Applicability of decision support systems for integrated coastal zone management

The use of Decision Support Systems (DSSs) in Integrated Coastal Zone Management (ICZM) has declined since the 1990s. In this article we investigate the opportunities for enhancing the applicability of ICZM-DSSs by considering the following research questions: (1) "What DSS functionalities are important for ICZM decision-making?" and (2) "which of these functionalities are part of present-day ICZM-DSS tools?" The first question has been answered by a literature survey. We identified knowledge- and process-related ICZM challenges and DSS functionalities that may help in meeting these challenges. For the second question, a selection of ICZM-DSS tools has been evaluated. The study shows none of the tools have all of the identified functionalities. The tools support either problem structuring/exploration or impact assessment while none of the tools manages to combine these functions. The implications for both DSS users (coastal managers) and DSS developers are discussed.