What tools for the European agricultural policy to encourage the provision of public goods?

Title: What tools for the European agricultural policy to encourage the provision of public goods? Contract No IP/B/AGRI/IC/2010_094.
Tender: European Parliament Tender No. PE 460.053.
Funding entity: Directorate General for Internal Policies. Policy Department B: Structural and Cohesion Policies. Agriculture and Rural Development (European Parliament).
Period: 1st December 2010 to 30th May 2011 (6 months).
Coordinator: Institute for European Environmental Policy (United Kingdom).
WEARE members involved: José A. Gómez-Limón