The document discusses learning ecosystems and their components. It describes how a learning ecosystem consists of various actors, learning services, and niches that afford teaching and learning purposes. Learning flows occur as users participate in networks of trophic chains that transform information to knowledge through the services provided. Communities in learning ecosystems are temporary and can successively change. Both planned and natural communities that emerge from learner-created services can support learning. Maintaining a balance through semi-natural communities that incorporate both teacher and learner contributions can help regulate learning ecosystems.