This is shaping up to be one of the shortest ice-free seasons in at least 20 years for both Western and Southern Hudson Bay polar bears.
Hudson Bay sea ice at 2 November 2020. NSIDC Masie chart.
Last week, sea ice started forming along the shore of Hudson Bay, from the north end all the way south into James Bay. So far, the shorefast ice that’s forming is only a narrow strip along the coast but is thickening and becoming broader each day, which means that unless something changes dramatically, the bears should all be on the ice at the end of the week, an exodus from shore that hasn’t happened this early in WH since 1993 (the earliest since 1979).
The last WH tagged polar bear didn’t leave the ice this year until 21 August, which means if it’s on the ice by the end of this week it will have spent only 11 weeks onshore – less than 3 months. Even the first bears that came ashore in mid-July will have only spent about 16 weeks on land – at least a month less than they did a decade ago (Stirling and Derocher 2012). Four months spent ashore was the historical average for Western Hudson Bay bears in the 1970s and 1980s (Stirling et al. 1977, 1999). This year, most polar bears will have spent only about 13-14 weeks on land because they did not come ashore until early August.
UPDATE 8 November 2020: Report from Churchill area polar bear guide Kelsey Eliasson, via Facebook Saturday 7 November: “Most bears have left on the ice – including peanut – but still some stragglers” [‘Peanut’ is a well-known female who has two cubs this year]. See below for sea ice chart for 8 November shows broadening band of grey ice clearly thick enough to support the weight of adult bears (and the same thing is happening in Southern Hudson Bay):
Posted in Conservation Status, Life History, Population, Sea ice habitat
Tagged breakup, Churchill, computer models, freeze-up, future, Hudson Bay, ice-free season, polar bear, predictions, sea ice
Contrary to all expert expectations, five female polar bears (45%) out of eleven that had tracking collars attached last year were still out on the sea ice that’s lingering along the western shore of Hudson Bay as of 7 August. And if five collared bears are out there, then there are almost certainly many more without collars doing the same thing. This pattern of bears staying out on the ice long after the so-called ‘critical threshold’ of 50% concentration has passed has been going on since at least 2015 and many bears on tracking maps in July and August appear to be on ice that doesn’t exist.
There are two explanations for this pattern and both are likely true: 1) much more ice actually exists on Hudson Bay than satellites can detect and 2) polar bear experts are wrong that Western Hudson Bay polar bears head to land soon after sea ice concentration drops below 50%. Models that predict a catastrophic future for Western Hudson Bay polar bears (Castro de la Guardia et al. 2013; Molnar et al. 2020) assume that ice coverage of less than 50% in summer greatly reduces polar bear survival. However, if polar bears do not always head to land when sea ice drops below 50% then the models cannot possibly describe their future accurately. In other words, depending on the discredited ‘worst case’ RCP8.5 climate scenario for the most recent polar bear survival model that extrapolates from Western Hudson Bay bear data to many other subpopulations, as I discussed previously, may not be its only fault.
Posted in Conservation Status, Life History, Sea ice habitat
Tagged assumptions, behavioural plasticity, breakup, contradictions, extinction, Hudson Bay, melt ponds, polar bear, predictions, RCP8.5, sea ice, western hudson bay
Here I take a detailed look at sea ice and polar bear population health information available for Western Hudson Bay and the Southern Beaufort compared to the Barents and Chukchi Seas. Data from the first two regions – but especially Western Hudson Bay – are used repeatedly to proclaim that a pronounced decline in summer sea ice since 1979 has caused harm to the health of global polar bear populations even though data from the second two regions strongly contradict such a conclusion, as I’ve pointed out in my fully referenced book, The Polar Bear Catastrophe That Never Happened.
These contradictions mean that studies from Western Hudson Bay and the Southern Beaufort should not be used to extrapolate to the rest of the Arctic with regard to how polar bears are responding to reduced summer sea ice. The plea to ‘Save Our Sea Ice‘ for the sake of polar bear survival is a climate change marketing slogan, not a scientific assessment.
Posted in Advocacy, Conservation Status, Population, Sea ice habitat, Summary
Tagged advocacy, Arctic sea ice day, contradictions, loss of summer ice, marketing, polar bear, Polar Bears International, predictions, save our sea ice, sea ice
On this first anniversary of the publication of The Polar Bear Catastrophe That Never Happened, it’s a day of celebration for me. The book has informed thousands about how and why the scary stories about the imminent demise of polar bears due to human-caused global warming failed so miserably. It is a story of the triumph of facts over assumptions and a perfect example of why scientific observations trump model predictions. It is also a study of science at its worst: how a close-knit community of scientists groomed by a few senior researchers was able to cast out an insider who refused to tow the line on their climate change agenda – and mobilized mobs to attack outsiders who questioned their authority.
