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The Tropical Andes are located in South America following the path of the Andes. They run, mainly, through five countries, Venezuela , Colombia , Ecuador , Peru , and Bolivia . The land initially was roughly 1,258,000 km 2 (486,000 sq mi) but has decreased to 314,500 km 2 (121,400 sq mi), leaving 25% of the original land.
The Andean region holds many extreme and variable environmental conditions that challenge farmers of the region. From pests, frosts, variable rainy seasons, and changes to soil conditions farmers have a lot to contend with.
The temperate Valdivian, matorral, and Magellanic ecoregions are isolated from the subtropical/tropical forests that dominate northern South America by such landscapes as the Atacama desert (north of the matorral), the Andes Mountains, and the dry, rain-shadow Patagonian steppe east of the Andes.
The sparsely populated eastern slopes of the Andes enjoyed abundant precipitation and warmer temperatures than the highlands, but also had agriculture challenges such as steep terrain. This region was important for its tropical crops, bird feathers, gold, and wood. [14] [15] The Incas transported agricultural goods by llama caravan.
A freshwater aquatic food web. The blue arrows show a complete food chain (algae → daphnia → gizzard shad → largemouth bass → great blue heron). A food web is the natural interconnection of food chains and a graphical representation of what-eats-what in an ecological community.
The Napo moist forests ecoregion covers part of the Amazon basin to the east of the Andes in the north of Peru, the east of Ecuador and the south of Colombia. Spread over 25,174,684 hectares (62,208,000 acres), [1] the ecoregion extends from the foothills of the Andes in the west almost to the city of Iquitos, Peru in the east, where the Napo and Solimões (Upper Amazon) rivers join.
[3] 52.2% of the environment is predominately the Andes, Amazon, and Pacific Basins, followed by the Orinoco basin 13.9%, the Andes and the Caribbean. [3] The Tropical Andes, Choco, and the Caribbean are considered biodiversity hotspots which puts these areas at high risk of concentration of colonizing activities. [2]
The ecoregion occurs along the eastern slope of the Andes from southern Bolivia into northern Argentina, at elevations ranging from 800 to 3,000 metres (2,600 to 9,800 ft). In the lowlands to the east the Yungas transition to the semi-arid Dry Chaco .