The Elburz Range forest steppe

ecoregion An ecoregion (ecological region) or ecozone (ecological zone) is an ecologically and geographically defined area that is smaller than a bioregion, which in turn is smaller than a biogeographic realm. Ecoregions cover relatively large areas of ...

is an arid, mountainous 1,000-kilometer arc south of the

Caspian Sea The Caspian Sea is the world's largest inland body of water, often described as the world's largest lake or a full-fledged sea. An endorheic basin, it lies between Europe and Asia; east of the Caucasus, west of the broad steppe of Central A ...

, stretching across northern

Iran Iran, officially the Islamic Republic of Iran, and also called Persia, is a country located in Western Asia. It is bordered by Iraq and Turkey to the west, by Azerbaijan and Armenia to the northwest, by the Caspian Sea and Turkmeni ...

from the

Azerbaijan Azerbaijan (, ; az, Azərbaycan ), officially the Republic of Azerbaijan, , also sometimes officially called the Azerbaijan Republic is a transcontinental country located at the boundary of Eastern Europe and Western Asia. It is a part of th ...

border to near the

Turkmenistan Turkmenistan ( or ; tk, Türkmenistan / Түркменистан, ) is a country located in Central Asia, bordered by Kazakhstan to the northwest, Uzbekistan to the north, east and northeast, Afghanistan to the southeast, Iran to the s ...

border. It covers and encompasses the southern and eastern slopes of the

Alborz Mountains The Alborz ( fa, البرز) range, also spelled as Alburz, Elburz or Elborz, is a mountain range in northern Iran that stretches from the border of Azerbaijan along the western and entire southern coast of the Caspian Sea and finally runs no ...

as well as their summits. The

Caspian Hyrcanian mixed forests The Hyrcanian forests ( fa, جنگل های هیرکانی) are a zone of lush lowland and montane forests covering about adjoining the shores of the Caspian Sea of Iran and part of that of Azerbaijan. The forest is named after the ancient re ...

ecoregion, with its lush green mountainsides and plains that receive moisture from the Caspian Sea, forms this ecoregion's northern border. The vast Central Persian desert basins ecoregion forms its southern border.

Setting

The Alborz range is composed of a

granite Granite () is a coarse-grained ( phaneritic) intrusive igneous rock composed mostly of quartz, alkali feldspar, and plagioclase. It forms from magma with a high content of silica and alkali metal oxides that slowly cools and solidifies un ...

core overlain with

sedimentary rock Sedimentary rocks are types of rock that are formed by the accumulation or deposition of mineral or organic particles at Earth's surface, followed by cementation. Sedimentation is the collective name for processes that cause these particles ...

including

limestone Limestone ( calcium carbonate ) is a type of carbonate sedimentary rock which is the main source of the material lime. It is composed mostly of the minerals calcite and aragonite, which are different crystal forms of . Limestone forms w ...

shale Shale is a fine-grained, clastic sedimentary rock formed from mud that is a mix of flakes of clay minerals (hydrous aluminium phyllosilicates, e.g. kaolin, Al2 Si2 O5( OH)4) and tiny fragments (silt-sized particles) of other minerals, especiall ...

sandstone Sandstone is a clastic sedimentary rock composed mainly of sand-sized (0.0625 to 2 mm) silicate grains. Sandstones comprise about 20–25% of all sedimentary rocks. Most sandstone is composed of quartz or feldspar (both silicat ...

s, and

tuff Tuff is a type of rock made of volcanic ash ejected from a vent during a volcanic eruption. Following ejection and deposition, the ash is lithified into a solid rock. Rock that contains greater than 75% ash is considered tuff, while rock ...

Metamorphic rock Metamorphic rocks arise from the transformation of existing rock to new types of rock in a process called metamorphism. The original rock (protolith) is subjected to temperatures greater than and, often, elevated pressure of or more, caus ...

s such as

schist Schist ( ) is a medium-grained metamorphic rock showing pronounced schistosity. This means that the rock is composed of mineral grains easily seen with a low-power hand lens, oriented in such a way that the rock is easily split into thin flakes ...

marble Marble is a metamorphic rock composed of recrystallized carbonate minerals, most commonly calcite or dolomite. Marble is typically not foliated (layered), although there are exceptions. In geology, the term ''marble'' refers to metamorphose ...

s, and

amphibolite Amphibolite () is a metamorphic rock that contains amphibole, especially hornblende and actinolite, as well as plagioclase feldspar, but with little or no quartz. It is typically dark-colored and dense, with a weakly foliated or schistose (flaky ...

are also widely found. The climate is arid with annual precipitation varying from 150 mm to 500 mm, falling mostly as winter snow. Elevations typically range from , and the highest point in the Middle East, high

Mount Damavand Mount Damavand ( fa, دماوند ) is a dormant stratovolcano, the highest peak in Iran and Western Asia and the highest volcano in Asia and the 2nd highest volcano in the Eastern Hemisphere (after Mount Kilimanjaro), at an elevation of . ...

