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PAMPAS (Span. La Pampa, from a Quichu...

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Originally appearing in Volume V20, Page 658 of the 1911 Encyclopedia Britannica.
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PAMPAS (Span. La See also:Pampa, from a See also:Quichua word signifying a level open space or See also:terrace)  , an extensive See also:plain of See also:Argentina, extending from the Rio See also:Colorado See also:north to the Gran See also:Chaco, and from the foothills of the See also:Andes See also:east to the See also:Parana and See also:Atlantic See also:coast.l It consists of a See also:great calcareo-argillaceous See also:sheet, once 1 There are other See also:pampas in See also:South See also:America, such as the Pampas de Aullagas, in See also:Bolivia, the Pampas del See also:Sacramento between the Huallaga and Ucayali See also:rivers in eastern See also:Peru, and others less well known, but when the word Pampas is used alone the great See also:Argentine plain is meant . the See also:bed of an See also:ancient See also:sea, covered on the See also:west by See also:shingle and See also:sand, and on the east by deposits of See also:estuary silt of irregular thickness brought down from the See also:northern See also:highlands . Its western and northern limits, formed by the foothills and See also:talus slopes of the Andes, and by the south of the great forested depression of the Gran Chaco, cannot be accurately defined, but its See also:area is estimated at 200,000 to 300,000 sq. m . Its greatest breadth is across the south, between the 36th and 37th See also:parallels, and its least in the north, where the eastern ranges of the Andes project deeply into its north-western See also:angle . Its See also:surface is broken in the north-west by the sierras of See also:Tucuman, See also:Catamarca, See also:San Luis and See also:Cordoba, the latter rising from the midst of the plain, and by some small isolated sierras and hills on the south . It has a See also:gradual slope from north-west to south-east, from an See also:elevation above sea-level of 2320 ft. at See also:Mendoza to 20 ft. at Buenos Aires on the La See also:Plata—the distance across (between Mendoza and Buenos Aires) being about 635 m . There are other slight irregularities in its surface, such as the See also:longitudinal depression on the west, the saline, arid depression west of the Cordoba sierras, the See also:Mar de Chiquita depression N.E. of Cordoba, and some smaller areas elsewhere . Apart from these the plain appears perfectly level . The east, which is humid, fertile and grassy, has no natural arboreal growth, except in the vicinity of Cordoba and in the north, where algarrobas and some of the Chaco See also:species are to be found . In the extreme south some species of See also:low, thorny bushes See also:cover considerable areas in the vicinity of the See also:hill-ranges, otherwise the plain is destitute of native trees . Since the arrival of Europeans several species have been introduced successfully, such as the See also:eucalyptus, See also:poplar, paraiso (Melia Azedarach), See also:peach, See also:willow, ombfs (Pircunia) and others . The distinctive vegetation of the grassy pampas is the tall, coarse-leaved " pampas grass " (Gyneriusn argenteum) whose feathery spikes often reach a height of eight or nine feet .

It covers large areas to the exclusion of all other species except the trefoils and herbs that grow between its tussocks . The natural See also:

