Results 81 to 90 of about 7,621 (257)
Polar bearUrsus maritimushearing measured with auditory evoked potentials [PDF]
Journal of Experimental Biology, 2007 While there has been recent concern about the effects of sound on marine mammals, including polar bears, there are no data available measuring the hearing of any bear. The in-air hearing of three polar bears was measured using evoked auditory potentials obtained while tone pips were played to three individually anaesthetized bears at the Kolmården ...
Paul E, Nachtigall +7 more
openaire +2 more sources
Top‐Down and Bottom‐Up Processes Jointly Explain Mesopredator Movement and Foraging Ecology
Ecology Letters, Volume 29, Issue 3, March 2026.This study integrates top‐down (polar bear habitat selection) and bottom‐up (fish distribution) processes to test how mesopredators (ringed seals) balance risk–reward tradeoffs in habitat selection. Ringed seals reduced their space use and foraging time in response to predation risk, yet accepted higher risk when prey diversity was elevated ...
Katie R. N. Florko +7 more
wiley +1 more source
First recorded ice entrapment of a beluga whale (Delphinapterus leucas) in east Greenland
Polar ResearchBeluga whales are rare along the coast of east Greenland and the closest recognized stock occurs around Svalbard. Here we report on an ice entrapment of an adult beluga whale (Delphinapterus leucas) in north-east Greenland.
Kristin L. Laidre +4 more
doaj +1 more source
Avian influenza overview December 2025–February 2026
EFSA Journal, Volume 24, Issue 3, March 2026.Abstract Between 29 November 2025 and 27 February 2026, 2514 highly pathogenic avian influenza (HPAI) A(H5) virus detections were reported in domestic (406) and wild (2108) birds in 32 countries in Europe. Albeit still at high levels after the peak was reached at the beginning of the current reporting period, the weekly number of detections has since ...
European Food Safety Authority (EFSA) +16 more
wiley +1 more source
Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 36, Issue 2, February 2026.ABSTRACT Cetaceans are indicators of ocean health, influence marine ecosystem dynamics and hold socio‐economic importance for coastal whaling communities. Yet whale–whaler relationships remain poorly understood and are increasingly compromised under the triple planetary crisis of climate change, biodiversity loss and pollution. Here, we briefly outline
Melissa A. McKinney, Jeremy J. Kiszka
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
Climate‐linked evolution and genetics in a warming Arctic
Ecological Monographs, Volume 96, Issue 1, February 2026.Abstract Knowledge of evolutionary patterns and genetic variation across a species' range is important for determining conservation and management strategies. The Arctic is the fastest‐warming ecosystem on Earth and has already reached temperature increases not expected in the rest of the world until the end of the century.
L. Ruth Rivkin +12 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
Validation of grizzly bear hair hormone profiles as a tool to monitor population demographics
The Journal of Wildlife Management, Volume 90, Issue 2, February 2026.We measured 16 steroid and thyroid hormone concentrations in grizzly bear hair to predict sex, age class, and reproductive status. Models were highly accurate when predicting sex and age class and showed promise for assessing reproductive status. Results illustrate the potential for hair hormone profiles as non‐invasive population monitoring tools ...
Abbey E. Wilson +10 more
wiley +1 more source