It is unlikely that these calving events are the result of regional climate warming.
For the Gwich'in, the calving ground of the Porcupine herd is a sacred place.
Ranchers embraced the storm, even though bitter cold snow can be deadly during calving season.
Although this year's calving season set records, it may not be enough to say the species will recover.
The derived velocities show almost no seasonal variation for the analyzed calving termini.
The section targeted for drilling houses caribou calving grounds and habitat for polar bears, musk oxen and migratory birds.
Schaller himself had attempted to find the calving ground a year earlier, but his trek failed when his pack animals died.
However, there were no instances of any calving problems in that herd.
Something happens to your sense of time here: It compresses like the crystals of blue ice, then falls away like a calving glacier.
Global warming has been effectively marketed by doom-speakers because it provides really exciting visual impressions: icebergs calving, polar bears exhausted from swimming, and such.
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The team spent two days photographing the calving ground and gathering data that would be used by conservationists to persuade China to protect the area.
Instead, they present sensational statements and dramatic images that leave lasting impressions of calving glaciers, drowning polar bears and all manner of other man-caused climate calamities.
The white sun was still cool and the animals were cautiously on the move: wildebeest were calving and zebras grazed, their brush-like tails swishing at clouds of pestering tsetse flies.
Sequential optical images of high spatial resolution were used for the first time to derive surface ice velocities of Glaciar Upsala, a fast-moving fresh-water calving glacier in southern Patagonia.
Migratory caribou in low Arctic Greenland and elsewhere are declining in number as they have not been able to keep their calving season in synch with changes in plant growth.
Similar behavior exists in herds of caribou that migrate across the Arctic coastal plan to a specific calving ground even though it is unlikely any of the individual animals know where they are going.
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