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Marine spatial management is challenged by complex situations in European countries where multiple stakeholder interests and many management options have to be balanced. EU policy initiatives such as the proposed Marine Spatial Planning Directive, are in different ways targeting area allocation in European waters. In this circumstance, EU marine management needs assessments based on a satisfactory evaluation framework design that can ensure a transparent treatment of different types of information including interests, values, and facts. The main goal of this article is to introduce an evaluation framework applicable to marine management in European countries. This so-called CoExist framework maps out different types of relevant knowledge to assess future possibilities for use or no-use of marine areas and links this with appropriate management measures. The CoExist framework is based on the principles of ensuring transparent treatment of different types of information as well as appropriate stakeholder representation which can ensure legitimacy. Empirical findings in six European case studies have been obtained while conducting the CoExist framework. Applying the basic principles of the CoExist framework when planning future management directions of the coexistence of multiple activities in the long-run will expectedly affect the ecological and social-cultural goals by counterbalancing the economic ones.

Marine ecological change is likely to have serious potential economic consequences for coastal economies all over the world. This article reviews the current literature on the economic impacts of marine ecological change, as well as a number of recent contributions to this literature carried out under the VECTORS project. We focus on three main types of change, namely invasive alien species; outbreak-forming species, such as jellyfish and toxic algae; and gradual changes in species distribution and productivity. The case studies available in the literature demonstrate that the impacts of invasions and outbreaks on fisheries, aquaculture, and tourism can potentially amount to several tens of millions of dollars each year in some regions. Moreover, stated preference studies suggest a substantial impact on coastal tourism and non-use values that is likely not visible in case studies of specific outbreak events. Climate-driven gradual changes in distribution and productivity of commercial fish stocks will have an impact on fisheries, although these impacts are likely to be overshadowed by much larger changes in prices of seafood and fuel.