The Amazon Forest Inventory Network is an international collaboration to understand the dynamics of Amazon ecosystems. Since the year 2000 we have established a systematic framework for long-term monitoring of this region, which holds more biodiversity, water, and carbon than any other forest on Earth. This framework is based around long-term forest inventory plots but also includes extensive collection of soil and plant biogeochemical data and more intensive and high-frequency monitoring of a subset of sites.ÍRAINFOR works with partners across the nations of Amazonia, taking account of the modulating role of environmental variables like soil nutrition and the need to help develop a new generation of Amazon ecologists.