Archives par mot-clé : Polar bears

Susan Crockford: State of the Polar Bear Report 2023 (pdf)

by S. Crockford, 2023


Key Findings
* There were no reports from the Arctic in 2023 indicating polar bears were being harmed due to lack of summer sea ice habitat, in part because Arctic sea ice in summer has not declined since 2007. 
 
* Contrary to expectations, a study in Svalbard found a decrease in polar bears killed in defense of life or property over the last 40 years, despite profound declines in sea ice over the last two decades. 
 
* A survey of Southern Hudson Bay polar bears in 2021 showed an astonishing 30% increase over five years, which adds another 223 bears to the global total. 
 
* A concurrent survey of Western Hudson Bay polar bears in 2021 showed that numbers had not declined since 2011, which also means they have not declined since 2004. Movement of bears across boundaries with neighbouring subpopulations may account for the appearance of a decline, when none actually occurred. 
 
* The IUCN Polar Bear Specialist Group has ignored a 2016 recommendation that the boundaries of three Hudson Bay subpopulations (Western HB, Southern HB, and Foxe Basin) be adjusted to account for genetic distinctiveness of bears inhabiting the Hudson Bay region; a similar boundary issue in the western Arctic between the Chukchi Sea, and the Southern and Northern Beaufort subpopulations, based on known movements of bears between regions, has been acknowledged since 2014 but has not yet been resolved. 
 
* The US Fish and Wildlife Service and the IUCN Polar Bear Specialist Group, in their 2023 reports, failed to officially acknowledge the new-found South-East Greenland population as the 20th subpopulation, despite undisputed evidence this is a genetically distinct and geographically isolated group. Numbers are estimated at 234 individuals.

When polar bears die, they die of starvation: new Nature paper is propaganda, not news

by S. Crockford, Feb 13, 2024 in PolarBearScience


Is it a coincidence that a paper reporting the results of a no-news study on polar bears, but which predicts future starvation due to climate change, was published two weeks to the day ahead of a climate change marketing event made up by the activist organization Polar Bears International? I doubt it.

And do I think the high-profile journal Nature Communications would not only agree to publish such a useless bit of propaganda but also rig the timing to advance the climate change emergency narrative? Silly question. And the media worldwide are of course lapping it up, happy for an excuse to promote the perils of climate change, see here, here, and here using images of fat polar bears. Image above is from the BBC headline, 13 February 2024.

They believe this strategy is effective because they think the public is stupid, but they are deluding themselves. Most people are now laughing at their obvious acts of desperation.

Polar bears are highly specialize for consuming large amounts of fat that they get from Arctic seals, whales, and walrus. Only a few vocal researchers outside main-stream polar bear science insist that polar bears could ever survive year-round by eating terrestrial foods (e.g., Ilses et al. 2013; Iverson et al. 2014; Gormezano and Rockwell 2013a,b; Prop et al. 2015; Rogers et al. 2015; Tartu et al. 2016).

‘Less ice means more conflicts with polar bears’ narrative not supported by scientific evidence

by S. Crockford, Apr 18, 2023 in WUWT

 

In another failed prediction, a new study on the number of polar bears killed in self-defense in Svalbard, Norway did not find the expected correlation with lack of sea ice or more tourists (Vongraven et al. 2023). Contrary to expectations, fewer bears were actually killed in self-defence as sea ice declined between 1987 and 2019.

Money Quote from the abstract:

…ice cover had no significant impact on the odds for a [polar bear] kill.”

It seems the warning from polar bear specialist Andrew Derocher a few months ago was just plain wrong:

“Poor ice conditions for polar bears at Svalbard this year. Low ice will make tough hunting conditions this coming spring. Time to plan for more human-bear conflicts unless conditions change.” [13 Feb 2023 tweet, my bold]

From the Discussion section of the Vongraven paper (pg. 9), my bold:

More bears on land for longer periods during which more people were accessing the same habitats could have been expected to increase the number of bear-human interactions, and the number of bears killed in defence of life and property. Despite a positive relationship between number of tourists and number of kills at a given time, the total numbers of bears killed did not increase over the years of the study and per-capita kills strongly declined. … This overall reduction in kills, despite greatly reduced sea ice habitat availability and more polar bears spending more time on land, may reflect success of the Svalbard Environmental Act of 2001.”

