Barents Sea polar bears (Ursus maritimus): population biology and anthropogenic threats
Polar Research, 2016 This paper examines how anthropogenic threats, such as disturbance, pollution and climate change, are linked to polar bear (Ursus maritimus) population biology in the Svalbard and Barents Sea area, with the aim to increase our understanding of how human ...
Magnus Andersen, Jon Aars
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Anti-NMDA Receptor Encephalitis in the Polar Bear (Ursus maritimus) Knut. [PDF]
Sci Rep, 2015 AbstractKnut the polar bear of the Berlin Zoological Garden drowned in 2011 following seizures and was diagnosed as having suffered encephalitis of unknown etiology after exhaustive pathogen screening. Using the diagnostic criteria applied to human patients, we demonstrate that Knut’s encephalitis is almost identical to anti-NMDA receptor encephalitis ...
Prüss H +5 more
europepmc +5 more sources
Sex-selective harvesting of polar bears Ursus maritimus
Wildlife Biology, 2008 Abstract We explored limits and consequences of male-biased harvesting of polar bears Ursus maritimus using a simulated population based on empirically-derived estimates of age-specific rates of survival and reproduction. The maximum sustainable yield (MSY) was identified as the total kill in which the number of females that could be taken resulted in ≤
Philip D McLoughlin, François Messier
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Polar bears and expanding sea ice in the Mid Holocene Aleutian Islands, Alaska [PDF]
Scientific ReportsThe archaeological record offers the opportunity to infer the effects of regional climatic shifts on species distributions and human-animal interactions.
Lillian Draper Parker +7 more
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Temporal dynamics of polar bear (<i>Ursus maritimus</i>) pregnancy rates in western Hudson Bay: influence of mass, age and timing of first breeding. [PDF]
Conserv PhysiolMcGeachy D +3 more
europepmc +2 more sources
Faecal glucocorticoid metabolites as a measure of adrenocortical activity in polar bears (Ursus maritimus). [PDF]
Conserv Physiol, 2020 Hein A +7 more
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Members of the family Ursidae in the Museum of Nature of Kharkiv University and their craniological features [PDF]
Theriologia Ukrainica, 2019 The exhibition and scientific collection of the Museum of Nature currently deposit 16 specimens of the family Ursidae (bears), which belong to three species and 6 subspecies.
Yuriy Iliukhin
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Dietary ecology of the extinct cave bear: Evidence of omnivory as inferred from dental microwear textures [PDF]
Acta Palaeontologica Polonica, 2016 The diet of the extinct European cave bear, Ursus spelaeus, has widely been debated. Diverging from the extant brown bear (Ursus arctos) approximately 1.2 million years ago, the cave bear is one of the most ubiquitous fossil bears occurring in Europe ...
D. Brent Jones, Larisa R.G. DeSantis
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Polar Research, 2022 Sea-ice distribution and duration are declining across the circumpolar range of the polar bear (Ursus maritimus), resulting in a reduced access to ice-obligate seals, its primary prey.
Martyn E. Obbard +4 more
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A real-time PCR assay to accurately quantify polar bear DNA in fecal extracts [PDF]
PeerJ, 2020 DNA extracted from fecal samples contains DNA from the focal species, food, bacteria and pathogens. Most DNA quantification methods measure total DNA and cannot differentiate among sources.
Kristen M. Hayward +5 more
doaj +2 more sources