Guillermo Rebosio Arana is a Peruvian economist with 15 years experience in the rural development field. His work has dealt with analysis of public policies and management of development projects, with considerable research experience in issues like food security, poverty, sustainable development and environment, among others.

He has published many books in these fields, such as "Peru: Towards a Food Security Strategy for the Next Millennium" (1999) and "Peasants income and public purchases of food in Peru" (2001), also contributing to economic magazines and newpapers.

He joined the Center of Research, Education and Development (CIED in Spanish), a Peruvian NGO, in 1997 to work in project design, planning, technical support, monitoring and reporting. In the years since 1990, he has also occasionally acted as advisor to the Peruvian Congress.

Since 2001, he has been the Technical Advisor of the Agualtiplano Project, a virtual information centre about the water resources in the South American highlands (shared by Peru, Bolivia, Chile and Argentina), working in the monitoring and analysis of the reform in water legislation in the four countries. This project, managed by CIED with the financial support of IDRC, aims to promote the efficient management of water resources, the defense of indigenous water rights and the protection of the highland ecosystems in the four countries.