A northward extension of the Pacific Ocean between Siberia and Alaska, lying north of the Aleutian Islands and connected with the Arctic Ocean by the Bering Strait. It was first explored in the 17th century.
Bering Sea
| Dictionary: Bering Sea |
A northward extension of the Pacific Ocean between Siberia and Alaska, lying north of the Aleutian Islands and connected with the Arctic Ocean by the Bering Strait. It was first explored in the 17th century.
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| Britannica Concise Encyclopedia: Bering Sea |
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| Columbia Encyclopedia: Bering Sea |
Bering Sea, c.878,000 sq mi (2,274,020 sq km), northward extension of the Pacific Ocean between Siberia and Alaska. It is screened from the Pacific proper by the Aleutian Islands. The Bering Strait connects it with the Arctic Ocean. The sea's largest embayments are the Gulf of Anadyr, Norton Sound, and Bristol Bay. The Anadyr River enters the sea from the west and the Yukon River from the east. The warm Japan Current has little influence on the Bering Sea, which has much ice; it can usually be traversed by ship only from June to October. The sea has many islands, notably Nunivak, St. Lawrence, Hall, St. Matthew, and the Pribilof Islands (all owned by the United States) and the Komandorski Islands (Russia).
The sea was explored by the Russian Semyon Dezhnev in the 17th cent., but not until after the voyages of Vitus Bering (1728, 1741) was the fur-seal wealth of the Bering Sea made widely known. The whole region was under the control of the Russian American Company, but it proved impossible to prevent mariners from other nations from getting the skins of the seals and the sea otters.
The question of protecting the seals became (1886) the subject of a bitter international incident called the Bering Sea Fur-Seal Controversy. The seal herd that summered in the Pribilof Islands wintered farther south; when returning north in the spring they could be taken in the open sea. The pelagic (open-sea) sealing, practiced by Canadian and other sealing vessels, greatly reduced the herd and threatened it with extinction. The Alaska Commercial Company, which had a U.S. monopoly on the sealing, protested to the U.S. government, and in 1886 several Canadian vessels were seized and were condemned by a court at Sitka, Alaska.
The legal basis for such action was the claim that Russia had controlled all the Bering Sea and that the control had passed to the United States with the purchase of Alaska in 1867; by claiming to exercise jurisdiction beyond the three-mile limit the United States had invoked the doctrine of mare clausum (closed sea) for the first time. This was not accepted by the British, and a move to settle the matter of protection by international agreement was blocked by the Canadians. The matter was referred to an international court of arbitration, which, meeting in Paris, declared in 1893 against the U.S. claim and awarded $473,151 in damages to the owners of the seized vessels. It also imposed some restrictions on pelagic sealing, but these were ineffective.
In 1911, Great Britain, Russia, Japan, and the United States agreed to prohibit pelagic sealing; sealing in the Pribilofs was put completely under U.S. supervision. For several years sealing was stopped completely, and then it was resumed but only under careful restrictions. In 1941, Japan withdrew from the agreement, but a new agreement was signed in 1956.
| Geography: Bering Sea |
(beer-ing, bair-ing)
Northward extension of the Pacific Ocean between Siberia and Alaska. The Bering Strait connects it with the Arctic Ocean.
| Wikipedia: Bering Sea |
The Bering Sea is a body of water in the Pacific Ocean that comprises a deep water basin, which then rises through a narrow slope into the shallower water above the continental shelves.
The Bering Sea is separated from the Gulf of Alaska by the Alaska Peninsula. It covers over two million square kilometers, bordered on the east and northeast by Alaska, on the west by Russia's Siberia and Kamchatka Peninsula, on the south by the Alaska Peninsula and the Aleutian Islands and on the far north by the Bering Strait, which separates the Bering Sea from the Arctic Ocean's Chukchi Sea. Bristol Bay is the portion of the Bering Sea which separates the Alaska Peninsula from mainland Alaska. The Bering Sea is named for the first European discoverer to systematically explore it, the Danish Russian navigator Vitus Bering.
