It was a good year for polar bear habitat in the southern portions of Eastern Canada this spring – surprisingly, much better than it was in 1968 through 1970. And since spring conditions are what really matter to polar bears, this is good news indeed.
Environment Canada’s Canadian Ice Service recently published a nice little summary that has some rather eye-opening graphs. These describe the conditions for polar bears in the southern Davis Strait subpopulation – the one whose population size increased so dramatically between 1974 and 2007 despite lower-than-average ice extent in some years, even while their body condition declined (see here and here).
[Fitting post for the second anniversary of this blog, I think – more below1]
Note that I’ve added a “Blog Archive” page that lists all of my posts, easier to browse now that there are more than 200 of them.
Posted in Sea ice habitat
Tagged blog stats, Canadian Arctic, Canadian Ice Service, Davis Strait, Gulf of St. Lawrence, Labrador, Newfoundland, pack ice, polar bear habitat, sea ice, sea ice declines, sea ice maximum, southern-most polar bears, spring, spring ice conditions, spring ice maximum
Ah, that never-ending treadmill of meal preparation and cleanup. You might be surprised to find out that polar bears do it too.
Figure 1. How do polar bears look so clean most of the time when they get this bloody on a regular basis? They wash up!
I found an interesting description of polar bears washing during and after feeding, by a young Ian Stirling in one of his earliest published polar bear papers (Stirling 1974). At the time, he was observing polar bears on southwest Devon Island (74°43′ N; 91°10′ W, see Fig. 2 below) between 24 July and 8 August 1973.
Even today, there’s ice for hunting seals in mid-to-late-summer in that part of Canada (Fig. 3).
Posted in Life History
Tagged 1973, Canadian Arctic, Devon Island, eating seals, feeding, polar bear, polar bears in summer, sea ice extent, Stirling, summer sea ice, washing