The Atlantic Forest (Mata Atlântica) runs along the coast of eastern and southeastern Brazil, stretching inland into Argentina and Paraguay. Although only a small part of the original forests remain, it is still one of the most diverse ecosystems on the planet.
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The Chaco is a sparsely populated, hot and semi-arid lowland alluvial plain, divided among eastern Bolivia, western Paraguay, northern Argentina and a portion of Brazil. With a high biodiversity, it contains South America's second largest forest.
The El Chaco Biosphere Reserve covers a large area in the northern part of the boreal El Chaco system in Paraguay, with ecologically diverse dry forest ecosystems, which are under great pressure to be converted into grazing lands. The reserve has six core areas, all protected areas.
Located in eastern Paraguay, the Itaipu Biosphere Reserve covers a surface area of almost 2.5 million acres. It comprises an area of semi-deciduous subtropical forest and is one of the most important ecosystems for the conservation of biological diversity on a global scale.
The Jesuit Missions of Paraguay, La Santísima Trinidad de Paraná and Jesús de Tavarangue, are part of a series of 30 missions in the Río de la Plata basin established by the Society of Jesus (the Jesuits) during the 17th and 18th centuries.
Both the Mbaracayú Forest Natural Reserve and the Bosque Mbaracayú Biosphere Reserve protect a hotspot of biodiversity in the Mata Atlántica biologic corridor. It is a tropical humid forest ecosystem, which includes low and medium altitude Atlantic semi-deciduous forests and savannas.
Stretching across portions of Brazil, Bolivia and Paraguay, the Pantanal is a natural region encompassing the world's largest tropical wetland area. This gigantic seasonal floodplain is also home to a staggering variety of plants and wildlife.
The Paraguay River is South America's fifth largest river, running from the Brazilian state of Mato Grasso to its confluence with the Paraná River in Argentina, of which it is the main tributary. It serves as part of the Paraguayan border with Argentina as well as with Brazil.