The largest conservation organization in the world says that predictive models developed by polar bear biologist Steven Amstrup are utterly unsuitable for scientifically estimating future populations. Earlier this year, mathematical modeling experts at the International Union for the Conservation of Nature, who maintain the Red List of Threatened Species, made it clear that Amstrup’s models (used in 2008 to convince the US Fish and Wildlife Service to list polar bears as ‘threatened’ due to predicted global warming) do not meet IUCN standards.
I’d say this makes Amstrup’s polar bear projections (Amstrup et al. 2008, 2010) no more scientifically useful than a crystal ball prophesy, but you wouldn’t know it by his recent actions — or the silence of his fellows.
Posted in Advocacy, Conservation Status, Sea ice habitat
Tagged Amstrup, Bayesian models, conservation, crystal ball, data deficient, ESA, extinction, IPCC, IUCN, models, PBSG, polar bear, Polar Bear Specialist Group, predictions, Red list, Resit Akçakaya, sea ice, threatened, vulnerable
Yesterday, the BBC published a story that gave the two most alarmist polar bear researchers on the planet a forum to market their ‘polar bears are doomed’ message. This time the desperation shows: watch how these biologists move the goal-posts, make claims so misleading they border on lies, and pretend they don’t have big, big trouble with their predictive models.
Posted in Advocacy, Conservation Status, Population, Sea ice habitat
Tagged Amstrup, average global temperature, Bayesian models, BBC, climate change, Derocher, extinct, future climate, future population decline, global warming, polar bear, sea ice declines, sea ice models
IUCN Polar Bear Specialist Group conservation biologists are determined to have polar bears listed as ‘threatened with extinction’ by the International Union for Conservation of Nature (IUCN) in 2015 – even though the bears would not meet that classification if assessed today.
According to the minutes of their last meeting (in addition to the astonishing admissions from sea ice experts I reported yesterday), PBSG members are busy planning their strategy. They have thrown objectivity to the wind and are certain they can find a way to
mask overcome the inadequacies of their case and see polar bears remain listed as ‘vulnerable’ (IUCN-equivalent to ‘threatened’ in the US) on the 2015 IUCN Red List update.
Along with some other priceless quotes, the minutes reveal their plan. See the original document for the context of these quotes here and an excerpt of “the plan” (pgs. 12-17) here. Continue reading
Posted in Conservation Status, Population
Tagged Bayesian models, conservation biology, conservation status, IUCN, PBSG, polar bear, population estimates, predictions, Red list, threatened, vulnerable
International Forum on Conservation of Polar Bears
December 3-6, Moscow.
[Updated November 30, 2013]
If you’ve wondered why there’s been so much polar bear hype circulating over the last couple of weeks, the reason is almost certainly this upcoming meeting.
This year marks the 40th anniversary of the signing of an international agreement to protect polar bears from commercial and unregulated sport hunting. Next week, the five Arctic nations that signed the original agreement will meet again, in Moscow, to renew their vows.
One of stated goals of the meeting is to redefine the original agreement, which focused on over-hunting (see the complete draft agenda here). Can you guess what the changes will involve?
Posted in Conservation Status
Tagged Amstrup, Arctic nations, Bayesian models, Circumpolar Action Plan for Polar Bear Conservation, conservation meeting, international agreement, IUCN, Leona Aglukkaq, meeting of the parties, Moscow, polar bear conservation, polar bear forum, Polar Bear Specialist Group, polar bears, sea ice, USGS
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