Lena river delta

Lena river delta Lena river delta

The Lena is the easternmost of the three great Siberian rivers that flow into the Arctic Ocean (the other two being the Ob River and the Yenisei River). Rising at a height of 1,640 meters at its source, the Baikal Mountains, the Lena flows northeast, to be joined by the Kirenga, Vitim and Olyokma rivers. The total length of the Lena river is estimated at 4,400 km, the total basin area is about 2,490,000 km2. Gold is washed out of the sands of the Vitim and the Olyokma, and mammoth tusks have been dug out of the delta.

Even where the stream is single the width of the river comes to 10 km, and its depth exceeds 16 - 20 m. At the end of the Lena River there is a large delta that extends 100 km into the Laptev Sea and is about 400 km wide. The Lena delta divides into a multitude of flat islands.
The majority of researchers believe that the name of the River Lena was acquired from the original Even-Evenk name Elyu-Ene, which means "the Large River". In 1620-23 a party of Russian fur hunters under the leadership of Demid Pyanda sailed up the Lower Tunguska, discovered the proximity of the Lena and explored some 2,400 kilometers of the river from its upper rocky part to its wide flow in central Yakutia. The

Lena delta was reached in 1633 and further explored by expeditions of the Russian Imperial Academy of Sciences in 1885.
The climate is extremely severe and the delta is frozen tundra for about 7 months of the year, but in May it transforms the region into a lush wetland for the next few months. Part of the area is protected as the Lena Delta Wildlife Reserve. It is the most extensive protected wilderness area in Russia and an important refuge and breeding ground for many species of Siberian wildlife. The wet tundra in the delta, which floods each spring, is an important area for nesting and migrating birds, and also supports a rich fish population. There are 92 species of plankton, 57 benthic species, and 38 species of fish in the river. Sturgeon, burbot, chum salmon, Coregonus autumnalis (cisco), Stenodus leucychthis (nelma), and C. albula are the most commercially important fish.

Swans, divers, geese, ducks, plovers, sandpipers, snipes, phalaropes, terns, skuas, birds of prey, passerines and gulls are just some of the migratory birds that breed in the productive wetland, which also supports abundant populations of fish and 5 species of marine mammals. The island Tit Ary is famous for having the largest northernmost forest area, where larch trees can be found at latitude 72°.