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Tell Atlas
The Tell Atlas (, Latn, ar, al-ʾaṭlas al-tlī) is a mountain chain over in length, belonging to the Atlas mountain ranges in North Africa, stretching mainly across northern Algeria, ending in north-eastern Morocco and north-western Tunisia. The ranges of this system have an average elevations of about and form a natural barrier between the Mediterranean and the Sahara. Its highest summit is the high Lalla Khedidja in the Djurdjura Range. 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 Sahar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Djurdjura Mountains
The Djurdjura (Berber: ''Adrar n Jerjer','' ) is a mountain range of the Tell Atlas, part of the Atlas Mountain System. It is located in Kabylie, Algeria. Geography The Djurdjura is a massif made up of two differentiated ranges, one in the north with the Haïzer and Akouker subranges and the other in the south. Its highest point, Lalla Khedidja known in Kabylian as ''Tamgut Aâlayen'', has an elevation of and it is located in the southern range. Other notable summits are the 2,305 m high Ich n'Timedouine (أكارو تيمدواي), a peak located in the central area of the massif, highest point of the Akouker subrange. Adrar n'Hayzer (أدرار نن هيدزر), the highest point of the Haïzer subrange, is a 2,164 m tall summit rising above Bouira and the high valley of Oued Dhous. The Thaletat is a 1,638 m high rocky mountain with a very original shape located in Tizi Ouzou Province. Other notable features of the Djurdjura range are the 1,750 m high Tirourda Pass ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chiffa
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 The Barbary macaque (''Macaca sylvanus''), also known as Barbary ape, is a macaque species native to the Atlas Mountains of Algeria, Tunisia and Morocco, along with a small introduced population in Gibraltar. It is the type species of the genus ' ..., ''Macaca sylvanus''.C. Michael Hogan, (2008''Barbary Macaque: Macaca sylvanus'', Globaltwitcher.com, ed. Nicklas Stromberg References External links Populated places in Blida Province {{Blida-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemism
Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can also be referred to as an ''endemism'' or, in scientific literature, as an ''endemite''. Similarly, many species found in the Western ghats of India are examples of endemism. Endemism is an important concept in conservation biology for measuring biodiversity in a particular place and evaluating the risk of extinction for species. Endemism is also of interest in evolutionary biology, because it provides clues about how changes in the environment cause species to undergo range shifts (potentially expanding their range into a larger area or b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mediterranean Climate
A Mediterranean climate ( ), also called a dry summer climate, described by Köppen and Trewartha as ''Cs'', is a temperate climate type that occurs in the lower mid-latitudes (normally 30 to 44 north and south latitude). Such climates typically have dry summers and wet winters, with summer conditions being hot and winter conditions typically being mild. These weather conditions are typically experienced in the majority of Mediterranean-climate regions and countries, but remain highly dependent on proximity to the ocean, altitude and geographical location. The dry summer climate is found throughout the warmer middle latitudes, affecting almost exclusively the western portions of continents in relative proximity to the coast. The climate type's name is in reference to the coastal regions of the Mediterranean Sea, which mostly share this type of climate, but it can also be found in the Atlantic portions of Iberia and Northwest Africa, the Pacific portions of the United States ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seybouse River
Seybouse (in ) is a river in northeastern Algeria, near the border with Tunisia. In Roman times, it was called the ''Ubus''. Course The river runs for about , flowing through Guelma and Annaba Provinces. It starts in Medjez Amar, in the Tell Atlas north-west of Guelma Province. Its flows into the Mediterranean Sea at Seybouse (called ''Joannonville'' under French rule) to the south-east of the city of Annaba. Its mouth is just north of Sidi Salem, the site of Hippo Regius where Saint Augustine Augustine of Hippo ( , ; ; 13 November 354 – 28 August 430) was a theologian and philosopher of Berbers, Berber origin and the bishop of Hippo Regius in Numidia (Roman province), Numidia, Roman North Africa. His writings deeply influenced th ... lived in AD 391–430. The Seybouse is used for irrigation of agricultural areas, but it is becoming polluted because of industrial activities. Characteristics References External links *ANRH (National Agency for Water Resources) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Medjerda River
The Medjerda River (), the classical antiquity, classical Bagradas, is a river in North Africa flowing from northeast Algeria through Tunisia before emptying into the Gulf of Tunis and Lake of Tunis. With a length of , it is the longest river of Tunisia. It is also known as the Wadi Majardah or Mejerda (). Course The Medjerda River originates in the Tell Atlas, part of the Atlas Mountains, in northeastern Algeria and then flows eastwards to Tunisia, then entering the Gulf of Utica of the Mediterranean Sea. Its course has a length of . It is the most important and longest river in Tunisia and is dammed in several locations, being a major supplier of water to the country's wheat crops. The Gulf of Utica was formed during the postglacial transgression about 6,000 years ago. Over time, fluvial deposits from the Medjerda gradually filled up the northern part of the gulf. The succession of events during historical times has been inferred from ancient documents and archaeological eviden ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salt Pan (geology)
