Tag Archives: Gulf of St. Lawrence

Polar bear habitat update for Canada at mid-February

Mid-February is the tail end of the winter fast for polar bears. Sea ice is approaching it’s maximum global extent but local maximum extents may vary. Most of the sea ice in Canada is locked in already but two regions still vary at this time of year: the Labrador Sea off Labrador and Newfoundland – where polar bears come to feed on an abundance of newborn harp seals – and the Gulf of St. Lawrence, where polar bears have not been spotted in more than 60 years. sea-ice-extent-canada-2017-feb-14_cis

There is almost certainly enough ice for harp seals to give birth in the Gulf this year, if the ice holds (despite some premature hand-wringing by seal biologists). There is more ice in the Gulf and off Newfoundland this year than there was in 2013 (see map below). Continue reading

Worrywart biologists fuel media fearmongering over winter sea ice levels

Have you heard the old adage, “Don’t buy trouble”? I’m thinking we could use a lot more of that attitude from polar bear and Arctic seal biologists these days.

Gulf St Lawrence ice conc 7 March 2016_CIS

In an interview with CBC News yesterday, Department of Fisheries and Oceans Canada (DFO) seal specialist Mike Hammill fed the fear the media wanted to hear while admitting this year’s low ice levels in the Gulf of St. Lawrence will not affect harp seal numbers significantly (7 March 2016, Lack of ice means fewer seal pups off the Magdalen Islands this year: Researcher says impact on overall herd limited, but ice patterns over time could be concern”).

Harp sea newborn_wikipedia

And University of Alberta’s Andrew Derocher has been busy tweeting his heart out that slightly lower than average sea ice levels this winter could mean a “challenging” spring for some polar bears – as if spring isn’t always challenging for some bears (especially young bears that are inexperienced hunters and low in the social hierarchy – meaning bigger, older bears often steal their kills – and old bears that are running out of steam).
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Harp seal: most abundant Arctic seal is an undervalued polar bear prey species

The harp seal is the most abundant seal species in the northern hemisphere (estimated to number more than 9 million animals – that’s more harps than ringed seals) but are found only in the North Atlantic. Partly because they give birth on mobile pack ice, harps have their pups earlier in the season than all other Arctic seals, which means that in some regions, they are a critical food source for polar bears that have eaten little over the winter months.

Harp seal pup_DFO Newfoundland

Although young ringed seals are considered the primary prey of polar bears throughout the Arctic, young harp seals undoubtedly represent an increasingly important resource for populations of Davis Strait, East Greenland and Kara Sea bears.

Most of the harp seals in the NW Atlantic/Atlantic Canada (about 80% of them) have their pups off Newfoundland and Labrador, an area known as the “Front” (the location of my polar bear attack novel, EATEN: special deals all this week). Harps seals at the Front now provide a huge prey base for polar bears of the large (and possibly still growing) Davis Strait subpopulation (photo below courtesy DFO Canada).

There are an estimated 7.4 million harps in Atlantic Canada today (range 6.5-8.3m), an exponential increase over the early 1980s, when perhaps only half a million so remained.  Pagophilus groenlandicus was assigned a conservation status of ‘Least Concern’ by the IUCN Red List in June last year (Kovacs 2015), when it was estimated that the global population size of the harp seal was greater than 9 million animals and probably growing1, 2 due to reduced human hunting:

“…harp seals have been harvested for thousands of years but currently the population is large and the number of animals harvested is declining.” [my bold]

Photographers and animial rights activists love cute, fluffy harp seal pups and rarely mention the carnage that goes on in spring as polar bears devour the naive youngsters. See the video below (from 2008), for an example of the cuteness factor.

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Polar bear habitat at 26 January 2016

There is still below average ice extent in the Barents Sea but there is no data whatsoever to indicate that this situation poses a problem for polar bears, given that as far as researchers know, polar bears eat little or nothing during the winter. That’s why the bears are at their leanest at the end of winter and why seal pups born in early spring are such a critical food source.

Note on map below (from WUWT Sea Ice Page, marked; original here) that polar bears are not found in three areas that are included in the total Arctic ice extent figures: below-average or above-average ice in the Sea of Okhotsk, Baltic Sea, and Gulf of St. Lawrence have no impact on polar bear health and survival.

 

Polar bear habitat at 26 Jan 2016_no bears marked_PolarBearScience_sm

Additional ice maps below. Continue reading

Polar bear survival: habitat 2013 vs. 2016 for 22 January

Using sea ice maps issued by the National Sea Ice Data Center (NSIDC), it’s interesting to compare these two years with respect to polar bear health and survival (keeping in mind that no polar bears live in what I like to call the armpits of the Arctic – the Sea of Okhotsk, the Baltic Sea or in the Gulf of St. Lawrence)1:

22 January 2016

Sea ice extent 2016 Jan 22 NSIDC

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Human sees cute – polar bear sees dinner

Newborn harp seals are food for Davis Strait, East Greenland and Kara Sea polar bears but wildlife photographers see only cute furry babies with big eyes and trusting natures.

Harp sea newborn_wikipedia

See these photos taken some unknown spring (early March) in the Gulf of St. Lawrence, Canada (published 29 December 2015 by Mailonline): the pups are kind of skinny when first born but fatten up quickly on fat-rich milk from their attentive mothers. Ask yourself: does this photographer know that the fattest of these baby seals he oh’s and ah’s over in his commentary are just what polar bears depend on for their existence – and that the bears will eat as many of them as they can catch, peeling them like bananas so that they can eat the skin and fat first?

The title of the piece is: “Eye-eye! Cheeky seal cubs just a few days old wink and pose for the camera as they wait for their mother to feed them:

  • The young Harp seal pups had never seen humans before the pictures were taken
  • They were photographed in their habitat of Madeleine Island in Quebec, Canada
  • Harp seals are solitary animals except during breeding season, when they congregate in their thousands

“These seal-ebrities from Canada are pictured striking hilarious poses that even Cara Delevingne would be proud of.

The three Harp seal pups – just days old – were passing time while they waited for their mother to return from hunting.

One pup looked straight to the camera with a cheeky wink, while another lay on its back looking longingly at the lens.

The impressive poses were captured by photographer Gunther Riehle, who was lucky enough to get just feet away from the baby seals on Madeleine Island in Quebec.”

See the photos here. Harp seal and hooded seal distribution and breeding areas in the Eastern Arctic (from DFO Canada).

Harp and hooded seal pupping areas and distribution_Stenson 2014 fig 1

More polar bear seal prey info here. See potential consequences of lots of polar bears depending on abundant harp seals north of Newfoundland in my novel, EATEN.

Spring sea ice prediction for next year off Newfoundland: extensive ice coverage

EATEN – my new polar bear attack novel – is set in Newfoundland 2025 for a reason. I wondered: what if sea ice coverage 10 years from now is as high or higher than it has been for the last two years, with inevitable positive effects on Davis Strait harp seal and polar bear populations?

The Canadian Ice Service prediction for this region, released earlier this week (1 December 2015, see references for link), is that 2016 is set to meet my “what-if” scenario handily. Nine years to go! See the CIS expected ice coverage for 19 February 2016 below (CIS fig. 3):

2016 Newfoundland Ice outlook for 19 Feb 2016_at Dec 1 2015

How does the above ice map compare to the last two years? At least as high or higher. Have a look below.

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