The area of Arctic sea ice declined during the past 30 years, reaching its nadir in 2007. According to the U.S. National Centre for Ice and Snow, the current trend persists. "Out of walruses on the coast is subject to a certain rhythm, but recently scientists have pointed out a larger number of species in new locations and at an earlier time. This year, the walruses began to leave the ice for three weeks earlier than last year. The massive output of walrus rookeries on may cause a "stampede", which usually kills many individuals, especially young ones, "- said in an interview with New York online edition LiveScience. In recent years, the expert noted, the migration of walruses are in an unprecedentedly large scale, sometimes the animals gather groups of more than 40 thousand individuals. In Russia, such clusters were first noted in Chukotka in 2007. In Alaska, near the Cape of Ice (Icy Cape) in 2009, research has shown that it is "crush" has caused the death of 131 individuals. Previously, WWF said that the accumulation of tens of thousands of walrus rookeries on results in the death of animals during panics, and the depletion of prey in the breeding grounds. The basis of prey of walruses are mollusks, crustaceans, some species of corals and other bottom-dwelling organisms. Typically, walruses, especially females with cubs during the summer a lot of time on the pack ice, getting on the ice between feeding. Walrus – are not the only animals that will affect global warming in the Arctic. Studies from the U.S. Geological Survey, showed that the shrinking of Arctic ice forces the polar bear to make many more vessels, which killed up to half their offspring.
Recent Comments
Related Posts
