"10.2193/2006-180" . "Effects of Earlier Sea Ice Breakup on Survival and Population Size of Polar Bears in Western Hudson Bay"^^ . . "71" . "2673-2683" . "2007"^^ . "10.2193/2006-180" . . . _:genid1 . _:genid1 . _:genid1 . _:genid1 . _:genid1 . _:genid2 . _:genid2 . _:genid2 . _:genid2 . _:genid2 . _:genid3 . _:genid3 . _:genid3 . _:genid3 . _:genid3 . _:genid4 . _:genid4 . _:genid4 . _:genid4 . _:genid4 . . . . .