Sentences with phrase «because polar bears»

Because polar bears depend on a habitat that literally melts as temperatures rise, these animals are iconic symbols of the negative effects of AGW.»

Because polar bears are vulnerable to this loss of habitat, they are, in my judgment, likely to become endangered in the foreseeable future — in this case 45 years....

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 polar bears have been spending more time off the ice in recent years, they appear to have begun to interbreed with adjacent brown bear populations, and some of these hybrids are into their second generations.

That paper, which was not peer - reviewed, argued that because polar bear numbers have remained relatively stable despite faster - than - expected sea ice loss over the past decade, scientists» predictions of future population declines are flawed.

It has, they haven't because the polar bear biology was wrong is an example of the type of attack I think most effective.

Not exact matches

John Kuhns dad was a polar bear and his mom was the corpse of a dead seal which makes sense because when it get's cold out side he likes to show off his bear arms.

It had been a different story at RAS's zoological museum a few days earlier, where she wasn't allowed to sample the bones she had come for because they were already covered with drill marks from other researchers who, like her, hoped to mine the relatively small number of ancient polar bear samples to reveal their evolutionary history.

«Now that we have a better understanding of polar bear energy expenditures during summer because of this study, we are analyzing additional data we collected which relates to their energy storage,» Whiteman said.

Because their data consistently showed that black, brown and polar bears carry highly distinct Y chromosome lineages, the researchers also estimated the timing of the split between the male lineages of brown and polar bears.

For example, the polar bear specimen from roughly 120,000 years ago survived in Svalbard during a warm interglacial period because that Arctic archipelago remained more frozen than other areas.

An international «Red List» of threatened species says that the polar bear is vulnerable to extinction because of a projected decline in its habitat linked to climate change that is melting sea ice in the Arctic.

«When we look forward several decades, climate models predict such profound loss of Arctic sea ice that there's little doubt this will negatively affect polar bears throughout much of their range, because of their critical dependence on sea ice,» said Kristin Laidre, a researcher at the University of Washington's Polar Science Center in Seattle and co-author of a study on projections of the global polar bear population.

(The agency listed the polar bear and wolverine last year because of climate - change related concerns.)

«For example, in some parts of the Arctic, such as the Chukchi Sea, polar bears appear healthy, fat and reproducing well — this may be because this area is very ecologically productive, so you can lose some ice before seeing negative effects on bears.

I have nothing against polar bears, but I really wanted us to be talking about people because that's who's going to suffer,» Browning said in an interview.

The only scientific study that either side before me can find is one which indicates that four polar bears have recently been found drowned because of a storm.

«I can't imagine having to tell her when she's grown up that the polar bears became extinct,» he said, «because we didn't act soon enough to combat a problem that we knew was real but that we couldn't convince the public of.»

Little remained of the house, whether because of tourists, polar bears or weathering.

Because Kaktovik's polar bears seem especially susceptible to the Arctic's shrinking sea ice, researchers are concerned they may start relying more heavily on nutrient - poor food from land.

The scientists said drilling on the coastal plain would be particularly harmful because it contains a «unique compression» of habitats supporting animals like polar bears, grizzly bears, wolverines, representing «the greatest wildlife diversity of any protected area above the Arctic Circle.»

Although it will not help Knut any more, or other bears in the past, because of the new knowledge on pathogens in polar bears the zoos can now begin to develop management strategies to minimize their occurrence,» commented Professor Heribert Hofer, head of the IZW.

«The polar bear was the first species protected under the Endangered Species Act solely because of threats from global warming,» said Shaye Wolf, climate science director for the Center for Biological Diversity, an environmental group.

Because they depend on sea ice to hunt seals, the polar bear is considered threatened as global warming melts and thins ice in this region.

The reason that many environmentalists fight to save the Arctic National Wildlife Refuge or the polar bears is not because they are sure that losing those things would cause the universe to become unhinged, but because they realize that humanity isn't smart enough to know which things are linchpins for the entire ecosystem and which are not.