Nice save there, at the end. Hey, this wasn’t a failure of our prediction that loss of sea ice due to global warming would cause more polar bears to be killed because they attacked people, it’s a resounding victory for a law prohibiting people “seeking out” polar bears! As noted in the next two sentences:

Attenborough’s Arctic Sea-Ice Fearmongering Bordering On Misinformation

by C. Morrison, Sep 13, 2022 in ClimateChangeDispatch


The Arctic has been a happy hunting ground for the climate scaremonger Sir David Attenborough. Two years ago he made the fanciful claim that polar bears could die out in the 2030s.

It is now generally accepted that polar bears have been thriving and increasing in numbers, and in his latest BBC documentary Frozen Planet II, Attenborough makes no mention of his previous claim. [bold, links added]

But he does make the astonishing suggestion that all the summer sea ice in the Arctic could be gone within 12 years.

Unfortunately, such predictions are now out of date. Summer sea ice hit a low in 2012 and has been steadily recovering ever since.

According to the latest data from the US-based National Snow and Ice Data Center (NSIDC) for the end of August, “Sea ice extent is likely to remain higher than in recent years.

The evidence is shown in the graph below.

….

As can be clearly seen, the 2022 blue line is well above the 2012 low point. According to the NSIDC, the average sea ice extent for August ranked 13th lowest in the recent satellite record.

The growth of Arctic sea ice has been confirmed by a number of sources. The EU weather service Copernicus reported that the coverage of Arctic sea ice is now very close to the 1991-2020 average.

Polar Opposite: Polar Bears Require Thin Ice Or Open Water To Survive

by K. Richard, Sept 5, 2022 in NoTricksZone


Abundant polar bear remains dating to 8000 to 9000 years ago have been found on Zhokhov Island, which is today surrounded by year-round sea ice (even in summer). This Arctic latitude (76°N) is too cold and thus too ice-covered for polar bears to inhabit today.

During the Early Holocene CO2 concentrations ranged between 255 to 265 ppm, and yet the Arctic was 5-7°C warmer than it is today and many regions that are now sea ice-covered were sea ice-free.

For example, Zhokhov Island is tundra and treeless today. It’s surrounded by permanent sea ice, making it inaccessible to wildlife.

Sea ice average for March is the metric used to compare to previous winters

by S. Crockford, Apr 5, 2022 in PolarBearScience


The average sea ice cover at the end of March is the metric used to compare ‘winter’ ice to previous years or decades, not the single-day date of ‘most’ ice. This year, March ended with 14.6 mkm2 of sea ice, most of which (but not all) is critical polar bear habitat. Ice charts showing this are below.

But note that ice over Hudson Bay, which is an almost-enclosed sea used by thousands of polar bears at this time of year, tends to continue to thicken from March into May: these two charts for 2020 show medium green becoming dark green, indicating ice >1.2 m thick, even as some areas of open water appear.

Promoters of polar bear catastrophe in Hudson Bay gloss over recent good ice conditions

by S. Crockford, Dec 8, 2021 in PolarScience


Hudson Bay has been oddly slow to freeze this year, which has led to a predictable bit of hand-wringing from certain biologists reiterating prophesies of polar bear population collapse. However, since 2009, the last time that freeze-up was anywhere near this late was 2016. In other words, far from this years’ late freeze-up being a picture of ‘the new normal,’ conditions in 2021 are actually unusual compared to the last twelve years.

Perhaps the last bear leaving Cape Churchill for the sea ice, 4 December 2021.

Moreover, considering that 2021 fall ice formation for the Arctic in general is well ahead of 2016 (and every year since, except 2018), it’s hard to see why human-caused global warming caused by ever-increasing CO2 emissions explains the slow freeze-up of Hudson Bay. Timing of Hudson Bay freeze-up has always been highly variable from one year to the next (Castro de la Guardia et al. 2017: Fig. 3, copied below). The average freeze-up date in the 1980s was 16 November ± 5 days, while from 2005-2015 this had shifted about a week to 24 November ± 8 days (Castro de la Guardia et al. 2017:230). This year freeze-up was later than usual but last year and the three years before that the ice froze as early as it did in the 1980s. Cue the zombie apocalypse.

