I know I was not the only one that thought the last polar bear count conducted by the US Geological Survey (USGS) in the Southern Beaufort generated an untenable result but it appears that some of those challengers are in a position to demand a recount.
CBC News ran a story late last week announcing a plan is in the works to do an aerial survey of Southern Beaufort Sea polar bears across their entire range over two years starting in 2017 (11 March 2016, “Joint U.S.-Canada Beaufort Sea polar bear survey planned“).
With luck, this period will not include another bout of the same thick spring ice conditions that decimated the population in the mid-2000s (which many reporters concluded was due to reduced summer sea ice because that’s what leading biologists implied). Even if it does, lucky timing will not negate the fact that this population is routinely subjected to devastating population declines caused by natural changes to spring sea ice conditions from which they have recovered on numerous occasions. Continue reading
Posted in Conservation Status, Population, Sea ice habitat
Tagged aerial survey, Alaska, Arctic, Beaufort Sea, facts, hunters, Invuialuit, mark-recapture, Northwest Territories, polar bear, population estimate, sea ice, traditional knowledge
This follow-up to my last post has some new information about drug residues remaining in polar bear meat after the animals have been tranquilized.
Posted in Advocacy, Conservation Status, Population
Tagged 45 day wait, Canadian Cooperative Wildlife Health Centre, Cattet, CBC, consume polar bear meat, drug residues in polar bear meat, Government of Nunavut, Health Canada, hunters, Inuit, polar bear, Telazol, Zoletil
It’s hard to imagine ancient people successfully hunting polar bears in any numbers – armed as they were with the simplest of bone and stone weapons. Archaeological evidence supports the impression that ancient Arctic hunters rarely took polar bears – there are a few polar bear bones, but not many, in most archaeological sites across the Arctic that were occupied over the last 10,000 years (see my Annotated Map of Ancient Polar Bear Remains of the World).
There is but one exception to this pattern: Zhokhov Island in the East Siberian Sea, Russia (see Fig. 1 below). Almost four hundred polar bear bones were recovered from two of the 13 semi-subterranian houses discovered on the island, well-preserved by permafrost for over 8,200 years. It is by far the largest – and the oldest – collection of polar bear bones left by human hunters anywhere in the world and it is described in a fascinating paper published in 1996 by Vladimir Pitul’ko and Aleksey Kasparov [contact me if you’d like to see it].
Zhokhov Island is situated just above 760N latitude and so has about the same length “winter’s night” as the northern tip of Novaya Zemlya, where William Barents and his crew spent the winter of 1596/97 (see previous post here ) – about 2 months, from early November to early February. The average January temperature today in the archipelago of the New Siberian Islands is −280C to −310C.
The East Siberian Islands are included in the Laptev Sea subpopulation of polar bears, the only Russian region that contributes a count (800-1,200 bears) to the global population estimate, based on an aerial survey conducted in 1993 (see previous post here).
Figure 1. Map of the New Siberian Islands off Siberia, with tiny Zhokhov Island circled. Map from Wikipedia