Sentences with phrase «one's sea ice habitat»

Because polar bears are entirely dependent upon the sea ice for their survival, any observed and projected reductions in preferred sea ice habitats can only result in declines.

Because global climate models predict critical sea ice habitat will disappear as CO2 concentrations rise, they argue the seals are ultimately endangered.

The most significant threats to arctic marine mammals comprise loss of sea ice habitat and its associated highly productive food web along with the increase in anthropogenic activities at high latitudes (Ragen et al. 2008).

That corresponds to a roughly 3 1/2 week shift at either end — and seven weeks of total loss of good sea ice habitat for polar bears — over the 35 years of Arctic sea ice data.

Comments Off on Polar bears move around as sea ice habitat changes — this is what resilience looks like

Polar species, including the polar bear, ice - dependent seals, and emperor penguins are especially vulnerable to the effects of climate change as their unique sea ice habitats shrink due to warming.

Polar species, including the polar bear, ice - dependent seals, and emperor penguins are especially vulnerable to the effects of climate change as their unique sea ice habitats shrink due to warming.

Polar bears move around as sea ice habitat changes — this is what resilience looks like Posted April 14, 2014

For her thesis, Maria studied minke whale occurrence in relation to sea ice habitat structure throughout the Antarctic sea - ice zone.

Franz Josef Land provides the most stable sea ice habitat for Barents Sea polar bears because it is largely beyond the influence of warm water influxes from the North Atlantic.

They are also uncertain how soon the summer sea ice habitat where the ringed seal lives will disappear.

Polar bear (Ursus maritimus) diet may become more variable in some Arctic regions due to climate warming and altered sea ice habitat.

Sea ice habitat for polar bears has not become progressively worse each year during their season of critical feeding and mating, as some scaremongers often imply.

The Interior Department lists the polar bear as a «threatened» species — one at risk of becoming endangered — due to dangerous declines in their sea ice habitat

After all, the bear faces the impacts of human pollution, hunting and increased activity in the Arctic, such as shipping and oil drilling as well as the changes in its sea ice habitat.

Interior Secretary Dirk Kempthorne, however, made clear several times during a press conference announcing the department's decision that, despite his acknowledgement that the polar bear's sea ice habitat is melting due to global warming, the ESA will not be used as a tool for trying to regulate the greenhouse gas emissions blamed for creating climate change.

The U.S. Department of the Interior Wednesday listed the polar bear as a threatened species under the Endangered Species Act (ESA) of 1973 based on evidence that the animal's sea ice habitat is shrinking and is likely to continue to do so over the next several decades.

In response, the U.S. Geological Survey began a study on changing Arctic ecosystems to better understand the consequences of lost permafrost and sea ice habitats, and the Interior Department established a Climate Science Center at the University of Alaska to specifically address Arctic issues.

The decision was based on evidence that sea ice is vital for polar bear survival, that this sea ice habitat has been reduced, and that this process is likely to continue; if something is not done to change this situation, the polar bear will be extinct within 45 years, Kempthorne said.

Amstrup adds, «It fills a gap in our otherwise extensive knowledge of polar bear ecology and corroborates previous findings that the key to polar bear conservation is arresting the decline of their sea ice habitat.»

These magnificent animals are facing unprecedented threats as a warming climate and loss of their sea ice habitat make it more difficult for the bears to hunt prey like seals and find dens for their cubs.

Ultimately, a continually warming world will have no sea ice habitat for polar bears, and that is the rub they face.

Shaye Wolf, climate science director for the Center for Biological Diversity, the conservation group that launched legal action to get Pacific walruses listed in 2008, told Earther that the agency's claim that walruses will adapt to climate change «is baseless, and simply doesn't match the science showing that walruses are being harmed by the devastating loss of their sea ice habitat.»

Tagged Arctic basin, genetic bottleneck, ice age, last glacial maximum, LGM, perennial ice, Pleistocene, polar bear, population bottleneck, population decline, ringed seal, sea ice, sea ice habitat, sea level, seasonal ice

Tagged Barber and Iacozza, bearded seal, beluga whales, Gulf of Boothia, local Inuit knowledge, M'Clintock Channel, multiyear ice, narwhal, polar bear population density, ringed seal, sea ice habitat, Thiemann

Tagged AMO, Atlantic Multidecadal Oscillation, Atlantic Multidecadal Variability, Barents Sea, Greenland Sea, Jon Aars, Magnus Andersen, Miles, natural variation, Norwegian Polar Institute, NSIDC, sea ice extent, sea ice habitat

Comments Off on Polar bears barely survived the sea ice habitat changes of the last Ice Age, evidence suggests

Nonetheless, Overland used a select group of 6 IPCC models to convince the courts rising CO2 concentrations threatened to destroy and modify the seals» sea ice habitat.

Further, they are a potential competitor as polar bears displaced from their sea ice habitats increasingly use the same land habitats as grizzly bears.

But changes to their sea ice habitat are already being seen as a result of climate change.»

The principal cause of this decline is climatic warming and its consequent negative affects on the sea ice habitat of polar bears.

Polar bears are threatened with extinction because their sea ice habitat is melting away due to global warming.