If you haven’t read it, now may be the perfect time. Many of you will be forced or encouraged to stay at home because of Covid-19 concerns, so here is one way to put the time to good use. Ebooks are perfect for this situation. If you don’t like Amazon, Smashwords has an ebook version here.
Smashwords also has an ebook version of my novel, EATEN. This polar bear attack thriller is a timely read for a number of reasons but primarily because it’s the story of an animal epidemic with horrific consequences quite different from the one we are facing at the moment.
My polar bear science book for kids, Polar Bear Facts and Myths in ebook form might be the perfect diversion for kids at home who need interesting educational material.
You’ll find links to all of my books, in all countries and all outlets, at my personal website here.
Posted in Advocacy, Conservation Status, Life History, Polar bear attacks, Population, Summary
Tagged catastrophe, ebooks, epidemic, extinction, models, polar bear, population, predictions, science, sea ice, thriller, winter
Google says many people ask this question so here is the correct answer: polar bears are not going extinct. If you have been told that, you have misunderstood or have been misinformed. Polar bears are well-distributed across their available habitat and population numbers are high (officially 22,000-31,000 at 2015 but likely closer to 26,000-58,000 at 2018): these are features of a healthy, thriving species. ‘Why are polar bears going extinct?’ contains a false premise – there is no need to ask ‘why’ when the ‘polar bears [are] going extinct’ part is not true.1
Posted in Conservation Status, Population
Tagged answers, estimates, extinct, facts, how many polar bears are left, IUCN Red List, polar bear, predictions, science, why are polar bears going extinct
Misplaced eco-anxiety that kids have about polar bears starts with activist biologists like Steven Amstrup, spokesperson for an organization devoted to raising climate change alarm – and media outlets like The Guardian who help them spread fears unsupported by scientific evidence.
Fat healthy polar bear male at Kaktovik, Alaska in the Southern Beaufort Sea, September 2019, Ed Boudreau photo, with permission.
You can’t get much more over the top than these statements from Amstrup today but read carefully: it’s either opinion or factual aspects of polar bear life (“we know that the bears aren’t feeding”) made to sound like new, terrifying developments that can be blamed on climate change. Continue reading
Posted in Advocacy, Conservation Status, Life History, Population, Sea ice habitat
Tagged Alaska, Amstrup, Beaufort, catastrophe, Chukchi Sea, eco-anxiety, polar bear, Polar Bears International, population decline, predictions, sea ice, shrinking sea ice
Young activists like Ollie Nancarrow from the UK need to find another symbol for their messages of climate change. Polar bears are thriving despite recent dramatic declines in summer sea ice: they have not been devastated as predicted by declining summer sea ice blamed on climate change. Anyone who uses a polar bear image to further a message of climate change, as Ollie has done, is simply out of touch with reality.
UPDATE 4 June 2019: Police instruct activist teen to remove ‘rude’ message from UK field. He turned the penis into a turtle but apparently, the polar bear remains.
Posted in Advocacy, Conservation Status, Population, Sea ice habitat
Tagged activists, catastrophe, facts, Ollie Nancarrow, polar bear, population size, predictions, sea ice, state visit, Trump
A campaign by an anti-hunting Norwegian photographer to destroy the market for legally-hunted polar bears in Canada makes a few disturbingly false claims and an article at National Geographic in which he is quoted further distorts the picture of polar bear conservation. I understand that some people object to hunting and wish more people felt like they do – but this sort of argument is unlikely to sway any but the most gullible.
Norwegian photographer Ole Liodden apparently has a master’s degree in “nature management and environmental policy“. He takes fabulous polar bear pictures (I purchased one of them, above, for the cover of my novel, EATEN) but his crusade to ban hunting and trade in polar bear products world-wide has lead him to misrepresent essential facts, which is no way to win an argument. A National Geographic writer and several polar bear specialists have provided additional spin and used it as an excuse to promote their failed prophesies that polar bears are doomed: “Should polar bear hunting be legal? It’s complicated” (28 May 2019).
Posted in Advocacy, Conservation Status, hunting, Polar bear attacks, Sea ice habitat
Tagged Amstrup, anti-hunting, CITES, evolution, hunting, international trade, Inuit, Liodden, natural selection, observations, polar bear, predictions, sea ice, sustainable
This 10 minute television interview aired a few hours ago on The Bolt Report (Sky News Australia, 26 March 2019). A short excerpt was made available as a tweet but a link to the full length podcast is below.
Ironically, despite the huge effort made by polar bear specialists and climate change activists to silence and discredit me over the last year or so, all it’s done is made more people willing to listen to what I have to say. My new book is selling phenomenally well and getting great reviews: if you haven’t ordered your ebook or paperback copy, you can do so here.
Posted in Book review, Polar bear attacks, Population, Sea ice habitat, Summary
Tagged book, catastrophe, estimates, interview, media, numbers, podcast, polar bear, population, predictions, sea ice, TV