Five more bears were tagged near the Southern Beaufort Sea coast last month, all in the western portion of the coast where Chukchi Sea bears are often encountered. They join the one female who seems to have made a den way out over the continental shelf, where she’s been all winter.
This is the March 2016 follow-up to my post on the July 2013 track map for female polar bears being followed by satellite in the Beaufort Sea by the US Geological Survey (USGS) – “Ten out of ten polar bears being tracked this summer in the Beaufort Sea are on the ice.”
Five tagged bears are relatively few compared to eight last spring, and thirteen in 2013 [added to 7 from the previous year for a total of twenty, which were down to 13 by June] but the same as five tagged in 2014. This spring, three of the USGS tagged bears have glue-on transmitters, which means they are either males or juvenile bears rather than females (which are fitted with collars):
“In collaboration with the U.S. Fish and Wildlife Service we are also experimenting with glue-on and ear tag satellite transmitters, which can be deployed on adult male bears and younger, still-growing bears.”
Here is some old footage shot in 1968-1969 of four Dutch researchers – none of whom had any experience with large carnivores – sent to study polar bears at Kapp Lee on Edgeøya (eastern Svalbard). It’s in Dutch so I don’t know what they’re saying but given the choice of music (Beatles, “All You Need is Love”) I can guess the message.
Still, the images are kind of cool, it’s interesting to see how research was conducted at the time by inexperienced personnel. FYI, I began my university studies in 1968, I was not much younger than these students at the time.
Overwintering Spitsbergen 1968-1969 [Uploaded to youtube 21 October 2012; length 45:55]
Description: In the winter of 1968-1969 stayed four Dutch students on the island Edgeøya east of Spitsbergen to do research as to polar bears. During that expedition, this film made by Paul van de Bosch and Hans Sweet and exhibited by the NOS on Dutch television in 1969.
[Barents Sea polar bear subpopulation background here and here]
I found some additional background that I’ve included below, which shows how naive these young men were, although clearly they had enthusiasm. Dutch researcher Piet Oosterveld was one of the original four on the 1968 expedition and according to a recent news report (see below), will accompany a new expedition to study the effects of global warming. Map below is from the Dutch News story cited below. Spoiler alert: in 1987, Oosterveld was attacked by a polar bear and seriously injured, blamed in part on the rapid increase in polar bear numbers due to their protected status.
Posted in History, Polar bear attacks
Tagged attack, Barents Sea, Dutch researchers, Hacquebord, Norway, Oosterveld, polar bear, Spitsbergen, Svalbard, tagging, video
“Blizzards, we had fog — we had to sleep in the helicopter, on the sea ice one night, because we couldn’t fly anywhere,” Markus Dyck, senior polar bear biologist with the GN, told Nunatsiaq News Sept. 5.”
Fog was the theme of polar bear research this summer in Queen Maud Gulf, otherwise known as the M’Clintock Channel polar bear subpopulation region.
The ice has been heavy in that region as well, according to a the National Snow and Ice Data Center (NSIDC) and reported yesterday in another story (“Heavy pack ice in NW Passage ice creates tough conditions this year: Pack ice clogs Queen Maud Gulf“).
For maps showing where M’Clintock Channel and Queen Maud Gulf actually are, see the maps — and more quotes — below.
Posted in Population, Sea ice habitat
Tagged biopsy dart, heavy sea ice, helicopter survey, M'Clintock Channel, Markus Dyck, Northwest Passage, NSIDC, polar bear, population estimate, population survey, Queen Maud Gulf, tagging