Activist polar explorer Børge Ousland’s told National Geographic that more polar bear encounters on land are due to reduced sea ice – without any reference to population changes over that time or revealing when or where these observations were made.
More vague anecdotal observations and opinions posing as scientific evidence.
Continue reading
Comments Off on Activist explorer blames more polar bear encounters since 1985 on reduced sea ice
Posted in Advocacy, Population, Sea ice habitat
Tagged activist, climate change, encounters, explorer, glaciers, Ice Legacy, Kara Sea, National Geographic, polar bear, population size, problem bears, sea ice, Severnaya Zemlya
Latest report on problem bears in Churchill, Manitoba, from the town’s Facebook page. See previous post here for map and background. Last week’s report here.
Photo above: A bear is transported to Churchill’s polar bear holding facility (from a 2011 Huffington Post article, “Polar Bear Prison”).
22 polar bears handled to date this year; 15 bears in the holding facility this week. See also last post on Polar Bear Town – a new TV reality show about Churchill polar bears.
Polar Bear Alert Program Activity Report as of Sep 21 (click to enlarge):
Comments Off on Churchill problem polar bear report for 14-20 September 2015
Posted in Polar bear attacks
Tagged alert, Churchill, polar bears, problem bears, sea ice
This was kind of fun – featuring the Churchill polar bear guiding trials and tribulations of PolarBearAlley’s Kelsey Eliasson, Dennis Compayre, Brian Ladoon, which premiered Tuesday 22 September in Canada and the US. Supposedly, you can watch online episodes that have aired already (wouldn’t work for me).
This is a ‘reality’ TV series, not a documentary. It won’t be to everyone’s taste. But by focusing on independent polar bear guides, you see the bears in their element (and the goings-on in the town) without the constant lectures about global warming and predictions that the bears are all going to die that are, I understand, a feature of Tundra Buggy tours operated by the largest outfit, Frontiers North, due to its partnership with Polar Bears International, a strongly activist organization that many polar bear biologists belong (including Steven Amstrup, Ian Stirling, Andrew Derocher, former WWF employee Geoff York).
So far, anyway – perhaps the lectures are to come? YouTube Trailer below.
UPDATED 29 September 2015: OLN has posted the first episode on Youtube, copied below.
Continue reading
Comments Off on Polar Bear Town – Churchill bear stories on TV without gloom and doom propaganda
Posted in Book review, Life History
Tagged Churchill, Compayre, Eliasson, guides, Ladoon, polar bear, review, tundra buggy, TV
At the seasonal minimum 2015, the Arctic Basin was still almost full of sea ice, down only 0.3 mkm2 below the maximum it could ever be.
Remember that spending the summer in the Arctic Basin for most polar bears is just like sitting on the western shore of Hudson Bay – they are all waiting for the refreeze. In either location, they might find something to eat, they might not.
Below are NSIDC MASIE sea ice maps for 10 April 2015 (as big as it gets, basin filled) vs. 17 September 2015: Continue reading
Comments Off on Summer refuge for polar bears in Arctic Basin only 0.3 mkm2 below its possible maximum
Posted in Conservation Status, Sea ice habitat
Tagged Arctic basin, Beaufort, body condition, Chukchi, mimimum, polar bear, Refuge, summer
Conditions this year (2015) in the Barents Sea were excellent according to the polar bear researchers who work there (“Polar bears were as fat as pigs”).
A new survey just completed for a population count showed the bears were are in excellent condition – except the injured ones, of course, which some news organizations are promoting as evidence of harm from global warming-induced sea ice changes because an activist photographer – not scientists – said so.
Comments Off on Barents Sea polar bears in excellent condition say Norwegian biologists
Posted in Advocacy, Population, Sea ice habitat
Tagged Aars, advocacy, Andersen, arctic sea ice, Barents Sea, body condition, climate change, emaciated, fat, global warming, good news, injured, Langenberger, old, photographer, pigs, polar bear, sick, Svalbard, viral, York
Latest report on problem bears in Churchill, Manitoba, from the town’s Facebook page. See previous post here for map and background.
19 polar bears handled to date this year; 12 bears in the holding facility.
Photo above: A bear is transported to Churchill’s polar bear holding facility (from a 2011 Huffington Post article, “Polar Bear Prison”).
Activity report for 7-14 September 2015 copied below (click to enlarge):
Comments Off on Churchill problem polar bear report for 7-13 September 2015
Posted in Polar bear attacks, Sea ice habitat
Tagged Churchill, conservation, holding facility, jail, onshore, polar bear, problem
Polar bear habitat in the Arctic Basin this year appears to have reached its apex days earlier than average. As of 12 September, freeze-up of Arctic sea ice had begun. Unless something dramatic happens over the next few days, this will make 2015 the earliest September minimum since at least 2007, using NSIDC data.1
The two lowest September ice extents (2007 and 2012) were also both later than average; this year’s minimum is the fourth lowest (see chart below).