The Bering Sea ecosystem includes resources within the jurisdiction of the United States and Russia, as well as international waters in the ‘Donut Hole’. The interaction between currents, sea ice, and weather make for a vigorous and productive ecosystem.
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History
Most scientists believe that during the most recent ice age, sea level was low enough to allow humans and other animals to migrate on foot from Asia to North America across what is now the Bering Strait. This is commonly referred to as the "Bering land bridge" and is believed by some—though not all— to be the first point of entry of humans into the Americas.
There is a small portion of the Kula Plate in the Bering Sea. The Kula Plate is an ancient tectonic plate that used to subduct under Alaska during the Triassic period.
Geography
Islands
Islands of the Bering Sea include:
- Pribilof Islands
- Komandorski Islands, including Bering Island
- St. Lawrence Island
- Diomede Islands
- King Island
- St. Matthew Island
- Karaginsky Island
- Nunivak Island
Regions
Regions of the Bering Sea include:
The Bering Sea contains 16 submarine canyons including the largest submarine canyon in the world, Zhemchug Canyon.
Ecosystem
The Bering Sea shelf break is the dominant driver of primary productivity in the Bering Sea.[1] This zone, where the shallower continental shelf drops off into the North Aleutians Basin is also known as the “Greenbelt”. Nutrient upwelling from the cold waters of the Aleutian basin flowing up the slope and mixing with shallower waters of the shelf provide for constant production of phytoplankton.
The second driver of productivity in the Bering Sea is seasonal sea ice that, in part, triggers the spring phytoplankton bloom. Seasonal melting of sea ice causes an influx of lower salinity water into the middle and other shelf areas, causing stratification and hydrographic effects which influence productivity.[2] In addition to the hydrographic and productivity influence of melting sea ice, the ice itself also provides an attachment substrate for the growth of algae as well as interstitial ice algae.
Some evidence suggests that great changes to the Bering Sea ecosystem have already occurred. Warm water conditions in the summer of 1997 resulted in a massive bloom of low energy coccolithophorid phytoplankton (Stockwell et al. 2001). A long record of carbon isotopes, which is reflective of primary production trends of the Bering Sea, exists from historical samples of bowhead whale baleen.[3] Trends in carbon isotope ratios in whale baleen samples suggest that a 30-40% decline in average seasonal primary productivity has occurred over the last 50 years.[3] The implication is that the carrying capacity of the Bering Sea is much lower now than it has been in the past.
Biodiversity
The Bering Sea is home to some of the world's most interesting wildlife. This sea supports many endangered whale species including Bowhead Whale, Blue Whale, Fin Whale, Sei Whale, Humpback Whale, Sperm Whale and the rarest in the world, the North Pacific Right Whale. Other marine mammals include walrus, Steller Sea Lion, Northern Fur Seal, Beluga, Orca and polar bear.
The Bering Sea is very important to the seabirds of the world. Over 30 species of seabirds and approximately 20 million individuals breed in the Bering Sea region. Seabird species include Tufted Puffins, the endangered Short-tailed Albatross, Spectacled Eider, and Red-legged Kittiwakes. Many of these species are unique to the area, which provides highly productive foraging habitat, particularly along the shelf edge and in other nutrient-rich upwelling regions, such as the Pribilof, Zhemchug, and Pervenets canyons.
Two Bering Sea species, the Steller's Sea Cow (Hydrodamalis gigas) and Spectacled Cormorant (Phalacrocorax perspicillatus), are extinct because of overexploitation by man. In addition, a small subspecies of Canada goose, the Bering Canada goose (Branta canadensis asiatica) is extinct due to overhunting and introduction of rats to their breeding islands.
The Bering Sea supports many species of fish. Some species of fish support large and valuable commercial fisheries. Commercial fish species include 6 species of Pacific Salmon, Alaska Pollock, Red King Crab, Pacific cod, Pacific halibut, Yellowfin Sole, Pacific ocean perch and sablefish.
Fish biodiversity is high, and at least 419 species of fish have been reported from the Bering Sea.
