This book anchors its arguments in Article 20 of the Watercourses Convention and explores consistencies and inconsistencies in parallel definitions, substantive and procedural obligations and institutional arrangements in IWL, and the Ramsar and Biodiversity Conventions with respect to the protection and preservation of ecosystems of shared inland waters. Dr. Yang Liu argues that the all-around informed and integrated application of IWL and MEAs is essential for the effective protection and preservation of shared inland water ecosystems. However, the degree of cross-fertilization of parallel provisions should be examined on a case-by-case basis in light of the legal analytical framework deployed in this study.