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Aleutian Islands: Bering Sea
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Byrd, who has been involved in restoration efforts in the Aleutian islands since 1971, said most of the islands had major breeding colonies of seabirds before the arrival of foxes. There are about 26 species of seabirds that regularly nest on the islands, he said. They include surface nesters, such as gulls and terns, that lay their eggs on the ground; burrow nesters, such as puffins, that dig burrows in the soil for their nests; and crevice nesters, such as auklets, that nest in boulder piles and rock crevices.
The Russian Fur Traders: The Unangan culture thrived for centuries until the Russian fur traders discovered the Aleutian Islands around 1750. At this time, the Unangan population was estimated at 12,000 to 15,000. At first, they resisted the invasion, even resorting to warfare, but were eventually subjugated by the foreigners and forced to hunt sea otters and fur seals.
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Vast stretches of sea ice link Alaska’s Aleutian Islands in this true-color Terra MODIS image from January 3, 2004. This chain of volcanic islands stretches in an arc over 1200 miles long from the Alaskan Peninsula almost to Russia’s Komanorski Islands. They separate the Bering Sea from the northern Pacific Ocean, and are almost all part of the Aleutian National Wildlife Reserve. Phytoplankton clouds line the northern edges of the sea ice, creating a bluish-green halo.
The islands of the Aleutians are mountainous, being the emergent peaks of a submarine mountain range — part the so-called Pacific Ring of Fire. They have formed — and continue to be shaped by — the movement of the Pacific plate downwards beneath the Bering Sea plate. Strong earthquakes and active volcanism are common. Of the 76 volcanoes occurring within the Aleutian chain, 40 are known to have erupted within the last 250 years.
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During the early morning hours of March 9, 1957, a magnitude 8.3 earthquake struck along a section of the Aleutian Trench located south of the Andreanof Islands (the section of the Aleutian Islands shown above). The vertical seafloor displacement that accompanied this quake generated a major Pacific-wide tectonic tsunami, similar to the 1946 Aleutian event, but fortunately smaller. The 1957 event is not as well documented as that of 1946, which is probably do to the fact that it struck hardest at the sparsely populated Aleutian Islands, while more populated areas, such as Hawaii and California, received smaller waves.
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A seaweed expert has discovered a new kelp in the Aleutian Islands. Mandy Lindeberg, a research biologist with the National Marine Fisheries Services, says she knew the marine plant was special the first time she looked at it.
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