Tell Atlas

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Tell Atlas
Haizeryel.JPG
View of the southern slopes of the Haizer Range in the Djurdjura Mountains
Highest point
Peak Lalla Khedidja
Elevation 2,308 m (7,572 ft)
Coordinates 36°0′0″N2°0′0″E / 36.00000°N 2.00000°E / 36.00000; 2.00000 Coordinates: 36°0′0″N2°0′0″E / 36.00000°N 2.00000°E / 36.00000; 2.00000 [1]
Dimensions
Length1,500 km (930 mi)E/W
Width115 km (71 mi)N/S
Naming
Native nameالاطلس التلي'  (Arabic)
Geography
Algeria relief location map.jpg
Red triangle with thick white border.svg
Tell Atlas
Country Morocco, Algeria and Tunisia
Parent range Atlas Mountains
Geology
Orogeny Alpine orogeny
Age of rock Miocene
Type of rock Crystalline metamorphic
Climbing
First ascent unknown
Easiest route drive
Location of the Atlas Mountains across North Africa Atlas-Mountains-Labeled-2.jpg
Location of the Atlas Mountains across North Africa

The Tell Atlas (Arabic : الاطلس التلي) is a mountain chain over 1,500 km (932 mi) in length, belonging to the Atlas mountain ranges in North Africa, stretching from Morocco, through Algeria to Tunisia.

Contents

The ranges of this system have an average elevations of about 1,500 m (4,900 ft) and form a natural barrier between the Mediterranean and the Sahara. Its highest summit is the 2,308 m (7,572 ft) high Lalla Khedidja in the Jurjura Range. [2]

Several large cities such as the Algerian capital, Algiers, with ~1,500,000 residents (2005) and Oran with ~770,000 residents (2005) lie at the base of the Tell Atlas. The Algerian city Constantine with approximately 505,000 residents (2005) lies 80 km inland and directly in the mountains at 650 meters in elevation. A number of smaller towns and villages are situated within the Tell; for example, Chiffa is nestled within the Chiffa gorge.

Geography

The Tell Atlas runs parallel to the Mediterranean coast. Together with the Saharan Atlas to the south, it forms the northernmost of two more or less parallel ranges which approach one another towards the east, remaining quite distinct from one another in Western Algeria and merging in Eastern Algeria. At the western end, it ends at the Rif and Middle Atlas ranges in Morocco. The Tell Atlas is also a distinct physiographic section of the larger Atlas Mountains province, which in turn is part of the larger African Alpine System physiographic division.

The Tell Atlas and the Saharan Atlas form two natural barriers, the first against the Mediterranean and the second against the Sahara. Between them lies the valley of the Chelif and various lesser rivers.

South of the Tell Atlas is the high plateau of the Hautes Plaines (~1000 m in elevation) with level terrain where water collects during the wet season, forming large shallow salt lakes which become salt flats as they dry. Agriculture includes grazing of sheep and goats on the grass in better-watered high plateau areas and some farming; dry-land barley is grown there. [3]

The Chelif is a 725 km long river with headwaters in the Tell Atlas to its discharge into the Mediterranean. The Chelif is characterized by an extremely fertile valley. Other noteworthy rivers having their sources in this range are the Medjerda and the Seybouse River. Only seasonal streams are found flowing south from the Tell Atlas.

Climate and vegetation

The Tell Atlas enjoys a typical Mediterranean climate, warm with dry summers and mild, rainy winters with snow at upper elevations. As a consequence, the northern slopes of the Tell Atlas are forested with the endemic Abies numidica , and Atlas cedar, pine, and cork oak. In the summer a hot, dry wind, the Sirocco, blows north from the Sahara across the Tell Atlas, causing dusty, dry conditions along the northern coast of Africa.

Despite the arid climate, some agriculture for barley and wheat farming is found in the Tell Atlas region. [4] The Chiffa gorge is situated within the Tell Atlas; this location is one of the few remaining habitats for the endangered primate, the Barbary macaque, Macaca sylvanus. [5]

See also

Related Research Articles

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Barbary macaque

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Blida City in Blida Province, Algeria

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High Atlas

High Atlas, also called the Grand Atlas, is a mountain range in central Morocco, North Africa, the highest part of the Atlas Mountains.

