… Pleistocene. Our results reveal striking synchronicity in the population dynamics of Beringian
lions and brown bears, … as synchronous local extinctions in Eastern Beringia during Marine …

… brown bear (Ursus arctos) is one of the survivors of the Late Pleistocene megafauna extinctions.
… dynamics [13], as more ancient signals may have been broken down by gene flow and …

… , there is ample evidence for bottom-up controls on megafauna population dynamics that
support the hypothesis that the demise of the steppe-tundra ecosystem was a climate driven-…

… of brown bear and lion populations on both sides of Beringia … brown bears, strongly
suggests a local extinction of brown … times, ancient population dynamics were dominated by a …

… causes of extinction and current extinction risk, evolutionary history (eg divergence), long-term …
and high inbreeding for ancient Pleistocene brown bears (π = 0.059; Ho = 0.081), polar …

… impact on ecosystem dynamics in these isolated islands. … obtained from a Pleistocene
brown bear fossil from Honshu … and potential extinction of brown bear populations on Honshu …

… sharing was from brown bear into polar bear, although gene … brown bear, and it suggests
that polar bears were recipients of external genetic variation prior to their extensive population …

… survived the final Pleistocene wave of extinctions, perhaps in … Furthermore, the brown bear
exhibits a dynamic spatial and … bears that occupied a Beringian refugium, from which bears …

… brown bears and further corroborate the hypothesis of several waves of migration in the
Pleistocene. … waves of dispersal to the islands of Japan, Eastern Beringia and North America. …

… downward demographic spiral, and track its population dynamics and range through to its
… were relevant to the extinction of those 38 genera at the end of the Pleistocene, a period for …