Of course, all this fuss about how low the September minimum gets is irrelevant to polar bears: they are either on land or in the Arctic Basin, and virtually all are living off stored fat no matter where they are (see Arctic Basin bear here). What matters is when the refrozen ice reaches pregnant females that have preferred denning spots onshore (like in Svalbard) or for bears onshore waiting to return to the ice to hunt (like Davis Strait, and Western and Southern Hudson Bay bears). We won’t know that until October (for Svalbard) or November (for E. Canada).
Again, no sea ice death spiral or polar bears in peril because of it.
UPDATE 15 September 2015, 11:00 am PDT: Just published at the NSIDC website, 2015 minimum has been (tentatively) called at 4.41 mkm2, confirming my figure taken from their interactive graph (see below). However, despite the fact that their own data show that sea ice extent stayed at that value for three days, NSIDC has chosen the last day of that 3-day period rather than the first to represent the 2015 minimum. Go figure. That makes 2015 tied with 2011 for the earliest date for their official records, which seems more than a little self-serving and means I’m not changing the title of my post. NSIDC have also modified slightly some of the official extent figures for past minimums (added below) but it doesn’t really change anything.
Continue reading
Comments Off on September minimum 2015 looks like the earliest end of Arctic melt season since 2007
Posted in Sea ice habitat
Tagged Arctic, death spiral, fast, freeze-up, habitat, MASIE, melt, minimum, NSIDC, polar bear, sea ice, September, summer
So, I guess they didn’t all die because of lack of sea ice in the Chukchi Sea. I said back on 28 August, just after the some unauthorized photos were publicized, that this haulout looked just as large as last year’s, if not larger (walruses are occasional prey of polar bears).
Now confirmed by an official US Fish and Wildlife Service estimate of 35,000 – not 36,000 mind you, or 34,000 – it was definitely 35,000. Odd, that. And surprisingly, they didn’t bother going out to count them until the day President Obama came to town. Would FWS have even bothered to get a count if there hadn’t been something newsworthy to tie it to?
Even more strange is the fact that this year, there was no accompanying hype. There were no links in any of the stories to FWS or USGS propaganda website pages, like there were last year (nor even a link to a press release). No mention of the FWS plan to have walruses declared ‘threatened with extinction‘ because of global warming. And no mention of prosecution of the photographer who took the photos on 23 August, from the required distance, but without a permit. Note the permit number stamped on the official NOAA photo provided below (taken 2 September 2015), which few outlets carried, probably because it looks nothing like a photo of walruses on a beach:
It appears that this year 35,000 walruses on a beach is a non-story. Go figure. Excerpts from the one, widely-circulated story below, from three days ago. See previous post for more walrus background, map, and video.
Continue reading
Comments Off on Pacific walrus herd hauled out in Alaska during August was as large as last year’s
Posted in Life History, walrus
Tagged Alaska, Chukchi Sea, haul out, haulout, hype, Point Lay, prey, sea ice, threatened, walrus
Via Mashable yesterday: “Global warming may have led to the death of this polar bear, researcher says” Note this is about a death that occurred last year (2014), but Mashable author Andrew Freedman implies it happened this year.
The polar bear death occurred last year in Svalbard in the Barents Sea after a fall (2013) and winter (2014) of poor ice conditions due to well-known cyclical sea ice and weather patterns (not global warming). There is no doubt that 2014 was an unusually bad year for sea ice around Svalbard during the fall and winter. This year, however, conditions improved markedly: Norwegian researchers earlier this year reported a good crop of females with cubs this spring, many more than last year (see previous post “Many polar bears cubs seen in Svalbard this year, says Norwegian biologist”).
The photo above was taken by National Geographic photographer Paul Nicklan, who sent the instagram on 6 September 2015, with a photo and comments about a trip he’d taken to Svalbard in 2014.
Yet the Mashable article says the photo was taken “in recent days” and includes some quotes from Ian Stirling suggesting that the death relates to low summer sea ice and makes no mention of the fact that condition this year were excellent from fall 2014 through at least early July 2015 (see sea ice map below).
I guess if sea ice won’t cooperate and cause polar bears to die this year, it’s OK to use last years’ deaths instead and imply this year was just as bad. Oh, and none of them mention that starvation is the leading cause of death for all polar bears and always has been.