Natural salt pans or salt flats are flat expanses of ground covered with salt and other minerals, usually shining white under the sun. They are found in deserts and are natural formations (unlike salt evaporation ponds, which are artificial). A salt pan forms by evaporation of a water pool, such as a lake or pond. This happens in climates where the rate of water evaporation exceeds the rate of that is, in a desert. If the water cannot drain into the ground, it remains on the surface until it evaporates, leaving behind minerals precipitated from the salt ions Solution (chemistry), dissolved in the water. Over thousands of years, the minerals (usually salts) accumulate on the surface. These minerals reflect the sun's rays and often appear as white areas. Salt pans can be dangerous. The crust of salt can conceal a quagmire of mud that can engulf a truck. The Qattara Depression in the eastern Sahara Desert contains many such traps which served as strategic barriers during World War ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hautes Plaines
The Hautes Plaines ("High Plains", ), also known in French as Hauts Plateaux, is a steppe-like natural region located in the Atlas Mountains in northern Algeria. It stretches more than 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. Geography The ''Hautes Plaines'' region averages between 1,100 and 1,300 m in elevation in the west, dropping to 400 m in the east. The climate is characterized by very dry summers and cold winters. Generally the climate is so dry that these plains are sometimes thought of as part of the Sahara. The plateau area is covered by alluvial debris formed when the mountains eroded. An occasional ridge projects through the alluvial cover to interrupt the monotony of the landscape. Water collects during the wet season on its level terrain, forming large shallow salt lakes which beco ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chelif River
Chelif River () (also spelled Chéliff, or Sheliff) is a river in Algeria, the longest in the country. It rises in the Saharan Atlas near the city of Aflou, flows through the Tell Atlas and empties into the Mediterranean Sea north of the city of Mostaganem. The water level in the river often fluctuates. The river is being used for irrigation Irrigation (also referred to as watering of plants) is the practice of applying controlled amounts of water to land to help grow crops, landscape plants, and lawns. Irrigation has been a key aspect of agriculture for over 5,000 years and has bee ... (mainly on its lower course). The river was formerly called the Mekerra and the Sig River. Notes References * Rivers of Algeria {{Algeria-river-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physiographic
Physical geography (also known as physiography) is one of the three main branches of geography. Physical geography is the branch of natural science which deals with the processes and patterns in the natural environment such as the atmosphere, hydrosphere, biosphere, and geosphere. This focus is in contrast with the branch of human geography, which focuses on the built environment, and technical geography, which focuses on using, studying, and creating tools to obtain, analyze, interpret, and understand spatial information. The three branches have significant overlap, however. Sub-branches Physical geography can be divided into several branches or related fields, as follows: * Geomorphology is concerned with understanding the surface of the Earth and the processes by which it is shaped, both at the present as well as in the past. Geomorphology as a field has several sub-fields that deal with the specific landforms of various environments, e.g. desert geomorphology and fluvial ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
African Alpine System
African or Africans may refer to: * Anything from or pertaining to the continent of Africa: ** People who are native to Africa, descendants of natives of Africa, or individuals who trace their ancestry to indigenous inhabitants of Africa *** List of ethnic groups of Africa *** Demographics of Africa *** African diaspora ** African, an adjective referring to something of, from, or related to the African Union ** Citizenship of the African Union ** Demographics of the African Union **Africanfuturism ** African art ** *** African jazz (other) ** African cuisine ** African culture ** African languages ** African music ** African Union ** African lion, a lion population in Africa Books and radio * ''The African'' (essay), a story by French author J. M. G. Le Clézio * ''The African'' (Conton novel), a novel by William Farquhar Conton * ''The African'' (Courlander novel), a novel by Harold Courlander * ''The Africans'' (radio program) Music * "African", a song by Peter ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Middle Atlas
The Middle Atlas (Amazigh: ⴰⵟⵍⴰⵚ ⴰⵏⴰⵎⵎⴰⵙ, ''Atlas Anammas'', Arabic: الأطلس المتوسط, ''al-Aṭlas al-Mutawassiṭ'') is a mountain range in Morocco. It is part of the Atlas mountain range, a 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 betw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
