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Northeast Siberian Coastal Tundra
The Northeast Siberian coastal tundra ecoregion (WWF ID: PA1107) is an ecoregion that covers the coastal plain of the central north region of Siberia in Russia. This coastal region borders the Laptev Sea and the East Siberian Sea, both marginal seas of the Arctic Ocean, from the Lena River delta in the west to the Kolyma River delta in the east. There are several large river deltas in the area that support breeding grounds for 60 to 80 species of migratory birds. The region is in the Palearctic realm, and the tundra biome. It has an area of . Location and description The ecoregion stretches 1,100 km along the north coast of Siberia, from the Lena River delta in the west to the Kolyma River delta in the east. The terrain is flat and rolling tundra. The entire region is on continuous permafrost. Thermokarst lakes are common, caused by the freezing and thawing of permafrost. Climate The region has a Humid continental climate - cool summer subtype (Koppen classification Dfc). ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thermokarst Lake
Alas ( sah, Алаас) is a shallow depression which occurs primarily in Yakutia, which is formed by subsidence of the Arctic permafrost owing to repeated melting and refreezing. An alas first develops as a shallow lake as melt water fills the depression. The lake eventually dries out and is replaced by grasses and other herbaceous vegetation. Examples An alas is different from thermokarst depressions found elsewhere in the Arctic in that the lake is only temporary. Due to the aridity of Yakutia, the lake will dry up once the underlying ice has been depleted. Alases are often used for pasturage for horses as well as hay-fields. They are common in the Central Yakutian Lowland. The largest alas in the world is Myuryu, located in Ust-Aldan District. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Larch
Larches are deciduous conifers in the genus ''Larix'', of the family Pinaceae (subfamily Laricoideae). Growing from tall, they are native to much of the cooler temperate northern hemisphere, on lowlands in the north and high on mountains further south. Larches are among the dominant plants in the boreal forests of Siberia and Canada. Although they are conifers, larches are deciduous trees that lose their needles in the autumn. Etymology The English name Larch ultimately derives from the Latin "larigna," named after the ancient settlement of Larignum. The story of its naming was preserved by Vitruvius: It is worth while to know how this wood was discovered. The divine Caesar, being with his army in the neighbourhood of the Alps, and having ordered the towns to furnish supplies, the inhabitants of a fortified stronghold there, called Larignum, trusting in the natural strength of their defences, refused to obey his command. So the general ordered his forces to the assault. In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Palearctic Ecoregions
The Palearctic or Palaearctic is the largest of the eight biogeographic realms of the Earth. It stretches across all of Eurasia north of the foothills of the Himalayas, and North Africa. The realm consists of several bioregions: the Euro-Siberian region; the Mediterranean Basin; the Sahara and Arabian Deserts; and Western Asia, Western, Central Asia, Central and East Asia. The Palaearctic realm also has numerous rivers and lakes, forming several freshwater ecoregions. The term 'Palearctic' was first used in the 19th century, and is still in use as the basis for Zoogeography, zoogeographic classification. History In an 1858 paper for the ''Proceedings of the Linnean Society'', British zoologist Philip Sclater first identified six terrestrial zoogeographic realms of the world: Palaearctic, Aethiopian/Afrotropic, Indian subcontinent, Indian/Indomalayan, Australasian realm, Australasian, Nearctic, and Neotropical. The six indicated general groupings of fauna, based on shared biog ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ecoregions Of Russia
