This is week 15 for most polar bears onshore near Churchill in Western Hudson Bay, which means they have been onshore for almost 4 months. Still, photos being circulated are still showing bears in excellent condition and we are just waiting to see if freeze-up this year is as early as it has been for the last two years.
Polar bear researcher Andrew Derocher says it takes four years of good sea ice conditions to recruit a polar bear from birth but implies that 2019 is the first year in decades that conditions for bears have been ‘good’ in Western Hudson Bay. He thinks he can get away with saying this because he hasn’t published any of the data on body weight and body condition he’s collected on these bears over the last 25 years (apparently, whatever funding agency pays for his research does not require him to publish the data he collects).
But independent observations such as dates of ice freeze-up in fall, ice breakup in summer, dates and condition of bears recorded onshore, suggest he’s blowing smoke: at least five out of five of the last sea ice seasons for WH bears have been good. That means we should be seeing more bears in the next official population count.
Posted in Advocacy, Conservation Status, Polar bear attacks, Sea ice habitat
Tagged body condition, breakup, Derocher, fat bears, freeze-up, Hudson Bay, polar bear, sea ice, thriving
Times have changed: where once many scientists worried that polar bears could not survive an Arctic with 40% less ice, now the concern is that people of the Arctic might not be able to keep themselves safe from growing numbers of increasingly fearless bears.
International Polar Bear Day is tomorrow, 27 February. It’s a good time to reconsider polar bear conservation in light of current realities. Polar bears are not threatened with extinction by loss of sea ice habitat but continue to thrive in spite of it (Crockford 2017).
Fat bear in August 2017 outside Arviat, Nunavut. Gordy Kidlapik photo.
Tomorrow, the 2018 State of the Polar Bear Report will be released. But for now, see some of the failed claims below.
Posted in Advocacy, Conservation Status, Polar bear attacks, Population
Tagged attacks, breakup, fat bears, freeze-up, polar bear, population, problem bears, sea ice, threatened, western hudson bay
Over the weekend in Canada, the CBC ran a polar bear news feature that is now available online (“Polar bears in peril: the bleak future of Churchill bears,” The National, CBC, 3 December 2018). It gave polar bear biologist Nick Lunn of Environment Canada free rein to spread unsubstantiated claims and outright falsehoods about the status of Western Hudson Bay polar bears and sea ice. Apparently, he and the CBC learned nothing from National Geographic‘s fiasco over their ‘starving’ polar bear video last year: they still think the public will be swayed to “act” on human-caused global warming if a persuasive expert tells them that polar bears are on their way to extinction. I expect many were convinced otherwise, since the facts are available for all to see.
No triplet litters born since 1996? Nonsense, as the photo below (from 2017) shows.
The CBC video is described this way:
“They are a majestic icon of Canada’s North, but polar bears have also come to symbolize climate change. And scientists say the future for one particular population of polar bears in northern Manitoba is dire.“
Posted in Advocacy, Conservation Status, Population, Sea ice habitat
Tagged breakup, CBC, Churchill, declining population, fat, freeze-up, Hudson Bay, Nick Lunn, polar bear, sea ice, triplets, weight
This is the second year in a row that freeze-up of Western Hudson Bay ice has come earlier than average. Movement of tagged bears and reports by folks on the ground in WH show some polar bears are starting to hunt seals on the sea ice that’s developing along the shore. It’s unlikely that a strong wind will again blow the newly-formed ice offshore (as happened earlier this year) because the ice is more extensive. It seems polar bear viewing season in Churchill will be ending early this year, just like it did last year.
The 9 November map Andrew Derocher (University of Albera) published on twitter showing tagged and collared polar bear movements on Hudson Bay makes it look like almost no ice is present:
However, the Canadian Ice Service chart for 10 November shows the ice very clearly:
UPDATE 13 November 2018: See more recent ice charts and the latest (November 4-11, week 19) report from the Polar Bear Alert Program in Churchill that confirms the bears are moving offshore.
Posted in Conservation Status, Life History, Sea ice habitat
Tagged alert, charts, Churchill, concentration, freeze-up, Hudson Bay, hunting, polar bear, problem bears, sea ice, seals
What a difference two weeks make! When the seasonal minimum Arctic sea ice extent occurs in September, polar bear doom-mongers always forget to tell you that within two months, sea ice will return to virtually all regions where polar bears have spent the summer on land, including Hudson Bay. Just as it did in 2007, when polar bears did not die by the thousands due to lack of fall sea ice, polar bear habitat is reforming.
This year, the seasonal minimum came on 23 September. Despite the fact that the US National Snow and Ice Data Center proclaimed that “unusual warmth” in the Arctic continued during October, over the last two weeks sea ice expanded from 6 mkm2 to 9 mkm2. At the current rate of ice growth documented by sea ice charts (see below), Arctic sea ice will be wide-spread by 23 November.
Last year, an early freeze-up of Western Hudson Bay sea ice almost ruined the Polar Bear Week campaign devised by Polar Bears International to drum up donation dollars and public sympathy for polar bear conservation. Many bears were on the ice hunting by 7-8 November in 2017 before the celebratory week was done (the average date that bears left the ice in the 1980s): sea ice charts suggest the same may be happening this year.
Ice is forming along the Hudson Bay coast more than a week earlier than it was last year (barely discernible on the map below but detailed ice charts show it clearly), consistent with early build-up of ice in the Canadian Archipelago, East Greenland, and Foxe Basin since mid-September.
The question is: will the ice continue to build over the next few weeks or get blown offshore? See the ice charts below for this year and 2017.
Posted in Life History, Sea ice habitat
Tagged Churchill, freeze-up, gray ice, Hudson Bay, new ice, polar bear alert, polar bears, sea ice, shorefast ice, western hudson bay, winds