No signs of a climate emergency for W. Hudson Bay polar bears this year ahead of UN climate meeting

by  S. Crockford’s Polar Bear Science, Oct 17, 2021 in WUWT


Reposted from Dr. Susan Crockford’s Polar Bear Science

By Susan Crockford,

Posted on October 15, 2021 | Comments Offon No signs of a climate emergency for W. Hudson Bay polar bears this year ahead of UN climate meeting

I’ve been told that another complete aerial survey of the Western Hudson Bay polar bear subpopulation (from the Nunavut to Ontario boundaries) was conducted in August this year and that the bears have been hanging out further south than usual. It will be years before the results of the population count are published, of course (especially if it’s good news) but my contacts also say virtually all of the bears are in great condition again this year.

This is significant because W. Hudson Bay bears are one of the most southern subpopulations in the Arctic (only Southern HB bears live further south) and older data from this region is being used to predict the future for the entire global population based on implausible model projections (Molnar et al. 2020). And scary predictions of future polar bear survival are often taken to be proxies for future human disasters (see ‘Polar bears live on the edge of the climate change crisis‘), a point that some activists will no doubt make in the coming weeks, as the long-awaited UN climate change bash #26 (COP26) gets underway in Glasgow, Scotland on October 31.

Wandering polar bears are the new starving polar bears, falsely blamed on climate change

by Polar Bear Science, May 15 , 2021


Back in 2017, we famously had National Geographic falsely blaming a starving polar bear on climate change but since then we have been inundated (relatively speaking) with stories of ‘wandering’ bears sighted far from Arctic coastlines. These wandering bears are oddities to be sure but are not in any way an indicator of melting Arctic sea ice or lost habitat, as The Times (UK) has claimed in this latest example (Polar bear treks 1,500 miles south as Arctic hunting zone melts away).

STATE OF THE POLAR BEAR REPORT 2020

by S. J. Crocfkord, Report 2020 in GWPF


Report 40, The Global Warming Policy Foundation

Preface v Executive summary vi

ISBN 978-1-9160700-7-3
© Copyright 2020, The Global Warming Policy Foundation

  1. Introduction 1
  2. Conservation status 1
  3. Population size 2
  4. Population trends 10
  5. Habitat status 11
  6. Prey base 15
  7. Health and survival 17
  8. Evidence of flexibility 22
  9. Human/bear interactions 23
  10. Discussion 28

Bibliography 30 About the Global Warming Policy Foundation

Not a myth: State of the Polar Bear Report shows 2020 was another good year for polar bears

by C. Rotter Feb 27, 2021 in WUWT


The ‘State of the Polar Bear Report 2020’ is now available. Forget hand-wringing about what might happen fifty years from now – celebrate the fabulous news that polar bears had yet another good year.

Press release from the Global Warming Policy Forum

 

Cite as:

Crockford, S.J. 2021. The State of the Polar Bear Report 2020. Global Warming Policy Foundation Report 48, London.

London, 27 February: A prominent Canadian zoologist says that Facebook’s information is gravely out of date and 2020 was another good year for polar bears.

In the State of the Polar Bear Report 2020, published by the Global Warming Policy Foundation (GWPF) on International Polar Bear Day, zoologist Dr. Susan Crockford explains that while the climate change narrative insists that polar bear populations are declining due to reduced sea ice, the scientific literature doesn’t support such a conclusion.

Crockford clarifies that the IUCN’s 2015 Red List assessment for polar bears, which Facebook uses as an authority for ‘fact checking’, is seriously out of date. New and compelling evidence shows bears that in regions with profound summer ice loss are doing well.

Included in that evidence are survey results for 8 of the 19 polar bear subpopulations, only two of which showed insignificant declines after very modest ice loss. The rest were either stable or increasing, and some despite major reductions in sea ice. As a result, the global population size is now almost 30,000 – up from about 26,000 in 2015.

Dr. Crockford points out that in 2020, even though summer sea ice declined to the second lowest levels since 1979, there were no reports of widespread starvation of bears, acts of cannibalism, or drowning deaths that might suggest bears were having trouble surviving the ice-free season.

