Average marine acidity (pH) measured at agreed suite of representative sampling stations ( CBB )

This indicator is proposed as an indicator for Sustainable Development Target 14.3 Minimize and address the impacts of ocean acidification, including through enhanced scientific cooperation at all levels

Value Range


Data sources: IUCN Red List of Threatened Species (; specifically for coral species (Carpenter et al. 2008 Science 321: 560–563).

Responsible entities and national availability: IUCN Red List Partnership ( Available globally since 1980s, and can be disaggregated to national and regional levels (Rodrigues et al. 2014 PLoS ONE 9(11): e113934).

Linkages: 15.5 (and disaggregated versions for other targets )

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The list of indicator proposals (as of 11 August 2015) used for the IAEG-SDG Open Consultation with Civil Society, Academia and Private Sector.

460 item pages.