Brown bear-human interactions were observed in 1993, 1995, and 1997 at Kulik River in Katmai National Park and Preserve, Alaska. We analyzed these interactions using survival analysis, creating survival curves for the time that bears remained on the river in the presence, and absence, of human activity. Bear-only survival curves did not vary significantly between years (p = 0.067). Ninety-seven...

OBJECTIVE Sleep problems are experienced by 25-30 percent of children and adolescents, regardless of age. The purpose of this study was to investigate if there is any relationship between gender or school entrance and sleep complaints. METHODS From June 2008 to May 2009 children aged 2 to 12 years were selected by clustered randomization of families. The Persian version of the BEARS questionn...

The Asiatic black bear population in Dachigam landscape, Jammu and Kashmir is well recognized as one of the highest density bear populations in India. Increasing incidences of bear-human interactions and the resultant retaliatory killings by locals have become a serious threat to the survivorship of black bears in the Dachigam landscape. The Department of Wildlife Protection in Jammu and Kashmi...

The present study aimed to investigate the nutritional aspects of the bear diet quantitatively, in order to understand plant food selection in spring. Bears were observed directly from April to July in 2013 and 2014, to visually recognize plant species consumed by bears, and to describe the foraging period in the Ashio-Nikko Mountains, central Japan. Leaves were collected from eight dominant tr...

Carnivore-human encounters that result in human injury present a conservation and management challenge and it is therefore important to understand under what conditions such incidents occur. Females with cubs are often involved when humans are injured by brown bears Ursus arctos. In Scandinavia, this is particularly true for unarmed recreational forest users. Our aim was to document behavioural...

The hibernation phenomenon captures biological as well as clinical interests to understand how organs adapt. Here we studied how hibernating grizzly bears (Ursus arctos horribilis) tolerate extremely low heart rates without developing cardiac chamber dilation. We evaluated cardiac filling function in unanesthetized grizzly bears by echocardiography during the active and hibernating period. Beca...

Hailer et al. (1) sequenced 14 independent nuclear loci across the genomes of polar (Ursus maritimus), brown (U. arctos), and American black bears (U. americanus). The Bayesian multilocus coalescent approach showed one species tree in which polar bears split from brown bears before the diversification of brown bear lineages. The divergence of polar bears was estimated to have occurred 603 thous...