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Parc national Noel Kempff Mercado

Brève description

Ce parc national est l'un des plus grands (1 523 000 ha) et des plus intacts du bassin amazonien. Variant en altitude de 200 m à près de 1 000 m, il offre une riche mosaïque d'habitats allant des forêts sempervirentes amazoniennes de haute altitude à la savane et à la forêt du Cerrado. Le parc présente une histoire évolutionnaire couvrant plus d'un milliard d'années depuis le Précambrien. Il abrite des populations viables de nombreux grands vertébrés en péril ou menacés d'extinction au niveau mondial, une flore estimée à 4 000 espèces et plus de 600 espèces d'oiseaux.

Parc national Noel Kempff Mercado © Pattrön

Justification d'inscription

Critères (ix) et (x): Le site contient toute une gamme d’habitats – forêts pluviales d’espèces à feuilles persistantes, forêts de palmiers, cerrado, marécages, savanes, forêts galeries et forêts sèches semi-décidues. Isolés pendant des millions d’années, les habitats du cerrado que l’on trouve sur la Meseta de Huanchaca sont un laboratoire vivant idéal pour l’étude de l’évolution de ces écosystèmes. Le site contient aussi une grande diversité d’espèces animales et végétales et, en particulier, des populations viables de grands vertébrés menacés à l’échelle mondiale.

Description longue

[Uniquement en anglais]

The National Park is one of the largest (1,523,000 ha) and most intact parks in the Amazon Basin. With an altitudinal range of 200 m to about 1,000 m, it contains a rich mosaic of habitat types from cerrado savannah and forest to upland evergreen Amazonian forests. The park boasts an evolutionary history dating back over a billion years to the Precambrian. Located on the border with Brazil, the site includes a large section of the Huanchaca Plateau and surrounding lowlands. There are rugged cliffs in the northern, western and southern sides of the plateau, with several valleys and steep slopes in its eastern side. Several rivers have their sources on the plateau and form spectacular waterfalls. The largest river in the area is the Iténez, which marks the border with Brazil, to the north of the park, and the Paraguá River dominates the lowlands to the west.

The north-eastern sector of the Santa Cruz Department is part of a transition zone where Amazon forest intergrades with the dry forest and savannah habitats of the Cerrado biogeographic realm. Habitat types of the region can be grouped into five basic units that represent distinct ecosystems: upland evergreen forest; deciduous forest; upland Cerrado savannah; savannah wetlands; and forest wetlands. The humid forests of the park are floristically distinct from the moist forests of western Amazon and the Andean piedmont. These forests are classified in several habitat types still scarcely studied.

An evergreen forest with tall trees is found on deep and well-drained soils, while there is a dwarf forest formation occupying a transition zone with the Cerrado. A peculiar feature of the forest is the lianas, which form a low and very thick canopy. Although trees are also part of the canopy, the lianas proliferate in such a way that they dominate. The Huanchaca Plateau has a rich Cerrado flora that incorporates many species that were thought to have a distribution restricted to central Brazil.

The outstanding habitat diversity of the park favours the existence of a highly diverse fauna and the site is an important repository for many rare mammals of Bolivia. Over 80% of the park's mammal species are found in humid forests. Good populations of tapir, brocket deer and jaguar inhabit the upland humid forests. Long-haired spider monkey has large populations throughout the tall evergreen forests, and black-tailed silvery marmoset and monk are also present.

The open grassland habitats on the southern portion of the plateau have possibly one of the largest remaining populations of pampas deer. Two other large mammals, maned wolf and marsh deer are found in the seasonally flooded termite savannahs below the plateau.

Source : UNESCO/CLT/WHC