The unbearable lightness of polar bear 'climate science'

From the “Emily Litella” department (never mind) and Zoologist Dr. Susan Crockford, comes yet another hilarious take-down of attempts to link polar bears and climate change last month. Turns out it’s just a blonde. Paging Andrew Derocher! Cleanup on aisle 5!

Dr. Crockford writes:

All the hubris last month about polar bear x grizzly hybrids, based on an unusual-looking bear killed near Arviat, has turned out to be wishful thinking by those who’d like to blame everything to do with polar bears on climate change. An awful lot of “experts” now have egg on their faces. That “hybrid” was just a blonde grizzly, as I warned it might.

grizzly-polar-bear-hybrid_arviat-2016-didji-ishalook

According to one report, Nunavut wildlife manager Mathieu Dumond said:

“Some otherwise pretty renown[ed] bear biologists jumped on the hybrid bear story without even knowing what they were talking about,” Dumond said.

“I think it was something blown out of proportion, with the wrong information to start.”

Gee, ya think? CBC ran a story too. But the CBC don’t really admit (see below) that they were the first out of the gate on this story and started the media madness. It was the CBC that relied on the opinion of a black bear expert from Minnesota (who likely only saw a picture) – but since he was willing to say it was a hybrid and that its presence was a sign of climate change, they went with it.  See “Grolar or pizzly? Experts say rare grizzly-polar bear hybrid shot in Nunavut: Expert says interbreeding may be happening more frequently due to climate change” (CBC 18 May 2016).

For background, see these recent posts on this putative hybrid and the issues on hybridization it spawned:

Another alleged grizzly-polar bear hybrid shot but it’s not a sign of climate change

Polar bear hybrid update: samples sent for DNA testing to rule out blonde grizzly

Five facts that challenge polar bear hybridization nonsense

Most polar bear hybrids said to exist have not been confirmed by DNA testing

Blonde grizzlies, like the one pictured below (which I posted the day the story broke), are actually a proven sign of natural variation within species – a critical lesson in biology that should be the take-home message here.

Grizzly light_NPS photo

“Paging Professor Derocher”: PBSG biologist and University of Alberta professor Andrew Derocher gave so many interviews to the media on this issue I lost count – he fed the media frenzy almost single-handedly. Well, except for granddaddy of polar bear experts Ian Stirling, who said (via the Toronto Star):

“I think it’s 99 per cent sure that it’s going to turn out to be a hybrid,” said Ian Stirling, an emeritus research scientist with Environment Canada and adjunct professor at the University of Alberta.”

Quotes from today’s story below.

Exotic bear harvested in Nunavut was a blonde grizzly” (Nunatsiaq Online, 21 June 2016) reported this afternoon [my bold]:

Media reports, quoting experts from the US or southern Canada instead of from Nunavut, then surfaced full of assumptions, a regional wildlife manager with the Government of Nunavut told Nunatsiaq News June 21.

“Everyone wanted to jump on the hybrid bear train,” said Mathieu Dumond, from Kugluktuk.

In reality, grizzly bears with blonde fur are “not uncommon,” and are often seen, especially in western Nunavut, Dumond said.

“It seems to be more frequent in spring or early summer, when the bears come out from hibernating. Then they shed and have a little more saturated colour in their fur.”

“The harvested bear was not a hybrid,” the government confirmed June 21, perhaps to the disappointment of many readers and researchers alike.

“Some otherwise pretty renown bear biologists jumped on the hybrid bear story without even knowing what they were talking about,” Dumond said.

“I think it was something blown out of proportion, with the wrong information to start.”

Now, a CBC News report said this:

But Nunavut’s Department of Environment (DOE) has confirmed that the “unusual” bear is not a hybrid.

“DOE submitted a tissue sample to a genetics lab for DNA analysis in order to verify the ancestry of the harvested bear,” Carrie Harbidge, an environmental education specialist, told CBC News.

“The DNA lab concludes that the animal was a blond grizzly bear, and it does not have a polar bear parent. Therefore, the harvested bear was not a hybrid.”

