Species recognized by Gardner A.L, 20-Aug-2007, ITIS Global: The Integrated Taxonomic Information System in

Attributes / relations provided by
♦ 1Myers, P., R. Espinosa, C. S. Parr, T. Jones, G. S. Hammond, and T. A. Dewey. 2006. The Animal Diversity Web (online). Accessed February 01, 2010 at
animaldiversity.org ♦ 2Ursus maritimus, Douglas P. DeMaster and Ian Stirling, MAMMALIAN SPECIES No. 145, pp. 7 (1981)
♦ 3de Magalhaes, J. P., and Costa, J. (2009)
A database of vertebrate longevity records and their relation to other life-history traits. Journal of Evolutionary Biology 22(8):1770-1774
♦ 4Diet composition of polar bears in Svalbard and the western Barents Sea, Andrew E. Derocher, Øystein Wiig, Magnus Andersen, Polar Biol (2002) 25: 448452
♦ 5Alaska Wildlife Notebook Series, Alaska Department of Fish and Game
♦ 6Alopex lagopus, Alexandra M. Audet, C. Brian Robbins, and Serge Larivière, MAMMALIAN SPECIES No. 713, pp. 110 (2002)
♦ 7Gibson, D. I., Bray, R. A., & Harris, E. A. (Compilers) (2005).
Host-Parasite Database of the Natural History Museum, London
Range map provided by IUCN (International Union for Conservation of Nature), Conservation International & NatureServe.