The Polar Bear — Ursus maritimus

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The wolverine's niche: linking reproductive chronology, caching, competition, and climate (2012, background): “—Median reported birthdates of northern carnivores (Amstrup 2003; Anderson and Lovallo 2003; Cypher 2003; Paquet and Carbyn 2003; Pelton 2003; Powell et al. 2003; Schwartz et al. 2003).”
Long-distance swimming by polar bears (Ursus maritimus) of the southern Beaufort Sea during years of extensive open water (2012, background): “Polar bears (Ursus maritimus Phipps, 1774) are a circumpolar Arctic species dependent on the sea ice for hunting ringed seals (Pusa hispida (Schreber, 1775)) and bearded seals (Erignathus barbatus (Erxleben, 1777)), resting, mating, and denning (Stirling and Archibald 1977; Stirling and Øritsland 19”
Handbook of Capture-Recapture Analysis (2010, background): “Polar bears can live up to 30 years in the wild (DeMaster and Stirling E X A M P L E S 247 1981; Amstrup 2003), and are more individualistic than innate in their behaviors.”
Marine mammal conservation: over the horizon (2021, background): “Large reductions in the global polar bear population are predicted, however, if seaice loss continues as forecasted by climate models (Wiig et al. 2015).”