, is found here. Mount Damavand is also the tallest volcano in

Asia Asia (, ) is one of the world's most notable geographical regions, which is either considered a continent in its own right or a subcontinent of Eurasia, which shares the continental landmass of Afro-Eurasia with Africa. Asia covers an are ...

and below its summit crater are found

fumarole A fumarole (or fumerole) is a vent in the surface of the Earth or other rocky planet from which hot volcanic gases and vapors are emitted, without any accompanying liquids or solids. Fumaroles are characteristic of the late stages of volcani ...

s and

hot spring A hot spring, hydrothermal spring, or geothermal spring is a spring produced by the emergence of geothermally heated groundwater onto the surface of the Earth. The groundwater is heated either by shallow bodies of magma (molten rock) or by circ ...

s as well as

glacier A glacier (; ) is a persistent body of dense ice that is constantly moving under its own weight. A glacier forms where the accumulation of snow exceeds its ablation over many years, often centuries. It acquires distinguishing features, such a ...

Flora

Juniper (''

Juniperus excelsa ''Juniperus excelsa'', commonly called the Greek juniper, is a juniper found throughout the eastern Mediterranean, from northeastern Greece and southern Bulgaria across Turkey to Syria and Lebanon, Jordan, the Caucasus mountains, and south ...

'' subsp. polycarpos) is the most common tree in this ecoregion. It formerly covered south-facing slopes, but logging has greatly reduced its range to inaccessible areas and high elevations. Shrubs in the ecoregion are pistachio (''

Pistacia atlantica ''Pistacia atlantica'' is a species of pistachio tree known by the English common name Mt. Atlas mastic tree, Atlas pistachio, Atlantic pistacio, Atlantic terebinth, Cyprus turpentine tree, and Persian turpentine tree. ''P. atlantica'' has th ...

''), cotoneaster ('' Cotoneaster racemiflora''), maple ('' Acer turcomanicum''), and almond (''

Amygdalus ''Prunus'' subg. ''Prunus'' is a subgenus of ''Prunus''. This subgenus includes plums, apricots and bush cherries. Most species inside this subgenus bear fruit that is sugary, storing large amounts of energy, which is why most ''Prunus'' species' ...

'' spp.). Wormwood is a common herbaceous plant.

Fauna

This ecoregion is home to several large mammal species. Syrian brown bear ('' Ursus arctos syriacus'') wander the mountains and hillsides while solitary roe deer (''

Capreolus capreolus The roe deer (''Capreolus capreolus''), also known as the roe, western roe deer, or European roe, is a species of deer. The male of the species is sometimes referred to as a roebuck. The roe is a small deer, reddish and grey-brown, and well-adapt ...

'') feed on grass and berries in and around forests. Groups of native wild boar (''

Sus scrofa The wild boar (''Sus scrofa''), also known as the wild swine, common wild pig, Eurasian wild pig, or simply wild pig, is a suid native to much of Eurasia and North Africa, and has been introduced to the Americas and Oceania. The species is n ...

'') forage at night and beech martens (''

Martes foina The beech marten (''Martes foina''), also known as the stone marten, house marten or white breasted marten, is a species of marten native to much of Europe and Central Asia, though it has established a feral population in North America. It is li ...

'') hunt smaller mammals and search for eggs and worms at dawn and dusk. Red deer (''

Cervus elaphus The red deer (''Cervus elaphus'') is one of the largest deer species. A male red deer is called a stag or hart, and a female is called a hind. The red deer inhabits most of Europe, the Caucasus Mountains region, Anatolia, Iran, and parts of wes ...

'') live in single sex groups most of the year, but rut in the fall, sometimes locking antlers. Canids in this ecoregion are Indian wolf (''

Canis lupus pallipes The Indian wolf (''Canis lupus pallipes'') is a subspecies of gray wolf that ranges from Southwest Asia to the Indian Subcontinent. It is intermediate in size between the Himalayan wolf and the Arabian wolf, and lacks the former's luxuriant winte ...