Polar bear sea ice habitat highs and lows in early February

by Polar Bear Science, Feb 10, 2021


Sea ice across the Arctic in the first week of February is a mix of highs and lows. Bering Sea is back up to almost normal coverage, as is the Barents Sea. However, ice coverage on the East Coast of Canada is the lowest its been in four decades. This is not yet a worry for polar bears because harp seals don’t pup until mid-March in this region so there is at least four weeks of potential ice growth that can happen before the seals are forced to pup on much reduced ice – where polar bears are sure to find them.

More food for Polar Bears: Arctic report card 2020 highlights the huge benefit of less summer sea ice

by Polar Bear Science, Jan 8, 2021 in WUWT


As well as summarizing sea ice changes, NOAA’s 2020 Arctic Report Card features two reports that document the biggest advantage of much less summer sea ice than there was before 2003: increased primary productivity. Being at the top of the Arctic food chain, polar bears have been beneficiaries of this phenomenon because the Arctic marine mammals they depend on for food – seals, walrus and bowhead whales – have been thriving despite less ice in summer.

In the sea ice chapter (Perovich et al. 2020), my favourite of all the figures published is the graph of September vs. March sea ice (above). As you can see, March ice extent has been virtually flat (no declining trend) since 2004. And as the graph below shows, September extent has been without a trend since 2007, as NSIDC ice expert Walt Meier demonstrated last year (see below): it doesn’t take much imagination to see that the value for 2020 from the graph above (the second-lowest after 2012) hasn’t changed the flat-trend line.

Polar bears again attracted to Russian town by dead walrus Attenborough blames on no sea ice

by Polar Bear Science, Dec 20, 2020


In the news again: Cape Schmidt (on the Chukchi Sea) made famous by Sir David Attenborough’s false claim that walrus fell to their deaths because of lack of sea ice due to climate change when a clever polar bear hunting strategy was actually to blame.

Last year in December (above), some bears were feeding at Ryrkaypiy’s garbage dump and wandering around town after being displaced from feeding on walrus carcasses by bigger, stronger bears on the nearby point.

This year, the town has managed to keep the bears out of town, so while the residents are having no real problems, more than 30 bears have been spotted near town, almost certainly feeding on natural-death carcasses of walrus along the shore (see photo below from 2017 where Ryrkaypiy can be seen in the background).

 

Ten fat polar bears filmed raiding a stalled Russian garbage truck

by Siberian Times, Oct 21, 2020 in WUWT/Ch.Rotter


From the Siberian Times today (20 October) is a story with few facts but a fabulous video of six fat adults and four fat cubs as they set siege to a stalled open garbage truck in the Russian Arctic. It may have been filmed on Novaya Zemlya but that has not been confirmed.

Of course, Novaya Zemlya has had previous problems with bears habituated to garbage, most famously an extended incident in 2019 that was perversely blamed on climate change.

There were two families that I could see in the video: a female with two cubs-of-the-year and another with two year old cubs. All were in excellent condition, as were the other four adults. Novaya Zemlya, if indeed this is where the incident took place, is between the Barents and Kara Seas (see below):

 

A Geological Perspective of Polar Bears

by D. Middelton, Oct 11, 2020 in WUWT


Estimates have ranged from 70,000 to 5,000,000 years ago. The oldest confirmed polar bear fossil dates to 110,000 to 130,000 years ago… Meaning that polar bears survived the Eemian interglacial stage.

The peak warmth of the Eemian interglacial stage marks the boundary between the Late Pleistocene Tarantian Age and the Middle Pleistocene Ionian Age.

Sceptical covid-19 research and sceptical polar bear science: is there a difference?

by Polar Bear Science, September 6, 2020


This essay about medical researchers having trouble getting their papers published because the results don’t support the official pandemic narrative has disturbing parallels with my experience trying to inject some balance into the official polar bear conservation narrative.1 Especially poignant is the mention of models built on assumptions sold as ‘facts’ that fail once data (i.e. evidence) become available – which of course is the entire point of my latest book, The Polar Bear Catastrophe That Never Happened.

Read the commentary below, copied from Lockdownsceptics.org (6 September 2020). Bold in original, link added to the story to which this is a response, and brief notes and links added as footnotes for parallels with polar bear conservation science.

