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Lake Débo
Lake Débo is a lake in the central part of Mali, formed by the seasonal flooding of the Niger River basin. It is in the Inner Niger Delta of the Niger River. During high water stages of the river, the delta formed by lakes, creeks, and backwaters form part of Lake Débo. The inner delta has many wide channels, which are shallow and flooded marshes; this delta extends over a length of with a width of . Lake Débo during high flow season, is at a distance of from Mopti on its upstream, on the southern end and from Timbuktu at its downstream, on the north-eastern end. It is the largest of many such seasonal wetlands and lakes which form the Inner Niger Delta, and the largest lake within Mali. Its size is largely reduced during the dry season of September to March. The existence of this lake called the "Great Lake" in the Inner Niger Delta, inner delta of Niger River between Djenné, Jenne and Timbuktu in Mali has been established after extensive study of maps of the region extending ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Niger River
The Niger River ( ; ) is the main river of West Africa, extending about . Its drainage basin is in area. Its source is in the Guinea Highlands in south-eastern Guinea near the Sierra Leone border. It runs in a crescent shape through Mali, Niger, on the border with Benin and then through Nigeria, discharging through a massive delta, known as the Niger Delta (or the Oil Rivers), into the Gulf of Guinea in the Atlantic Ocean. The Niger is the third-longest river in Africa, exceeded by the Nile and the Congo River. Its main tributary is the Benue River. Etymology The Niger has different names in the different languages of the region: * Fula: ''Maayo Jaaliba'' * Manding: ''Jeliba'' or ''Joliba'' "great river" * Tuareg: ''Egerew n-Igerewen'' "river of rivers" * Songhay: ''Isa'' "the river" * Zarma: ''Isa Beeri'' "great river" * Hausa: ''Kwara'' *Nupe: ''Èdù'' * Yoruba: ''Ọya'' "named after the Yoruba goddess Ọya, who is believed to embody the ri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 silicates) because they are the most resistant minerals to weathering processes at the Earth's surface. Like uncemented sand, sandstone may be any color due to impurities within the minerals, but the most common colors are tan, brown, yellow, red, grey, pink, white, and black. Since sandstone beds often form highly visible cliffs and other topographic features, certain colors of sandstone have been strongly identified with certain regions. Rock formations that are primarily composed of sandstone usually allow the percolation of water and other fluids and are porous enough to store large quantities, making them valuable aquifers and petroleum reservoirs. Quartz-bearing sandstone can be changed into quartzite through metamorphism, usually related to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echinochloa Stagnina
''Echinochloa stagnina'' (Burgu millet, bourgou, hippo grass) is a species of ''Echinochloa'' widespread in tropical Africa and Asia, with an invasive status in many Pacific islands. It was once one of the major grasses cultivated in the Inner Niger Delta of the Niger River. It was cultivated by the Fulani The Fula, Fulani, or Fulɓe people ( ff, Fulɓe, ; french: Peul, links=no; ha, Fulani or Hilani; pt, Fula, links=no; wo, Pël; bm, Fulaw) are one of the largest ethnic groups in the Sahel and West Africa, widely dispersed across the region. ... people, who used the seeds as food, and to make both alcoholic and nonalcoholic beverages. It tolerates floods well, and has been replanted in Africa, where it has helped to control erosion and provides hay for animals. A traditional food plant in Africa, this little-known grain has potential to improve nutrition, boost food security, foster rural development and support sustainable landcare. Local names * ff, burgu * Laotian ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acacia
''Acacia'', commonly known as the wattles or acacias, is a large genus of shrubs and trees in the subfamily Mimosoideae of the pea family Fabaceae. Initially, it comprised a group of plant species native to Africa and Australasia. The genus name is New Latin, borrowed from the Greek (), a term used by Dioscorides for a preparation extracted from the leaves and fruit pods of ''Vachellia nilotica'', the original type of the genus. In his ''Pinax'' (1623), Gaspard Bauhin mentioned the Greek from Dioscorides as the origin of the Latin name. In the early 2000s it had become evident that the genus as it stood was not monophyletic and that several divergent lineages needed to be placed in separate genera. It turned out that one lineage comprising over 900 species mainly native to Australia, New Guinea, and Indonesia was not closely related to the much smaller group of African lineage that contained ''A. nilotica''—the type species. This meant that the Australasian lineage (by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cynodon Dactylon
''Cynodon dactylon'', commonly known as Bermuda grass, is a grass found worldwide. It is native to Europe, Africa, Australia and much of Asia. It has been introduced to the Americas. Although it is not native to Bermuda, it is an abundant invasive species there. In Bermuda it has been known as "crab grass" (also a name for ''Digitaria sanguinalis''). It is also known by various names as ''Dhoob'', ''dūrvā'' grass, ''ethana'' grass, ''dubo'', dog grass, dog's tooth grass, Bahama grass, crab grass, devil's grass, couch grass, Indian ''doab'', ''arugampul'', grama, wiregrass and scutch grass. Description The blades are a grey-green colour and are short, usually long with rough edges. The erect stems can grow tall. The stems are slightly flattened, often tinged purple in colour. The seed heads are produced in a cluster of two to six spikes together at the top of the stem, each spike long. It has a deep root system; in drought situations with penetrable soil, the root system c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mopti
