Viewers outside the UK can now watch polar bear scientist Steve Amstrup live (Episode 2, filmed 2 November 2016), state that there are “20,000-25,000” polar bears in the world, almost a full year after the IUCN Red List put the worldwide polar bear population size at 22,000-31,000.
[even though Amstrup (now chief scientist and spokesperson for Polar Bears International) was a co-author of that 2015 Red List report, Wiig et. al. 2015]
Watch Steve Amstrup, live (Episode 2, filmed 2 November 2016) state that sea ice is only “usually” present in March/April when females with cubs emerge from their dens to feed – as if there has ever not been sea ice present at this critical time of year!
Watch Amstrup , live (Episode 2, filmed 2 November 2016) not point out that the prediction he was responsible for making in 2007 (that got polar bears listed as ‘threatened’ in the USA) has been a total failure: even though the USGS models predicted that polar bear numbers worldwide would decline by 67% and Western Hudson Bay polar bears (as well as nine others) would be wiped out completely when summer sea ice reached the levels they’ve been at since 2007, he pretends that prediction was scientifically valid.
We’ve had sea ice levels not predicted to occur until 2050 for 8 out of the last 10 years and polar bears are still going strong. If Amstrup had been right about the relationship of summer sea ice and polar bear numbers, there would have been no polar bears in Churchill for the BBC to film this year.
Watch all three hour-long episodes below as these two organization team up to promote fear of future global warming with polar bears (or polar bears, as Humble says it). Decide for yourself if polar bear science is being fairly represented.
Posted in Advocacy, Population, Sea ice habitat
Tagged advocacy, Amstrup, BBC, carbon footprint, ESA, PBI, polar bear, population size, predictions, Red list, threatened, USGS, youtube video
The simple fact is that if polar bear experts had been right about the threat to polar bears from the loss of summer sea ice in the Arctic, there would be no polar bears in Churchill this fall. No bears for tourists to photograph, none for biologists to study, and certainly none for the BBC to film for an upcoming three-part TV special called “Arctic Live.”
The low-ice future that biologists said would doom polar bears to extinction by 2050 has already happened in 8 out of the last 10 years. The sea ice future has been realized.
Polar bears have experienced those supposedly deadly low-ice summers for almost a decade but the global population did not drop by 2/3 as predicted and not a single one of the ten subpopulations predicted to be extirpated under those conditions has been wiped out.
How much more wrong can you be than that? Will the BBC mention this conundrum in their show? Will the polar bear experts they consult share this fact with viewers? We’ll all have to watch and see [show times and summaries of each program here, 1-3 November] but here are some background facts that might enhance your viewing experience.
UPDATE: Sea ice condition of Hudson Bay at 1 November 2016 below from the Canadian Ice Service (some slushy ice looks to be forming along the coast north of Churchill – this is how freeze-up starts). See the animation for the last 10 days here:
Posted in Population, Sea ice habitat
Tagged Arctic Live, BBC, Churchill, extinction, extirpation, facts, future, minimum, observations, polar bear, predictions, resilience, sea ice, September, survival, threatened
Veteran Yale University research ecologist Dan Botkin has a new book coming out tomorrow (Saturday 15 October) that you might want to look at:
A number of chapters are relevant to polar bears, including these three:
“Myth 11: Without Human Interference, Earth’s Climate is Stable”
“Myth 13: Climate Change Will Lead to Huge Numbers of Extinctions”
“Myth 25: Compared to Climate Change, All Other Environmental Issues Are Minor”
I found the book clearly written in a readable style (Table of Contents here). It provides timely insight into critical issues related to conservation and species extinction, with many real-world examples that counter theoretical assumptions (polar bears are discussed in the Overview). I found the energy issues (Myths 23 and 24) an awkward distraction but others might find them of interest. It’s a good companion to Bjorn Lomborg’s The Skeptical Environmentalist (an excellent reference from 2001 but much more detailed).
Pre-0rders now being taken:
Twenty-five Myths That Are Destroying the Environment: What Many Environmentalists Believe and Why They Are Wrong. Daniel B. Botkin 2017. Rowman & Littlefield Publishers, Inc., Lanham, MD 20706. $12.71 PAPERBACK; $7.51 KINDLE
Peak inside via Amazon, more about Dan Botkin and his publication record, and the book below.
