Global Warming Endangers the Lives of Grizzly Bears :: Exploratory Essays Research Papers

Global Warming Endangers the Lives of grey-haired Bears There ar less then 1000 grizzly bears leftover in the lower 48 United States, around four hundred of them unrecorded in Yellowstone National Park. These endangered, and beautiful bears, are holy terrorened by umteen factors, most signifi substructuretly the fragmentation of their habitat by roads. The latest thr flow to this species is the Global Warming trend that is holy terrorening the clear scramble smart Tree, which is very important to the grizzly bear diet.Grizzly bears need to eat a great deal of fat in the fall in order to prepare for hibernation. Female grizzlies who dont get enough fat may develop fertility problems. flannel Bark Pine trees produce fade nuts that are considered to be the grizzly bears favorite food and fork up up to 40% of the fat they need.Global Warming threatens the exsanguine Bark Pine in two ways. First it reduces the area in which the trees can grow. They depend on a cool, alpine habitat, so as the modality warms they are forced to grow higher on the mountains. Since mountains are conelike the higher they go, the less space there is for them to grow.Second, the warming climate creates mottle banks in which European Blister deplete thrives. European Blister Rust is a plant unsoundness that was accidentally introduced into the Pacific Northwest in 1906. Blister Rust girdles the infected tree, eventually killing it. Since the introduction of this disease more than 98% of White Bark Pine stands in the northwestern United States have been destroyed.In recent years Blister Rust has been renowned getting closer and closer to Yellowstone Park. White Bark Pine stands in Waterton Lakes National Park, Alberta and Blackfoot Reservation, Montana have suffered serious declines. Nearly 30% of the White Bark Pines in these areas have been killed and more than 70% of the remaining, living trees are infected. In the past five years Blister Rust has been seen in Gallat in National Forest, just south of Yellowstone, where Yellowstone grizzlies often forage for food.How does this threat to the White Bark Pine Tree also threaten Grizzly Bears? In two ways. First since the White Bark Pine Tree provides as much as 40% of the fat requirement of grizzlies, the loss of the White Bark Pine directly threatens the fertility of female grizzlies. With only 400 grizzlies living in an isolated pocket around Yellowstone Park, a threat to their fertility is a grave threat to their very existence.