grasses of the pampas are popularly divided into pasta dura (hard pasturage), which includes the large, tussock-forming species, and pasta molle (soft pasturage), the See also:tender undergrowth . Since the See also:advent of Europeans other See also:forage See also:plants have been introduced, the most successful and profitable being See also:alfalfa or See also:lucerne (Medicago saliva), which is widely cultivated both for See also:hay and for See also:green pasturage for the fattening of See also:market stock . West of this region is a dry, sandy, semi-barren plain, called the " sterile pampas." It has large saline areas, brackish streams and lakes, and immense sandy deserts, and in singular contrast to the fertile, treeless region of the east it supports large areas of stunted trees and thorny bushes . Most prominent in this See also:hardy but unattractive growth is the " chanar " (Gurliaca or Gourliaca deem-limns), which is characteristic of the whole area, and led See also:Professor See also:Griesbach to suggest the substitution of "formacion del chanar " for " formacion del See also:monte," the designation adopted by botanists for this particular region . The chaflar is thorny and of low, irregular growth, and furnishes a strong durable See also:wood and a sweet See also:fruit . The grassy plains are well watered by streams flowing to the Parana, La Plata and coast, though some of these are brackish . There are large saline areas in northern See also:Santa Fe, See also:Santiago del Estero and Cordoba provinces, and throughout the greater See also:part of the pampean plain See also:wells cannot be sunk See also:lower than 18 or 20 ft. without encountering brackish See also:water . On the sterile pampas these conditions are still more See also:common, the drainage southward through the Desaguadero and Salado being charged with saline See also:matter . There are many saline lakes scattered over the pampas, the largest being the Mar de Chiquita, and See also:Lake Porongos in Cordoba, the great swamps and See also:lagoon on the lower Salado in Mendoza, and Lake Bebedero in San Juan . The See also:fauna of the pampas is limited to comparatively few species, all of which are found beyond its limits, also . These include the vizcacha (Lagostomus trichodactylus), Patagonian See also:hare (Dolichotis patagonica), See also:coypu (Myopotamus coypu), cui (Cavia australis), tucotuco (Ctenomys magellanica), See also:jaguar (Felis onca), See also:puma (Felis See also:con-color), grass-See also:cat (resembling Fells catus), wood-cat (Felis geoffroyi),a See also:fox-like See also:dog (Felis pajeros, See also:Azara), aguara (akin to Canis jubatus), See also:skunk, See also:weasel (Galictis See also:barbara), See also:deer (Cervus campesiris), four species of See also:armadillo, and two of the See also:opossum .

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Hudson considers the burrowing vizcacha, or biscacha, the most characteristic See also:denizen of the pampas, though the large yellow opossum (Didelphys crassicaudata) seems to be singularly adapted to See also:life on the level grassy plain . The avifauna is apparently richer, owing to See also:migration . Hudson enumerates 18 species of storks, ibises, herons, See also:spoon-bills and flamingoes, 20 species of ducks, geese and swans, 10 or 12 of the rallines, including the graceful ypicaha or dancing See also:bird, and 25 of the Limicolae (13 of which are visitors from North America) . See also:Land birds are not numerous . Vultures and See also:hawks are common, and there are a few owls, the best known of which is the " minera " (Geositta cunicularia), which inhabits the burrow of the vizcacha . Among other species of land birds, some 4o in number, are the military See also:starling (Sturnella), whose red See also:breast makes it a conspicuous See also:object on the pampas, the See also:white-banded mocking-bird, the chakar or "crested See also:screamer (Chauna chavarria), the See also:tinamou, and the See also:rhea, or South See also:American See also:ostrich . There are two species of the tinamou—the rufous and spotted--which are called partridges and are often hunted with snares by horsemen . The rhea, once very numerous, is now found farther inland than formerly, and is steadily diminishing in number . Civilized occupation is working many changes in the See also:character and See also:appearance of the pampas . The first See also:change was in the introduction of See also:cattle and horses . Cattle were pastured on the open pampas and were guarded by men called gauchos or mestizos, who became celebrated for their See also:horsemanship, their hardihood and their lawlessness . See also:Attention was then turned to See also:sheep-breeding, which See also:developed another and better type of plainsmen—the Irish and Scotch shepherds .

Then followed the extensive cultivation of cereals, forage crops, &c., which led to the See also:

general use of fences, the employment of immigrant labourers, largely See also:Italian and See also:Spanish, the See also:building of See also:railways and the growth of " See also:camp " towns . The picturesque gaucho is slowly disappearing in the eastern provinces, and the herds and flocks are being driven farther inland . The rural See also:population of the pampas is still sparse and the estancias are very large . See W . H . Hudson, The Naturalist in La Plata (See also:London, 1895) ; See also:Charles See also:Darwin, Voyage of the Beagle (London, 1839 and 1889); and Richardo Napp, La republica argentina (Buenos Aires, 1876; also in See also:German) .

End of Article: PAMPAS (Span. La Pampa, from a Quichua word signifying a level open space or terrace)
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