Fig 1.  Drivers-Pressures-State-Impact-Response (DPSIR) Framework as used by the Regular Process in relation to the ocean environment (UNEP 2009). Drivers result in Pressures that have an effect on the State of the environment. Measuring the State of marine ecosystems also allows the Impact of pressures to be assessed and guides government policy Responses. Monitoring is required to gauge the effectiveness of the policy Responses.
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