TEAM is devoted to monitoring long-term trends in biodiversity, land cover change, climate and ecosystem services in tropical forests. Tropical forests received first billing because of their overwhelming significance to the global biosphere (e.g., their disproportionately large role in global carbon and energy cycles) and because of the extraordinary threats they face. About 50 percent of the species described on Earth, and an even larger proportion of species not yet described, occur in tropical forests. TEAM aims to measure and compare plants, terrestrial mammals, ground-dwelling birds and climate using a standard methodology in a range of tropical forests, from relatively pristine places to those most affected by people. TEAM currently operates in sixteen tropical forest sites across Africa, Asia and Latin America supporting a network of scientists committed to standardized methods of data collection to quantify how plants and animals respond to pressures such as climate change and human encroachment.