[15], In 1892–1894, and again in 1900–1902, Baron Eduard von Toll explored the Laptev Sea in the course of two separate expeditions. There are two known sub-species of walrus - the Atlantic walrus and Pacific walrus, though scientists are trying to confirm if there is in fact a third sub-species unique to Russia's Laptev Sea. In 1770, the merchant Ivan Lyakhov revisited the islands and then asked a government permission to commercially develop their ivory resources. More Laptevykh; Yakut: Лаптевтар Байҕаллара, romanized: Laptevtar Baỹğallara) is a marginal sea of the Arctic Ocean. [3] The deeper layer is colder at about −0.8 °С. [23][24] In 1875, Adolf Erik Nordenskiöld was the first to travel across the whole sea on a steamship Vega. [32] Rare vascular plants include species of Cerastium and Saxifraga. Spatial genetic structure and asymmetrical gene flow within the Pacific walrus. Some concern has also been expressed at the effects of bottom trawling for flatfishes on walrus habitat near haulouts in Bristol Bay, dragging of the sea bed by fishermen having been known to disturb and destroy walrus feeding habitat. The Kara Sea lies to the west, the East Siberian Sea to the east. VideoGuinea elections: Campaigning during Covid-19, 'We're fighting for our futures' Video'We're fighting for our futures', Amina is a 'symbol of resilience for Afghanistan' VideoAmina is a 'symbol of resilience for Afghanistan', Portugal's radical decision to decriminalise all drugs. The maximum recorded dive for a walrus is a depth of 113m for almost 25 minutes, but individuals are thought to be able to dive deeper than this. Disturbance from sources such as tourism and fisheries is also a concern, particularly as walrus calves may be trampled underfoot during disturbance-caused stampedes of hauled out walruses. Some belong to permanent (tundra) species, such as snow bunting (Plectrophenax nivalis), purple sandpiper (Calidris maritima), snowy owl (Bubo scandiacus) and brent goose and other make large colonies on the islands and sea shores. Volume 2, "The Drift of Lenin's Convoy in the Laptev Sea, 1937–1938", "XuMuK.ru - ГОРНАЯ КОМПАНИЯ ЮЖНАЯ, ООО - Добыча руд и песков драгоценных металлов (золота, серебра и металлов платиновой группы), регион РЕСПУБЛИКА САХА (ЯКУТИЯ)", "Life is cold and hard and desolate at Alert, Nunavut", A Study of Environmental Arctic Change (SEARCH) Arctic Atmospheric Observatories, Islands of the Laptev Sea (Russian Arctic), https://en.wikipedia.org/w/index.php?title=Laptev_Sea&oldid=982766192, CS1 maint: BOT: original-url status unknown, Short description is different from Wikidata, Articles using infobox body of water without alt, Articles using infobox body of water without pushpin map, Articles using infobox body of water without image bathymetry, Articles containing Russian-language text, Wikipedia articles needing clarification from November 2010, Wikipedia articles with WorldCat identifiers, Creative Commons Attribution-ShareAlike License, The southern boundary is the shore of the Asian mainland. Walrus calves stay with their mothers for up to three years - an unusually long time for seals. In comparison, the number of green algae, blue-green algae and flagellate species is about 10 each. Local unemployment caused by the general economic situation and the closure of the farms has however led to a recent increase in illegal head-hunting. In the Pacific, adult male walruses reach about 3.6 m in length and weigh 880-1,557 kg; adult females are about 3 m and … In general, the sea level rises with northern and lowers with southern winds, but depending on the area, the maximum amplitude is observed for a specific wind direction (e.g. This results in a pregnancy rate that is much lower than that for other pinnipeds. The latest year for which there are reasonably reliable figures covering both the United States and Russian hunts show that 2,501 walruses were killed in Alaska and 941 in Chukotka during 1996. He also said that nobody knows what effect the increase in shipping through the Arctic will have on the walruses. [3] Strong winds, blizzards and snow storms are common in winter. Pronchishchev and his wife succumbed to scurvy and died on the way back. In the world, there are about 200,000 Pacific walruses. The sea shores are winding and form gulfs and bays of various sizes. [3], The coast of the Laptev Sea was inhabited for ages by the native peoples of northern Siberia such as Yukaghirs and Chuvans (sub-tribe of Yukaghirs). Analytical, Diagnostic and Therapeutic Techniques and Equipment 3 They came from the south via several large rivers which empty into the sea, such as the prominent Lena River, the Khatanga, the Anabar, the Olenyok, the Omoloy and the Yana. On the East. Fill in your details below or click an icon to log in: You are commenting using your WordPress.com account. На архипелагах и островах, Baron Eduard von Toll’s Last Expedition: The Russian Polar Expedition, 1900–1903, "Preliminary results of botanical and microbiological investigations on Severnaya Zemlya 1995", Список видов морских млекопитающих, встречающихся в море Лаптевых, Bird Observations in Severnaya Zemlya, Siberia, Усть-Ленский государственный природный заповедник, Mammals