Mammals
2010/9/16 | 分类:报关代理 | 标签: | views
Presently, arctic foxes and insular voles[1] are the only mammals resident on the island, though polar bears occasionally visit via pack ice. St. Matthew Island, in fact, represents the southern limit of the North American range of Ursus maritimus.[2]
In 1944, 29 reindeer were introduced to the island by the United States Coast Guard to provide an emergency food source. The coast guard abandoned the island a few years later, leaving the reindeer. Subsequently, the reindeer population rose to about 6,000 by 1963[3] and then died off in the next two years to 43 animals.[4] A scientific study attributed the population crash to the limited food supply in interaction with climatic factors (the winter of 1963-64 was exceptionally severe in the region).[1] By the 1980s, the reindeer population had completely died out.[2]