Sustainability and multifunctionality of protected designations of origin of olive oil in Spain

Agrarian systems provide sociocultural and environmental externalities, which contribute to the sustainability of rural areas. The aim of this article is to analyse the sustainability of some Spanish olive oil Protected Designations of Origin (PDO) through multicriteria techniques (Analytical Network Process), taking into consideration different farming systems. The analysis has been made through ten criteria grouped in three clusters: economic, environmental and socio-cultural and asked experts. This was done first to rank the criteria and second in terms of what type of farming system achieves these criteria better. According to the results, there is a high level of consensus regarding the criteria ranking and the way that farming systems contribute to agrarian multifunctionality and sustainable development, despite the different characteristics of PDOs. In all cases, organic farming is the best, followed by integrated farming, when achieving economic, environmental and socio-cultural criteria, except for Estepa (where integrated farming is preferred for the economic and socio-cultural criteria). Conventional farming is placed in third position when achieving all functions, except for the environmental criteria, for which abandonment is preferred to conventional farming in all PDOs. Multifunctionality and sustainability are maximized by a combination of farming systems: about 40% organic, 35% integrated, 20% conventional and 5% crop abandonment.The results of our model regarding the combination of farming systems are similar to the actual situation in the PDOs studied, and, more important, this has been achieved thanks to the PDO institutions. Good local institutions contribute to improve the sustainability of rural areas by encouraging innovation and entrepreneurship (especially in PDOs, triggered by Origin Designation Regulator Councils) and a European level, by paying farmers for externalities.