Organisms are increasingly being used to assess environmental impacts on ecosystems. Lichens are among the best known, most widely used biomonitors of environmental change, with thousands of papers published on this subject in the last decades. The present book provides the most recent synthesis on this subject. It is divided into three sections: (1) Monitoring lichens as indicators of pollution; (2) monitoring lichen diversity and ecosystem function; and (3) methods for monitoring lichens. The first two sections present the state of the art in the respective fields, while the third...