Posted in Book review, Conservation Status, Population
Tagged conservation, Daniel Botkin, ecology, extinction, marine mammals, myths, new book, polar bear, review, sea ice, walrus
From Saturday 8 October, English journalist, author and broadcaster James Delingpole (via his Breitbart column) writes about polar bears:
The Truth About Polar Bears: They’re a Dangerous, Out of Control Pest…
“Crockford is the author of a Jaws-style thriller on ravenous polar bears killing humans called Eaten. At least one polar scientist who has read it considers its “science-based scenario” to be frighteningly plausible.
In field-level polar bear management circles, people don’t talk about the kind of scenario that forms the premise of this novel as an “if”. Instead, they describe it as a “when” and they are not looking forward to it.
Eek is right! The book has been nightmare-inducing for many readers. Put EATEN on your Christmas shopping list (all purchase options here). It makes a great gift and supports the work I do here. Colleagues have said their young adult children really enjoyed it.
[I’m reminded of Christmas since we had turkey for Canadian Thanksgiving this weekend – a fabulous gathering of all the local family at my place, including the two (!!) grandbabies, both of whom are now walking. I’ll be sending Nico to Churchill before you know it]
[And FYI, I’ve updated the Svalbard “problem no one is talking about” post with statistics by year (1974-2015) for polar bears killed to protect life and property]
Posted in Book review, Polar bear attacks, Population
Tagged attacks, christmas, conflicts, Eaten, facts, polar bear, predators, readers, review, young adults
The annual Arctic sea ice minimum for 2016 is imminent and the hand-wringing about polar bear survival has already begun. While this year is shaping up to be another very low sea ice minimum in the Arctic – not as low as 2012 but
lower than as low as 2007 (previously the 2nd lowest since 1979) – contrary to predictions, several recent studies show that such low sea ice coverage in summer has had no (or very limited) negative effects on polar bear health and survival. In fact, for polar bears in some areas low summer sea ice has been quite beneficial (although these are not the populations that polar bear specialists predicted would do better).
Since low summer extents of recent magnitude (3.0 – 5.0 mkm2) are clearly not any sort of threat to polar bears, it seems improbable that even an ice-free (≤ 1.0 mkm2) summer (e.g. Wang and Overland 2015) would be devastating to the species [don’t forget Cronin and Cronin 2016: they’ve survived such conditions before] – as long as conditions in spring allow for the necessary concentrated feeding on young seals.
Above: Top, minimum at 2012 (16 Sept, 3.41 mkm2, lowest since 1979); Center, 2007 (18 Sept, 4.17 mkm2); Bottom, 2015 (9 Sept, 4.50 mkm2), from NSIDC. Below: sea ice at 10 Sept 2016, 4.137 mkm2 – minimum not yet called).
Recall that in 2006, the IUCN Polar Bear Specialist Group based their conservation status of ‘vulnerable’ (likely to become threatened within the next 45 years due to reduced habitat) on the predictions of sea ice specialists (see 2008 update here).
Sea ice experts in 2005 predicted such low summer sea ice extents as polar bears have endured since 2007 (3.0 – 5.0 mkm2) would not happen until 2040-2070, at which time PBSG biologists said that >30% of the world’s bears would be gone.
Evidence to the contrary comes from polar bear specialists working in the Chukchi, Beaufort, and Barents Seas – and in Southern Hudson Bay – since 2007. Overall, the latest IUCN Red Book assessment (2015) put the global population size at 22,000-31,000 (or about 26,500).
All of this means that those polar bear experts were wrong: polar bears are more resilient to low summer sea ice conditions than they assumed.
Posted in Conservation Status, Population, Sea ice habitat
Tagged ACIA, arctic sea ice, Barents Sea, bearded seals, Beaufort Sea, body condition, Chukchi Sea, endangered, extinction, extirpation, facts, IUCN Polar Bear Specialist Group, NSIDC, polar bear, population size, predictions, productivity, ringed seals, sea ice, Southern Hudson Bay, summer ice minimum, survival, threatened