Sentences with phrase «on polar bear number»

[3] Clearly, any warming that has occurred has not had an adverse impact on polar bear numbers.

AM: I have actually read that study on the polar bear numbers.

Not exact matches

Wallach and colleagues gathered research on the life cycles of more than a hundred species of mammalian carnivores — from polar bears and panthers to skunks and stoats — and documented examples of large predators that apparently regulate their own numbers.

The researchers found that between 1985 and 1994, 62 % of polar bear dens were built on sea ice — but that number dropped to 37 % between 1998 and 2004.

Stirling's team found that around the town of Churchill on the shores of Hudson Bay — the «polar bear capital of the world» — the number of bears reported as attacking humans, homes and hunting camps more than tripled between 1970...

For all visitors, Svalbard is full of quirky surprises, another being that polar - bears out - number people, and although I didn't see one on my trip, I really didn't care.

An increasing number of polar bears are encroaching on local communities and lengthening their stays because of melting sea ice.

Under the new plan, native people living in Alaska will now adjust the number of polar bears they hunt depending on the rise and fall of the animal's population.

Comments Off on IUCN Specialist Group now rejects polar bear numbers it used for 2015 IUCN Red List review

The recent listing of polar bears as «endangered» was based on junk science and GIGO computer models that claim manmade global warming will send the bears» record population numbers into oblivion.

Overall, and based on actual population studies, there is good evidence that polar bear numbers have increased, as Lawson said.

Polar bears are one of the most sensitive Arctic marine mammals to climate warming because they spend most of their lives on sea ice.35 Declining sea ice in northern Alaska is associated with smaller bears, probably because of less successful hunting of seals, which are themselves ice - dependent and so are projected to decline with diminishing ice and snow cover.36, 37,38,39 Although bears can give birth to cubs on sea ice, increasing numbers of female bears now come ashore in Alaska in the summer and fall40 and den on land.41 In Hudson Bay, Canada, the most studied population in the Arctic, sea ice is now absent for three weeks longer than just a few decades ago, resulting in less body fat, reduced survival of both the youngest and oldest bears, 42 and a population now estimated to be in decline43 and projected to be in jeopardy.44 Similar polar bear population declines are projected for the Beaufort Sea region.45