Mopti ( Bambara: ߡߏߕߌ tr. Moti) is a town and an urban commune in the Inner Niger Delta region of Mali. The town is the capital of the Mopti Cercle and the Mopti Region. Situated 630 km northeast of Bamako, the town lies at the confluence of the Niger and the Bani Rivers and is linked by an elevated causeway to the town of Sévaré. The urban commune, which includes both Mopti and Sévaré, had a population of 114,296 in the 2009 census. Geography Mopti lies on the right bank of the Bani River, a few hundred meters upstream of the confluence of the Bani with the Niger River. Between August and December when the rivers flood the Inner Niger Delta, the town becomes a series of islands connected by raised causeways. During this period the only road access to the town is along a 12 km causeway that links Mopti to Sévaré. Mopti lies to the west of the Dogon Plateau and is 66 km northwest of Bandiagara and 76 km north-northeast of Djenné. The town is the ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tombouctou Region
Tombouctou Region ( Bambara: ߕߎߡߎߕߎ ߘߌߣߋߖߊ tr. Tumutu Dineja) is one of the administrative regions of Mali. For administrative purposes, the region is subdivided into five cercles. The region is part of northern Mali that was separated and declared independent by the National Movement for the Liberation of Azawad (MNLA) during the Tuareg rebellion of 2012. In the course of the conflict, the MNLA lost control of the territory to Islamist militias. Tombouctou Region is world-famous for its capital, the ancient city Timbuktu (french: Tombouctou), synonymous to 19th-century Europeans with an elusive, hard-to-reach destination. The city gained fame in 1390 when its ruler, Mansa Musa, went on a pilgrimage to Mecca, stopping with his entourage in Egypt and dispensing enough gold to devalue the Egyptian currency. This started the legend of a city in the interior of Africa, where roads were said to be paved with gold and buildings topped with roofs of gold. History ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sahel
The Sahel (; ar, ساحل ' , "coast, shore") is a region in North Africa. It is defined as the ecoclimatic and biogeographic realm of transition between the Sahara to the north and the Sudanian savanna to the south. Having a hot semi-arid climate, it stretches across the south-central latitudes of Northern Africa between the Atlantic Ocean and the Red Sea. The Sahel part of Africa includes – from west to east – parts of northern Senegal, southern Mauritania, central Mali, northern Burkina Faso, the extreme south of Algeria, Niger, the extreme north of Nigeria, Cameroon and Central African Republic, central Chad, central and southern Sudan, the extreme north of South Sudan, Eritrea and Ethiopia. Historically, the western part of the Sahel was sometimes known as the Sudan region (''bilād as-sūdān'' "lands of the Sudan"). This belt was located between the Sahara and the coastal areas of West Africa. There are frequent shortages of food and water due to the dry h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Niamey
Niamey () is the capital and largest city of Niger. Niamey lies on the Niger River, primarily situated on the east bank. Niamey's population was counted as 1,026,848 as of the 2012 census. As of 2017, population projections show the capital district growing at a slower rate than the country as a whole, which has the world's highest fertility rate. The city is located in a pearl millet growing region, while manufacturing industries include bricks, ceramic goods, cement, and weaving. History Niamey was probably founded in the 18th century and originated as a cluster of small villages (Gaweye, Kalley, Maourey, Zongo and Foulani Koira).Geels, Jolijn, (2006) ''Bradt Travel Guide - Niger'', pgs. 93-113 Niamey was of little importance until the French developed it as a colonial centre in the late 1890s. The town, then with an estimated population of some 1,800, was chosen as the capital of the newly created Military Territory of Niger in 1905, however, the capital was shifted to th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nomads
A nomad is a member of a community without fixed habitation who regularly moves to and from the same areas. Such groups include hunter-gatherers, pastoral nomads (owning livestock), tinkers and trader nomads. In the twentieth century, the population of nomadic pastoral tribes slowly decreased, reaching an estimated 30–40 million nomads in the world . Nomadic hunting and gathering—following seasonally available wild plants and game—is by far the oldest human subsistence method. Pastoralists raise herds of domesticated livestock, driving or accompanying them in patterns that normally avoid depleting pastures beyond their ability to recover. Nomadism is also a lifestyle adapted to infertile regions such as steppe, tundra, or ice and sand, where mobility is the most efficient strategy for exploiting scarce resources. For example, many groups living in the tundra are reindeer herders and are semi-nomadic, following forage for their animals. Sometimes also described as "nomad ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Erg Of Bara
The erg is a unit of energy equal to 10−7joules (100 nJ). It originated in the Centimetre–gram–second system of units (CGS). It has the symbol ''erg''. The erg is not an SI unit. Its name is derived from (), a Greek word meaning 'work' or 'task'. An erg is the amount of work done by a force of one dyne exerted for a distance of one centimetre. In the CGS base units, it is equal to one gram centimetre-squared per second-squared (g⋅cm2/s2). It is thus equal to 10−7 joules or 100 nanojoules ( nJ) in SI units. * 1 erg = = * 1 erg = = = * 1 erg = = * 1 erg = = * 1 erg = History In 1864, Rudolf Clausius proposed the Greek word () for the unit of energy, work and heat. In 1873, a committee of the British Association for the Advancement of Science, including British physicists James Clerk Maxwell and William Thomson recommended the general adoption of the centimetre, the gramme, and the second as fundamental units ( C.G.S. System of Units). To distinguish deriv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
%2C_scene_at_the_river_front.jpg "Click for more on -> Niger River")
Saunders_Quarry-1.jpg "Click for more on -> Sandstone")
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