This book critically examines the development and current structure of European Union agri-environmental measures at a substantive level. Examining the measures in an integrated manner, showing how they interrelate linking different aspects of European Union agricultural law and policy, this volume examines the legislation adopted at European Union level as well as the impact of particular national measures to implement that legislation. Where appropriate, comparisons are drawn between the manner in which European Union legislation has been implemented among various Member States. Critically assessing European Union and national measures, in the light of other policy pressures such as the influence of world trade agreements and the political pressures exerted by the agricultural sector within the national legal systems of individual Member States, this volume is a valuable resource for academics researching and practitioners working in the areas of European Union environmental and agricultural law.