Sentences with phrase «bear subpopulations»

In the other scenarios, the researchers used the existing, albeit scarce, data on how polar bear abundance has changed with respect to sea ice loss, using all available data from polar bear subpopulations in the four existing polar bear eco-regions, and projected forward these observed trends.

«We have used the same metric across all of the polar bear subpopulations in the Arctic so we can compare and contrast, for example, the Hudson Bay region with the Baffin Bay region using the same metric.»

The paper, to appear Sept. 14 in The Cryosphere, is the first to quantify the sea ice changes in each polar bear subpopulation across the entire Arctic region using metrics that are specifically relevant to polar bear biology.

The Barents Sea polar bear subpopulation boundaries, courtesy the IUCN Polar Bear Specialist Group.

2 New Papers: 92 % Of Polar Bear Subpopulations Stable, Increasing... Inuit Observe «Too Many Polar Bears Now»

Currently, the status of polar bear subpopulations is variable; in some areas of the Arctic, polar bear numbers are likely declining, but in others, they appear to be stable or possibly growing.

In 2009, the Polar Bear Specialist Group of the International Union for Conservation of Nature reported that eight polar bear subpopulations are declining, three are stable and one is increasing.

In recent decades 92 % of Canadian polar bear subpopulations have remained stable or increased, leading scientists to conclude that «it seems unlikely that polar bears (as a species) are at risk from anthropogenic global warming» (York et al., 2016).

The Davis Strait polar bear subpopulation is said to be «vulnerable» to the supposed effects of global warming because, like Hudson Bay, Davis Strait sea ice retreats every summer, leaving polar bears on land for several months.

Estimating the Barents Sea polar bear subpopulation.

What's also clear, however, is that the loss of sea ice is partly to blame for declines in at least four polar bear subpopulations.

Of the 19 recognized polar bear subpopulations, scientists only have enough data to make accurate determinations about 12.