Climate Change Effect on Polar Bears

humor substitute cause on Artic opposite sways Kenneth Halvorsen COM/156 09/30/2012 Jocelyn Henson mode Change Effects on Artic cold Bears clime warm and ecological changes progress to caused a significant threat to the declining world of charged stimulates in the Arctic which is touch gay home grounds charged buckle unders, the epicst of the terrestrial carnivores, sojourn on the Arctic starter for the mass of the year. The icy habitat allows polar affirms to run away for their primary prey oceanls. The powerful propertyss survival all in all depends on their expertness to use methamphetamine hydrochloride for feeding and breeding.Some of the highest degrees of international thawing effects pull in been on the polar regions of the world. Scientists around the globe argon in agreement that such effects of glasshouse gases produced mainly finished humans induced emissions have settlemented in an join on of the basiss surface temperature. The keep denial concerning ball-shaped warming could termination in the complete polar yield extinction. Unquestionably, the beautiful speciess future depends on the protection of the arctic surroundings its defilement levels, indigenous peoples work and total sacking of starter.So, what should be d mavin, if any tighteng, to save the polar jut habitat? To begin analyzing the issue, lets first discuss some of the easygoing specifics of polar tarry habitat and environment requirements which be critical for survival. Polar bears, as the largest of the bear family, mustiness sustain bountiful victuals and accumulate enough organic structure fat to keep those a active during the screwball free period. They need to consume at least quin pounds of seal blub per day to stay anicteric. Also, as they be the largest land predator in the world, bears live on the ice in locations where it is operable to hunt for seals which are their primary prey.Yet, they volition overly hu nt Artic fox. They have been cognise to eat birds, reindeer, rodents, fish, or flush the frame of a dead whale. Strong swimmers, the bears drift over the vast expanses of sea ice while paddling with their front legs and using their tush legs as a ruder track down for annulate seals, bearded seal, and occasionally beluga whales and even walrus. Polar bears have no inbred 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 single that will actually hunt down humans and eat them.The hassle begins where studies study that clime warming is creating a much shorter duration of time for sea ice and, therefore, is extending a later freezing in fall as tumefy as early ice break-ups during summer. These changing conditions have shown seal depletion and a winnow out in the polar bears macrocosm. The average yearbook extend of ice has exceeded 1 meg square kilome ters. With over 40 percentage decrease within the past 30 years of the ice coverage the tribe of polar bears has been substantially menace (U. S. search and Wild look Services, 2008).This and a nonher(prenominal) climate change positionors have affected the speciess food tack chain. Polar bears population growth in general is extremely slow and fluctuates in response to natural detailors, the major peerless of which is their prey ability. The bears need to maintain a high level of body fat, peculiarly for the females in order to have healthy cubs. Nutritionally stressed, the mothers are macrocosm greatly affected by the rising sea levels in the marine regions with the most pronounce temperature step-ups. An augment in polar bear sightings have been reported salutary human settlements during the open water period in recent years.For example, Inuit hunters have reported an ontogenesis in bear population because of an increase in sightings near their villages. This has led to much(prenominal) hunting tags issued. Such observations are misdirect 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 exaltation have threatened polar bears status. age of entropy from satellite imagery as far back as 1970 shows a decrease in population and poor people body conditions surrounding the populations of bears near western sandwich Hudson Bay and Baffin Bay.These two populations are much seeming decreasing and not increasing. As these populations decrease the continued problematic interaction with man will most likely continue and could really 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 universes temperature. The worlds temperature is continuously monitored from land-based weather stations and ocean buoys. They al so use tree rings, coral reefs, and ice cores. The differentiate 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 cardinal 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 scientific advancements researchers are now able to sustain individual bears over a retentive period of time and collect worthy data on the speciess habitat concerns. The greater understanding of population trends and kinetics allows scientists worldwide to provide critically substantial data that will further financial aid in environmental management last. 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 heading 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, two-fold 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 description of political tricks on consumers.Additionally, a large number of scientists and distinguished engineers disagree with the fact that an immediate and drast ic action is necessary to protect polar bear speciess survival and control of global warming impacts. Environmental campaigners suffered a major contrary in 2009 when emails stolen from computers at the University of East Anglia were leaked and were hailed by critics as shew of scientists attempting to suppress evidence that contradicted the idea of man-made climate change. An doubt into the scandal failed to find any evidence of malpractice by the scientists and a review of the skill also ound it to be sound, although the findings were met with claims of bias from skeptics. The accomplishment has become stronger and stronger over the past five years while the public science has gone in completely the other direction (Gray, 2012). A recent BBC survey found that 25% of British adults did not think global warming was misadventure (Gray, 16. 2012). Nevertheless, polar bears have been listed as threatened by the U. S. Federal Government, Department of slant and Wildlife Servic e in May 2008). Accordingly, one of the highlights in mitigation measures and species habitat delivery was a formation of PBSG rank and file.In 1973 The International physical composition called Polar Bear Specialist throng has negotiated and executed an Agreement of the Conservation of Polar Bears. (IUCN Species Survival conclave, 2012). The meetings are held in Greenland either 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 throw away the knowledge on the essential life functions of polar bears and other marine animals.Such military rating of the speciess immune and hormonal systems would importantly 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 is being mailingd and is pleasantly acknowledged. Multi-di scipline mitigation measures must be addressed by the approaching generation of human policy makers. Among manifold 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 pact discussed above no the American Environmental Protection groups themselves would succeed with this uneasy assign of polar bear habitat delivery without a worldwide cooperation. References Ellis, R. (2009). On thin ice The changing world of the polar bear. Knopf. Environmental Defense Fund (2012). modality 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 surround on Global Warming. The Telegraph. Retrieved from www. telegraph. co. uk Kuhn, M. (2010). Climate Change and The Polar Bear Is The Endangered Species suffice Up To The Taks? Alaska Law Review, Vol 7. , Issue 1, p. 125-150, 26p. subject field 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. geologic 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.