Polar Bear Population Much Higher Than in 20th Century: Is Something Fishy ...
If polar bears had any clue of the scale of speculation about the extinction threat they are facing due to climate change, they would have probably said, "you're kidding, right?"
If you think statistics are a pointer towards the growth or decline of a species, it will be interesting to have a look at the estimates published in a 2008 report by U.S. Senate Environment and Public Works Committee.
"The U.S. Fish and Wildlife Service estimates that the polar bear population is currently at 20,000 to 25,000 bears, up from as low as 5,000-10,000 bears in the 1950s and 1960s. A 2002 U.S. Geological Survey of wildlife in the Arctic Refuge Coastal Plain noted that the polar bear populations 'may now be near historic highs,'" it read.
J. Scott Armstrong of The Wharton School, University of
Polar Bears Have a Strong History of Survival
The reports and photographs of polar bears dying of exhaustion from swimming, unable to navigate the larger-than-usual water bodies formed between ice covers in the arctic, also added to the fears propagated by global warming alarmists. But a quick look at polar bear facts and figures will prove that deaths of polar bears cannot necessarily be associated to swimming large distances as there can be myriad numbers of reasons for the deaths of these cold-weather predators.
According to polar bear facts provided by World Wide Fund for Nature (WWF), the bears are excellent swimmers and have an average swimming speed of 9.7 kph (6 mph) while their average walking speed is a much less 5.5 kph (3.5 mph) which is a mechanism to keep body heat to the minimum. They have a layer of fat up to 11 cm (4.3 in) thick keeps the bears warm, especially while swimming.
Polar bears first evolved more than 110,000 years ago in coastal Siberia and proceeded to interbreed with brown bears multiple times after they first diverged. Under their dense fur is black skin, which aids in absorbing the rays of the arctic sun.
Polar Ice
One can look at the history of polar ice melting to better understand the habitat of polar bears.
Scottish scientist Dr. Chad Dick, of the Norwegian Polar Institute in Tromso, after researching the log books of Arctic explorers spanning the past 300 years, believes the outer edge of sea ice may expand and contract over regular periods of 60 to 80 years. According to his research findings , he concluded, "the recent worrying changes in Arctic sea ice are simply the result of standard cyclical movements, and not a harbinger of major climate change.
Facts About Brown Bear - News
By extracting the DNA from ancient bear bones, researchers were able to find that one female was the source of all modern polar bears' genetic material. 2. They once mated with brown bears: Though brown bears such as grizzlies are an entirely different
He disapproves of climate scientists, of Australian economists on the whole, and he has no time at all for the work of Treasury officials, which should make things fairly interesting should the public distaste for Julia Gillard bear its probable fruit
They have a layer of fat up to 11 cm (4.3 in) thick keeps the bears warm, especially while swimming. Polar bears first evolved more than 110000 years ago in coastal Siberia and proceeded to interbreed with brown bears multiple times after they first
Adds Thornburg, Raser, Charlie Brown's and Bear Island in Updates and section on Daily Podcast.) Aug. 3 (Bloomberg) -- JPMorgan Chase & Co. filed papers yesterday asking US District Judge Colleen McMahon to dismiss the $19 billion lawsuit filed by the
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Brown Bear Facts - Thomas Nogales Guides You To Know About Pet Care
Amongst the fantastic predators with the animal kingdom, the brown bear is actually a definite candidate for the “big and burly” sort. Huge and tall, having a effective stance, the brown bear ( Ursus arctos ) is actually a great example of adaptation and survival tactics. In this post, understand some intriguing brown bear facts.
Brown Bear Facts – Physical Characteristics
An typical brown bear weighs in between 300-780 kgs, based on the form of subspecies and geographical location. They are able to reach heights of five.6-9.two feet (total body length). The smallest subspecies could be the Eurasian brown bear, whilst the largest are the Kodiak as well as the Siberian brown bear. The all-American grizzly bear stands within the middle, with an typical weight of 150-450 kgs along with a shoulder height in between 3-3? feet.
There are at the least a number of existing subspecies with the brown bear. four subspecies with the brown bear are extinct. They’re :The Grizzly bear – discovered in North AmericaThe Kodiak bear – AlaskaEurasian brown bear – discovered in Europe, Siberia and MongoliaKamchatka brown bear – located in parts of Japan and RussiaEastern Siberian brown bear – East SiberiaHimalayan brown bear – identified in India, Pakistan and NepalSyrian brown bear – Middle Eastern countries like Syria, Turkey, Iran, IraqTibetan blue bear – Western places of China and TibetAmur brown bear – Russia, China and JapanThe brown bear has a distinctive significant construct having a big shoulder hump. Their claws are huge and curved with blunt ends, valuable for scooping up fish from a stream or digging up earth. On account of the hump, their forelimbs and muscles are really well-developed and they pack a effective thrust with their forepaws. Their skulls are significant and concave having a enormous, teeth-filled jaw. The brown bear has a far more lengthy and leaner facial profile, as compared to its other bear cousins. Their feet permit for crawling on all fours and standing upright, as the fore feet are digitigrade and their rear feet are plantigrade.
The brown bear’s fur is thick and lengthy. Fur color and tone can differ significantly amongst subspecies. The grizzlies are practically black or a deep, dark brown and some are even creamish or yellowish in tone. The Syrian brown bear even so, has a extremely light brown to tan coloring, really various from its European and American cousins.
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It is a great climber, is less dangerous than the brown bear, and is hunted for its fur and flesh. It is very amusing in captivity. The grizzly bear ( Ursus ...Field & Stream
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Brown bear - Wikipedia, the free encyclopedia
The brown bear (Ursus arctos) is a large bear distributed across much of northern Eurasia and North America. ... There are about 200,000 brown bears in the world. The largest ...
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Bear Facts and Information. Feeding, habitat, distribution, reproduction, anatomy and more. Facts about the Grizzly Bear, the Kodiak Bear, the Black ...