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The United Nations Decade of Ocean Science for Sustainable Development requires that all of the Actions it endorses have concrete plans to involve stakeholders in the co-creation of ocean science. As a result, we have a unique opportunity to test different approaches to stakeholder engagement to see what works and what does not. Here, we feature short essays in the “Food for Thought” series in which leaders from Decade-endorsed Actions describe how they plan to incorporate stakeholders in the co-design, co-production, and co-delivery of ocean science and how they will measure whether these approaches were successful. We also invited submissions to the journal’s “Stories from the Front Lines” series, in which authors were asked to share unvarnished accounts of the lessons learned from previous efforts to co-design ocean science. We hope that these initial articles will be the beginning of an ongoing series in which new Decade Actions will also document their plans to implement, monitor, and measure the success or failure of these approaches.

International audience; Mangroves, seagrass meadows, and salt marshes, collectively termed “Blue Forests,” are counted among the most valuable and productive coastal ecosystems on the planet. A recent literature review of the Blue Forest valuation research identified mangroves as the most frequently analyzed of these ecosystems, yet the literature demonstrates several deficits in terms of geographic location of studies, methods used to value the services, and most notably, a lack of valuation for cultural services. To better understand this, we analyzed the studies dealing specifically with mangroves from the original literature review to quantify what has been valued, where, by which methods, and the variation in the published values. We then use this information to synthesize our current level of knowledge on the type and value of services provided by mangroves, discuss data gaps, and address specifically the collection of data relevant to cultural ecosystem services (CES). Our results shed light on two principle issues affecting the mangrove valuation literature: overuse of benefit transfer in valuing mangrove ecosystem services and a lack of attention paid to the CES that mangroves provide. The mangrove valuation literature is not yet robust, lacking estimates of many ecosystem services, including CES, such as spiritual and aesthetic value. Most published studies focus on a small selection of ecosystem services based on the availability of benefit transfer values and the ability to easily measure values with market prices. Thus, many ecosystem services that cannot be valued monetarily, but that are often equally important to local communities, are ignored. Given the wide range of ecosystem services mangroves provide and the variety of valuation methods that need to be collectively employed, we argue that doing valuation studies well requires a multi-disciplinary approach, bringing together anthropologists, social scientists, ecologists and economists. Thoughtfully and thoroughly including the local stakeholders in valuation studies and the resultant policy discussions leads to a more holistic understanding of the services mangroves provide, and viable solutions with an increase in local willingness to act in accordance with those solutions.

International audience; Increasing the size and number of marine protected areas (MPAs) is widely seen as a way to meet ambitious biodiversity and sustainable development goals. Yet, debate still exists on the effectiveness of MPAs in achieving ecological and societal objectives. Although the literature provides significant evidence of the ecological effects of MPAs within their boundaries, much remains to be learned about the ecological and social effects of MPAs on regional and seascape scales. Key to improving the effectiveness of MPAs, and ensuring that they achieve desired outcomes, will be better monitoring that includes ecological and social data collected inside and outside of MPAs. This can lead to more conclusive evidence about what is working, what is not, and why. Eight authors were asked to write about their experiences with MPA effectiveness. The authors were instructed to clearly define \textquotedbllefteffectiveness\textquotedblright and discuss the degree to which they felt MPAs had achieved or failed to be effective. Essays were exchanged among authors and each was invited to write a shorter \textquotedblleftcounterpoint.\textquotedblright The exercise shows that, while experiences are diverse, many authors found common ground regarding the role of MPAs in achieving conservation targets. This exchange of perspectives is intended to promote reflection, analysis, and dialogue as a means for improving MPA design, assessment, and integration with other conservation tools.

International audience; The way we manage our global ocean economy continues to evolve. While new research clearly shows the importance of ocean ecosystems to people (Barbier et al., 2011), other evidence clearly depicts an ocean in decline (Pandolfi et al., 2003; Pauly et al., 2005; Worm et al., 2006). In response, the United Nations Environment Program along with organizations including UNDESA, UNDP, IMO, FAO, IUCN, GRID-Arendal and World Fish Center have promoted a new effort in relation to marine management and economic development that applies a green economy approach to the Blue World (UNEP et al., 2012). This approach seeks to change economic and industrial behavior to reduce impacts on the marine environment and in turn increase human welfare by carefully balancing the environmental, economic, and social capital that are required to support a sustainable, ecosystem-based approach to marine economic activity.