Sentences with phrase «polar bear populations rose»

Simulations of how the DNA changed over time suggest that polar bear populations rose and fell with the temperature.

Not exact matches

The likelihood of serious sea level rise under «business as usual», and impacts on water resources may not have the acute drama associated with polar bear population decline or the possibility of massive methane clathrate releases, but they are much more likely to figure on policy makers agendas — just as other long term chronic issues (such as pensions) do.

There is rising concern among polar bear biologists that the big recent summertime retreats of sea ice in the Arctic are already harming some populations of these seal - hunting predators.

Also, international cooperation on management of polar bear populations is on the rise, and reflected in the 2011 polar bear treaty involving native groups and governments in Russia and the United States.

«Their [polar bears»] populations have risen in recent decades because of hunting controls.

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.

(on polar bear populations and sea level rise)

Which experts on sea level rise, ice sheet dynamics, and polar bear biology / ecology did you contact for your articles on polar bear populations and sea level rise?

He also claimed that the polar bear population is rising rather than falling.

There is a widespread idea that there are actual and robust measurements of polar bear populations, the extent of glaciers, the rate of sea - level rise, and the extent of polar sea ice.

But, their own data on polar bear populations contradict claims that rising air temperatures are causing a decline in polar bear populations.