Middle Atlas

The Middle Atlas is a mountain range in Morocco. It is part of the Atlas mountain range, a vast mountainous region with more than 100,000 km2, 15 percent of its landmass, rising above 2,000 metres. The Middle Atlas is the northernmost and second highest of three main Atlas Mountains chains of Morocco. To south, separated by the Moulouya and Um Er-Rbiâ rivers, lies the High Atlas. The Middle Atlas form the westernmost end of a large plateaued basin extending eastward into Algeria, also bounded by the Tell Atlas to the north and the Saharan Atlas to the south, both lying largely in Algeria. North of the Middle Atlas and separated by the Sebou River, lie the Rif mountains which are an extension of the Baetic System, which includes the Sierra Nevada in the south of Spain. The basin of the Sebou is not only the primary transportation route between Atlantic Morocco and Mediterranean Morocco but is an area, watered by the Middle Atlas range, that constitutes the principal agricultural region of the country.

Wildlife of Morocco

The wildlife of Morocco is composed of its flora and fauna. The country has a wide range of terrains and climate types and a correspondingly large diversity of plants and animals. The coastal areas have a Mediterranean climate and vegetation while inland the Atlas Mountains are forested. Further south, the borders of the Sahara Desert are increasingly arid. Large mammals are not particularly abundant in Morocco, but rodents, bats and other small mammals are more plentiful. Four hundred and ninety species of birds have been recorded here.

Djurdjura National Park

The national park of Djurdjura is one of the national parks of Algeria. It is located in Kabylie and is named after the Djurdjura Range of the Tell Atlas.

Mediterranean woodlands and forests

The Mediterranean woodlands and forests is an ecoregion in the coastal plains, hills, and mountains bordering the Mediterranean Sea and Atlantic Ocean in North Africa. It has a Mediterranean climate, and is in the Mediterranean forests, woodlands, and scrub biome.

Mediterranean dry woodlands and steppe Mediterranean forests, woodlands, and scrub ecoregion of North Africa

The Mediterranean dry woodlands and steppe is a Mediterranean forests, woodlands, and scrub ecoregion of North Africa. It occupies interior plateaus and mountain ranges of the Maghreb region, lying generally between the coastal Mediterranean woodlands and forests to the north and the Sahara to the south.

Mediterranean conifer and mixed forests

Mediterranean conifer and mixed forests is an ecoregion, in the temperate coniferous forest biome, which occupies the high mountain ranges of North Africa. The term is also a botanically recognized plant association in the African and Mediterranean literature.

Chréa Commune and town in Blida Province, Algeria

Chrea is a town in Algeria, located in Blida Province, Ouled Yaïch District, in a mountainous area named Tell Atlas, near Blida.

<i>Fraxinus dimorpha</i> Species of ash tree

Fraxinus dimorpha is a species of ash tree native to Morocco and Algeria in Northern Africa. An example occurrence of F. dimorpha is the Ourika River Valley, which is also the sole location within the High Atlas Range where the endangered primate Barbary macaque, Macaca sylvanus is known to occur, is the southernmost species of the genus in the world.

Chiffa Commune and town in Blida Province, Algeria

Chiffa is a town and gorge in the Tell Atlas Mountains of northern Algeria. This gorge is one of the few habitat areas in Algeria that supports a sub-population of the Barbary macaque, Macaca sylvanus.

The Djebel Babor Nature Reserve is a protected area in Algeria. The reserve is within the Babor Mountains. Much of this area is forested with Mediterranean conifer and mixed forests. This reserve offers one of the few remaining disjunctive habitats for the endangered Barbary macaque, Macaca sylvanus, a primate species which prehistorically held a much wider range. The reserve is also a significant birdwatching area.

Babor Mountains

The Babor Range is a mountain range of the Tell Atlas in Algeria. The highest point of the range is 2,004 m high Mount Babor.

Pic des Singes

Pic des Singes is a peak in northern Algeria, northwest of the town of Béjaïa. It is located in the Cap Carbon area of the Tell Atlas range, on the Mediterranean coast.

<i>Hautes Plaines</i> Natural region in Algeria and NE Morocco

The Hautes Plaines, also known as Hauts Plateaux, is a steppe-like natural region located in the Atlas Mountains in northern Algeria. It stretches more than 600 km (370 mi) in an east northeast – west southwest direction from northeastern Morocco to the Aures. It is a high plateau area consisting of undulating, steppe-like alluvial plains lying between the Tell and Saharan Atlas ranges.

References

  1. Google Earth
  2. Mamdouh Shahin, Water resources and hydrometeorology of the Arab region, 2007 ISBN   978-1-4020-5414-3
  3. Les Hautes Plaines algéro-marocaines et le Maroc central
  4. William Adams Hance (1975) The Geography of Modern Africa, 2d Ed., Columbia University Press, 657 pages ISBN   0-231-03869-0
  5. C. Michael Hogan (2008) Barbary Macaque: Macaca sylvanus, Globaltwitcher.com, ed. Nicklas Strõmberg Archived 2012-04-19 at the Wayback Machine