Argentina is the second largest country in South America after Brazil and the eighth largest country in the world. With the Andes forming its western border with Chile, the country's varied geography can be grouped into four geographic regions or sectors and seven natural regions or ecosystems.
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Ecoregions of Argentina
The Argentine Espinal ecoregion is a thorny deciduous shrubland forest, located in central Argentina, extending from central Santa Fe through the province of Córdoba to the north of San Luis. It has been extensively modified by large scale cattle ranching.
The Araucaria moist forests ecoregion spans the mountainous areas of southern Atlantic Brazil and extends into northeastern Argentina. It is a coniferous forest ecoregion of the Atlantic Forest biome.
The Central Andean dry puna ecoregion is a very dry, high elevation grassland of the southern high Andes, extending through western Bolivia and northern Chile and Argentina. Dry puna is distinguished from other types of puna by its annual rainfall, or lack thereof.
The Central Andean puna ecoregion is a high elevation montane grassland and shrubland in the southern high Andes, extending from southern Peru, though Bolivia, into northern Argentina. Several protected natural areas are found here.
The humid pampas occupy the plains in the east of Argentina and as well as one of the highest human-populated areas in Argentina, taking up most of the province of Buenos Aires. Horizontal plains and very soft undulations with low peaks, characterize the relief of this area.
The Magellanic subpolar forests are a terrestrial ecoregion of southernmost South America, covering parts of southern Chile and Argentina. It is a temperate broadleaf and mixed forests ecoregion and contains the world's southernmost forests.
The Argentine Monte, or Low Monte, is an ecoregion of dry thorn scrub and grasslands in Argentina. It is one of the driest regions in the country. Human settlements are mainly near water supplies such as rivers or oases.
The Patagonian Desert, also known as the Patagonian Steppe, is a semiarid scrub plateau that covers nearly all of the southern portion of mainland Argentina. It is the largest desert in Argentina and is bounded by the Patagonian Andes and the country of Chile to the west.
The Semiarid Pampas ecoregion is located in the center of Argentina. The predominant vegetation consists of grasslands with some shrubs. There are few endemic plants in the ecoregion but the area has a high biodiversity.
The Southern Andean steppe ecoregion is found in the higher elevations of the Chilean and Argentine Andes, the southern portion of the Andes range, and features a cold desert climate. It is part of the Montane grasslands and shrublands biome.