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Il y a 5 jours · polar bear, (Ursus maritimus), great white northern bear (family Ursidae) found throughout the Arctic region. The polar bear travels long distances over vast desolate expanses, generally on drifting oceanic ice floes, searching for seals, its primary prey.
- Ringed Seal
ringed seal, (Pusa, or Phoca, hispida), nonmigratory,...
- Ringed Seal
Il y a 3 jours · In Canada, melting sea ice is forcing polar bears closer and closer to human populations, so scientists there are working on a program to track polar bears, tag them with GPS units and...
16 juil. 2024 · At the end of the Canadian Arctic summer, polar bears head inland to wait for the ice to form. And while thousands of tourists flock to catch a glimpse of these magnificent predators,...
29 juin 2024 · Over the last few decades, scientific predictions and models have increasingly warned of the possibility of polar bear extinction if current climate change trends continue. This article examines the techniques behind these projections and the conclusions and ramifications for polar bear populations.
Il y a 4 jours · The polar bear ( Ursus maritimus) is a large bear native to the Arctic and nearby areas. It is closely related to the brown bear, and the two species can interbreed. The polar bear is the largest extant species of bear and land carnivore, with adult males weighing 300–800 kg (660–1,760 lb).
5 juil. 2024 · The polar bear has become the indicator of the health of an entire ecosystem, says a geographer, biologist who since his first expedition to the Arctic in 1973 has been raising awareness about...
19 juil. 2024 · New tracking technology and a study led by York University in Toronto help scientists gather critical information about polar bear behaviour and mitigate human-bear interactions.
