Form follows function? Proposing a blueprint for ecosystem service assessments based on reviews and case studies

We analyzed ESA and the underlying concepts based on the variety of available publications and reviews, which revealed a number of different methods, uncertain reliability and robustness. In order to facilitate comparison, evaluation and synthesis of ecosystem service assessments we propose a blueprint for reporting studies in a structured way. By exemplifying this with worked examples, we argue that the use of such a blueprint will (i) assist in achieving improved communication and collaboration in transdisciplinary teams; (ii) reveal methodological aspects, important for the interpretation of results; (iii) support robustness and reliability of assessments; (iv) aid in structuring assessment studies and monitoring programs; (v) provide a base for comparing and synthesizing results of different studies (e.g. in meta-analysis), and thus (vi) provide a base for further implementation of ESA.