Polar Bears Cracking Under The Strain

"Eight of the 13 Canadian polar bear sub-populations are either depleted or showing significant signs of stress, and future reduction of sea-ice in the Arctic could result in a loss of two-thirds of the world's polar bears within 50 years.

Roughly 15,000 (two-thirds) of the world’s 20-25,000 polar bears live in Canada and face four main threats: climate change, which is reducing their sea-ice habitat; over-hunting; increasing industrialisation of critical habitats; and toxic chemicals in the Arctic food chain.

Of the eight sub-populations showing clear signs of ecological problems, five have declining numbers (western Hudson Bay, Baffin Bay, Kane Basin, Norwegian Bay, and southern Beaufort Sea), and a sixth (southern Hudson Bay) is showing clear biological signs of stress.

Two sub-populations in the central Arctic are increasing (McClintock Channel and Viscount Melville Sound) due to the cessation of past over-hunting, but are still below historic levels.

“The facts are very clear, both from scientific research and from local knowledge, that climate change is occurring rapidly in the Arctic and is causing major problems for wildlife, and for northern peoples,” said Dr. Peter Ewins, Director, Species Conservation, WWF-Canada."

ORIGINAL SOURCE: Environmental News Network