Latest Polar Bear Scare Shredded By Susan Crockford

by P. Homewood, July 22, 2020 in NotaLotofPeopleKnowThat


Apparently, a prediction that polar bears could be nearly extinct by 2100 (which was first suggested back in 2007) is news today because there is a new model. As for all previous models, this prediction of future polar bear devastation depends on using the so-called ‘business as usual’ RCP8.5 climate scenario, which has been roundly criticized in recent years as totally implausible, which even the BBC has mentioned. This new model, published today as a pay-walled paper in Nature Climate Change, also did something I warned against in my last post: it uses polar bear data collected up to 2009 only from Western Hudson Bay – which is an outlier in many respects – to predict the response of bears worldwide. The lead author, Peter Molnar, is a former student of vocal polar bear catastrophist Andrew Derocher – who himself learned his trade from the king of polar bear calamity forecasts, Ian Stirling. Steven Amstrup, another co-author of this paper, provided the ‘expert opinion’ for the failed USGS polar bear extinction model featured in my book, The Polar Bear Catastrophe That Never Happened.

Well, these authors and their supporters got the headlines they crave, including coverage by outlets like the BBC and New York Times (see below) but I have to say that the combination of using out-of-date Western Hudson Bay information on when polar bears come ashore in summer and leave for the ice in fall (only to 2009) to make vague projections (‘possible’, ‘likely’, ‘very likely’) about all other subpopulations in addition to depending on the most extreme and now discredited RCP8.5 climate scenario (Hausfather and Peters 2020) for this newest polar bear survival model is all that’s needed to dismiss it as exaggerated-fear-mongering-by-proxy. Why would anyone believe that the output of this new model describes a plausible future for polar bears?

Meanwhile, polar bear populations worldwide continue to thrive despite declines in sea ice. And as I have pointed out on numerous occasions, the ice free period for WH has not continued to decline since 1998 but rather has remained stable (with yearly variation) at about 3 weeks longer than it was in the 1980s (Castro de la Guardia et al 2017). Moreover, for the last five years at least, including this one, the ice-free season for WH bears has been better (only 1-2 weeks longer than the 1980s), although no official data on this phenomenon has yet been published. Oddly, this more recent data for Hudson Bay was not used for the Molnar model.

 

Susan’s full account is here.

10 fallacies about Arctic sea ice & polar bear survival refute misleading ‘facts’

by S. Crockford, July 8, 2020 in WUWT


This updated blog post of mine from last year is as pertinent now as it was then: it’s a fully-referenced rebuttal to the misleading ‘facts’ so often presented this time of year to support the notion that polar bears are being harmed due to lack of summer sea ice. Polar Bears International developed ‘Arctic Sea Ice Day’ (15 July) to promote their skewed interpretation of polar bear science at the height of the Arctic melt season. This year I’ve add a ‘Polar Bears and the Arctic Food Chain‘ graphic, which readers are free to download and share. For further information, see “The Polar Bear Catastrophe That Never Happened“.

Why are polar bears going extinct? (Spoiler: They’re not)

by S. Crockford, February 24, 2020 in WUWT


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

mother-with-cubs-russia_shutterstock_71694292_web-size-e1582489285608

It is true that in 2007, it was predicted that polar bear numbers would plummet when summer sea ice declined to 42% of 1979 levels for 8 out of 10 years (anticipated to occur by 2050) and extinct or nearly so by 2100 (Amstrup et al. 2007). However, summer sea ice has been at ‘mid-century-like’ levels since 2007 (with year to year variation, see NOAA ice chart below) yet polar bear numbers have increased since 2005. The anticipated disaster did not occur but many people still believe it did because the media and some researchers still give that impression.

Polar bear habitat at mid-winter as extensive as 2013 & better than 2006

by S. Crockford, February 14, 2020 in PolarbearScience


Arctic sea ice at the middle of winter (January-March) is a measure of what’s to come because winter ice is the set-up for early spring, the time when polar bears do most of their feeding on young seals.

[Mid-winter photos of polar bears are hard to come by, partly because the Arctic is still dark for most hours of the day, it’s still bitterly cold, and scientists don’t venture out to do work on polar bears until the end of March at the earliest]

At 12 February this year, the ice was similar in overall extent to 2013 but higher than 2006.

