Polar bears adapted to the Arctic just 70,000 years ago
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SpringerLink
Late Pleistocene polar bear genomes reveal the timing of allele fixation in key genes associated with Arctic adaptation
BMC Genomics - The polar bear (Ursus maritimus) occupies a relatively narrow ecological niche, with many traits adapted for cold temperatures, movement across snow, ice and open water, and for...
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Paws of polar bears sustaining ice-related injuries in a warming Arctic | Researchers found lacerations, hair loss, ice buildup and skin ulcerations primarily affecting the feet of adult bears as well as other parts of the body.
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University of Washington
Paws of polar bears sustaining ice-related injuries in a warming Arctic
Polar bears in some parts of the high Arctic are developing ice buildup and related injuries to their feet. The changes appear to be an unexpected consequence of climate change, related to changing...
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Polar Bear Population Decline Due to "Lack of Food" | Sea ice loss is starving polar bears in Western Hudson Bay, reducing their size, cub survival and overall population.
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#PolarBears #ClimateChange #WildlifeConservation #SeaIceLoss #BiodiversityLoss
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Technology Networks
Polar Bear Population Decline Due to "Lack of Food"
A new study confirms that polar bear decline in Western Hudson Bay is directly linked to shrinking sea ice, which shortens hunting seasons and leads to starvation. Declining body mass and cub survival rates threaten long-term population stability.
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Polar bears provide millions of kilograms of food for other Arctic species 🐻❄️🍖 | The apex predators typically leave about 30 percent of edible animal remains behind, which other scavengers wouldn't otherwise be able to access. 🥩🌨️
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#PolarBears #ArcticEcosystem #ApexPredators #WildlifeConservation #ScavengerSupport
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Science News
Polar bears provide millions of kilograms of food for other Arctic species
A new study shows how much food polar bears leave behind — and how their decline threatens scavengers across the Arctic.
Polar bears are rewiring their own genetics to survive a warming climate 🐻❄️🌍❄️
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NBC News
Polar bears are rewiring their own genetics to survive a warming climate
Researchers say the findings, the first documented case of rising temperatures driving genetic change in a mammal, offer a "glimmer of hope" for the Arctic species, which is facing possible extinction this century.
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Due to warming temperatures 🌡️ more than two-thirds of polar bears 🐻❄️ are expected to be extinct by 2050 with total extinction predicted by end of this century. New study found that the changing climate 🌍 was driving changes in the polar bear genome, suggesting they may potentially survive.
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The Conversation
Polar bears are adapting to climate change at a genetic level – and it could help them avoid extinction
Polar bears are expected to become extinct but there are some signs their DNA is changing and they are adapting to new temperatures.
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Arctic pollution may be altering key fat-derived signalling molecules in polar bears 🐻❄️, with higher contaminant loads associated with increased inflammation ⚠️ and liver stress 🏥, highlighting potential long-term health impacts in a rapidly changing ecosystem 🌍.
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Polar bears 🐻❄️ on Norwegian islands 🏝️ fatter 🍖 and healthier 💪 despite ice loss ❄️, scientists say 🧪.
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#PolarBears #NorwegianIslands #IceLoss #ArcticHealth #ScienceNews
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Bbc
Polar bears getting "fatter and healthier" amid ice loss
Scientists think that Svalbard bears have adapted to recent ice loss by eating more land-based prey.
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Science News
Polar bears 🐻❄️ on Norwegian islands 🏝️ fatter 🍖 and healthier 💪 despite ice loss ❄️, scientists say 🧪. Read Full Article #PolarBears #NorwegianIslands #IceLoss #ArcticHealth #ScienceNews
🐻 Polar bears in Svalbard, Norway, have become fatter and healthier since the early 1990s, despite significant sea ice loss. Researchers weighed 770 adults between 1992 and 2019, finding improved body condition.
🦌 Scientists suggest bears are adapting by consuming more land-based prey like reindeer and walruses, whose populations have increased partly due to conservation efforts.
🧊 Despite this short-term positive trend, experts warn that continued sea ice decline will eventually lead to bears needing to travel further, depleting energy and fat reserves. Other research shows ice loss negatively impacts cub and older female survival.
#PolarBears #Arctic #ClimateChange
🦌 Scientists suggest bears are adapting by consuming more land-based prey like reindeer and walruses, whose populations have increased partly due to conservation efforts.
🧊 Despite this short-term positive trend, experts warn that continued sea ice decline will eventually lead to bears needing to travel further, depleting energy and fat reserves. Other research shows ice loss negatively impacts cub and older female survival.
#PolarBears #Arctic #ClimateChange
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