The following is a list of ecoregions in Russia, according to the Worldwide Fund for Nature (WWF): Terrestrial Temperate broadleaf and mixed forests *Caucasus mixed forests (Armenia, Azerbaijan, Georgia, Russia, Turkey) *Central European mixed forests (Austria, Belarus, Czech Republic, Germany, Lithuania, Moldova, Poland, Romania, Russia, Ukraine) *Crimean Submediterranean forest complex (Russia, Ukraine) *East European forest steppe (Bulgaria, Moldova, Romania, Russia, Ukraine) *Manchurian mixed forests (China, Russia, North Korea, South Korea) *Sarmatic mixed forests (Belarus, Estonia, Finland, Latvia, Lithuania, Norway, Russia, Sweden) * South Sakhalin-Kurile mixed forests (Russia) *Ussuri broadleaf and mixed forests (Russia) *West Siberian broadleaf and mixed forests (Russia) Temperate coniferous forests *Altai montane forest and forest steppe (China, Kazakhstan, Mongolia, Russia) * Da Hinggan-Dzhagdy Mountains conifer forests (China, Russia) *Sayan montane conifer forests (M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
East Siberian Lowland
The East Siberian Lowland ( rus, Восточно-Сибирская низменность), also known as Yana-Kolyma Lowland,Oleg Leonidovič Kryžanovskij, ''A Checklist of the Ground-beetles of Russia and Adjacent Lands.'' p. 16 is a vast plain in Northeastern Siberia, Russia.Yana-Indigirka and Kolyma lowlands (physical map, scale 1: 2 500 000) // National Atlas of Russia . - M .: Roskartografiya, 2004. - T. 1. - S. 260—261. - 496 p. - The territory of the lowland is one of the . Administratively it is part of the |
List Of Ecoregions In Russia
The following is a list of ecoregions in Russia, according to the Worldwide Fund for Nature (WWF): Terrestrial Temperate broadleaf and mixed forests *Caucasus mixed forests (Armenia, Azerbaijan, Georgia, Russia, Turkey) *Central European mixed forests (Austria, Belarus, Czech Republic, Germany, Lithuania, Moldova, Poland, Romania, Russia, Ukraine) *Crimean Submediterranean forest complex (Russia, Ukraine) *East European forest steppe (Bulgaria, Moldova, Romania, Russia, Ukraine) *Manchurian mixed forests ( China, Russia, North Korea, South Korea) *Sarmatic mixed forests (Belarus, Estonia, Finland, Latvia, Lithuania, Norway, Russia, Sweden) * South Sakhalin-Kurile mixed forests (Russia) *Ussuri broadleaf and mixed forests (Russia) *West Siberian broadleaf and mixed forests (Russia) Temperate coniferous forests * Altai montane forest and forest steppe ( China, Kazakhstan, Mongolia, Russia) * Da Hinggan-Dzhagdy Mountains conifer forests ( China, Russia) * Sayan montane conifer f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vaccinium
''Vaccinium'' is a common and widespread genus of shrubs or dwarf shrubs in the heath family (Ericaceae). The fruits of many species are eaten by humans and some are of commercial importance, including the cranberry, blueberry, bilberry (whortleberry), lingonberry (cowberry), and huckleberry. Like many other ericaceous plants, they are generally restricted to acidic soils. Description The plant structure varies between species: some trail along the ground, some are dwarf shrubs, and some are larger shrubs perhaps tall. Some tropical species are epiphytic. Stems are usually woody. Flowers are epigynous with fused petals, and have long styles that protrude from their bell-shaped corollas. Stamens have anthers with extended tube-like structures called "awns" through which pollen falls when mature. Inflorescences can be axillary or terminal. The fruit develops from an inferior ovary, and is a four- or five-parted berry; it is usually brightly coloured, often being red or bluish wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salix
Willows, also called sallows and osiers, from the genus ''Salix'', comprise around 400 speciesMabberley, D.J. 1997. The Plant Book, Cambridge University Press #2: Cambridge. of typically deciduous trees and shrubs, found primarily on moist soils in cold and temperate regions. Most species are known as willow, but some narrow-leaved shrub species are called osier, and some broader-leaved species are referred to as sallow (from Old English ''sealh'', related to the Latin word ''salix'', willow). Some willows (particularly arctic and alpine species) are low-growing or creeping shrubs; for example, the dwarf willow (''Salix herbacea'') rarely exceeds in height, though it spreads widely across the ground. Description Willows all have abundant watery bark sap, which is heavily charged with salicylic acid, soft, usually pliant, tough wood, slender branches, and large, fibrous, often stoloniferous roots. The roots are remarkable for their toughness, size, and tenacity to live, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dryas (plant)
