This article is from a few months ago.
This information has to be spread far and wide.
Starved
polar bear perished due to record sea-ice melt, says expert
Climate
change has reduced ice in the Arctic to record lows in the past year,
forcing animals to range further in search of food
6
August, 2014
A
starved polar bear found found dead in Svalbard as "little more
than skin and bones" perished due to a lack of sea
ice on which to hunt seals, according to a renowned polar bear
expert.
Climate
change has reduced sea ice in the Arctic to record lows in the
last year and Dr Ian Stirling, who has studied the bears for almost
40 years and examined the animal, said the lack of ice forced the
bear into ranging far and wide in an ultimately unsuccessful search
for food.
"From
his lying position in death the bear appears to simply have starved
and died where he dropped," Stirling said. "He had no
external suggestion of any remaining fat, having been reduced to
little more than skin and one."
The
bear had been examined by scientists from the Norwegian Polar
Institute in April in the southern part of Svalbard, an Arctic island
archipelago, and appeared healthy. The same bear had been captured in
the same area in previous years, suggesting that the discovery of its
body, 250km away in northern Svalbard in July, represented an unusual
movement away from its normal range. The bear probably followed the
fjords inland as it trekked north, meaning it may have walked double
or treble that distance.
Polar
bears feed almost exclusively on seals and need sea ice to capture
their prey. But 2012 saw the lowest
level of sea ice in the Arctic on record. Prond Robertson, at the
Norwegian Meteorological Institute, said: "The sea ice break up
around Svalbard in 2013 was both fast and very early." He said
recent years had been poor for ice around the islands: "Warm
water entered the western fjords in 2005-06 and since then has not
shifted."
Stirling,
now at Polar Bears
International and previously at the University of Alberta and the
Canadian Wildlife
Service, said: "Most of the fjords and inter-island channels in
Svalbard did not freeze normally last winter and so many potential
areas known to that bear for hunting seals in spring do not appear to
have been as productive as in a normal winter. As a result the bear
likely went looking for food in another area but appears to have been
unsuccessful."
Research
published in May showed that loss
of sea ice was harming the health, breeding success and
population size of the polar bears of Hudson Bay, Canada, as they
spent longer on land waiting for the sea to refreeze. Other work has
shown polar bear weights are declining. In February a panel of polar
bear experts published a paper stating that rapid ice loss meant
options such the feeding
of starving bears by humans needed to be considered to protect
the 20,000-25,000 animals
thought to remain.
The
International Union for the Conservation
of Nature, the world's largest professional conservation network,
states that of the 19
populations of polar bear around the Arctic, data is available
for 12. Of those, eight are declining, three are stable and one is
increasing.
The
IUCN predicts that increasing ice loss will mean between one-third
and a half of polar bears will be lost in the next three generations,
about 45 years. But the US and Russian governments said in March that
faster-than-expected ice losses could mean two-thirds
are lost.
Attributing
a single incident to climate change can be controversial, but Douglas
Richardson, head of living collections at the Highland Wildlife Park
near Kingussie, said: "It's not just one bear though. There are
an increasing number of bears in this condition: they are just not
putting down enough fat to survive their summer fast. This particular
polar bear is the latest bit of evidence of the impact of climate
change."
Ice
loss due to climate change is "absolutely, categorically and
without question" the cause of falling polar bear populations,
said Richardson, who cares for the UK's only publicly
kept polar bears. He said 16 years was not particularly old for a
wild male polar bear, which usually live into their early 20s. "There
may have been some underlying disease, but I would be surprised if
this was anything other than starvation," he said. "Once
polar bears reach adulthood they are normally nigh on indestructible,
they are hard as nails."
Jeff
Flocken, at the International
Fund for Animal Welfare, said: "While it is difficult to
ascribe a single death or act to climate change it couldn't be
clearer that drastic and long-term changes in their Arctic habitat
threaten the survival of the polar bear. The threat of habitat loss
from climate change, exacerbated by unsustainable killing for
commercial
trade in Canada, could lead to the demise of one of the world's
most iconic animals, and this would be a true tragedy."
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