Anthropogenic Neighborhood Impact on Bacterial and Fungal Communities in Polar Bear Feces [PDF]
Animals, 2023 Climate changes cause a dramatical increase in the ice-free season in the Arctic, forcing polar bears ashore, closer to human settlements associated with new and non-natural food objects.
Tatiana Kuznetsova +2 more
exaly +4 more sources
Wildlife Letters, 2023 This review explores whether recent hybridization events between polar bears (Ursus maritimus) and grizzly bears (Ursus arctos horribilis) will eventually contribute to the extinction of the modern polar bear.
Craig L. Shafer
doaj +2 more sources
Efficacy of bear spray as a deterrent against polar bears
Wildlife Society Bulletin, 2023 Although there have been few attempts to systematically analyze information on the use of deterrents on polar bears (Ursus maritimus), understanding their effectiveness in mitigating human‐polar bear conflicts is critical to ensuring both human safety ...
James M. Wilder +5 more
exaly +2 more sources
Processing references in context: when the polar bear does not meet a polar bear. [PDF]
Cogn Process, 2023 AbstractDiscourse understanding is hampered when missing or conflicting context information is given. In four experiments, we investigated what happens (a) when the definite determiner “the,” which presupposes existence and uniqueness, does not find a unique referent in the context or (b) when the appropriate use of the indefinite determiner is ...
Rolke B +4 more
europepmc +3 more sources
Novel Divergent Polar Bear-Associated Mastadenovirus Recovered from a Deceased Juvenile Polar Bear [PDF]
mSphere, 2018 Polar bears in captivity can be exposed to opportunistic pathogens not present in their natural environments. A 4-month-old polar bear (Ursus maritimus) living in an isolated enclosure with his mother in the Tierpark Berlin, Berlin, Germany, was ...
Anisha Dayaram +8 more
doaj +2 more sources
Polar bear attacks on humans: Implications of a changing climate
Wildlife Society Bulletin, 2017 Understanding causes of polar bear (Ursus maritimus) attacks on humans is critical to ensuring both human safety and polar bear conservation. Although considerable attention has been focused on understanding black (U. americanus) and grizzly (U.
Dag Vongraven, Todd Atwood
exaly +2 more sources
Intelligent Nanomaterials for Solar Energy Harvesting: From Polar Bear Hairs to Unsmooth Nanofiber Fabrication [PDF]
Frontiers in Bioengineering and Biotechnology, 2022 Polar bears can live in an extremely cold environment due to their hairs which possess some remarkable properties. The hollow structure of the hair enables the bear to absorb energy from water, and the white and transparent hairs possess amazing optical ...
Qingli Wang +3 more
doaj +2 more sources
Estimating Polar Bear (Ursus maritimus) Age Based on an Epigenetic DNA Methylation Clock [PDF]
Ecology and EvolutionKnowledge of animal age is essential to wildlife managers for obtaining meaningful and accurate insights into demographic parameters. A common approach to aging wildlife, including bears (Ursus spp.), has been extracting a tooth during physical capture ...
Susannah P. Woodruff +4 more
doaj +2 more sources
Efficacy of aerial forward-looking infrared surveys for detecting polar bear maternal dens. [PDF]
PLoS ONE, 2020 Denned polar bears (Ursus maritimus) are invisible under the snow, therefore winter-time petroleum exploration and development activities in northern Alaska have potential to disturb maternal polar bears and their cubs.
Tom S Smith +3 more
doaj +2 more sources
Screening for the ancient polar bear mitochondrial genome reveals low integration of mitochondrial pseudogenes (numts) in bears [PDF]
Mitochondrial DNA. Part B. Resources, 2017 Phylogenetic analyses of nuclear and mitochondrial genomes indicate that polar bears captured the brown bear mitochondrial genome 160,000 years ago, leading to an extinction of the original polar bear mitochondrial genome.
Fritjof Lammers +4 more
doaj +2 more sources