In the decade since the first edition of this book was published advances have been made in our knowledge of the fresh waters of the world, espe cially in under

This established textbook continues to provide a comprehensive andstimulating introduction to rivers, lakes and wetlands, and waswritten as the basis for a comp

This book brings together research into the process of stream acidification and its impact on Welsh surface waters, carried out over the past decade or so. It i

"awareness" of the world's citizens and encourage governments to devote more attention and resources to address this issue. The series editors thank the interna