''), common jackal ('' Canis aureus aureus''), and red fox (''

Vulpes vulpes The red fox (''Vulpes vulpes'') is the largest of the true foxes and one of the most widely distributed members of the order Carnivora, being present across the entire Northern Hemisphere including most of North America, Europe and Asia, plus ...

''). Felids are Persian leopard ('' Panthera pardus ciscaucasica''), jungle cat (''

Felis chaus The jungle cat (''Felis chaus''), also called reed cat, swamp cat and jungle lynx, is a medium-sized cat native to the Middle East, the Caucasus, South and Southeast Asia and southern China. It inhabits foremost wetlands like swamps, littoral ...

''), and Caucasus lynx ('' Lynx lynx dinniki''). Goitered gazelle ('' Gazella subgutturosa'') walk the plains in the southeast. There are also large populations of the globally endangered argali (''

Ovis ammon The argali (''Ovis ammon''), also known as the mountain sheep, is a wild sheep that roams the highlands of western East Asia, the Himalayas, Tibet, and the Altai Mountains. Description The name 'argali' is the Mongolian word for wild sheep. It ...

''). Notable birds in this ecoregion are honey buzzard (''

Pernis apivorus The European honey buzzard (''Pernis apivorus''), also known as the pern or common pern, is a bird of prey in the family Accipitridae. Etymology Despite its English name, this species is more closely related to kites of the genera ''Leptodon'' an ...

''), goshawk (''

Accipiter gentilis The northern goshawk (; ''Accipiter gentilis'') is a species of medium-large raptor in the family Accipitridae, a family which also includes other extant diurnal raptors, such as eagles, buzzards and harriers. As a species in the genus ''Accipit ...

''), black vulture (''

Aegypius monachus The cinereous vulture (''Aegypius monachus'') is a large raptor in the family Accipitridae and distributed through much of temperate Eurasia. It is also known as the black vulture, monk vulture and Eurasian black vulture. With a body length of , ...

''), bimaculated lark (''

Melanocorypha bimaculata The bimaculated lark (''Melanocorypha bimaculata'') breeds in warm temperate countries eastwards from Turkey into Central Asia. It is the eastern counterpart of its relative, the calandra lark. Taxonomy and systematics The bimaculated lark wa ...

'') and Caspian snowcock ('' Tetraogallus caspius''). Eagles here are the lesser spotted eagle (''

Aquila pomarina The lesser spotted eagle (''Clanga pomarina'') is a large Eastern European bird of prey. Like all typical eagles, it belongs to the family Accipitridae. The typical eagles are often united with the buteos, sea eagles, and other more heavy-set ...

'') and the golden eagle (''

Aquila chrysaetos The golden eagle (''Aquila chrysaetos'') is a bird of prey living in the Northern Hemisphere. It is the most widely distributed species of eagle. Like all eagles, it belongs to the family Accipitridae. They are one of the best-known birds of ...

''). The ecoregion is also a breeding area for the little bustard (''

Tetrax tetrax The little bustard (''Tetrax tetrax'') is a bird in the bustard family, the only member of the genus ''Tetrax''. The genus name is from Ancient Greek and refers to a gamebird mentioned by Aristophanes and others. Distribution It breeds in S ...

'') and black woodpecker (''

Dryocopus martius The black woodpecker (''Dryocopus martius'') is a large woodpecker that lives in mature forests across the northern Palearctic. It is the sole representative of its genus in that region. Its range is expanding. The black woodpecker is easily the ...

'').

Threats and protected areas

Logging and agriculture have reduced the range of the forests in this ecoregion, dams have disrupted river flows, and

overgrazing Overgrazing occurs when plants are exposed to intensive grazing for extended periods of time, or without sufficient recovery periods. It can be caused by either livestock in poorly managed agricultural applications, game reserves, or nature res ...

has degraded habitat. Protected areas with Elburz Range forest steppe in Iran include

Golestan National Park Golestan National Park ( fa, پارک ملی گلستان), commonly known as the Golestan Jungle (), is an Iranian National Park in Golestan Province, northeastern Iran. Geography The park is located in the eastern Alborz (Elburs) Mountains ra ...

and the Ghorkhod Protected Area, both in Golestan Province and totalling .

References

{{coord missing, Iran Ecoregions of Iran Ecoregions of Asia Alborz (mountain range) Montane forests Forests of Azerbaijan Forests of Iran Geography of Ardabil Province Geography of Gilan Province Geography of Golestan Province Geography of Mazandaran Province * Palearctic ecoregions Temperate coniferous forests

Setting

Flora

Fauna

Threats and protected areas

See also

References