hunt Artic fox. They have been cognise to eat birds, reindeer, rodents, fish, or in time the trunk of a dead whale. Strong swimmers, the bears aver over the vast expanses of sea ice while paddling with their front legs and using their arrange legs as a ruder inquisition for annular seals, bearded seal, and occasionally beluga whales and even walrus. Polar bears have no natural predator and have no business organization of man which makes things dangerous for both. There are few animals that will attack a man unprovoked yet, the polar bear is angiotensin-converting enzyme that will actually hunt down humans and eat them.The caper begins where studies turn in that humour warming is creating a much shorter duration of time for sea ice and, therefore, is extending a later freezing in fall as salubrious as early ice break-ups during summer. These ever-changing conditions have shown seal depletion and a crepuscule in the polar bears race. The av erage yearbook extend of ice has exceeded 1 unrivaled million million square kilometers. With over 40 portion decrease within the past 30 years of the ice coverage the creation of polar bears has been substantially jeopardise (U. S. seek and Wild vitality Services, 2008).This and opposite climate change itemors have affected the speciess food tack on chain. Polar bears population growth in general is extremely slow and fluctuates in response to natural pointors, the major one of which is their prey ability. The bears need to maintain a high level of body fat, oddly for the females in order to have healthy cubs. Nutritionally stressed, the mothers are cosmos greatly affected by the rising sea levels in the marine regions with the most enunciate temperature gains. An append in polar bear sightings have been reported coterminous human settlements during the open water period in recent years.For example, Inuit hunters have reported an join on in bear population because of an increase in sightings near their villages. This has led to more(prenominal) hunting tags issued. Such observations are cheapjack and the increased sightings should be related to the fact that the bears are seeking an alternative food source. Additionally, offshore drilling for oil and transferral have threatened polar bears status. age of data from satellite imagery as far back as 1970 shows a decrease in population and scurvy body conditions surrounding the populations of bears near westbound Hudson Bay and Baffin Bay.These two populations are more belike decreasing and non increasing. As these populations decrease the continued problematic fundamental interaction with man will most likely continue and could very well increase, as the bears seek alternative food sources through the extended summer months (Stirling, Parkinson, Sep. , 2006). Scientists have very specific ways of tracking the res publicas temperature. The worlds temperature is eer monitored from la nd-based weather stations and ocean buoys. They also use tree rings, coral reefs, and ice cores. The demonstrate shows the earths temperature is increasing.Three main source possibilities could be responsible for the increase in global warming the sun, the earths reflectivity, and greenhouse gases. All three have been studied carefully, and the only one that matches up to the data is levels of greenhouse gases. The more fossil fuels we burn the higher levels of greenhouse gases (environmental Defense Fund, 2012). The polar bears survival completely depends on their ability to use ice for hunting, and some of the highest degree of global warming effects has been on the polar regions of the world.Fortunately, with proficient advancements researchers are now able to happen individual bears over a persistent period of time and collect semiprecious data on the speciess habitat concerns. The greater understanding of population trends and kinetics allows scientists worldwide to prov ide critically grand data that will further advocate in environmental management stopping point. Studies show a significant decrease in polar bear populations from 1984 through 2004 near the western coast of Hudson Bay and in the community of Churchill, Manitoba, Canada (Regehr, 2010).The level of human armorial bearing and recent commercial activities in the Artic, such as oil spills and contaminants, shipping and hunting have exposed polar bear population to higher risks and, as a consequence, have increased this speciess habitat food stress. Now, as much as one-third of the worlds polar bears are facing extinction. Interestingly enough, fivefold social groups believe that there is no reason for panic and some of the data used in polar bear population decrease is false. The controversial opinions are opposing to the entire fact of global warming and climate change with exposition of political tricks on consumers.Additionally, a large number of scientists and distinguished en gineers disagree with the fact that an immediate and drastic action is required to protect polar bear speciess survival and control of global warming impacts. Environmental campaigners suffered a major nose candy in 2009 when emails stolen from computers at the University of East Anglia were leaked and were hailed by critics as order of scientists attempting to suppress evidence that contradicted the idea of man-made climate change. An inquiry into the scandal failed to find any evidence of malpractice by the scientists and a review of the erudition also ound it to be sound, although the findings were met with claims of bias from skeptics. The cognizance has become stronger and stronger over the past five years while the public experience has gone in completely the other direction (Gray, 2012). A recent BBC tip found that 25% of British adults did not think global warming was casualty (Gray, 16. 2012). Nevertheless, polar bears have been listed as threatened by the U. S. Fe deral Government, Department of slant and Wildlife Service in May 2008). Accordingly, one of the highlights in mitigation measures and species habitat conservation was a formation of PBSG social rank.In 1973 The International governing body called Polar Bear Specialist convocation has negotiated and executed an Agreement of the Conservation of Polar Bears. (IUCN Species Survival sort, 2012). The meetings are held in Greenland every(prenominal) 3 to 5 years with the emphases on advancing the principles of the Agreement. As a result of the recently conducted series of meetings in June 2001 a working group has been assigned and funded to shed the knowledge on the essential life functions of polar bears and other marine animals.Such valuation of the speciess immune and hormonal systems would significantly improve the continued efforts of humanity in preserving the Artic environment. These and many other initiatives remain to be under development status. However, the progress i s being eyeshaded and is pleasantly acknowledged. Multi-discipline mitigation measures must be addressed by the coming(prenominal) generation of human policy makers. Among duplex models of polar bear population and habitat features one can clearly notice an inevitable and non-reversible threat to important specie of the worlds largest bear.Therefore, understanding of the climate change and a greater clearcutness in making management decision must remain being a worldwide concern. Neither the five countries of PBSG membership bound by a 1973 accordance discussed above no the American Environmental Protection groups themselves would succeed with this uneasy designate of polar bear habitat rescue without a worldwide cooperation. References Ellis, R. (2009). On thin ice The changing world of the polar bear. Knopf. Environmental Defense Fund (2012). humor Change Impacts. Retrieved from http//www. edf. org/climate/climate-change-impactsIUCN Species Survival Group (2012). IUCN/SSC Polar Bear Specialist Group. Retrieved from pbsg. npolar. no Gray, R. (2012, October). Climate Scientists Are Losing The Public weigh on Global Warming. The Telegraph. Retrieved from www. telegraph. co. uk Kuhn, M. (2010). Climate Change and The Polar Bear Is The Endangered Species motion Up To The Taks? Alaska Law Review, Vol 7. , Issue 1, p. 125-150, 26p. depicted object Geographic Society (2012). Polar Bear Ursus maritimus. Retrieved from http//animals. nationalgeographic. com/animals/mammals/polar-bear Peacock, E. , Derocher, A. E. , Thiemann, G. W. , Stirling, I. (2011).Conservation and Management of Canadas Polar Bears (Ursus maritimus) In A Changing Artic. Canadian Journal of Zoology. Regehr, E. V. , S. C. Amstrup, and I. Stirling (2006). Polar bear population status in the southern Beaufort Sea. U. S. geological Survey, Alaska Science Center, Anchorage, Alaska. USGS Open-File Report 2006-1337. 20 pp. Regehr, E. V. (2010). Climate Change threatens polar bear populations. ecologic Society of America. Stirling, I. , Parkinson, C. L. (2006). Possible Effects of Climate Warming on Selected Populations of Polar Bears (Ursus maritimus) in the Canadian Arctic. Artic Vol 59, No. 3, p. 261-275.