The Chala or "Coast" is one of the eight natural regions in Peru. It is formed by all the western lands that arise from sea level up to the height of 500 meters. The coastal desert of Peru is largely devoid of vegetation but a unique fog and mist-fed ecosystem called Lomas is scattered among hills near the Pacific coast as elevations up to 1,000 metres (3,300 ft).
In this region, the flora includes vegetation that grows near the rivers, like the carob tree, the palo verde, salty grama grass, manglar or mangrove tree, the carrizo or giant reed and the Caña brava (ditch reed); and plants that grow in the hills, such as the Amancay or Peruvian daffodil (Hymenocallis amancaes), the wild tomato, the mito or Peruvian papaya (Vasconcellea candicans), and the divi-divi (Cæsalpinia coriaria).
Common trees in the north are the faique, the zapote, the zapayal, the barrigon and other thorny tropical savanna trees of the equatorial dry forests on the northern coast of Piura and Tumbes. Páramo and the northern coast of the Piura region are not under the influence of the cold Humboldt Current. Páramo has a tree line at the border, even on the westside of the continental divide.
Andean Continental Divide
|Chala, dry coast||Lowland tropical rainforest or Selva baja|
|Maritime Yungas||Highland tropical rainforest or Selva alta|
|Maritime Yungas||Subtropical cloud forest or Fluvial Yungas|
|Quechua - Montane valleys||Quechua - Montane valleys|
|Tree line||Tree line - about 3,500 m|
|Suni, scrubs and agriculture||Suni, scrubs and agriculture|
Loma-vegetation, is found between 150 metres (490 ft) and 600 metres (2,000 ft) and it is situated at the first westside slope near the coast in Peru. This subregion has a subtropical desert climate with little rainfall along the central and southern coast (drier as one goes south). The average year round day temperature is 21 °C (70 °F) (max 33 °C, min 8 °C).
- Pulgar Vidal, Javier: Geografía del Perú; Las Ocho Regiones Naturales del Perú. Edit. Universo S.A., Lima 1979. First Edition (his dissertation of 1940): Las ocho regiones naturales del Perú, Boletín del Museo de historia natural „Javier Prado“, n° especial, Lima, 1941, 17, pp. 145-161.
- Seibert, Paul (1996); Farbatlas Südamerika: Landschaften und Vegetation, Verlag Eugen Ulmer, Stuttgart, pp. 288.
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