UPDATE 9 September 2015:Mashable’s Andrew Freedman has amended his article:
“UPDATED 9:10 a.m. ET: This story was updated to indicate that Micklen’s photo was taken in 2014, not 2015. As Ian Stirling told Mashable, 2015 was also a year that featured extensive sea ice loss in parts of the Svalbard archipelago.”
Freedman’s update, especially the second sentence, is clearly a response to this post. The implication is that any amount of late summer sea ice that’s below average around Svalbard is a threat to polar bear survival. However, there is no published scientific evidence to support that. The evidence that links sea ice levels with polar bear body condition for Svalbard area bears is for spring and early summer ice, and for denning success, fall ice arrival dates. Many Barents Sea bears never come to land, they travel with the sea ice as it expands and contracts, and females den on the ice.
As I tweeted last month, with two maps (3 August 2015)
“Svalbard #polarbears den in the EAST, critical #seaice levels in fall, vary by yr; lots of hunting habitat N & E”
Low ice levels in western Svalbard in late summer are of little consequence for the polar bear population there. Sea ice in the Barents Sea varies with the state of the Atlantic Multidecadal Oscillation (AMO) — even the US National Snow and Ice Data Center says so. Those changes are not evidence of global warming. And I reiterate: starvation is the leading cause of death for polar bears.
Comments Off on Last year’s dead Svalbard polar bear used for this year’s propaganda
Posted in Advocacy, Sea ice habitat
Tagged dead, global warming, Kerstin Langenberger, Paul Nicklen, photographers, polar bear, sea ice, starving, Stirling, Svalbard
Polar bears are leanest – and therefore, hungriest – at the end of March, not in the summer, as chemist Crispin Halsall stated in a recent article about working in the Arctic.
Recent September 1st stories by CNN and the BBC, based on a press release by WWF Russia on 27 August 2015, that five bears in the southern Kara Sea were hanging around a weather station and frightening workers there, apparently prompted chemist Crispen Halsall to make a nonsensical statement about polar bears being at their “hungriest” in summer (first here, reproduced here and picked up yesterday (September 5) by The Guardian here).
“In the path of the polar bears: what it’s like to be an Arctic scientist” (4 September 2015; Crispin Halsall, Reader in Environmental Chemistry at Lancaster University) had this to say:
“The case of Russian scientists trapped in their remote Arctic base by a group of inquisitive yet hungry polar bears does not come as a surprise. By late summer, Arctic sea ice is at a minimum and polar bears are effectively landlocked in coastal areas eagerly awaiting the return of ice during the autumn freeze and the chance to hunt seals again.
The Arctic summer is also the time of year when scientific activities are at their maximum, with bases operating at capacity and fieldwork operations at full flow, particularly in tundra and coastal regions. Polar bears are hungriest when scientists are busiest – “encounters” are inevitable.” [my bold]
Polar bears are leanest – and therefore, the hungriest – at the end of winter (when it is more likely to kill with the intent to consume human prey) as stated clearly by Stirling and Øritsland (1995:2603):
“Polar bears reach their lightest weights for the year in late March, just prior to the birth of the next cohort of ringed seal pups, which also suggests that it is the success of their hunting in spring and early summer that gives them the body reserves they need to survive through the rest of the year.” [my bold]
A polar bear that has not fed properly in spring – because it was young and inexperienced, too old or too young to defend its kills from bigger, stronger bears, or simply sick or injured – it might be unusually hungry in summer but it’s not the norm. Polar bears eat nothing or very little over the summer (whether on land or on the ice) because they live off their stored fat – the physiological condition known as ‘fasting.’
The photos and video in the September 1, 2015 BBC story of the Russian bears shows this: the bears are fat, not skinny (“Video caption: Five bears settled near the weather station on the north Russian island of Vaygach, as Frankie McCamley reports”):
Polar bears might approach humans working in the Arctic during the summer because they are curious and/or bored, and they might attack and even eat humans because they have a drive to eat whenever the opportunity arises. But it’s not because they are “hungriest” in the summer.
References
Stirling, I. and Øritsland, N. A. 1995. Relationships between estimates of ringed seal (Phoca hispida) and polar bear (Ursus maritimus) populations in the Canadian Arctic. Canadian Journal of Fisheries and Aquatic Sciences 52: 2594 – 2612. http://www.nrcresearchpress.com/doi/abs/10.1139/f95-849#.VNep0y5v_gU
Comments Off on Polar bears are not hungriest in summer when scientists are busy in the Arctic
Posted in Life History, Polar bear attacks
Tagged Arctic, attack, energy budget, heaviest, hungry, leanest, polar bear, science, scientists, sea ice, summer
You must be logged in to post a comment.