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The Ecosystem Services (ES) concept highlights the varied contributions the environment provides to humans and there are a wide range of methods/tools available to assess ES. However, in real-world decision contexts a single tool is rarely sufficient and methods must be combined to meet practitioner needs. Here, results from the OpenNESS project are presented to illustrate the methods selected to meet the needs of 24 real-world case studies and better understand why and how methods are combined to meet practical needs. Results showed that within the cases methods were combined to: i) address a range of ES; ii) assess both supply and demand of ES; iii) assess a range of value types; iv) reach different stakeholder groups v) cover weaknesses in other methods used and vi) to meet specific decision context needs. Methods were linked in a variety of ways: i) as input-output chains of methods; ii) through learning; iii) through method development and iv) through comparison/triangulation of results. The paper synthesises these case study-based experiences to provide insight to others working in practical contexts as to where, and in what contexts, different methods can be combined and how this can add value to case study analyses.

Flanders (Belgium) is one of the most densely populated regions in Europe. Intensive land use, widespread suburbanization, inadequate environmental qualities, and fragmentation everywhere deteriorate living conditions and put pressure on species and natural habitats. In the past, several governmental initiatives were launched to establish a coherent ecological network to improve the situation. Despite the set objectives, only a little progress was made. Therefore, to establish green infrastructure, a new approach that moves away from previous top-down and one-sided strategies is developed. Making use of Green Infrastructure as a boundary concept, interpretation was given through an open and participatory process. The core is the identification of common objectives (ecosystem services or other objectives/services), the selection of appropriate green infrastructure elements to support the services, and the co-design of a network taking the local socio-ecological realm into account. By applying the methodology in concrete urban and rural projects, we learned that establishing strong coalitions of stakeholders, obtaining and sharing reliable knowledge of the systems are key to an effective realization of green infrastructure.

No abstract