in the Seas: Pinniped species summaries and report on sirenians. Ancient DNA from marine mammals: Studying long-lived species over ecological and evolutionary timescales. Anzhu Islands (the northern part of New Siberian Islands) were named after him. They feed on mussels and clams, which they suck off the bottom of the sea. Drilling there will have unknown consequences," explained Anatoly Kochnev of Chukottinro, the Chukotka branch of Russia's Pacific Research Fishery Centre. Air temperatures stay below 0 °С 11 months a year on the north and 9 months on the south. Adult males make a number of taps, knocks, pulses and bell sounds under the water during the mating season. The maximum of 32.7 °C (90.9 °F) was recorded in Tiksi. Tusk length and tusk circumference were measured from the few skulls available of O. r. laptevi, and the obtained values were within the ranges reported for Pacific walruses. (c) Seal Conservation Society 2011 | Terms of use | Website Privacy Policy, Orphan pup rehab workshop Dunedin Dec 2013, Easily recognised by its long tusks, the walrus is the only living member of the Odobenidae family of pinnipeds and has two generally recognised subspecies. The Laptev Sea (Russian: Мо́ре Ла́птевых, tr. In July, the temperature rises to 0 °С (maximum 4 °С) in the north and to 5 °С (maximum 10 °С) in the south, however, it may reach 22–24 °С on the coast in August. Walruses, particularly calves, are preyed upon by polar bears and killer whales. There are serious concerns that walrus numbers may be threatened by a loss of sea ice caused by global warming and environmental changes, the retreating sea ice reducing the availability of suitable habitat and food supply. Walrus resting near the Laptev Sea (Shutterstock) Perhaps one for the future, a WWF-led research team recently studied a colony of walrus in Russia’s Laptev Sea in northern Siberia. The calf is nursed solely on milk for the first 6 months or so, before beginning to eat solid foods. In 1995 it was calculated that the native kill of Atlantic walrus, including those struck and lost, totalled about 1,150 per year. It results in a large continuous sheet of ice, with the thickness up to 2 meters (6 ft 7 in) in the south-eastern part of the sea as well as near the coast. divergens) is found in the north Pacific Ocean and in Arctic waters from the East Siberian Sea to the western Beaufort Sea, as well as in the Laptev Sea. Fox farming operations in Chukotka are currently in decline due to economic recession. The medium water layer is warmer, up to 1.5 °С because it is fed by the warm Atlantic waters. [9] The coastal sheet ends at the water depth of 20–25 m which occurs at several hundred kilometers from the shore, thus this coastal ice covers some 30% of the sea area. Although commercial hunting has now ceased, other forms of hunting currently have the most direct and quantifiable impact on walrus populations. known as the Tartar Sea (Russian: Татарское мо́ре) in the 16th century, as the Lena Sea (Russian: Ленское мо́ре) in the 17th century, as the Siberian Sea (Russian: Сибирское мо́ре) in the 18th century and as the Icy Sea (Russian: Ледовитое мо́ре) in the 19th century. [1], There are several dozens of islands with the total area of 3,784 km2 (1,461 sq mi), mostly in the western part of the sea and in the river deltas. The sea exports substantial amounts of sea ice in all months but July, August and September. Then through Malyi Island [Little Lyakhovsky Island], to Cape Vaguin on Great Liakhov Island. Relatively weak winds result in low convection in the surface waters, which occurs only to the depth of 5–10 meters. The latter amounts to about 730 km3 and would form a 135 cm freshwater layer over the entire sea; it is the second largest in the world after the Kara Sea. Conservationists also worry that if there were an oil spill close to such a massive Pacific walrus "haul-out", then an entire sub-species would be at risk. Pinniped taxonomy: review of currently recognized species and subspecies, and evidence used for their description, https://doi.org/10.1111/j.1463-6409.2008.00364.x. [3] (see Islands of the Laptev Sea), More than half of the sea (53%) rests on a continental shelf with the average depths below 50 meters (160 ft), and the areas south from 76°N are shallower than 25 m.[7] In the northern part, the sea bottom sharply drops to the ocean floor with the depth of the order of 1 kilometer (0.62 mi) (22% of the sea area). [3] The ice sheet starts melting in late May-early June, creating fragmented ice agglomerates on the north-west and south-east and often revealing remains of the mammoths. Fishery and hunting have relatively small volume and are mostly concentrated in the river deltas. Walruses are particularly at risk from oil spills as their staple diet of benthic invertebrates are known to accumulate hydrocarbons. The walrus uses its stiff whiskers to locate its food, often feeding in total darkness in the winter. It is hoped that this problem and other related walrus conservation problems in Alaska will decline through greater co-management and cooperation between the authorities and Alaskan native communities.

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