Results 91 to 100 of about 7,579 (247)
Predators and scavengers: Polar bears as marine carrion providers
Oikos, Volume 2026, Issue 1, January 2026.Scavenging is a foraging strategy widely used across the animal kingdom and apex predators provide a large amount of energy in a food web by provisioning carrion. In the harsh environmental conditions of the Arctic, apex predators such as polar bears Ursus maritimus can provide scavenging opportunities for many species. Carrion can act as a buffer when
Holly E. L. Gamblin +5 more
wiley +1 more source
Projected polar bear sea ice habitat in the Canadian Arctic Archipelago. [PDF]
PLoS ONE, 2014 Sea ice across the Arctic is declining and altering physical characteristics of marine ecosystems. Polar bears (Ursus maritimus) have been identified as vulnerable to changes in sea ice conditions.
Stephen G Hamilton +5 more
doaj +1 more source
Enhanced biological processes associated with alopecia in polar bears (Ursus maritimus) [PDF]
Science of The Total Environment, 2015 Populations of wildlife species worldwide experience incidents of mass morbidity and mortality. Primary or secondary drivers of these events may escape classical detection methods for identifying microbial insults, toxin exposure, or additional stressors.
Lizabeth, Bowen +4 more
openaire +2 more sources
Decrease in Effective Population Size After the Immigration of Asian Black Bears to Japan
Ecological Research, Volume 41, Issue 1, January 2026.The Asian black bear populations in Japan experienced three distinct periods of population decline in the past. The first decline began approximately between 800,000 and 300,000 years ago, the second occurred around 150,000 to 70,000 years ago, and the third took place roughly from 50,000 to 18,000 years ago.
Naoki Ohnishi +5 more
wiley +1 more source
Marine Mammal Science, Volume 42, Issue 1, January 2026.ABSTRACT Ringed seals (Pusa hispida) in Svalbard, Norway, are suspected to be declining due to a significant reduction in land‐fast sea ice, which serves as an essential breeding habitat, but were last surveyed in 2002. We address this data gap by conducting Uncrewed Aerial Systems (UAS) aerial surveys throughout Isfjorden (including adjacent small ...
Marc Rams i Rios +4 more
wiley +1 more source
Elbow Joint Geometry in Bears (Ursidae, Carnivora): a Tool to Infer Paleobiology and Functional Adaptations of Quaternary Fossils [PDF]
Bears are currently represented by eight species among Carnivora. Being all particularly large and generally plantigrade limits to certain extent their functional morphology so that inferences about their past diversification are difficult to achieve. We
Marques De Oliveira, A, Meloro, C
core +1 more source
Morphology and function of pinniped necks: The long and short of it
The Anatomical Record, Volume 308, Issue 12, Page 3175-3185, December 2025.Abstract Terrestrial vertebrates from at least 30 distinct lineages in both extinct and extant clades have returned to aquatic environments. With these transitions came numerous morphological adaptations to accommodate life in water. Relatively little attention has been paid to the cervical region when tracking this transition.
Justin Keller +3 more
wiley +1 more source
Portable Electric Fencing for Bear Deterrence and Conservation
Human-Wildlife Interactions, 2018 Although bear-inflicted (Ursus spp.) human fatalities are rare in North America, human injuries, property damage, and bear mortalities occur wherever bears and humans commingle.
Tom S. Smith +3 more
doaj +1 more source
Canadian polar bear population structure using genome‐wide markers
Ecology and Evolution, 2020 Predicting the consequences of environmental changes, including human‐mediated climate change on species, requires that we quantify range‐wide patterns of genetic diversity and identify the ecological, environmental, and historical factors that have ...
Evelyn L. Jensen +7 more
doaj +1 more source
Transient benefits of climate change for a high‐Arctic polar bear (Ursus maritimus) subpopulation [PDF]
, 2020 Kristin L. Laidre +9 more
openalex +1 more source