Sea Ice Crossing by Migrating Caribou, Rangifer tarandus , in Northwestern Alaska

摘要: Long movements across sea ice by Caribou ( Rangifer tarandus ) in Alaska are relatively uncommon and not well documented. With rapidly diminishing cover arctic waters, these may cease altogether. On 26 May 2012, a crossed long span (57 km) of off the coast Alaska. The cow successfully after traveling 66 km on eventually reached calving grounds. highly dynamic nature ice, which is driven oceanic currents wind during spring break-up, presents inherent hazards different from lake ice. Based three years Global Positioning System (GPS) radio-collar data, routinely expanses (30 covering brackish Selawik Lake shorter stretches (<13 Inland their migration north. There was also single crossing fall south to wintering grounds that took place early November 2010. Five GPS-collared short frozen (14 Kotzebue Sound between Cape Krusenstern National Monument Baldwin Peninsula 2011.