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The Caspian lowland desert ecoregion (WWF ID: PA1308) covers the north and southeast coasts of the Caspian Sea, including the deltas of the Volga River and Ural River in the northern region. While the region gets relatively low amounts of precipitation (less than 200 mm/year), wildlife is supported by the river estuaries and the sea itself.
The North Caspian depression is part of the continental or semi-arid desert biome. The area receives 300 mm (12 in) of rain per year, on average, and less than 10% of the region is irrigated. The Caspian Depression is below sea level, consisting of large areas of marshlands in the eastern region.
The Caucasus (/ ˈ k ɔː k ə s ə s /) or Caucasia [3] [4] (/ k ɔː ˈ k eɪ ʒ ə /), is a region spanning Eastern Europe and Western Asia.It is situated between the Black Sea and the Caspian Sea, mainly comprising Armenia, Azerbaijan, Georgia, and parts of Southern Russia.
The Central Asian southern desert ecoregion (WWF ID: PA1312) is an arid but ecologically active region between the east coast of the Caspian Sea and steppes at the base of the mountains of central Asia. Most of Turkmenistan and eastern Uzbekistan is in this ecoregion.
In the 21st century, Georgia is regarded as a European country [90] for historical, cultural, religious, and political reasons. [91] [92] [93] The international geographic community has never reached a universal agreement on continental borders, especially with regard to the Caucasus region between the Black and Caspian seas.
In Iran, the Hyrcanian ecoregion comprises a long strip along the southern coast of the Caspian Sea and the northern slopes of the Alborz mountains. It covers parts of five provinces, from east to west: North Khorasan, Golestan (421,373 hectares (1,041,000 acres) being its south and southwest plus eastern regions of the Gorgan plain), Mazandaran, Gilan and Ardabil.
Later, the Caspian Gates were also identified with the Pass of Derbent (in modern Dagestan) on the Caspian; or with the Pass of Dariel, a gorge forming a pass between Georgia and North Ossetia–Alania. Tradition also connects it to the Great Wall of Gorgan (Red Snake) on its south-eastern shore.
The ecoregion lies mostly in the Kura-Aras Lowland, drained by the Kura River which flows eastward to empty into the Caspian Sea, and its southern tributary the Aras.It is bounded on the north by the Caucasus range, on the west by the Lesser Caucasus, and on the southwest by the Armenian Highlands, on the south by the Elburz Range, and on the east by the Caspian Sea. 70% of the ecoregion is ...