''Dryas'' is a genus of perennial cushion-forming evergreen dwarf shrubs in the family Rosaceae, native to the arctic and alpine regions of Europe, Asia and North America. The genus is named after the dryads, the tree nymphs of ancient Greek mythology. The classification of ''Dryas'' within the Rosaceae has been unclear. The genus was formerly placed in the subfamily Rosoideae, but is now placed in subfamily Dryadoideae. The species are superficially similar to ''Geum'' (with which they share the common name avens), ''Potentilla'', and ''Fragaria'' (strawberry). However, ''Dryas'' are distinct in having flowers with ''eight'' petals (rarely seven or up to ten), instead of the five petals found in most other genera in the Rosaceae. The flowers are erect and white with a yellow centre (''Dryas integrifolia'', ''Dryas octopetala'') or pendulous and all-yellow ('' Dryas drummondii''), and held conspicuously above the small plants. This makes them very popular in rockeries and alpine ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carex
''Carex'' is a vast genus of more than 2,000 species of grass-like plants in the family Cyperaceae, commonly known as sedges (or seg, in older books). Other members of the family Cyperaceae are also called sedges, however those of genus ''Carex'' may be called true sedges, and it is the most species-rich genus in the family. The study of ''Carex'' is known as caricology. Description All species of ''Carex'' are perennial, although some species, such as '' C. bebbii'' and '' C. viridula'' can fruit in their first year of growth, and may not survive longer. They typically have rhizomes, stolons or short rootstocks, but some species grow in tufts (caespitose). The culm – the flower-bearing stalk – is unbranched and usually erect. It is usually distinctly triangular in section. The leaves of ''Carex'' comprise a blade, which extends away from the stalk, and a sheath, which encloses part of the stalk. The blade is normally long and flat, but may be folded, inrolled, c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eriophorum
''Eriophorum'' (cottongrass, cotton-grass or cottonsedge) is a genus of flowering plants in the family Cyperaceae, the sedge family. They are found throughout the arctic, subarctic, and temperate portions of the Northern Hemisphere in acid bog habitats, being particularly abundant in Arctic tundra regions.Flora Europaea''Eriophorum''/ref> They are herbaceous perennial plants with slender, grass-like leaves. The seed heads are covered in a fluffy mass of cotton-like fibers which are carried on the wind to aid dispersal. The cotton grass also maintains a height of 12 inches and around 2 inches in water. In cold Arctic regions, these masses of translucent fibres also serve as 'down' – increasing the temperature of the reproductive organs during the Arctic summer by trapping solar radiation. Paper and the wicks of candles have been made of its fiber, and pillows stuffed with the same material. The leaves were formerly used in treating diarrhea, and the spongy pith of the stem ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Humid Continental Climate
A humid continental climate is a climatic region defined by Russo-German climatologist Wladimir Köppen in 1900, typified by four distinct seasons and large seasonal temperature differences, with warm to hot (and often humid) summers and freezing cold (sometimes severely cold in the northern areas) winters. Precipitation is usually distributed throughout the year but often do have dry seasons. The definition of this climate regarding temperature is as follows: the mean temperature of the coldest month must be below or depending on the isotherm, and there must be at least four months whose mean temperatures are at or above . In addition, the location in question must not be semi-arid or arid. The cooler ''Dfb'', ''Dwb'', and ''Dsb'' subtypes are also known as hemiboreal climates. Humid continental climates are generally found between latitudes 30° N and 60° N, within the central and northeastern portions of North America, Europe, and Asia. They are rare and isolat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
