PGIS Research & information: general Spain adoptions agricultural diversification agricultural innovations agricultural knowledge and innovation systems (AKIS) agricultural landscapes agriculture agroecology alternative agri-food networks (AAFNs) alternative food networks biodiversity biological control city-region climate change collective action community supported agriculture community-supported agriculture (CSA) conservation conservative agriculture practices consumers/citizens cooperatives cross-national case study cultural landscapes demand depopulation double-hurdle model drivers of change ecological agriculture