2019 Alaska aerial survey found the most polar bears since 2012 – dozens of fat healthy bears

by Polar Bear Science, January 12, 2020 in WUWT


This aerial shot of six fat polar bears lolling around on a sand beach on the coast of the Southern Beaufort Sea, Alaska, was taken by NOAA employees in July 2019. It exemplifies the reality that bears in this subpopulation are currently abundant and healthy, negating the suggestion that numbers have continued to drop since 2006 because bears are starving.

The above picture of polar bear health is not an exception but the rule for all 31 bears recorded onshore last July, as the photos below from other locations testify. Those who would blame this abundance of bears on lack of sea ice in 2019 should note that ice retreated as early and as extensively in 2017 yet only 3 bears were spotted onshore. Results of a recent (2017-2018) population survey, which have not yet been made public, will of course not reflect conditions seen in 2019.

WH’S “POLAR BEAR VIEWING SEASON” ENDS EARLY FOR THE THIRD YEAR IN A ROW BECAUSE OF TOO MUCH ICE!

by Cap Allon, November 19, 2019 in Electroverse


2019 is now the third year in a row in which the refreezing of Western Hudson Bay (WH) ice has come earlier than the 1980s average date of November 16, as reported by polarbearscience.com.

Livecams over at explore.org have confirmed a key indicator that the ice is back — the polar bears of WH have begun their winter trek back onto the bay.

The redeveloping sea ice may be good news for the bears, but it’s bad for tourists — after a short five months with the Sailors of the Floe on land, their departure now means the ‘polar bear viewing season’ in Churchill, Manitoba, is ending early, just as it did last year, and the year before. In fact, on the back of what have been five good sea ice seasons in succession for WH polar bears, this year’s repeat of an early freeze-up means a sixth good ice season is now likely for 2019-2020 — less kerching for the region.

WWF Apologizes Over Doctored Polar Bear Image In Climate Campaign

by Uutiset, October 8, 2019 in ClimateChangeDispatch


Environmental NGO WWF Finland has apologized for using a retouched photo of a polar bear and cub standing on a tiny ice floe, apparently adrift in an ocean.

However, the organization’s communications head, Anne Brax, also defended the use of the image as an advertising tool commonly used as shorthand for climate change and its impact on arctic regions, rather than as a news item.

The photo was used as part of an anti-climate change fundraising campaign aimed at students participating in Finland’s annual “taksvärkki” or “day’s work” program, where middle schoolers work for a day to collect money for worthy causes.

The image used in the campaign was originally shot by nature photographer Steven Kazlowski and depicts a polar bear and a cub. In the original photo, however, the polar bears are set against an icy landscape with no ocean in sight.

Alongside the manipulated image used in the WWF Finland campaign is the text “sulaa hulluutta kun ilmasto lämpenee”, which roughly translated means “pure madness as the climate warms”, with a play on the word “sulaa”, which also means “to melt” in Finnish.

WWF Finland: “We Made A Mistake”

No climate emergency for polar bears or walrus means no climate emergency period

by Charles the moderator, Sep. 23, 2019 in WUWT


We are told the Arctic is warming twice as fast as anywhere else in the world, yet as the internet reverberates with shrill, almost-the-lowest-ice-extent-ever stories, polar bears, Pacific walrus, and the most common ice seal species (ringed and bearded seals, as well as harp seals), are all thriving.  Two new videos published by the GWPF on polar bears and walrus confront this conundrum and the conclusion is clear: if there is no climate emergency for polar bears, there is no climate emergency anywhere.

Polar bears have survived several periods of less ice than there is now as well as periods with more ice. Most ice seal species and walrus, which have existed in the Arctic much longer than polar bears, have lived through many of these extreme sea ice cycles. The low ice extent this year – whether it ends up being second-lowest or third-lowest since 1979 – is merely a blip compared to what these species have experienced during the Pleistocene.

This new video explains that polar bears are important ecosystem indicators that are taking reduced summer sea ice in their stride. My new book, The Polar Bear Catastrophe That Never Happened, explains why this has caught polar bear specialists off guard.