The ocean plays a critical role in supporting human well-being, from providing food, livelihoods and recreational opportunities to regulating the global climate. Sustainable management aimed at maintaining the flow of a broad range of benefits from the ocean requires a comprehensive and quantitative method to measure and monitor the health of coupled human–ocean systems. We created an index comprising ten diverse public goals for a healthy coupled human–ocean system and calculated the index for every coastal country. Globally, the overall index score was 60 out of 100 (range 36–86), with developed countries generally performing better than developing countries, but with notable exceptions. Only 5% of countries scored higher than 70, whereas 32% scored lower than 50. The index provides a powerful tool to raise public awareness, direct resource management, improve policy and prioritize scientific research.
At a glance
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- Supplementary Information (3.7M)
This file contains Supplementary Text and Data, Supplementary Tables 1-33, Supplementary Figures 1-9 and Supplementary References. The Supplementary Methods provide detailed descriptions of the general framework for calculating the index, goal-specific methodologies, and details about each data layer used. The Supplementary Results present sensitivity analyses on each of the key parameters in the index model. Supplementary Tables 1-33 give comprehensive information on data used and complete results for each country for each goal and sub-goal, and for certain sensitivity analyses. Supplementary Figures 1-9 include visualizations of how the index is calculated maps for sub-goal results, and a variety of outputs from correlation and sensitivity analyses. This file was replaced 23 January 2013.