Sentences with phrase «survived periods of warming»

Polar bears are likely to have survived periods of warming before, but Axel Janke at the Biodiversity and Climate Research Centre in Frankfurt, Germany, points out that this time the warming is more rapid and is happening in tandem with human - driven habitat destruction, illegal hunting and pollution.

Not exact matches

«It is possible that Svalbard may have provided one such important refuge during warming periods, in which small polar bear populations survived and from which founder populations expanded during cooler periods,» argues biologist Charlotte Lundqvist of the University at Buffalo, The State University of New York, who is a co-author of the new study.

Their excellent night vision and apparent warm blood raise a question: Could they have survived icehouse conditions at the end of the Cretaceous period?

They suggest that the fragmentation of the brown bear genetic lines and subsequent hybridization with polar bears were caused by the onset of the Eemian (125 ka), last major warming period, and the «adaptive introgression» that resulted may have helped both polar and grizzly bears survive in their changing environments.

They have survived previous Arctic warming periods, including the last warm stretch between ice ages some 130,000 years ago, but some climate experts project that nothing in the species» history is likely to match the pace and extent of warming and ice retreats projected in this century and beyond, should emissions of heat - trapping gases continue unabated.

During the present Holocene man has already survived at least three periods of warming which by all indicators were warmer than present day trends.

The biggest part of the Greenland Ice Sheet actually survived the relatively warm [just 0.7 degrees Celsius warmer than the Holocene] period, it turns out.

If polar bears have been around for, say, half a million years this means that they've survived several ice ages, including all the sudden warming periods at the beginning of each interglacial, many of which will have been warmer than now.

By Barry Brown Canadian researchers studying the ArcticÂ's ancient permafrost have discovered 700,000 - year - old ice wedges buried in the soil that have survived earlier periods of global warming, adding complexity to predictions about the impact of contemporary climate change.

Most of the evidence is that species thrive in warmer weather, and polar bears have survived several inter-glaciation periods where the north pole melted entirely in the summer.

These bears have survived for thousands of years, during both colder and warmer periods, and their populations are by and large in good shape.

Polar bears for example survived just fine during the medieval warm period A couple of questions for you.