Natural Capital Considerations for an Extension of the US Marine Economy Satellite Account

In an effort to measure and track marine-dependent economic activities, the United States National Oceanic and Atmospheric Administration (NOAA) has developed two statistical tools: The Economics: National Ocean Watch (ENOW) and the Marine Economy Satellite Account (MESA). In both efforts, the focus has been on activities in selected sectors of the economy. MESA is developed within the framework of the System of National Accounts (SNA) and includes only economic activities that use essential marine inputs, produce goods or services to be used predominantly in the marine environment, take place in the marine environment, or need to be placed in proximity to the coast to take place. In addition, MESA only employs data on the annual flows of market-based values related to the marine activities. As an SNA-based tool, MESA also lacks a systematic tracking of the contribution of the environment to the economy by properly accounting for changes in the values of environmental capital stocks.
This paper considers an initial extension of MESA to include natural capital considerations by employing key elements of the System of Environmental-Economic Accounts Central Framework (SEEA-CF). In addition to reporting the economic activities captured by the SNA structure, the SEEA-CF requires measuring both additions to the environmental capital stocks (due to natural growth or improved resource management) and reductions in these stocks (resulting from depletion from use in the production process or removal of resources from the natural stock). Considering the complexity involved in the measurement of the natural capital foundations of the marine-related economy, the paper presents the MESA extension as pilot projects focusing on relatively data rich marine activities defined in MESA: offshore oil and gas, commercial fishing, and beach recreation.