“From people on the ground, in the field, it was somewhat obvious that the results would come [out] that way,” says Mathieu Dumond, a wildlife manager for Nunavut’s environment department. “I think the excitement of a few hybrids found in the western part of Nunavut and in N.W.T … got people carried away a little bit.”

Ishalook had consulted with elders in Arviat before concluding the bear he’d shot was a mix. At the time, CBC News also spoke with a Minnesota-based leading bear expert, who concurred.

Dumond says that’s why it was important to verify the assessment with genetic testing, especially since there have been two or three confirmed cases of grizzly-polar bear mixes.

“It’s so rare that unfortunately I think nobody has a lot of experience in identifying a hybrid from the first sight.”

Blond grizzlies are far less rare, he adds: “While it’s not maybe the most common colour for the fur … it’s not something extraordinary. Every year we see some that are blond.”


Full story here, be sure to bookmark her blog: https://polarbearscience.com/2016/06/21/breaking-dna-results-prove-so-called-polar-bear-hybrid-was-a-blonde-grizzly/

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clipe
June 22, 2016 6:37 pm

Mods, anything from me in spam? Or did I hit the space bar instead?

June 22, 2016 7:15 pm

That “hybrid” was just a blonde grizzly, as I warned it might.

OK. Who put a full bottle of “Miss Clairol” in the trash bin?

Reply to  Gunga Din
June 22, 2016 8:27 pm

So now we have to worry about peroxide pollution?

Terry Gednalske
June 22, 2016 9:50 pm

Maybe I missed it, but why would the go-to guy be a black bear expert from Minnesota?
“Let’s see. Is it a grizzly-polar hybrid, or is it a blonde grizzly?” “Where can we find a bear expert in Alaska?” “I know, let’s call the black bear guy in Minnesota!”

Geoff
Reply to  Terry Gednalske
June 22, 2016 11:08 pm

#blackbearsmatter

papiertigre
Reply to  Geoff
June 23, 2016 12:57 am

Tired of that blonde grizzly flaunting it’s privilege.

papiertigre
Reply to  Geoff
June 23, 2016 12:59 am

It’s like all they care about is making the Arctic safe for the white bear.

Tom Yoke
Reply to  Terry Gednalske
June 23, 2016 3:13 pm

The cynics among us might think they went to that guy because he was a credentialed scientist who was willing to give a suitably alarmist answer.

Charlie
June 23, 2016 1:55 am

It’s a good thing all these scientists and media are on the side of the angels. Imagine the volume of misinformation that would pour forth if the were corrupt and funded by Big Corp. /sarc off.

E.M.Smith
Editor
Reply to  Charlie
June 23, 2016 3:13 am

So is the Big Pin Lobby corrupting the angel count?
snicker…

Carin
June 23, 2016 5:09 am

Just googled this which tells it’s normal variation.
http://www.adfg.alaska.gov/index.cfm?adfg=wildlifenews.view_article&articles_id=314
Mother nature has her trix.
Carin

Amber
June 23, 2016 6:56 pm

It as now been confirmed… Ian Stirling is a prophet . Aren’t real scientists supposed to get the facts before shooting their mouth off .
The U of A just dropped it’s reputation ..it’s now a hybrid university …99% sure .
What ever sells . The CBC can’t wait to pump scary global warming stories to it’s stuck up politically correct audience . How can you screw up Hockey Night in Canada ? The CBC found a way . George who ?

June 24, 2016 7:39 am

“Experts admit that many locals got carried away by the find”
This is what the UK’s Daily Mail concluded (23 June) about the DNA results and the Nunavut wildlife officer’s comments. Then basically, re-ran their original story, with all it’s global warming hype.
Now that’s the way to run a correction, media style!
http://www.dailymail.co.uk/sciencetech/article-3657142/Pizzly-bear-NOT-hybrid-DNA-tests-slaughtered-animal-blonde-grizzly-not-polar-bear.html
Other outlets, both inside and outside Canada (aside from CBC) are ignoring the DNA result turn-around and it’s likely that will continue, with the BREXIT win now the big story.

tadchem
June 24, 2016 12:46 pm

it’s true – blondes ARE more fun!