Results 21 to 30 of about 446,324 (293)
BMC Genomics, 2020 Background Polar bears are uniquely adapted to an Arctic existence. Since their relatively recent divergence from their closest living relative, brown bears, less than 500,000 years ago, the species has evolved an array of novel traits suited to its ...
Jose Alfredo Samaniego Castruita +2 more
doaj +1 more source
The bear circadian clock doesn’t ‘sleep’ during winter dormancy [PDF]
, 2016 Most biological functions are synchronized to the environmental light:dark cycle via a circadian timekeeping system. Bears exhibit shallow torpor combined with metabolic suppression during winter dormancy. We sought to confirm that free-running circadian
Brown, Steven +9 more
core +3 more sources
Den site selection by male brown bears at the population's expansion front. [PDF]
PLoS ONE, 2018 Brown bears (Ursus arctos) spend about half of the year in winter dens. In order to preserve energy, bears may select denning locations that minimize temperature loss and human disturbance.
Ane Eriksen +3 more
doaj +1 more source
Brown Bear (Ursus arctos; Eurasia) [PDF]
, 2020 I consider the mountainside a special place, a place with power, as I do certain other valleys and basins ... where grizzlies still roam. I return to these places year after year, to keep track of the bears and to log my life. The bears provided a calendar for me when I got back from Vietnam, ...
Swenson J. E. +33 more
openaire +3 more sources
Platelet function in brown bear (Ursus arctos) compared to man
Thrombosis Journal, 2010 Background Information on hemostasis and platelet function in brown bear (Ursus arctos) is of importance for understanding the physiological, protective changes during hibernation. Objective The study objective was to document platelet activity values in
Särndahl Eva +7 more
doaj +1 more source
Survival and divergence in a small group: The extraordinary genomic history of the endangered Apennine brown bear stragglers [PDF]
, 2017 About 100 km east of Rome, in the central Apennine Mountains, a critically endangered population of ∼50 brown bears live in complete isolation. Mating outside this population is prevented by several 100 km of bear-free territories.
Benazzo, Andrea +26 more
core +4 more sources
Brown Bear, Brown Bear, What Do You See? [PDF]
Early Years Educator, 2004 Join Brown Bear, Red Bird and lots of other animals to discover a world of rhythm, rhyme and colour in one of Eric Carle's best loved picture books. By Hilary White.
openaire +1 more source
Cryopreservation of Brown Bear Skin Biopsies [PDF]
Cell Preservation Technology, 2008 Genetic resource banks and assisted reproductive technologies support the conservation of endangered or threatened species. In this study we assessed two procedures to cryopreserve skin biopsies from live brown bears. Skin biopsies were taken from six live, anesthetized brown bears.
Caamaño, J.N. (José) +5 more
openaire +4 more sources
The primacy of bears as seed dispersers in salmon‐bearing ecosystems
Ecosphere, 2018 Salmon–bear ecosystems that historically existed throughout most of the northern temperate and boreal regions of planet earth now persist only in the North Pacific.
Laurie E. F. Harrer, Taal Levi
doaj +1 more source
Diet of the brown bear in Himalaya: Combining classical and molecular genetic techniques.
PLoS ONE, 2019 The ecological requirements of brown bears are poorly known in the Himalaya region, which complicates conservation efforts. We documented the diet of the Himalayan brown bear (Ursus arctos isabellinus) by combining classical scat analysis and a newly ...
Muhammad Ali Nawaz +5 more
doaj +1 more source