oasis

Oasis - Wikipedia Oasis From Wikipedia, the free encyclopedia Jump to: navigation, search For the English band, see Oasis (band). For other uses, see Oasis (disambiguation). This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. (December 2009) (Learn how and when to remove this template message) Oasis in the Libyan part of the Sahara In geography, an oasis (/oʊˈeɪsɪs/; plural: oases /oʊˈeɪsiːz/) is an isolated area in a desert, typically surrounding a spring or similar water source, such as a pond or small lake. Oases also provide habitat for animals and even humans if the area is big enough. The location of oases has been of critical importance for trade and transportation routes in desert areas; caravans must travel via oases so that supplies of water and food can be replenished. Thus, political or military control of an oasis has in many cases meant control of trade on a particular route. For example, the oases of Awjila, Ghadames, and Kufra, situated in modern-day Libya, have at various times been vital to both North-South and East-West trade in the Sahara Desert. Oases are formed from underground rivers or aquifers such as an artesian aquifer, where water can reach the surface naturally by pressure or by man-made wells. Occasional brief thunderstorms provide subterranean water to sustain natural oases, such as the Tuat. Substrata of impermeable rock and stone can trap water and retain it in pockets, or on long faulting subsurface ridges or volcanic dikes water can collect and percolate to the surface. Any incidence of water is then used by migrating birds, which also pass seeds with their droppings which will grow at the water's edge forming an oasis. It can also be used to plant crops. Contents 1 Etymology 2 Growing plants 3 Gallery 4 See also 5 References 6 Bibliography 7 External links Etymology[edit] The word oasis came into English via Latin: oasis from Ancient Greek: ὄασις óasis, which in turn is a direct borrowing from Demotic Egyptian. The word for oasis in the later attested Coptic language (the descendant of Demotic Egyptian) is wahe or ouahe which means a "dwelling place".[1] Growing plants[edit] People who live in an oasis must manage land and water use carefully; fields must be irrigated to grow plants like apricots, dates, figs, and olives. The most important plant in an oasis is the date palm, which forms the upper layer. These palm trees provide shade for smaller trees like peach trees, which form the middle layer. By growing plants in different layers, the farmers make best use of the soil and water. Many vegetables are also grown and some cereals, such as barley, millet, and wheat, are grown where there is more moisture.[2] Gallery[edit] Al Ain Oasis in the city of Al Ain, Arabian Peninsula Taghit in Algeria, North Africa Ein Gedi in Israel, Greater Syria Fish Springs National Wildlife Refuge in Utah, North America See also[edit] Wetlands portal Great Man-Made River – the world's largest irrigation project; developed in Libya to connect cities with fossil water. Guelta Mirage Oasification Qanat Wadi Water supply References[edit] ^ Douglas Harper. "Etymonline - Origin of 'Oasis'". Online Etymology Dictionary. Retrieved 2011-07-30.  ^ Encyclopædia Britannica Online.  Bibliography[edit] (in French) référence: Jardins au désert (Vincent Battesti)|Battesti (Vincent), Jardins au désert, Evolution des pratiques et savoirs oasiens, Jérid tunisien, Paris, Éditions IRD, coll. À travers champs, 2005, 440 p. ISBN 2-7099-1564-2 Open Archives: book in free access / in French External links[edit] Wikimedia Commons has media related to: Oasis (category) The dictionary definition of oasis at Wiktionary v t e Wetlands Acrotelm A Directory of Important Wetlands in Australia Aquatic ecosystem Aquatic plants Atchafalaya Basin Backswamp Bayou Beach meadow Blackwater river Blanket bog Bog Bog garden Brackish marsh Callows Carr Cataract bog Ciénega Clean Water Act Clearwater river Coastal bog Coniferous swamp Constructed wetland Delta Waterfowl Foundation Dambo Drainage basin Ducks Unlimited Estuary Fen Flark Flood-meadow Flooded grasslands and savannas Freshwater marsh Freshwater swamp forest Grass valley Guelta Halosere Hydrosere Igapó Ings Interdunal wetland Intertidal wetland Karst Kermi bog Kettle Lagg Mangrove Marsh Marsh gas Mere Mire Misse Moorland Muck Mudflat Muskeg Oasis Palsa bog Paludification Palustrine wetland Plateau bog Pocosin Polygonal bog Pond Peat swamp forest Poor fen Pothole Ramsar Convention Raised bog Reed bed Rich fen Riparian zone River delta Salt marsh Salt pannes and pools Shrub swamp Slough String bog Swamp Telmatology Tidal marsh Upland bog Wet meadow Wetlands International Wildfowl & Wetlands Trust Will-o'-the-wisp Várzea forest Vernal pool Whitewater river Yaéré Authority control GND: 4042861-8 NDL: 00568777 Retrieved from "https://en.wikipedia.org/w/index.php?title=Oasis&oldid=836719844" Categories: OasesFluvial landformsPhysical geographyHidden categories: Articles needing additional references from December 2009All articles needing additional referencesArticles containing Latin-language textArticles containing Ancient Greek-language textArticles with French-language external linksWikipedia articles with GND identifiers Navigation menu Personal tools Not logged inTalkContributionsCreate accountLog in Namespaces ArticleTalk Variants Views ReadEditView history More Search Navigation Main pageContentsFeatured contentCurrent eventsRandom articleDonate to WikipediaWikipedia store Interaction HelpAbout WikipediaCommunity portalRecent changesContact page Tools What links hereRelated changesUpload fileSpecial pagesPermanent linkPage informationWikidata itemCite this page Print/export Create a bookDownload as PDFPrintable version In other projects Wikimedia Commons Languages AlemannischالعربيةAsturianuAzərbaycancaবাংলাBân-lâm-gúБеларускаяБеларуская (тарашкевіца)‎БългарскиBosanskiBrezhonegCatalàČeštinaCymraegDanskDeutschEestiΕλληνικάEspañolEsperantoEuskaraفارسیFrançaisFryskGaeilgeGàidhligGalego한국어Հայերենहिन्दीHrvatskiIdoBahasa IndonesiaItalianoעבריתಕನ್ನಡქართულიҚазақшаKiswahiliKurdîКыргызчаLatinaLatviešuLietuviųLumbaartMagyarമലയാളംმარგალურიBahasa MelayuNederlands日本語NorskNorsk nynorskOccitanOʻzbekcha/ўзбекчаਪੰਜਾਬੀPolskiPortuguêsRomânăРусскийScotsShqipSicilianuSimple EnglishSlovenčinaSlovenščinaСрпски / srpskiSrpskohrvatski / српскохрватскиSuomiSvenskaதமிழ்తెలుగుไทยTürkçeУкраїнськаTiếng ViệtWinarayייִדיש粵語中文 Edit links This page was last edited on 16 April 2018, at 13:28. 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ZME Science posts about oasis

The ABC of desert traveling

Sun, Jan 18, 2009

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