Fisheries
The Bering Sea is world renowned for its enormously productive and profitable fisheries, such as King Crab,[4] opilio and tanner crabs, Bristol Bay salmon, pollock and other groundfish.[5] These fisheries rely on the productivity of the Bering Sea via a complicated and little understood food web. The continued existence of these fisheries requires an intact, healthy, and productive ecosystem.
Commercial fishing is big business in the Bering Sea, which is relied upon by the largest seafood companies in the world to produce fish and shellfish. On the U.S. side, commercial fisheries catch approximately $1 billion worth of seafood annually, while Russian Bering Sea fisheries are worth approximately $600 million annually.
The Bering Sea also serves as the central location of the Alaskan king crab and Opilio crab seasons, which are chronicled on the Discovery Channel television program Deadliest Catch. Landings from Alaskan waters represents half the U.S. catch of fish and shellfish.
Change
Because of the changes going on in the Arctic, future evolution of the Bering Sea climate/ecosystem is uncertain.[6] This is a symmetric problem: climate change impacts ecosystems, and ecosystems serve as indicators for climate change.
See also
References
- ^ Springer, A.M., C.P. McRoy, and M.V. Flint. 1996. The Bering Sea green belt: shelf-edge processes and ecosystem production. Fisheries Oceanography 5, 205-223.
- ^ Schumacher, J.D., T. J. Kinder, D. J. Pashinski, and R. L. Charnell. 1979. A structural front over the continental shelf of the eastern Bering Sea. Journal Physical Oceanography 9: 79-87.
- ^ a b Schell, D. M. 2000. Declining carrying capacity in the Bering Sea: isotopic evidence from whale baleen. Limnol. Oceanogr. 45(2): 459-462.
- ^ Red King Crab, Paralithodes camtschaticus Alaska Fisheries Science Center. Retrieved 2007-04-07.
- ^ Bering Climate
- ^ http://www.arctic.noaa.gov/detect
External links
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Images and media from Commons
News stories from Wikinews
Learning resources from Wikiversity- Bering Sea Climate and Ecosystem from NOAA
- North Pacific Ocean theme page from NOAA
- Bering Sea-Aleutian Islands area state-waters groundfish fisheries and groundfish harvest from parallel seasons in 2005, by Barbi Failor-Rounds and Krista Milani, Alaska State Publications Program
Coordinates: 58°0′N 178°0′W / 58°N 178°W
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 | Norton Sound (inlet of the Bering Sea in western Alaska) |
| Alaska Peninsula (peninsula of south-central to southwest Alaska) |
| Bristol Bay (arm of the Bering Sea in southwest Alaska) |
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 | Dictionary. The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2007. Published by Houghton Mifflin Company. All rights reserved. Read more |
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| Britannica Concise Encyclopedia. Britannica Concise Encyclopedia. © 2006 Encyclopædia Britannica, Inc. All rights reserved. Read more |
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| Columbia Encyclopedia. The Columbia Electronic Encyclopedia, Sixth Edition Copyright © 2003, Columbia University Press. Licensed from Columbia University Press. All rights reserved. www.cc.columbia.edu/cu/cup/. Read more |
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| Geography. The New Dictionary of Cultural Literacy, Third Edition Edited by E.D. Hirsch, Jr., Joseph F. Kett, and James Trefil. Copyright © 2002 by Houghton Mifflin Company. Published by Houghton Mifflin. All rights reserved. Read more |
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Mentioned in
- Norton Sound (inlet of the Bering Sea in western Alaska)
- Alaska Peninsula (peninsula of south-central to southwest Alaska)
- Bristol Bay (arm of the Bering Sea in southwest Alaska)
- Nunivak (island off western Alaska)
- Seward Peninsula (peninsula of western Alaska projecting)
- Nunivak Island
- Aleutian Islands (Geography)
- Cousteau: Bering Sea - Twilight of the Alaskan Hunter (1990 Nature Film)
- Kamchatka (peninsula of eastern Russia)
- Komandorski Islands
- Kuskokwim (river of southwest Alaska)
- Punuk Culture (in archaeology)
- crested auklet
- Bering Standard Time (Standard time)
