Andes to Amazon Biodiversity Program in Peru (AABP)

The region where the eastern slopes of the Andes Mountains meet the Amazonian lowlands harbors one of the greatest concentrations of biological diversity on Earth. Thousands of species and many complex tropical ecosystems exist along an altitudinal gradient from 4,000 meters (13,000 feet) in the Andes to 200 meters (650 feet) in the Amazonian lowlands.