Fig. 2. Example of management tool containing scientific tools for recreation and for biodiversity (adapted from Pouwels et al. 2008). The inputs are GIS maps containing landscape characteristics and attributes managers can control. The outputs are indicators that can be linked to objectives. The black arrow between the recreation tool and the biodiversity tool indicates the ecological footprint of recreation. The grey arrows indicate possible interactions between biodiversity values and recreation that have not yet been integrated, like the added value of a singing Sky Lark (Alauda arvensis) for visitors.