 Uses and perceptions of urban wastelands, spaces for cultural ecosystem services in cities 
Providing areas for nearby nature and spontaneous vegetation, urban wastelands can offer cultural ecosystem services in cities. Our study of wastelands’ perceptions and informal uses by residents shows that such temporary urban ecosystems can be perceived as abandoned land, recreative or free green spaces: these perceptions are strongly related to wastelands’ uses and to the successive stages of vegetation. This demonstrates the necessity to find a balance between wild and managed nature in cities. Local measures could allow recognizing the role of wastelands as support of cultural ecosystem services in order to promote citizens’ contact with nature.