This powerful, balanced documentary, with a focus on the bears of Western Hudson Bay, can now be watched online. A Canadian Broadcasting Corporation (CBC) production, it includes interviews with polar bear biologists Mitch Taylor (screen-cap below) and Seth Stapleton – juxtaposed with statements from outspoken polar bear conservation advocate Andrew Derocher.
I was not mentioned by name (making me “she who cannot be named” yet again?) but host Reg Sherren did discuss the contents of the email I received from PBSG chairman Dag Vongraven earlier this summer about their proposed clarification to the global population estimate (and posted here).
It can be viewed online at “CBC Player,” in its entirety (45 minutes long), without commercials – see it http://www.cbc.ca/player/Shows/Shows/Absolutely%20Canadian/Absolutely%20Manitoba/ID/2499492515/?cmp=rss
I can’t guarantee those outside Canada will be able to view it but I watched it Sunday night (August 31) from British Columbia. It’s well worth the time.
[Aired originally on “Absolutely Manitoba” (Season 2014, Episode 5, Aug 30, 2014), by Reg Sherren. See announcement article here]
[Note: the “Sharon Crockford” interviewed in the film is no relation to me, as far as I know!]
Posted in Advocacy, Conservation Status, Summary
Tagged CBC, Dag Vongraven, declining sea ice, Derocher, documentary, endangered species, global population estimate, Mitch Taylor, polar bears, politics of polar bears, Reg Sherren, Seth Stapleton, threatened with extinction, western hudson bay
“Our results suggest that mark–recapture estimates may have been negatively biased due to limited spatial sampling. We observed large numbers of bears summering in southeastern WH, an area not regularly sampled by mark–recapture.” Stapleton et al. 2014.
Polar bear at Wapusk National Park in August 2011. Courtesy Parks Canada.
We’ve seen the results of this 2011 study before, in government report format. But now it’s been revamped, peer-reviewed and published in a respected scientific journal – it actually came out in February, without fanfare, but I’ve only just come across it.
Some excerpts below, with conclusions that should raise some eyebrows.
Posted in Conservation Status, Population, Sea ice habitat
Tagged aerial survey, early breakup, endangered, invalid methods, later-than-average breakup, mark-recapture, polar bear, population estimate, Seth Stapleton, Southern Beaufort, Southern Hudson Bay, threatened, US Fish and Wildlife Service, Wapusk National Park, western hudson bay
Satellites images might be able to replace aerial counts of polar bears in some places — if there are no clouds. But it seldom distinguishes cubs and can’t tell males from females, found a 2012 study of Foxe Basin bears that’s just been published.
Note: This is my 200th post since July 26, 2012!
Posted in Population
Tagged aerial survey, cubs, Foxe Basin, helicopter survey, polar bear, population estimates, Rowley Island, satellite images, sea ice, September ice minimum, Seth Stapleton, USGS