Sentences with phrase «polar bears use»

Can polar bears use terrestrial foods to offset lost ice - based hunting opportunities?

At the same time, the scientists found that polar bears use an unusual physiological response to avoid unsustainable heat loss while swimming in the cold Arctic waters.

It struck me as totally insane since according to historical accounts of Canada polar bears used to regularly live in the Gulf of St Lawrence and in southern Manitoba.

when you've forgotten about when polar bears used to roam the arctic, don't worry kid, i've got tons of pictures of how they lived — all housed in a datacentre in that building over there....

Not exact matches

«My father used to go hunting polar bear a lot,» Max says.

When he teed off at 8:12 for his morning round, Nicklaus looked more like a polar bear than the Golden Bear he uses as a trademark; he was wearing three sweaters, a knitted yellow dickey and a rain sbear than the Golden Bear he uses as a trademark; he was wearing three sweaters, a knitted yellow dickey and a rain sBear he uses as a trademark; he was wearing three sweaters, a knitted yellow dickey and a rain suit.

For parents in cold climates, this means that it can be used under a winter jacket without making you feel (and look) like a polar bear.

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.

Using CO ₂ data from nine females, Pagano and his colleagues calculated the field metabolic rates for polar bears going about their springtime lives.

The study's results currently are used by the International Union for Conservation of Nature's polar bear specialist group, which completes assessments of polar bears and issues the species» conservation status.

The target imagery (a) was searched for polar bears, and the reference imagery (b) was used for comparison.

To measure polar bears» energy expenditure during the summer months, Whiteman and his colleagues used satellite collars to track the movement of individual bears, both on shore and on ice.

Designed by artist Bjargey Ólafsdóttir, this 50 - by -90-metre polar bear was drawn on the Langjökull glacier, Iceland, using red food dye.

While keeping the rule — which limits use of the Endangered Species Act to curb emissions of greenhouse gases — Salazar held open the possibility of adding habitat protections for the polar bear later.

When my daughter was young, I tried explaining evolution to her by using polar bears as an example of a «transitional species» between land mammals and marine mammals, but that was wrong.

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.

Using data collected from adult females in 11 subpopulations of polar bears across the Arctic, Regehr and Laidre's team calculated the generation length for polar bears — the average age of reproducing adult females — to be 11.5 years.

They then used the satellite record of Arctic sea ice extent to calculate the rates of sea ice loss and then projected those rates into the future, to estimate how much more the sea ice cover may shrink in approximately three polar bear generations, or 35 years.

Surprisingly, the 17th - century winterers did not use polar bear skins to make clothes, as later polar travellers did.

By shedding light on potential mechanisms that facilitated that bear's survival during her long swim, as well as the overall metabolism and activity of bears, the current study «profoundly contributes to understanding the value of summer habitats used by polar bears in terms of their energetics,» Harlow says.

The study, published in a recent issue of the journal Ecography, was accomplished using satellite - linked telemetry - tracked populations of polar bears in the Beaufort Sea and Hudson Bay.

(This status allowed the Administration to create a special rule exempting greenhouse gas emissions — which are, through global warming, melting the artic sea ice used by the polar bears for hunting — from regulation under the Endangered Species Act.)

A federal judge for the District of Columbia yesterday rejected a legal argument used by the Bush Administration in 2008 to argue that the polar bears are threatened but not endangered.

The original polar mount used a welded steel shaft and a 22 - foot diameter welded bearing on top that was assembled like segments of an orange.

Often photographed clinging to Arctic ice floes as its habitat melts away into warming waters, the polar bear is the poster child for U.S. efforts to save wildlife on the brink of extinction using the Endangered Species Act.

One polar bear is documented to swim for nine straight days using the species» front paws - only method, a journey which her cub is unable to endure.

Students could also use the information learned to develop a «Day in the Life» of a polar bear ~ pretending to be a polar bear and describing a typical day ~ using 4 specific facts learned from the webquest.

In Canada, they were originally used as sled dogs and for hunting polar bears.

The name Nanook is most often used to refer to sled dog breeds or breeds of dog that are pure white and resemble polar bears in some way.

These dogs were a huge help to the natives as they were used to hunt seals, chase away polar bears and pull heavy sledges loaded with food or camp supplies.

They were used to hunt seals, chase away polar bears, and sled dogs.

We also can use support personnel to photograph and record video of the polar bears in action, and to help when they return to the beach, and a few other tasks to assure that the morning goes smoothly.

Other dogs were more massive at 30 kg and appear to be dogs that had been crossed with wolves and used for polar - bear hunting.

Daily tours to see polar bears and other Arctic wildlife through the use of ATVs and touring trailers

A tribute after the death of a young and innovative field researcher who used a scat - sniffing dog to help figure out polar bears» changing diets.Read more...

Despite decades of helicopter surveys, field research and the increasing use of satellite - monitored tags and the like, much of what polar bears do in the Arctic remains out of sight and unmonitored.

If the time horizons on sea level rise and glacial melt are potentially very long, and polar bears probably aren't in immediate danger from climate change, what is the very simple rallying point that is both scientifically defensible and that can be used to get people's attention and pull their heartstrings?

Linda was an excellent listener and her discussions with Cree elders were part of what ultimately set her on a course of using non-invasive techniques to study polar bears.

A fascinating new paper makes a strong case, using new genetic clues, that polar bears have been around a lot longer, and thus endured more climate vagaries, than most previous estimates.

I wasn't actually trying to weave polar bears into my question but rather using that ad as an example of how in news and advertising for donations, we the public, are getting hype, making it difficult to determine what is real and what is hype.

Previous studies had suggested, mainly based on mtDNA results [using DNA from the mitochondria within cells], that polar bears should be an example of unusually rapid adaptation to arctic conditions.

Here are some possible choices — in order of increasing sophistication: * All (or most) scientists agree (the principal Gore argument) * The 20th century is the warmest in 1000 years (the «hockeystick» argument) * Glaciers are melting, sea ice is shrinking, polar bears are in danger, etc * Correlation — both CO2 and temperature are increasing * Sea levels are rising * Models using both natural and human forcing accurately reproduce the detailed behavior of 20th century global temperature * Modeled and observed PATTERNS of temperature trends («fingerprints») of the past 30 years agree

A photograph of a polar bear standing balefully on a small ice floe was used to illustrate the letter from 255 members of the National Academy of Sciences decrying attacks on climate research and pressing for swift action to blunt global warming.

In response, Armstrong et al. (Interfaces, 38 (5): 382 - 405, 2008) questioned the General Circulation Models (GCMs) upon which U.S.G.S. analyses relied; challenged the independence of U.S.G.S. from the policy process; and criticized the methods used by the U.S.G.S. to project the future status of polar bears.

She's co-authored a recent paper — «The early bear gets the goose: climate change, polar bears and lesser snow geese in western Hudson Bay» — showing that bears in that region are foraging increasingly on shore, eating grasses and particularly relishing (apparently) snow geese and their eggs [UPDATE: Ms. Gormezano described grass (and kelp) foraging in my Science Times story but that's not in the paper; her co-author properly rejected the use of the word «relished»].

For years polar bears were used as an example of quantum evolution and it is clear that they are a very different species from brown bears.

An innovative use of radio collars has allowed researchers to gauge the long - distance swimming skills of polar bears in the Arctic Ocean waters north of Alaska.

Ms. Gormezano is not a fan of the forecasting methods used by Dr. Amstrup to conclude that a two - thirds reduction in polar bears is possible midcentury if summer sea ice continues retreating.

I did this once with walrus where we attached a camera to the tusk of the animal, another time with the bowhead whale using a suction cup attaching a camera to the back of the whale, and yet again more recently with my 3D Polar Bear film attaching a camera to a female polar bBear film attaching a camera to a female polar bearbear.

It was, of course, a man under the fur: Brendan Cummings, a lawyer and public lands director for the Center for Biological Diversity, one of the environmental groups that used litigation to force the Department of the Interior to consider listing polar bears under the Endangered Species Act as threatened (which it did).