In what looks like a follow-up to last week’s CBC documentary, The Politics of Polar Bears, the London (UK) based DailyMail published interviews with polar bear biologists Mitch Taylor and Andrew Derocher (September 9, 2014).
The CBC film did have a “one scientist vs. another” flavor about it and this article definitely echoes that approach. My comments below on Derocher’s insinuations and questions about starving bears and global warming.
Posted in Advocacy, Conservation Status, Sea ice habitat
Tagged caribou, conservation, DailyMail, Derocher, fasting, goose eggs, Gormezano, ice-free season, Mitch Taylor, polar bears, Rockwell, sea ice, sea ice decline, starving, survival, terrestrial foods, weight loss, western hudson bay
“Blizzards, we had fog — we had to sleep in the helicopter, on the sea ice one night, because we couldn’t fly anywhere,” Markus Dyck, senior polar bear biologist with the GN, told Nunatsiaq News Sept. 5.”
Fog was the theme of polar bear research this summer in Queen Maud Gulf, otherwise known as the M’Clintock Channel polar bear subpopulation region.
The ice has been heavy in that region as well, according to a the National Snow and Ice Data Center (NSIDC) and reported yesterday in another story (“Heavy pack ice in NW Passage ice creates tough conditions this year: Pack ice clogs Queen Maud Gulf“).
For maps showing where M’Clintock Channel and Queen Maud Gulf actually are, see the maps — and more quotes — below.
Posted in Population, Sea ice habitat
Tagged biopsy dart, heavy sea ice, helicopter survey, M'Clintock Channel, Markus Dyck, Northwest Passage, NSIDC, polar bear, population estimate, population survey, Queen Maud Gulf, tagging
Here is the August 2014 follow-up to my post on the July 2013 track map for female polar bears being followed by satellite in the Beaufort Sea by the US Geological Survey (USGS) – “Ten out of ten polar bears being tracked this summer in the Beaufort Sea are on the ice.”
See that post for methods and other background on this topic, and some track maps from 2012 (also available at the USGS website here).
The USGS track map for August 2014 is copied below (Fig. 1).
Compare this to July’s map (Fig. 4). The 20 bears from May (down to 13 in June) are now down to 11. All seven of the bears outfitted with glue-on satellite transmitters in April [either males or subadult animals] have either moved out of the area or their tags have fallen off or stopped transmitting. This means that all of the bears shown on the maps below are females.
At the end of August, nearing the minimum extent of ice for this year, seven bears were on the ice and only four were on land.
Posted in Sea ice habitat
Tagged Alaska, Beaufort Sea, Chukchi Sea, polar bear habitat, polar bear movements, polar bears, satellite collars, sea ice, sea ice reference page, Southern Beaufort, tracking polar bears, USGS
Well, sort of — what they did was provide a logical fallacy reply to an almost incoherent comment by a PBI Facebook supporter who had watched the documentary and complained of bias (such a predictable response).
See what you think, screen-cap below (taken September 3, 2014 at about 2PM Pacific Time.
[UPDATE added September 4, 2014 at 8:30PM Pacific, see below]
Posted in Advocacy, Conservation Status, Sea ice habitat
Tagged Derocher, documentary, endangered, Environment Canada, Facebook, IPCC, IUCN, logical fallacy, man behind the curtain, Polar Bear Specialist Group, polar bears, Polar Bears International, politics of polar bears, sport hunting, threatened, trophy bears
The CBC in Canada is pretty much a mirror image of the BBC in the UK, ABC in Australia and PBS in the US. So you might appreciate my shock at the almost unbelievable balance contained in the recently broadcasted CBC documentary, “The Politics of Polar Bears: Tracking the Celebrity Bear.”
The film is a profound change from the hype and pessimism that has dominated the polar bear issue in Canada and abroad, supported unchallenged by the CBC. Finally, TV viewers were given some decently balanced perspective on the status of polar bears in Western Hudson Bay.
If the take-away message tipped towards reason and optimism rather than panic over the status of polar bears, it’s because the evidence was strongly in that direction.
Posted in Conservation Status, Population, Sea ice habitat
Tagged Churchill, declining sea ice, Derocher, endangered, he who must not be named, Mitch Taylor, PBSG, polar bear attack, polar bears, population estimate, qualified guess, sea ice models, Steve McIntyre, threatened, western hudson bay
The yearly sea ice minimum extent is almost upon us, which has recently been the seasonal signal for excitable biologists and their activist groupies to resume their breathless rants about what sea ice loss could mean for polar bears.
Never mind that the summer minimum extent reached in September, no matter how low it goes, is pretty much irrelevant to polar bear health and survival. As I’ve discussed before, what’s really important is the presence of not-too-thick ice during the spring, so they can catch lots of young seals and put on lots of fat.
But to a lesser degree, the extent at mid-to-late summer is important because this is when pregnant females that prefer to make their maternity dens on shore are looking for good places to spend the winter.
So the topic for today is this: how much does the extent of ice at the height of summer dictate where polar bear females make their winter dens?
Posted in Life History, Sea ice habitat
Tagged Arctic ice death spiral, Arctic ice extent, Barents Sea, CIS, denning females, Labrador, Mark Serreze, NSIDC, polar bear, Southern Beaufort, summer sea ice, summer sea ice minimum, tracking polar bears, USGS, western hudson bay
This is shaping up to be a banner year for polar bears in Foxe Basin (central Canada), with more ice in this region than there’s been since 1992. Hudson Bay still has a large patch of thick first year ice, more than there has been at this date since 2009, which was a late breakup year.
Ice maps and charts below tell the story.