Arctic dwellers from Alaska to Siberia have noticed within their lifetimes

Arctic dwellers from alaska to siberia have noticed

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Arctic dwellers from Alaska to Siberia have noticed, within their lifetimes, significant changes in local climate. Over the past century warming has occurred at a rate of 9 0 F (5 0 C) in the Arctic. Since 1978 warming has increased at a rate of 2.2 0 F (1.2 0 C) per decade. During the last 20 years the Arctic has warmed at nearly seven times the rate of the last 100 years . Also more open ocean means winds can build up stronger waves that are eroding Arctic Coasts. As a result, indigenous communities in Alaska are having to move their villages miles inland in order to escape erosion of low lying coasts. As of 2018, 32 Native Alaskan villages remain in danger of losing their ancestral homes because of climate change. Significant warming in the Arctic is opening the region to exploration of oil, natural gas, and minerals by transnational corporations.
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Polar Bears Lack of sea ice threatens their seal food source. Seals are a fatty food source that allows polar bears to survive the winter . Polar bears become very hungry when they cannot access their primary food source, seals. To find seals to eat when a substantial amount of sea ice has melted, female polar bears have to swim long distances with two or three cubs on their backs, and then, not infrequently, they and their cubs drown. Two polar bear populations in the Arctic are shrinking. (And three others groups may face similar pressures.) Polar bears have less time to feed at the best time of year (winter) in order to lay on the fat they survive on through the open-water season in the summer and the fall. In search of food, hungry bears push into human settlements at the end of their longer and longer summer fasts. Adult males are smaller than in the early 1990s. Survival rate for bear cubs is now 43% within the first year. This compares to a 65% survival rate in the early 1990s.
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Moose (October 2013) Moose are dying off at a rapid pace not seen in generations across mountain forests of the USA and Canada . Minnesota’s state moose population dropped to fewer then 100 from 4000 in the late 1990s. (Moose hunting has been suspended in Minnesota.) Rise in moose die offs in Wyoming, Montana, and other parts of the Rocky Mountains as well. New Hampshire – Moose populations appear to be in trouble. Maine – The only state where populations remain stable, even though temperatures have risen, but remain relatively cold .
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Tick populations affecting moose have surged in numbers . Warming climate is increasing tick populations. Moose have been found with thousands of ticks on them. Death by ticks is a gradual, miserable end. Ticks weaken moose which can be seven feet tall and weigh up to 1,800 pounds. Moose scratch their own hair off (with the blood sucking ticks attached) and are left without a coat and become anemic and emaciated. Ticks infest moose early in the spring. (Ticks and their eggs normally die as winter sets in.) Warmer winters have allowed the ticks to survive and multiply .
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