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In 1927, poisoning was outlawed while in 1939, certain denning sights were declared off limits. The killing of females and cubs was made illegal in 1965. Killing of polar bears decreased somewhat 25–30 years before the treaty. Despite this, the polar bear population continued to decline and by 1973, only around 1000 bears were left in Svalbard.
The polar bear population decline in the Western Hudson Bay has been linked to warming temperatures [Victoria Gill/BBC] There are 20 known sub-populations of polar bears across the Arctic. This is ...
As a result, the diet is less nutritional, which leads to reduced body size and reproduction, thus indicating population decline in polar bears. [92] The Arctic refuge is where polar bears main habitat is to den and the melting arctic sea ice is causing a loss of species. There are only about 900 bears in the Arctic refuge national conservation ...
This was only one episode in the long-term decline of the species. [1]: 2327 United States Geological Survey research suggests that the shrinkage of Arctic sea ice would eventually extirpate polar bears from Alaska, but leave some of their habitat in the Canadian Arctic Archipelago and areas off the northern Greenland coast. [93] [94]
The polar bear species is declining because of disappearing Arctic sea ice. In 2021, scientists in Norway found polar bears were inbreeding as the species fights to survive.
In the 1980s, polar bear biologist Andrew Derocher never saw weak, gaunt bear cubs sauntering along the shores of Canada's frigid Hudson Bay. Then, beginning around 2000, he sometimes spotted ...
One of the negative effects of climate change is the decline of polar bear populations. Taylor believes that "Polar bears, as a species, do not appear to be threatened or in decline based on the data that I’ve seen at the present time, although some populations do seem to be experiencing deleterious effects from climate change."
A polar bear A 2017 analysis found that the mountain goat populations of coastal Alaska would go extinct sometime between 2015 and 2085 in half of the considered scenarios of climate change. [ 66 ] Another analysis found that the Miombo Woodlands of South Africa are predicted to lose about 80% of their mammal species if the warming reached 4.5 ...