Mark Plotkin, an American ethnobotanist who lives in Brazil, founded The Amazon Conservation Team (ACT) to partner with indigenous tribes. ACT collaborates with Google Maps to train the Indians how to map, monitor, and protect their lands. ACT has been working with various tribes for 25 years and is one of the most successful conservation groups in the Amazon. This is
an example: Participatory Mapping in the Mobile Age.  Also see: Restoring Forest Continuity and Empowering Communities.
 

In this TED Talk, Plotkin discusses the Amazon's indigenous tribes and their knowledge of medicinal plants that shamans use to heal. He outlines the challenges endangering them and urges us to protect this irreplaceable repository of knowledge. Plotkin is the author of Tales of a Shaman's Apprentice and Medicine Quest: In Search of Nature's Healing Secrets.