This is misleading, because vitamin A toxicity is mainly caused by synthetic sources, or by eating something ridiculous like the liver of a polar bear.

However, most Academy voters are just like you and me, and they'll choose the film because silly - looking pirates and talking polar bears don't stand a chance against giant f ****** robots!

One of my foster moms calls me «Little Bear» because she says I look like a polar bear Bear» because she says I look like a polar bear bear cub.

* The polar bear was indigenous to as far south as Minnesota upon settlement but called the yellow bear because it retained its summer coat longer, but still the same bear.

It is pushing for new oil and gas drilling in polar bear habitat while biologists for Interior Department, prodded by legal action, recommended the bear be given threatened status under the species act because of the warming of the Arctic and summer retreat of sea ice.

It turned out that Mr Gore had misread the study: in fact four polar bears drowned and this was because of a particularly violent storm.

«The Interior Department declared the polar bear a threatened species Wednesday, saying it must be protected because of the decline in Arctic sea ice from global warming.»

Mitchell Taylor, a Canadian expert on polar bears who was in the specialists» group for many years, told some reporters that he was excluded this year because he disputes that the bears are in danger and that human - caused global warming poses a substantial threat to them.

The Planet Earth series by the Discovery Channel has video of a polar bear dying because of the melted ice sheets.

In summary, polar bear numbers probably increased in some areas during the 1970s and 1980s, and perhaps even into the 1990s, because of greater protection from direct human mortalities.

Environmental groups cheered a Federal Court ruling today that forces the Bush administration to decide by mid-May whether polar bears deserve protection under the Endangered Species Act because of Arctic impacts from the warming climate.

We've been assured by a certain stripe of denialist that the polar bears will be just fine under warming because «they will adapt.»

The Inuit hunters will be happiest of all because there will be more seals and polar bears.

There is some pretty gruesome video (warning to parents) of the polar bear's death, which Icelandic officials said was necessary because no one had the appropriate tranquilizer (a local veterinarian disputes that):

Environmental groups have sought to force the federal government to restrict carbon dioxide emissions using the Clean Air Act, the Endangered Species Act (because of threats to polar bears from global warming) and other federal laws, and now they are poised to add the Clean Water Act to the list.

Three years after environmental groups sued to force the Interior Department to consider protecting polar bears under the Endangered Species Act, the Bush administration today listed the species as threatened — on track to be endangered by midcentury because of shrinking summer sea ice in a warming Arctic.

Researchers Flee Stranded Bear - Scientists from the Wildlife Conservation Society had their field research on ecological impacts of eroding Arctic coasts near Prudhoe Bay interrupted by a polar bear that was stuck ashore because the sea ice in that part of Alaska was far offshBear - Scientists from the Wildlife Conservation Society had their field research on ecological impacts of eroding Arctic coasts near Prudhoe Bay interrupted by a polar bear that was stuck ashore because the sea ice in that part of Alaska was far offshbear that was stuck ashore because the sea ice in that part of Alaska was far offshore.

I think that polar bear will extinct soon not untill the end of this centory because our human being.

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

Polar bears are being driven from their usual habitats on the disappearing polar ice at the same time that grizzlies are moving farther north because of global warming, resulting in cross-breeding.

Because polar ice is in retreat, transient conditions may actually favor the bears in the short term because they have more access to their seaBecause polar ice is in retreat, transient conditions may actually favor the bears in the short term because they have more access to their seabecause they have more access to their seal prey.

The shorter change in season in the Arctic threatens the survival of polar bears, because shorter frozen seasons means shorter hunting and breeding time for polar bears.

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

According to a Norwegian news outlet yesterday, Jon Aars (Fig. 1, below), from the Norwegian Polar Institute, confirms that this has been an excellent year for polar bear cubs around Svalbard because there has been abundant sea ice near denning areas on the east coast.

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.