Darrell A. Posey, who died in 2001, was internationally known for his support of indigenous peoples and their natural habitats, and particularly for his pioneering work with the Kayapó people of Brazil. He was an organiser of the First International Congress of Ethnobiology which resulted in the Declaration of Belem: the first instance of an international scientific organisation recognizing an obligation to compensate native peoples for use of their knowledge and biological resources.
