OK in the 80s but not now: ‘seeing more polar bears means there are more bears’

Wait for it, it will come: backlash from polar bear scientists for a statement by an Inuk bear safety guide in Labrador, reported by the CBC yesterday. The guide said there are more polar bears now than there were 25 years ago based on the fact that he is seeing more bears and that more bears mean more trouble with bears, including attacks on people. As I point out in my new book, The Polar Bear Catastrophe That Never Happened, only in the 1980s did biologists admit that seeing more bears meant there were actually more bears.

polar-bear-black-tickle_Edwin Clark submitted to CBC no date

This bear visited Black Tickle in Labrador a few years back. Edwin Clark photo.

It has not been OK anywhere else in the world over the last few years to suggest that seeing more bears meant more bears, whether you were Inuk or not – whether describing a subpopulation that’s officially ‘increasing’ or not.

According to biologist Andrew Derocher (University of Alberta), who famously said last year that ‘you can’t equate seeing more bears with there being more bears,’ all of the increased sightings and problems with bears in Labrador and Newfoundland are due to poor ice conditions. His colleague Ian Stirling (also University of Alberta) similarly puts the blame for increased polar bear/human conflicts and fatal attacks in Nunavut on a ‘shortage of ice‘. For polar bear specialists, it’s always ‘less ice‘, never ‘more bears.’

Rigolet location_Google mapsYesterday (1 April 2019), CBC News featured the work of bear safety guide Derrick Pottle, who lives in the Inuit community of Rigolet, southern Labrador (see map above): “Rigolet safety instructor teaches people to be smarter than the average bear.

It included this quote:

By Pottle’s count, bears are up in numbers — polar bears, black bears, and grizzly bears — and that’s a concern for people across the North.

We’re seeing a lot of bears. The more people you have out on the land and the more bears you have, the higher potential you have for a bear-human encounter,” he said.

“Twenty-five years ago you would very rarely see a track or a sign of a polar bear but now I’ve seen 18 bears in one day in different parts of Labrador,” he said.  

It’s been known for years that Davis Strait polar bear numbers have been growing, despite declining summer sea ice. This is due to abundant prey in the spring, especially burgeoning numbers of harp seals that give birth on the ice off southern Labrador and northern Newfoundland. Davis Strait is the only polar bear subpopulation worldwide considered by Environment Canada in 2018 to be still ‘increasing’ (see chart below).

That didn’t stopped Andrew Derocher for criticizing me in 2017 for suggesting that the abundance of polar bear sightings in Newfoundland and Labrador that year may have indicated a growing population.

globalpbstatusandpopulationmapec2018

This is one of the many reasons that I felt it necessary to examine the ways that polar bear specialists have been low-balling global population size estimates since the turn of the 21st century. It turns out that when you extrapolate from known population sizes to unknown or out-of-date regions with the same ice conditions, you get a global estimate close to 40,000 (about 39,000: range 26,000-58,000), as explained in this recent post.

via polarbearscience

https://ift.tt/2CMKdyM

April 2, 2019 at 11:03AM

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

%d bloggers like this: